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1
van Kolfschoten, Th. « The Eemian mammal fauna of central Europe ». Netherlands Journal of Geosciences 79, no 2-3 (août 2000) : 269–81. http://dx.doi.org/10.1017/s0016774600021752.
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AbstractThe knowledge of the Eemian fauna of central Europe is based on the fossil record from a number of sites located in the eastern part of Germany. The faunas with different deer species as well as Sus scrofa, Palaeoloxodon antiquus, Stephanorhinus kirchbergensis and Glis glis indicate a forested environment alternating during the climatic optimum of the Eemian s.s. with areas with a more open environment inhabited by species such as Cricetus cricetus, Equus sp. (or Equus taubachensis), Equus hydruntinus and Stephanorhinus hemitoechus. Characteristic for the Rhine valley fauna are Hippopotamus amphibius and the water buffalo (Bubalus murrensis); both species are absent in the eastern German faunas with an Eemian age.Taking into account the short period of time covered by the Eemian s.s., the amount of data on the Eemian mammalian fauna is remarkably large. There is, however, still an ongoing debate on whether the stratigraphical position of a number of faunas are of Eemian or ‘intra-Saalian’ age. Furthermore, there are faunal assemblages or stratigraphically isolated finds referred to the Eemian without indisputable evidence. This is particularly the case in the Rhine valley, where most of the so-called Eemian fossils come from dredged assemblages. The picture of the evolution of the Eemian fauna and its geographical variation is consequently still incomplete.
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Barker, J., D. Lunney et T. Bubela. « Mammal surveys in the forests of the Carrai Plateau and Richmond Range in north-east New South Wales. » Australian Mammalogy 17, no 1 (1994) : 19. http://dx.doi.org/10.1071/am94003.
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Mammal surveys were carried out on the Carrai Plateau and Richmond Range in north-east New South Wales between March 1988 and November 1989. The emphasis was placed on rainforest mammals, following the recognition by Adam ( 1987) that the species lists of mammals in the state's rainforests were incomplete and that more research was needed. The mammals were surveyed primarily by analysis of prey remains in Dog and Fox scats, collected from roads throughout the forests, and from bat trapping. The bat fauna at both the Carrai Plateau and Richmond Range is rich (1 0 species and nine species respectively, including the rare Golden-tipped Bat, Kerivoula papuensis, in the Richmond Range). Scat analysis revealed the presence of 24 native species on the Carrai Plateau, and on the Richmond Range there were 17 species, including high numbers of two pademelon species. Feral prey species are almost completely absent, although the Fox is an established predator in both areas. A sharp division was identified between the mammal faunas of closed and open forests. Differences were found also between the mammal fauna composition of the two rainforest sites, and with those of nearby eucalypt forests. The mammal fauna of New South Wales rainforests is distinct from open forests and future mammal surveys are needed to ensure an adequate level of knowledge to identify and conserve these areas.
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Potts, Richard, et Alan Deino. « Mid-Pleistocene Change in Large Mammal Faunas of East Africa ». Quaternary Research 43, no 1 (janvier 1995) : 106–13. http://dx.doi.org/10.1006/qres.1995.1010.
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AbstractSingle-crystal 40Ar/39Ar age estimates of 392,000 ± 4000 to 330,000 ± 6000 yr from Lainyamok, a middle Pleistocene fossil locality in the southern Kenya rift, document the oldest evidence from sub-Saharan Africa of a diverse, large mammal fauna consisting entirely of extant species. The inferred age of this fauna implies an upper limit for extinction of species that characterize well-calibrated, mid-Pleistocene fossil assemblages in East Africa. For its age and species richness, the Lainyamok fauna is surprising for its lack of extinct forms (e.g., the bovine Pelorovis) well documented in later faunal assemblages of East and South Africa. Definitive presence of the South African blesbok (Damaliscus dorcas) is also unexpected, especially as this alcelaphine bovid is the dominant large mammal in the Lainyamok fauna. These age estimates and the faunal composition at Lainyamok indicate that geographic ranges and taxonomic associations of extant largebodied mammals were susceptible to wide fluctuations in sub-Saharan Africa over the past 330,000 yr. This inference is consistent with the hypothesis of nonanalogue, or ephemeral, biotas believed to characterize late Quaternary ecosystems of northern continents.
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Woinarski, JCZ, RW Braithwaite, KA Menkhorst, S. Griffin, r. Fishe et N. Preece. « Gradient analysis of the distribution of mammals in Stage III of Kakadu National Park, with a review of the distribution patterns of mammals across north-western Australia ». Wildlife Research 19, no 3 (1992) : 233. http://dx.doi.org/10.1071/wr9920233.
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A total of 56 native mammal species (about one quarter of the species of land mammals known from Australia) was recorded from the Stage III area of Kakadu National Park, Northern Territory. A single environmental gradient (of substrate and disturbance) described well the distributions of species other than bats from this area. For most species, there was little shift in gradient position between three trapping periods (spaced over three years). The mammal fauna comprised a rocky upland assemblage, a lowland monsoon rainforest-swamp assemblage, and an open forest-woodland assemblage. Mammal diversity and abundance was greatest in the rocky uplands. The distribution of most bat species was not clearly associated with this gradient. The Stage III mammal fauna is compared with that described from elsewhere in north-western Australia. Across this region, the fauna shows little variation with longitude, but undergoes substantial latitudinal change in conjunction with a steep rainfall gradient. The habitat reSationships of the Stage III mammal fauna are broadly repeated across north-western Australia. The fauna of sandstone ranges is attenuated with decreasing size and increasing isolation of these ranges. The mammal fauna of monsoon rainforests is depauperate, reflecting the small size and patchiness of this habitat. The mammal fauna of open forest/woodland is characterised by extensive distributions of its constituent species and a relative lack of arboreal folivores and small macropods.
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Fusco, Diana A., Matthew C. McDowell, Graham Medlin et Gavin J. Prideaux. « Fossils reveal late Holocene diversity and post-European decline of the terrestrial mammals of the Murray–Darling Depression ». Wildlife Research 44, no 1 (2017) : 60. http://dx.doi.org/10.1071/wr16134.
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Context Establishing appropriate faunal baselines is critical for understanding and abating biodiversity declines. However, baselines can be highly reliant on historical records that come from already disturbed ecosystems. This is exemplified in the Murray–Darling Depression bioregion of Australia, where European settlement (and accompanying marked land-management changes and the introduction of many species) triggered rapid declines and losses of native species, often before their documentation. Aims We aim to establish the mammal fauna present when Europeans settled the Murray Mallee and Murray–Darling Depression bioregion and determine the extent of mammal loss since European settlement. Methods We describe a dated vertebrate assemblage from Light’s Roost in the lower Murray Mallee region of South Australia. We compare our data with those of modern fauna surveys and historical records to document the extent of change in the mammal fauna since European settlement. Key results Radiocarbon ages showed that the assemblage was accumulating, at a minimum, within an interval from 1900 to 1300 years ago. Since this time, the Murray–Darling Depression has lost half of its flightless terrestrial mammals. Species lost include the mulgara (Dasycercus blythi/cristicauda), which places this taxon within only 40km of Lake Alexandrina, the hitherto-disputed type locality for D. cristicauda. Fossils provided the principal evidence for nearly half of the Murray Mallee fauna and over three-quarters of the fauna are represented in the fossil record. Conclusions Late Holocene assemblages provide important archives of species biogeography and diversity. Our revised faunal baseline indicated that the pre-European fauna of the Murray–Darling Depression was more diverse than hitherto understood and its reduction appears largely caused by the impacts of European settlement. Implications Baselines for species distributions derived from historical records and modern faunal surveys are likely to be incomplete and warrant revision, particularly for smaller and more cryptic species. Deficiencies in regional records mask the extent of mammal declines caused by European colonisation and associated agricultural practices, and thus vulnerability to anthropogenic disturbance.
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Westgate, James W. « Uintan land mammals (excluding rodents) from an estuarine facies of the Laredo Formation (Middle Eocene, Claiborne Group) of Webb County, Texas ». Journal of Paleontology 64, no 3 (mai 1990) : 454–68. http://dx.doi.org/10.1017/s0022336000018709.
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A newly discovered vertebrate fossil assemblage, the Casa Blanca local fauna, comes from the Laredo Formation, Claiborne Group, of Webb County, Texas, and is the first reported Eocene land-mammal fauna from the coastal plain of North America. The mammalian fauna is correlated with the Serendipity and Candelaria local faunas of west Texas, the Uinta C faunas of the Rocky Mountains, the Santiago Formation local fauna of southern California, and the Swift Current Creek local fauna of Saskatchewan. The vertebrate-bearing deposit lies approximately 32 m above a horizon containing the marine gastropod Turritella cortezi, which ranges from east Texas to northeast Mexico in the lower half of the Cook Mountain and Laredo Formations and is a guide fossil for the Hurricane Lentil in the Cook Mountain Formation. Nannoplankton found in these middle Eocene formations belong to the upper half of Nannoplankton Zone 16 and allow correlation with European beds of late Lutetian to early Bartonian age.Over 700 specimens represent at least 30 species of 28 mammal genera. The Casa Blanca fauna is the southernmost and easternmost North American land-mammal fauna of definite Eocene age, and is the westernmost Paleogene vertebrate fauna from the Gulf Coastal Plain.
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Thompson, Scott A., Graham G. Thompson et Philip C. Withers. « Influence of pit-trap type on the interpretation of fauna diversity ». Wildlife Research 32, no 2 (2005) : 131. http://dx.doi.org/10.1071/wr03117.
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We compare bias in the interpretation of sampled reptile and mammal assemblages caught using 20-L PVC buckets and PVC pipes (150 mm by 600 mm deep) when used as pit-traps. We report on 16 632 pipe- and 16 632 bucket-nights of pit-trap data collected over 11 survey periods spread over 2.5 years around Ora Banda in Western Australia. Buckets caught more reptiles and more of the common ‘small’ and ‘medium’-sized reptiles, whereas pipes caught more mammals and the larger of the small trappable mammals. The trappability of some families of reptiles and some mammal species differs between buckets and pipes. We conclude that different pit-trap types provide a bias in the interpretation of the sampled fauna assemblage. Differences in the interpretation of vertebrate faunal diversity were accentuated by low trapping effort but attenuated by high trapping effort. We recommend that both buckets and pipes be employed as pit-traps during fauna surveys (as well as alternatives such as funnel traps) to more fully document fauna assemblages being surveyed.
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Perry, Justin J., Eric P. Vanderduys et Alex S. Kutt. « More famine than feast : pattern and variation in a potentially degenerating mammal fauna on Cape York Peninsula ». Wildlife Research 42, no 6 (2015) : 475. http://dx.doi.org/10.1071/wr15050.
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Context Global mammal populations continue to be threatened by environmental change, and recent decadal monitoring in northern Australia suggests a collapse in mammal abundance in key locations. Cape York Peninsula has globally significant natural values but there is very little published about the status and distribution of mammals in this region. Aims Following an extensive field survey we investigated two key questions: (i) what is the composition, spatial variation and change from previous regional surveys in the mid to late 1900s in the native terrestrial and arboreal mammal fauna recorded; and (ii) which landscape and site factors best predict mammal richness and abundance. Methods We sampled 202 one-hectare sites across seven locations from 2009 to 2012 in woodlands, closed forestand dune scrub and tussock grasslands. We collected landscape and site-based environmental data for each location, representing fire, weather and vegetation factors. We used generalised linear mixed models to examine the relationship between mammals and these factors. Key results Mammals were generally scarce across the sites and were more abundant and species rich in wet coastal grasslands or closed forests then tropical savanna woodlands. Fire frequency data and the surrounding vegetation complexity were consistent landscape-scale predictors of mammals; ground cover and woody complexity were significant at the site scale. Conclusions Notwithstanding interpretational constraints related to the limited evidence base of historic sampling, the mammal fauna recorded in this study for Cape York Peninsula was similar in composition to the mammal fauna described from 1948–1980 and surveys in 1985, with some species seemingly declining (e.g. Melomys burtoni, Dasyurus hallucatus, Sminthopsis virginiae) and others stable (e.g. Rattus sordidus) or more common (e.g. Rattus tunneyi); however, across all sites abundance was low, and many sites had few or no mammals. Implications In the absence of consistent long-term systematic monitoring it is difficult to determine if this survey and historical surveys represent pre-European patterns for mammals. The absence or low abundance of mammals in most sites suggest that cotemporary patterns may not represent an intact mammal fauna. Due to the equivocal nature of these findings a critical next step is to establish robust monitoring and experimental work to reveal the response of mammals to management interventions.
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Аrtemieva, Еlena. « Urban mammal fauna under conditions of a large city (on the example of Ulyanovsk, Middle Volga Region) ». Theriologia Ukrainica 2021, no 21 (1 juillet 2021) : 3–23. http://dx.doi.org/10.15407/tu2103.
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In this work, the topographic features of the spatial pattern of biodiversity of the urban fauna in general in the city are revealed: the number of urban fauna species has a maximum in the southern part of the city and a minimum in the western part. The mammal fauna as a component of urban fauna in general exhibits greater plasticity and adaptability in relation to humans compared to other groups of biota, for example, the insect fauna and avifauna. The urban mammal fauna in Ulyanovsk has historically formed due to the penetration of representatives of various faunal complexes that inhabit the region into the city area and its vicinities: (1) floodplain species associated with the river Sviyaga and its tributaries, 36.17%; (2) forest species living in pine-deciduous, deciduous-pine, and taiga forests, 46.81%; (3) upland-steppe species associated with Cretaceous landscapes of the right bank, 6.38%; (4) steppe species, including mammals of the left bank, common for the native feather grass–fescue steppes, 6.38%. Some animal species have remained in the city and in the region due to their spread by humans—introduced species and species kept in fur farms (10.64%). Synanthropic species are associated with human settlements (4.26%). The occurrence of species in different zones of the city (right bank and left bank) and habitats with an increase in the level of urbanization and a decrease in species diversity (1–5) are as follows: (1) green zones—parks and squares with woody vegetation, 31 species; (2) floodplain of the river Sviyaga within the city, 24 species; (3) summer cottages within the city, 15 species; (4) private sector with one-storey buildings, 5 species; (5) multi-storey buildings, 4 species. In general, in an urban environment, mammal species that coexist with humans make up 66.19 % of the total number of mammal species in the region. At the same time, the number of rare mammal species listed in the regional Red Book is 12.68%. Thus, when conservation measures for the protection of animal habitats within the urban environment are observed, most species are able to maintain stable populations.
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Koenigswald, Wighart V., et Wolf-Dieter Heinrich. « Biostratigraphische Begriffe aus der Säugetierpaläontologie für das Pliozän und Pleistozän Deutschlands ». E&G Quaternary Science Journal 56, no 1/2 (1 mars 2007) : 96–117. http://dx.doi.org/10.3285/eg.56.1-2.05.
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Abstract. The biostratigraphical subdivision of the Quaternary in central Europe has followed various approaches, and its terminology is correspondingly large. At first, stages in the development of mammal fauna were named after the sites of typical finds and arranged chronologically (e.g. KRETZOI 1962, 1969, JANOSSY 1969). Repeated efforts to correlate them with glacial and interglacials were difficult, however, because most fauna came from unglaciated regions, and no correlations based on well-defined superpositions were possible. The faunal succession had already shown that the number of interglacials in the classic system was not enough to explain the different warm-stage faunas. Deep-sea boreholes soon showed that the number of oscillations was much higher than PENCK & BRÜCKNER (1909) had assumed. The biostratigraphical subdivision of the Late Tertiary was refined by defining the boundaries of the individual stages by first and last appearances of characteristic species of mammals (FAD = First Appearance Date, LAD = Last Appearance Date).
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Markova, Anastasia K., et Andrey Yu Puzachenko. « Small mammal fauna in Europe during the second half of the Middle Pleistocene ». Fossil Imprint 73, no 1-2 (15 août 2017) : 48–66. http://dx.doi.org/10.2478/if-2017-0002.
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Evolutionary changes in European small mammals during the second half of the Middle Pleistocene, from the Likhvin (Holsteinian, Hoxnian) Interglacial (MIS 11) to the beginning of the Mikulino (Eemian) Interglacial (MIS 5e), that is between 424 ka BP and 130 ka BP were traced. Trends in evolutionary change were documented, and East European and West European faunas were compared. An integrated analysis of available theriological, geological, and geochronological data for the second half of the Middle Pleistocene in Europe has shown marked changes in the small mammal fauna throughout the period under consideration and provided information on the climate and environments at different time intervals. Changes traceable in the Arvicolinae phyletic lines made a correlation between the West European and East European mammal localities possible. The biostratigraphic scheme of the second half of the Middle Pleistocene has been developed and maps of small mammal localities compiled.
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Mayhew, D. F., F. E. Dieleman, A. A. Slupik, L. W. van den Hoek Ostende et J. W. F. Reumer. « Small mammal assemblages from the Quaternary succession at Moriaanshoofd (Zeeland, the Netherlands) and their significance for correlating the Oosterschelde fauna ». Netherlands Journal of Geosciences - Geologie en Mijnbouw 93, no 3 (24 avril 2014) : 119–34. http://dx.doi.org/10.1017/njg.2014.6.
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AbstractWe investigated fossil small mammals from a borehole near Moriaanshoofd (Zeeland, southwest Netherlands) in order to get better insights in the fossil mammal faunas that are found in the subsurface in the southwestern Netherlands, and to investigate the age and provenance of the mammal fauna that is being dredged from the deep tidal gullies in the nearby Oosterschelde estuary. The record in the borehole covers Gelasian (Early Pleistocene) to Holocene deposits, represented by six formations. Thirty-nine specimens of small mammals were obtained from the borehole. These fossils derived from the Early Pleistocene marine Maassluis Formation and from directly overlying deposits of a Late Pleistocene age. During Weichselian times (33–24 ka), a proto-Schelde River shaped the northern Oosterschelde area. The river reworked substantial amounts of Early and Middle Pleistocene deposits. At the base of the Schelde-derived fluvial sequence (regionally described as the Koewacht Formation), Gelasian vertebrate faunas were concentrated in the channel lag. The Late Pleistocene channel lag is almost certainly the main source for the rich Early Pleistocene vertebrate faunas with larger mammals dredged from the Oosterschelde.
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Marshall, Larry G., Richard L. Cifelli, Robert E. Drake et Garniss H. Curtis. « Vertebrate paleontology, geology, and geochronology of the Tapera de López and Scarritt Pocket, Chubut Province, Argentina ». Journal of Paleontology 60, no 4 (juillet 1986) : 920–51. http://dx.doi.org/10.1017/s0022336000043080.
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Fossil land mammals were collected by G. G. Simpson in 1933–1934 at and near the Tapera de López in central Chubut Province, Patagonia, southern Argentina, from rocks now mapped as the Sarmiento Formation. These fossils are assigned to land mammal faunas of Casamayoran (Early Eocene), Mustersan (Middle Eocene), and Deseadan (late Early Oligocene through Early Miocene) age.40K-40Ar age determinations of eight basalt and two tuff units associated with the Deseadan age local fauna at Scarritt Pocket establish a geochronologic framework that calibrates the biostratigraphic record at this locality. The radioisotope dates obtained at Scarritt Pocket range from 23.4 Ma to about 21.0 Ma, and equate with earliest Miocene time. The Scarritt Pocket local fauna is the youngest dated Deseadan age fauna yet known in South America.Seven other localities have, or were reputed to have, local faunas of Deseadan age associated with dated volcanic units. Six of these localities are in Argentina (Gran Barranca, Cerro Blanco, Valle Hermoso, Pico Truncado, Cañadón Hondo, Quebrada Fiera de Malargüe) and one in Bolivia (Estratos Salla in the Salla-Luribay Basin). The stratigraphic relationships of the volcanic units with these local faunas is discussed, and the taxonomic content of each is reassessed.The Deseadan Land Mammal Age is defined by the earliest record of the land mammal genus Pyrotherium, which is from below a basalt dated at 33.6 Ma at Pico Truncado. Other early records of Pyrotherium occur below basalts dated at about 29 Ma at the Gran Barranca and Valle Hermoso, and from a 28.5 Ma level of the Estratos Salla. Thus, the lower boundary for Deseadan time is about 34 Ma.The youngest record of Pyrotherium is in the upper levels of the Estratos Salla dated at about 24 Ma. However, the Scarritt Pocket local fauna, which lacks Pyrotherium, permits placement of the upper boundary for Deseadan time at about 21.0 Ma. Late Deseadan time is surely, and the end of Deseadan time is apparently, marked by the last record of such groups as Proborhyaeninae (Proborhyaena), Rhynchippinae (Rhynchippus), Archaeohyracidae (Archaeohyrax), and the genera Platypittamys (Octodontidae), Scarrittia (Leontiniidae), Propachyrucos and Prohegetotherium (Hegetotheriidae), and Argyrohyrax (Interatheriidae), as these taxa are recorded in the Scarritt Pocket local fauna. Thus, Deseadan time extends from about 34.0 Ma to about 21.0 Ma, making it the Land Mammal Age with the longest known duration in South America.
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Woinarski, J. C. Z., M. Armstrong, K. Brennan, A. Fisher, A. D. Griffiths, B. Hill, D. J. Milne et al. « Monitoring indicates rapid and severe decline of native small mammals in Kakadu National Park, northern Australia ». Wildlife Research 37, no 2 (2010) : 116. http://dx.doi.org/10.1071/wr09125.
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Context. Australia has a lamentable history of mammal extinctions. Until recently, the mammal fauna of northern Australia was presumed to have been spared such loss, and to be relatively intact and stable. However, several recent studies have suggested that this mammal fauna may be undergoing some decline, so a targeted monitoring program was established in northern Australia’s largest and best-resourced conservation reserve. Aims. The present study aims to detect change in the native small-mammal fauna of Kakadu National Park, in the monsoonal tropics of northern Australia, over the period of 1996–2009, through an extensive monitoring program, and to consider factors that may have contributed to any observed change. Methods. The small-mammal fauna was sampled in a consistent manner across a set of plots established to represent the environmental variation and fire regimes of Kakadu. Fifteen plots were sampled three times, 121 plots sampled twice and 39 plots once. Resampling was typically at 5-yearly intervals. Analysis used regression (of abundance against date), and Wilcoxon matched-pairs tests to assess change. For resampled plots, change in abundance of mammals was related to fire frequency in the between-sampling period. Key results. A total of 25 small mammal species was recorded. Plot-level species richness and total abundance decreased significantly, by 54% and 71%, respectively, over the course of the study. The abundance of 10 species declined significantly, whereas no species increased in abundance significantly. The number of ‘empty’ plots increased from 13% in 1996 to 55% in 2009. For 136 plots sampled in 2001–04 and again in 2007–09, species richness declined by 65% and the total number of individuals declined by 75%. Across plots, the extent of decline increased with increasing frequency of fire. The most marked declines were for northern quoll, Dasyurus hallucatus, fawn antechinus, Antechinus bellus, northern brown bandicoot, Isoodon macrourus, common brushtail possum, Trichosurus vulpecula, and pale field-rat, Rattus tunneyi. Conclusions. The native mammal fauna of Kakadu National Park is in rapid and severe decline. The cause(s) of this decline are not entirely clear, and may vary among species. The most plausible causes are too frequent fire, predation by feral cats and invasion by cane toads (affecting particularly one native mammal species). Implications. The present study has demonstrated a major decline in a key conservation reserve, suggesting that the mammal fauna of northern Australia may now be undergoing a decline comparable to the losses previously occurring elsewhere in Australia. These results suggest that there is a major and urgent conservation imperative to more precisely identify, and more effectively manage, the threats to this mammal fauna.
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Forboseh, P. F., T. C. H. Sunderland et M. Eno-Nku. « Priority setting for conservation in south-west Cameroon based on large mammal surveys ». Oryx 41, no 2 (avril 2007) : 255–62. http://dx.doi.org/10.1017/s0030605307001743.
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AbstractThe forests of the Cameroon-Nigeria transboundary region have been highlighted as a high conservation priority, yet many of the extant forest remnants remain relatively unknown, particularly with regard to the occurrence of large mammals. Between 2002 and 2004 we surveyed the large mammal fauna of the Mone and Ejagham Forest Reserves and the Upper Banyang, Nkwende Hills and Etinde forests of south-west Cameroon. Our objective was to document the extant large mammal species as an important step in the review of government priorities to identify key sites within the region for conservation and management. We reviewed the available literature on mammal distribution and then surveyed the forests for mammal and human signs. Despite a growing illegal commercial trade in wildlife, particularly for bushmeat, many sites retain populations of one or more threatened and locally rare large mammal species of significant conservation importance. Moreover, the sites collectively complement each other in terms of their representation of the threatened large mammal fauna. An emphasis on the enforcement of wildlife legislation and minimizing logging impact are of primary importance for the conservation of large mammals in these and other forest remnants in south-west Cameroon. In addition, at some sites, there already exists community interest in active wildlife management.
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Baynes, A., et RF Baird. « The original mammal fauna and some information on the original bird fauna of Uluru National Park, Northern Territory. » Rangeland Journal 14, no 2 (1992) : 92. http://dx.doi.org/10.1071/rj9920092.
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Investigation of mammal bones, accumulated mainly by owls, from four cave deposits, combined with observations and museum records, has revealed an original (i.e. immediately pre-European) fauna for Uluru National Park (UNP) of 34 species of native ground mammals and 12 species of bats. This fauna comprises one monotreme, 22 marsupials from eight families, 12 microchiropterans from four families, 10 murid rodents and the dingo. For six of the species the UNP records represent an extension of range over published distribution maps, though originally all the ground mammals were probably widespread in the arid zone. A recent survey found that the present fauna of UNP includes 15 native ground mammals and a minimum of seven bats, indicating a loss in about the last century of up to 19 species of ground mammals and at least one bat. The local status of three of these is uncertain, 10 appear to be locally extinct, two are extinct throughout the Australian mainland and five are probably totally extinct. As elsewhere in the arid zone, the mammals that survive are the largest and smallest species and the echidna. The cave deposit sites yielded two orders of magnitude fewer bird remains, some of which could not be identified below family or genus. The material includes at least 16 species representing 13 families. All identified species were recorded in the present fauna of UNP by the recent survey. This relatively small sample suggests that in non-pastoral areas of the arid zone, bird faunas, unlike mammals, have so far survived European colonisation of Australia without loss of diversity.
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NISTREANU, Victoria, et Alina LARION. « Mammal fauna of Chisinau airport, Republic of Moldova ». One Health & ; Risk Management 3, no 1 (27 décembre 2021) : 53–61. http://dx.doi.org/10.38045/ohrm.2022.1.07.
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Introduction. Airport territories are large, containing a high variety of biotopes, mostly open type, and are relatively protected against intense human activity, thus creating favorable conditions for many mammal species that serve as trophic source for many bird species.
Material and methods. The studies were performed during 2012-2014 on the territory of Chisinau airport and within the adjacent ecosystems. The mammals were recorded by direct observations, based on traces and trophic activity on routes ranging from 1 to 3 km. The small mammals were assessed with traps. The bat species were identified according to their flight pattern and using the ultrasound detector.
Results. In the airport, 31 species of mammals were registered: 5 insectivore species, 7 bat species, 14 rodent species, 1 hare species and 4 carnivorous species. The most widespread, common and abundant were the rodents and the fox. Among small rodent species, the most abundant was Apodemus sylvaticus with 51.6%, followed by the Microtus arvalis (38.9%), while on the airport grassland, the field vole dominated with more than 60%. The diet of Athene noctua included predominantly Mus musculus with over 51%, followed by M. arvalis with 23.7%. 7 species are rare and 5 protected – bicolor shrew and 4 bat species.
Conclusions. The airport territory and adjacent ecosystems provide favorable conditions for many mammal species. The presence of rodents favors the occurrence of rather high number of prey birds, which represent a threat for the safety of aircraft flights. The fox can pose direct threat to flight safety.
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Olds, Liberty G. M., Cecilia Myers, Henry Cook, Brendan Schembri, Christopher Jackson, Nick Evans, Brian Charles, Rowan Waina, William G. Breed et David A. Taggart. « The occurrence and relative abundance of small terrestrial mammals on Theda Station in the Northern Kimberley, Western Australia ». Australian Mammalogy 39, no 1 (2017) : 78. http://dx.doi.org/10.1071/am15055.
Texte intégralRésumé :
Significant gaps in knowledge currently exist regarding the small mammal fauna of the Northern Kimberley (NOK) bioregion. Theda Station is a previously unsurveyed pastoral lease in the NOK. The aim of the current study was to determine the presence of small mammals (non-volant, <2 kg) on Theda Station and to compare these findings with those recently obtained on the adjacent Doongan Station. Between 2006 and 2014, 226 site surveys were conducted across 69 sites, with over 26 000 trap-nights encompassing a range of habitats. Thirteen of the 27 small mammal species known to occur in the NOK were detected. Four species (Pseudomys nanus, Rattus tunneyi, Zyzomys argurus and Sminthopsis virginiae) were common, five (Pseudomys delicatulus, Pseudantechinus ningbing, Dasyurus hallucatus, Isoodon macrourus and Petropseudes dahli) were detected less frequently, and four (Leggadina lakedownensis, Hydromys chrysogaster, Planigale maculata and Petaurus breviceps) were occasionally recorded. Our study provides important baseline data for small mammals in this region. It highlights the lack of detailed knowledge of both the presence of, and temporal fluctuations in, the region’s small mammal fauna. This study supports a non-uniform distribution of the small mammal fauna across the NOK, with Theda Station lying within a transition zone between the high rainfall rugged coastal and near-coastal areas and the lower rainfall areas of the east.
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Colten, Roger H., et Jeanne E. Arnold. « Prehistoric Marine Mammal Hunting on California's Northern Channel Islands ». American Antiquity 63, no 4 (octobre 1998) : 679–701. http://dx.doi.org/10.2307/2694115.
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Prehistoric marine mammal hunting is of interest to archaeologists worldwide because these animals were exploited by a wide range of coastal societies. Sorting out the roles of particular groups of fauna in prehistoric economies requires detailed attention to the analysis of the entire faunal assemblage. Although marine mammals typically provided large quantities of fat and protein and were desirable prey, they were not always central to the diets of the groups that exploited them, particularly in temperate zones. To evaluate effectively the importance of marine mammal exploitation, scholars should calculate the relative contribution of these animals to the economy, identify changes in hunting techniques, determine the relationship between fauna and other aspects of society, assess changing environmental conditions, and consider alternate explanations for those relationships. A large body of research on the northern Channel Islands of California demonstrates that fishing was relatively more important than marine mammal exploitation in subsistence and in stimulating sociopolitical and technological developments. Recent attempts to credit marine mammal hunting as a driving force in the invention of the plank canoe and the evolution of a chiefdom in the Santa Barbara Channel area misunderstand environmental factors and site histories in this region. Rather than assuming that a pan-Pacific Coast set of traditions existed to exploit these taxa, we see evidence of local and regional differences rooted in variable cultural settings, physiographic and oceanographic conditions, and available technologies. Data from the Santa Barbara Channel are used to explore the relationships among marine mammal use, sociological change, and environmental change.
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Domingo, M. Soledad, Catherine Badgley, Beatriz Azanza, Daniel DeMiguel et M. Teresa Alberdi. « Diversification of mammals from the Miocene of Spain ». Paleobiology 40, no 2 (2014) : 197–221. http://dx.doi.org/10.1666/13043.
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The mammalian fossil record of Spain is long and taxonomically well resolved, offering the most complete record of faunal change for the Neogene of Europe. We evaluated changes in diversification, composition, trophic structure, and size structure of large mammals over the middle and late Miocene with methods applied to this record for the first time, including ordination of fossil localities to improve temporal resolution and estimation of confidence intervals on taxa temporal ranges. By contrast, analysis within the traditional Mammal Neogene (MN) biochronology obscures important aspects of diversification. We used inferred temporal ranges of species and evaluated per capita rates of origination, extinction, diversification, and turnover over 0.5-Myr time intervals.Three periods of significant faunal change occurred between 12.0 and 5.5 Ma: (1) From 12.0 to 10.5 Ma, elevated origination rates led to an increase in diversity without significant change in ecological structure. Immigrants and geographic-range shifts of species to lower latitudes during an interval of global cooling contributed to these faunal changes. (2) From 9.5 to 7.5 Ma, high extinction rates followed by high origination rates coincided with significant changes in taxonomic composition and ecological structure. These changes represent the Vallesian Crisis, with replacement of a fauna of forest affinities (with frugivores and browsers) by a fauna of open woodlands (with grazers and mixed feeders). (3) From 6.5 to 5.5 Ma, high extinction rates reduced diversity without substantial changes in ecological structure, and large mammal faunas became highly endemic across the northern Mediterranean region. This interval includes the Messinian Salinity Crisis, the desiccation of the Mediterranean basin. Extinction may have been caused by geographic isolation and aridification, with evolution of endemic lineages giving rise to new species in the early Pliocene. These distinct macroevolutionary patterns of faunal change correspond to different geographic scales of inferred climatic and tectonic drivers.
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Roshier, David A., Felicity L. Hotellier, Andrew Carter, Leah Kemp, Joanne Potts, Matt W. Hayward et Sarah M. Legge. « Long-term benefits and short-term costs : small vertebrate responses to predator exclusion and native mammal reintroductions in south-western New South Wales, Australia ». Wildlife Research 47, no 8 (2020) : 570. http://dx.doi.org/10.1071/wr19153.
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Abstract ContextThe success of conservation fences at protecting reintroduced populations of threatened mammals from introduced predators has prompted an increase in the number and extent of fenced exclosures. Excluding introduced species from within conservation fences could also benefit components of insitu faunal assemblages that are prey for introduced predators, such as reptiles and small mammals. Conversely, reintroduced mammals may compete with smaller mammals and reptiles for resources, or even prey on them. AimsIn a 10-year study from 2008, we examine how small terrestrial vertebrates respond to the exclusion of introduced predators, the feral cat (Felis catus) and red fox (Vulpes Vulpes), introduced herbivores and the reintroduction of regionally extinct mammal species. MethodsDifferences in the yearly relative abundance of reptiles and mammals according to habitat type and whether sites were fenced or not, were tested using multivariate generalised linear models. Next, we calculated univariate P-values to identify individual species that showed significant relationships, positive and negative, with any of the explanatory variables. Key resultsTotal captures of reptiles were lower inside the conservation fence in all years, whereas total captures of small mammals were markedly higher inside the fenced area, notably in dasyurids. ConclusionOur results showed that conservation fences can deliver benefits for some fauna (but not all) beyond facilitating the reintroduction of highly threatened mammals. ImplicationsOur results demonstrated the consequential impacts of introduced predators on the Australian small mammal fauna, and showed that predator-exclusion fences can be an effective conservation intervention for this guild.
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Woinarski, John C. Z., Andrew A. Burbidge et Peter L. Harrison. « Ongoing unraveling of a continental fauna : Decline and extinction of Australian mammals since European settlement ». Proceedings of the National Academy of Sciences 112, no 15 (9 février 2015) : 4531–40. http://dx.doi.org/10.1073/pnas.1417301112.
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The highly distinctive and mostly endemic Australian land mammal fauna has suffered an extraordinary rate of extinction (>10% of the 273 endemic terrestrial species) over the last ∼200 y: in comparison, only one native land mammal from continental North America became extinct since European settlement. A further 21% of Australian endemic land mammal species are now assessed to be threatened, indicating that the rate of loss (of one to two extinctions per decade) is likely to continue. Australia’s marine mammals have fared better overall, but status assessment for them is seriously impeded by lack of information. Much of the loss of Australian land mammal fauna (particularly in the vast deserts and tropical savannas) has been in areas that are remote from human population centers and recognized as relatively unmodified at global scale. In contrast to general patterns of extinction on other continents where the main cause is habitat loss, hunting, and impacts of human development, particularly in areas of high and increasing human population pressures, the loss of Australian land mammals is most likely due primarily to predation by introduced species, particularly the feral cat, Felis catus, and European red fox, Vulpes vulpes, and changed fire regimes.
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Godthelp, Henk, Michael Archer, Richard Cifelli, Suzanne J. Hand et Coral F. Gilkeson. « Earliest known Australian Tertiary mammal fauna ». Nature 356, no 6369 (avril 1992) : 514–16. http://dx.doi.org/10.1038/356514a0.
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Bonvicino, C. R., B. Lemos et M. Weksler. « Small mammals of Chapada dos Veadeiros National Park (Cerrado of Central Brazil) : ecologic, karyologic, and taxonomic considerations ». Brazilian Journal of Biology 65, no 3 (août 2005) : 395–406. http://dx.doi.org/10.1590/s1519-69842005000300004.
Texte intégralRésumé :
This work is based on a survey of small mammals carried out in the Chapada dos Veadeiros National Park, a natural reserve located in the mountains of the Planalto Central Goiano in the Cerrado of Central Brazil. The 227 specimens collected represented six marsupial and 13 rodent species. Taxonomic, karyologic, and ecologic considerations are present and discussed in the present work. Our data reflected the faunal heterogeneity with respect to both elevation and vegetation because only eight of the 19 species were collected at both high and low elevations. The composition of the small mammal fauna of the park is influenced by predominance of forest formations at low elevations and cerrado with rupestrian areas at high elevations. Presence of endemic species and one undescribed demonstrated that the cerrado has an endemic fauna and a little known diversity of small mammals.
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Agadjanian, Alexander K., et Peter Kondrashov. « Late Pleistocene (Eemian) mollusk and small mammal fauna from Mikhailovka-5 (Kursk oblast, Central Russia) ». Fossil Imprint 76, no 1 (2020) : 17–39. http://dx.doi.org/10.37520/fi.2020.003.
Texte intégralRésumé :
The locality Mikhailovka-5 is situated in the northern part of the Mikhailovka quarry in the northwest of the Kursk Oblast in central Russia. A rich mollusk fauna was collected along with small mammal remains from this lacustrine deposit located between Likhvinian (= Holsteinian) fossil soils and Valdayian (= Weichselian) periglacial deposits. The small mammal fauna is diverse, and includes numerous rodents, e.g., such indicative taxa as Arvicola ex gr. sapidus and Microtus ex gr. agrestis, a significant number of Clethrionomys glareolus and various insectivores. This assemblage closely corresponds to other Mikulino (= Eemian) faunas from the Russian Plain. The mollusk fauna includes a large number of terrestrial species, some of which have currently a more southern and western distribution. Both the molluskan and mammal faunas from Mikhailovka-5 indicate temperate climatic conditions, as evidenced by the diversity of insectivores, particularly the moles. Abundant remains of rodents of the genera Clethrionomys, Apodemus, and Microtus (Terricola) and of mollusks such as Acme, Macrogastra, Ruthenica, Punctum, and Acanthinula indicate the presence of extensive woodlands of mixed or broadleaf type, which were typical for this latitude during the Eemian interglacial. The palaeontological data provided in this paper, confirm that Mikhailovka-5 belongs to the Mikulino interglacial, as previously suggested by pedological arguments.
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Hamilton, Marian I., B. Lee Drake, W. H. Wills, Emily Lena Jones, Cyler Conrad et Patricia L. Crown. « STABLE OXYGEN ISOTOPE SOURCING OF ARCHAEOLOGICAL FAUNA FROM CHACO CANYON, NEW MEXICO ». American Antiquity 83, no 1 (16 novembre 2017) : 163–75. http://dx.doi.org/10.1017/aaq.2017.61.
Texte intégralRésumé :
Modern datasets provide the context necessary for accurate interpretations of isotopic data from archaeological faunal assemblages. In this study, we use the oxygen isotope ratios (δ18O) of modern small mammals from Chaco Canyon, New Mexico, to quantify expected isotopic variation in a local population. The δ18O values of local, modern small mammals encompass a broad range (−6.0‰ to 4.8‰ VPDB), which is expected given the extreme seasonal variation in the δ18O of precipitation on the Colorado Plateau (−11‰ to −3‰ VPDB). Isotopic ratios of small mammals obtained from excavated archaeological sites in Chaco Canyon (ca. AD 800 to 1200) show no significant differences with their modern counterparts, suggesting that there is no difference in the origins of the archaeological small-mammal collection and the modern, local Chaco Canyon small-mammal collection. In contrast, δ18O values of large mammals from Chaco archaeological sites are significantly different from those of modern specimens, reflecting a nonlocal, but also nonspecific, source in the past.
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Lyman, R. Lee. « Taxonomic composition and body-mass distribution in the terminal Pleistocene mammalian fauna from the Marmes site, southeastern Washington State, U.S.A. » Paleobiology 39, no 3 (2013) : 345–59. http://dx.doi.org/10.1666/12039.
Texte intégralRésumé :
Mean adult body mass of mammal taxa is a fundamental ecological variable. Variability in the distributions of body masses of a mammal fauna suggest variability in habitat structure. Mammal remains from the Marmes archaeological site in southeastern Washington State date between 13,200 and 10,400 b.p., during the Pleistocene–Holocene transition (PHT). Known environmental history prompts the expectations that the Marmes PHT mammal remains should represent greater species richness and a larger array of body-mass sizes than modern faunas in the Marmes locale and in open shrub-steppe habitats, and lower species richness and a smaller array of body-mass sizes than modern faunas in closed forest habitats; species richness and the array of body-mass sizes should be similar to that for a mixed habitat of cool shrub-steppe with scattered conifers. The Marmes PHT cenogram meets these expectations. Body-mass clumps displayed by the Marmes PHT mammal fauna fall between those of closed forests and open shrub-steppe habitats in terms of clump richness and breadth, and in terms of gap width. Marmes PHT body-mass clumps are very similar to those for the mixed habitat. Cenograms and body-mass clumps confirm conclusions drawn 40 years ago that the Marmes PHT habitat was much like that of today but cooler and with more plant biomass and greater structural diversity than today.
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Markova, Anastasia, et Andrey Puzachenko. « Preliminary Analysis of European Small Mammal Faunas of the Eemian Interglacial : Species Composition and Species Diversity at a Regional Scale ». Quaternary 1, no 2 (26 juillet 2018) : 9. http://dx.doi.org/10.3390/quat1020009.
Texte intégralRésumé :
Small mammal remains obtained from the European localities dated to the Eemian (Mikulino) age have been analyzed for the first time at a regional scale based on the present biogeographical regionalization of Europe. The regional faunas dated to the warm interval in the first part of the Late Pleistocene display notable differences in fauna composition, species richness, and diversity indices. The classification of regional faunal assemblages revealed distinctive features of small mammal faunas in Eastern and Western Europe during the Eemian (=Mikulino, =Ipswichian) Interglacial. Faunas of the Iberian Peninsula, Apennine Peninsula, and Sardinia Island appear to deviate from the other regions. In the Eemian Interglacial, the maximum species richness of small mammals (≥40 species) with a relatively high proportion of typical forest species was recorded in Western and Central Europe and in the western part of Eastern Europe. The lowest species richness (5–14 species) was typical of island faunas and of those in the north of Eastern Europe. The data obtained make it possible to reconstruct the distribution of forest biotopes and open habitats (forest-steppe and steppe) in various regions of Europe. Noteworthy is a limited area of forests in the south and in the northeastern part of Europe. In these regions, it seems likely that under conditions of relatively high temperatures characteristic of the Last Interglacial and an insufficient moisture supply there could exist open forest stands or forest-steppe landscapes, as suggested by the presence of species indicative of forest-steppe and steppe north of the forest zone. The results obtained are useful in modeling changes in the mammal faunas as well as environmental changes in entire Europe due to global climatic changes (including the global warming recorded at present).
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Markova, A. K., et A. Yu Puzachenko. « MIDDLE PLEISTOCENE SMALL MAMMAL fAUNAS Of EUROPE : EVOLUTION, BIOSTRATIGRAPHY, CORRELATIONS ». GEOGRAPHY, ENVIRONMENT, SUSTAINABILITY 11, no 3 (29 septembre 2018) : 21–38. http://dx.doi.org/10.24057/2071-9388-2018-11-3-21-38.
Texte intégralRésumé :
The paper is concerned with the small mammal fauna evolution in Europe in the Middle Pleistocene. The information on the faunas of the end of the Early Pleistocene has been also taken into consideration. The data available made possible identifying several stages in the small mammal evolution. Not all intervals within the Middle Pleistocene are provided with sufficient information for recognizing individual stages; that is particularly true for the cold periods of the Middle Pleistocene – the Donian and the Okian glaciations (=Elsterian, =Anglian). Based on the studies of small mammal localities, the biostratigraphic scheme has been developed, the principal phylogenetic lineages of Arvicolinae were traced, and maps of the Middle Pleistocene small mammal localities have been compiled
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McElhinny, C., P. Gibbons, C. Brack et J. Bauhus. « Fauna-habitat relationships : a basis for identifying key stand structural attributes in temperate Australian eucalypt forests and woodlands ». Pacific Conservation Biology 12, no 2 (2006) : 89. http://dx.doi.org/10.1071/pc060089.
Texte intégralRésumé :
We review a representative sample of the literature concerning fauna-habitat relationships in temperate Australian eucalypt forests and woodlands as a basis for identifying some key stand structural attributes in these ecosystems. Our review identifies 56 studies in south-east and south-west Australia in which the presence or abundance of different fauna were significantly associated with vegetation structural attributes at the scale of a stand. The majority of these studies concern bird, arboreal mammal, and ground mammal habitat requirements, with relatively few studies addressing the habitat requirements of reptiles, invertebrates, bats or amphibians. We identify 34 key structural attributes from these 56 studies, by grouping similar attributes, and then representing each group with a single generic attribute. Relatively few of these attributes are incorporated into indices used to quantify fauna habitat. We highlight the need for a quantitative method for selecting which key attributes should form the basis for an index of structural complexity or other surrogate measure of faunal diversity.
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Brocardo, Carlos Rodrigo, Raisa Rodarte, Rafael da Silveira Bueno, Laurence Culot et Mauro Galetti. « Non-volant mammals of Carlos Botelho State Park, Paranapiacaba Forest Continuum ». Biota Neotropica 12, no 4 (décembre 2012) : 198–208. http://dx.doi.org/10.1590/s1676-06032012000400021.
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The Atlantic Forest is one of the most studied Brazilian biomes in relation to its mammalian fauna. However, there is still a series of gaps of knowledge about the distribution and persistence of some of these species which prevents taking adequate conservation measures to better protect the mammals. In order to make the inventory of the non-volant mammalian fauna of the Carlos Botelho State Park (SP), we compiled data of camera trapping, diurnal census, track records, pitfall and live trapping collected over 8 years (2004-2012). We registered a total of 53 species, of which 12 are regionally threatened and one is an exotic species (Lepus europaeus), including the presence of most mammal species expected for the Paranapiacaba Forest Continuum. The high non-volant mammals species richness allied to the presence of threatened species, strengthen the role of this protected area for mammal conservation in the Atlantic Forest. Although, the local extinction of one species, Tayassu pecari, alert to the need for effective measures of protection.
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A. Cousin, Jarrad. « Urban wildlife : more than meets the eye ». Pacific Conservation Biology 11, no 3 (2005) : 225. http://dx.doi.org/10.1071/pc050225.
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Ever since European settlement of Australia, there have been countless species of fauna which have dramatically declined in distribution and abundance. In the past 200 years, at least 21 species of birds and 19 species of mammals have become extinct (Burgman and Lindenmayer 1998). This pattern of extinction is evident throughout the mainland and islands of Australia, although the local extinction of fauna in urban areas is often overlooked. How and Dell (2000) present alarming data on the plight of urban fauna in Perth, where over half of the native mammal species have become locally extinct.
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TOYRAN, Kubilay, Tarkan YORULMAZ et Serdar GÖZÜTOK. « Mammal Fauna of Ihlara Valley (Aksaray, Turkey) ». Bitlis Eren University Journal of Science and Technology 7, no 2 (26 décembre 2017) : 108–14. http://dx.doi.org/10.17678/beuscitech.354058.
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Maroo, S., et D. W. Yalden. « The Mesolithic mammal fauna of Great Britain ». Mammal Review 30, no 3-4 (décembre 2000) : 243–48. http://dx.doi.org/10.1046/j.1365-2907.2000.00073.x.
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Kim, Tae-Wook, Byoung-Su Kim, Min-Ho Chang, Su-Gon Park, Sang-Hyun Han et Hong-Shik Oh. « Mammal Fauna in Mt. Unmun, South Korea ». Environmental Biology Research 31, no 1 (30 mars 2013) : 53–59. http://dx.doi.org/10.11626/kjeb.2013.31.1.053.
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Zamora-Espinoza, Mayra, Juan Carlos López-Acosta et Eduardo Mendoza. « Anthropogenic perturbation modifies interactions between mammals and fruits in a tropical forest of southern Mexico ». Animal Biology 71, no 3 (30 août 2021) : 311–27. http://dx.doi.org/10.1163/15707563-bja10056.
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Abstract Studies of tropical mammal defaunation highlight the loss of species as well as their reduction in abundance and diversity; however, there is a complex series of effects associated with this anthropogenic disruption, including increases in the relative abundance of disturbance-tolerant mammals and the arrival of alien mammals whose effects on biotic interactions have been poorly studied. We compared the species richness, composition, interaction strength, and patterns of daily activity of mammals that consume the fruits of Pouteria sapota on the forest floor, both inside and outside of the Los Tuxtlas Field Station (LTFS) in Veracruz, southern Mexico. Using camera traps, we recorded eight mammal species interacting with the fruits inside the LTFS ( trees) and nine species interacting outside ( trees). Alien species such as Canis lupus familiaris were recorded both inside and outside of the LTFS, whereas Bos taurus was only recorded outside. Medium-sized generalist mammals were overrepresented both inside and outside of the LTFS, evidencing an impoverishment of the fauna, when compared to the mammal assemblage reported to interact with P. sapota fruits in a more intact forest. The daily activity patterns of the mammals that interacted strongly with P. sapota fruits were different inside and outside the LTFS, particularly in the case of Cuniculus paca. Our results show that the impact of human activity is highly pervasive, directly affecting the mammalian fauna at different levels and indirectly affecting the biotic interactions in which these animals are involved.
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Lazariev, Denys. « Alien mammals in ecosystems of eastern Ukraine : a history of research and appearance of species ». Theriologia Ukrainica 2022, no 24 (30 décembre 2022) : 216–28. http://dx.doi.org/10.15407/tu2418.
Texte intégralRésumé :
The paper presents a review of the history of investigations and formation of the adventive component of the mammal fauna in eastern Ukraine, mainly in the territory of the left bank of the Siversky Donets, within the area of the eastern part of Ukraine (Donetsk, Luhansk, and Kharkiv oblasts). Most of these territories are part of the steppe zone of Ukraine. They are characterised by such edge effects as depletion of the steppe fauna and emergence of azonal species. Throughout almost 170 years of mammal studies in the region, the research directions and the processes of fauna formation have changed. The goal of this paper is to review the history of research and the available data on the appearance and expansion of new for this region species. We distinguish several periods in the history of the formation of the adventitious component of the mammal fauna and in its research. First, in the 19th and early 20th centuries, there was a gradual accumulation of knowledge about the fauna of those regions. At that time, the territories underwent essential transformations. The active usage of lands for agriculture started, and, as a result, the steppe was split into local, isolated ecosystems with insignificant virgin areas. In the middle of the 20th century, the study of ecology and economic importance of mammals gained the attention of researchers. During this period, the intensity and character of distribution of the species increased: from a moderate spread of micromammals as a result of agricultural development to a more intensive distribution of game species as a result of intentional introduction of animals or their escape from culture. In the late 20th and early 21st centuries, the question of alien species become more prominent. This issue drew the attention of many researchers, and adventive traits were described for various mammals. As a result of our study, we could outline the chronology of the appearance of alien species in eastern Ukraine, as well as the main patterns of their distribution. Historical data allows for concluding that a notable part of the local fauna was formed as a result of invasions and expansion, and these processes are still relevant in the modern period of fauna development. It was established that the changes in the local fauna is closely related to land transformations and shifts in human economic activity.
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Kleivane, L., T. Severinsen et J. U. Skaare. « Biological transport and mammal to mammal transfer of organochlorines in Arctic fauna ». Marine Environmental Research 49, no 4 (mai 2000) : 343–57. http://dx.doi.org/10.1016/s0141-1136(99)00079-3.
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Jones, Holly P., Nick D. Holmes, Stuart H. M. Butchart, Bernie R. Tershy, Peter J. Kappes, Ilse Corkery, Alfonso Aguirre-Muñoz et al. « Invasive mammal eradication on islands results in substantial conservation gains ». Proceedings of the National Academy of Sciences 113, no 15 (21 mars 2016) : 4033–38. http://dx.doi.org/10.1073/pnas.1521179113.
Texte intégralRésumé :
More than US$21 billion is spent annually on biodiversity conservation. Despite their importance for preventing or slowing extinctions and preserving biodiversity, conservation interventions are rarely assessed systematically for their global impact. Islands house a disproportionately higher amount of biodiversity compared with mainlands, much of which is highly threatened with extinction. Indeed, island species make up nearly two-thirds of recent extinctions. Islands therefore are critical targets of conservation. We used an extensive literature and database review paired with expert interviews to estimate the global benefits of an increasingly used conservation action to stem biodiversity loss: eradication of invasive mammals on islands. We found 236 native terrestrial insular faunal species (596 populations) that benefitted through positive demographic and/or distributional responses from 251 eradications of invasive mammals on 181 islands. Seven native species (eight populations) were negatively impacted by invasive mammal eradication. Four threatened species had their International Union for the Conservation of Nature (IUCN) Red List extinction-risk categories reduced as a direct result of invasive mammal eradication, and no species moved to a higher extinction-risk category. We predict that 107 highly threatened birds, mammals, and reptiles on the IUCN Red List—6% of all these highly threatened species—likely have benefitted from invasive mammal eradications on islands. Because monitoring of eradication outcomes is sporadic and limited, the impacts of global eradications are likely greater than we report here. Our results highlight the importance of invasive mammal eradication on islands for protecting the world's most imperiled fauna.
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Pardi, Melissa I., et Russell W. Graham. « Time averaging and late Quaternary ecological replacement in Don’s Gooseberry Pit, South Dakota, USA ». Quaternary Research 89, no 1 (6 décembre 2017) : 307–17. http://dx.doi.org/10.1017/qua.2017.100.
Texte intégralRésumé :
AbstractLate Quaternary small mammal faunas document ecological change and biotic responses to past climates but are especially rare in some geographic regions such as the North American Great Plains. Don’s Gooseberry Pit (DGP), a cave in the southeastern Black Hills of South Dakota, USA, contains a fauna documenting small mammal community composition shifts and environmental change over the last 18,000 yr in this data-depauperate region. Although the stratigraphy of the cave appears to be primary, disparate radiocarbon dates indicate that there is mixing of the fauna throughout. A paleoenvironmental signal consistent with regional reconstructions still emerges from an analysis of the stratigraphically ordered fauna. Dated taxa from DGP record the ecological replacement of Dicrostonyx by Myodes and later Microtus in response to late Quaternary warming. Individually dated specimens of Dicrostonyx richardsoni confirm late survival of this cold-adapted taxon in the Black Hills (17,083 cal yr BP). Our results indicate that a coarse paleoecological signal is present in DGP, and that the Black Hills served as a “high-altitude” refugium for cold-adapted species following the end of the last glacial period.
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Menkhorst, KA, et JCZ Woinarski. « Distribution of mammals in monsoon rainforests of the Northern Territory ». Wildlife Research 19, no 3 (1992) : 295. http://dx.doi.org/10.1071/wr9920295.
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The mammal fauna of 50 patches of monsoon rainforest in the Northern Territory, Australia, was surveyed. No mammal species is restricted to this habitat, and most of the region's marnmal fauna uses it at least occasionally. Mammal species composition within monsoon rainforests undergoes substantial variation along an extensive environmental gradient reflecting moisture condition and rockiness. For most mammal species, variation in abundance among patches was related more to the position of the patch on this environmental gradient than to patch size or extent of disturbance. Disturbance was positively correlated with the richness and abundance in quadrats of three taxonomic groupingsrodents, 'other' native species, and all native species (other than bats)-and negatively correlated with richness and abundance of macropods. Compared with surrounding (open forest and savanna woodland) vegetation, monsoon rainforests have few grazing herbivores and small granivorous rodents, but more species that eat fleshy fruits and seeds from woody plants. The mammal fauna of monsoon rainforests in the Northern Territory is similar to that of monsoon rainforests of the Kimberley (to the west) but unlike that of wet tropical rainforests in Cape York (to the east). These differences, and the current impoverishment of the mammal fauna of the Northern Territory monsoon rainforest, are attributable to historical processes and the current small area of this highly fragmented monsoon rainforest estate. Three bat species may be important for pollination and dispersal of monsoon rainforest plants.
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Rojek, Nora A., et Jeffrey C. Williams. « Present-Day Assemblage of Birds and Mammals in the Islands of Four Mountains, Eastern Aleutians, Alaska ». Quaternary Research 91, no 03 (11 juin 2018) : 1059–74. http://dx.doi.org/10.1017/qua.2018.36.
Texte intégralRésumé :
AbstractWe compiled present-day observations and survey data of the avian and mammal fauna in the Islands of Four Mountains, Alaska, which primarily consist of marine-adapted species, to provide insight into the prehistoric fauna found in the archaeological record. We documented 63 bird species, mainly seabirds (67%). The majority (71%) of the estimated number of breeding birds are ledge nesters, predominately murres, and most (68%) spend the majority of their lives in the offshore environment. We lack good estimates for burrow and crevice nesters, which were impacted by and are still recovering from a period of arctic fox farming in the twentieth century. Marine mammals, predominately Steller sea lion, harbor seal, and sea otter, primarily use accessible land as haul-outs and are found in low numbers compared with the rest of the Aleutians. Red fox, the only land mammal, presently only reside on Chuginadak Island. While the present-day fauna is similar to the fauna recorded in the archaeological record, we found no indication of nesting by ancient murrelets and northern fulmars in the Island of Four Mountains, whereas both species were present in midden sites on Carlisle and Chuginadak Islands, with the possibility of prehistoric breeding colonies on Carlisle Island.
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Bajaru, Sameer, Amol R. Kulavmode et Ranjit Manakadan. « Small mammals in the human-dominated landscape in the northern Western Ghats of India ». Journal of Threatened Taxa 13, no 2 (27 février 2021) : 17619–29. http://dx.doi.org/10.11609/jott.5710.13.2.17619-17629.
Texte intégralRésumé :
The Western Ghats biodiversity hotspot is under huge anthropogenic pressure, with unique flora and fauna facing severe threats from habitat fragmentation, loss, and degradation. The northern Western Ghats has been poorly studied for its small mammal fauna, hence we examined small mammals near Pune from 2014 to 2017. Live trapping was carried out in irrigated and rainfed agriculture fields, forests, and grasslands at low, mid, and high elevations. A total of 538 individuals were trapped, representing 17 species of rodents and one shrew. Most abundantly captured species were Millardia kondana (23%), Mus saxicola (19%), Suncus murinus (17%), and Mus booduga (13%). Species richness and abundance of small mammals varied across the habitats. High elevation grasslands were species-rich relative to low elevation grasslands and forests. Our observations indicate that human disturbances play a role in determining the richness and abundance of small mammals in the area, where populations are under threat from urbanization, tourism, agriculture, grazing, and fire. Habitat and species specific conservation measures need to be taken, coupled with in-depth species–habitat relationship studies, for the conservation of small mammal diversity of the northern Western Ghats.
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Popova, L., M. Krochak, O. Krokhmal' et E. Tzyzh. « MIDDLE PLEISTOCENE SMALL MAMMAL FAUNA OF THE CAVE LOCALITY AT VINYAVY (L'VIV REGION) ». Visnyk of Taras Shevchenko National University of Kyiv. Geology, no 2 (85) (2019) : 23–27. http://dx.doi.org/10.17721/1728-2713.85.03.
Texte intégralRésumé :
A new locality of the Pleistocene small mammals at Vynyavy (L'viv region) has been discovered in the filling of rock shelters beneath the massive well-cemented sandstone of the Opillia Suite of the Badenian, the Middle Neogene. The locality was formed as a result of pellet accumulation. Predators, whose activity was forming the taphocoenosis, were birds and predatory beasts that inhabited the rock shelters and small caves in the looser underlying sandstone. The fauna includes fossils of insectivores, lagomorphs and rodents. The presence of Arvicolachosaricus and the evolutionary level of other arvicolidsallow identification this fauna as Khasarian one. The closest analogue of Vynyavy, with respect to the geological age, is a fauna from sub-moraine deposits of the Dnieper area, Matviivka. Ecologically, Vynyavy fauna shows similarity with Medzhybizh (Syngilian fauna of the Bug area). Geological age of the locality is the Middle Pleistocene, Dnieprovian climatolith, and, taking into account ecological features of the fauna, most likely, its beginning. On the basis of small mammal fauna, open steppe habitats should be reconstructed for the time span presented by Vynyavy fauna. Climate was colder than the present one, although not extremely cold, which is evidenced by the presence of insectivores. Climate was also wet enough, as soon as all xerophillous species are absent. Special characteristic feature is the absence of Laguridae, usual for the Pleistocene of Ukrainian group. Arctic component is presented by a lemming. High percentage of the water vole in the taphocoenosis indicates extensive areas of flood-plains and high fluvial activity, which could be expected during interstadials rather than during cold epochs. Otherwise, a decrease of seasonal floods would have resulted in foresting of valley and, as a consequence, in the appearance of forest mammal species, which are observed in Vinyavy fauna. Remains of ground squirrels belong to Spermophilusodessanus, a fact that supports a recent (Holocene) colonization of this area by its present inhabitant, S. citellus.
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Haugaasen, Torbjørn, et Carlos A. Peres. « Mammal assemblage structure in Amazonian flooded and unflooded forests ». Journal of Tropical Ecology 21, no 2 (16 février 2005) : 133–45. http://dx.doi.org/10.1017/s026646740400207x.
Texte intégralRésumé :
Few studies have contrasted faunal communities between flooded and unflooded tropical forests, and such attempts have largely been restricted to a few taxonomic groups. We present the first comparison of the composition and structure of an entire assemblage of mid-sized to large-bodied mammals in adjacent unflooded (terra firme) and flooded (várzea) forests of central-western Amazonia. We extend this comparison to 13 other terra firme and várzea forest sites in order to examine the fundamental dichotomy between mammal communities in these Amazonian environments. We found a consistently impoverished fauna in várzea environments both in terms of primates and other non-volant mammals, although primate density and biomass was substantially higher in várzea than in terra firme. The average Bray–Curtis mammal community dissimilarity between terra firme and várzea forests was 74%, whereas mean dissimilarity within várzea and terra firme samples was 40% and 39%, respectively. The results seem to be largely a function of high habitat heterogeneity and floristic diversity in terra firme and the physical connectivity and proximity of várzeas to adjacent terra firme forests. We suggest that inundated forests should be set aside as a crucial complement to Amazonian reserves dominated by terra firme forests in future biodiversity conservation planning.
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Lawes, Michael J., Brett P. Murphy, Alaric Fisher, John C. Z. Woinarski, Andrew C. Edwards et Jeremy Russell-Smith. « Small mammals decline with increasing fire extent in northern Australia : evidence from long-term monitoring in Kakadu National Park ». International Journal of Wildland Fire 24, no 5 (2015) : 712. http://dx.doi.org/10.1071/wf14163.
Texte intégralRésumé :
Small mammal (<2 kg) numbers have declined dramatically in northern Australia in recent decades. Fire regimes, characterised by frequent, extensive, late-season wildfires, are implicated in this decline. Here, we compare the effect of fire extent, in conjunction with fire frequency, season and spatial heterogeneity (patchiness) of the burnt area, on mammal declines in Kakadu National Park over a recent decadal period. Fire extent – an index incorporating fire size and fire frequency – was the best predictor of mammal declines, and was superior to the proportion of the surrounding area burnt and fire patchiness. Point-based fire frequency, a commonly used index for characterising fire effects, was a weak predictor of declines. Small-scale burns affected small mammals least of all. Crucially, the most important aspects of fire regimes that are associated with declines are spatial ones; extensive fires (at scales larger than the home ranges of small mammals) are the most detrimental, indicating that small mammals may not easily escape the effects of large and less patchy fires. Notwithstanding considerable management effort, the current fire regime in this large conservation reserve is detrimental to the native mammal fauna, and more targeted management is required to reduce fire size.
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Drebet, Mykhailo. « Monitoring of the mammal fauna by studying owl pellets : a case of small mammals in protected areas of Podillia ». Theriologia Ukrainica 2022, no 24 (30 décembre 2022) : 16–27. http://dx.doi.org/10.15407/tu2404.
Texte intégralRésumé :
Using owl pellets analysis to monitor mammals in protected areas makes it possible to accumulate a unique material to study the distribution and relative abundance of both common and rare species. Due to the ease of collecting and accumulating of pellets, this method helps to quickly obtain a large amount of material to monitor the changes in natural areas and objects during certain time intervals without interfering with the course of natural processes. The proportions of small-mammal species in the diet of most owls are representative of the proportions of species in their groups. Therefore, the pellet method can be used to organise monitoring of mammal species of natural regions. We analysed nearly 2000 pellets of several species of owls collected in Podillia in the course of the study. Pellets are mostly collected within protected areas. Small mammals form the basis of the diet of the studied species of owls. The diet of the short-eared owl is the most diverse, and it includes 18 species of small mammals. The common vole occurs the most often. The diet of other owl species is also diverse, in particular of the little owl, tawny owl, and eagle owl. As in the case of the short-eared owl, the main prey of the barn owl and grey owl is a common species—the common vole. The diet of the eagle owl, unlike others, is dominated by larger small-mammal species—brown rat, white-breasted hedgehog, and European hamster. In addition to common species, the analysis of owl pellets allows us to identify not only the most common, but also rare species, such as the European hamster, bicoloured shrew, lesser white-toothed shrew, and various bats. Therefore, the pellet method of research is highly effective in analysing the composition of the fauna and the structure of communities, of both prey and predator species. Owl pellet analysis is a valuable asset during small-mammal monitoring studies, and is especially useful for sampling of indicator small-mammal species during environmental impact assessments in protected areas. The method has considerable advantages compared to standard survey methods of small mammals— it does not require the removal of animals from the natural environment, which makes it relevant for use in protected areas.
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Gheerbrant, Emmanuel, et Humberto Astibia. « Addition to the Late Cretaceous Laño mammal faunule (Spain) and to the knowledge of European “Zhelestidae” (Lainodontinae nov.) ». Bulletin de la Société Géologique de France 183, no 6 (1 décembre 2012) : 537–46. http://dx.doi.org/10.2113/gssgfbull.183.6.537.
Texte intégralRésumé :
Abstract New mammal material from the Campano-Maastrichtian locality of Laño, Spanish Basque Country documents two new zhelestid eutherian species referred to the genus Lainodon. This material enlightens the upper molar pattern of the European zhelestids and confirms their originality and homogeneity. The European zhelestids are included in the new subfamily Lainodontinae, which is distinct and characterized by a mosaic of primitive and specialized features. The Lainodontinae clade adds to other endemic vertebrate taxa (among multituberculates, flightless birds, dinosaurs, and turtles) that typify the Late Cretaceous fauna of the European Archipelago. The material from Laño provides further evidence of a modest but significant lainodontine radiation known by five or six species belonging to two or three genera (Lainodon, Labes, ? Valentinella), which is currently restricted to western Europe, i.e. to the Ibero-Armorican Island. The plesiomorph features of the Lainodontinae (lower molar trigonid poorly compressed, upper molar without lingual cingulum) recall the earliest known zhelestids, and suggest an Asian origin from a Sheikhdzheilia-like stem lineage at the beginning of the Late Cretaceous. This dispersal event from Asia probably involved other vertebrate taxa, such as the multituberculate stem group of the kogaionid mammals and the hadrosaurid dinosaurs. The zhelestid subfamily Lainodontinae represents the most diverse and dominant taxon in the western European Late Cretaceous mammal fauna, which is eutherian-dominated, by contrast to the eastern European Late Cretaceous mammal fauna which is dominated by an original and at that time exclusive radiation of kogaionid multituberculates.
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Agadzhanyan, Alexandre K., Inesa A. Vislobokova, Mikhail V. Shunkov et V. A. Ulyanov. « Pleistocene mammal fauna of the Trlica locality, Montenegro ». Fossil Imprint 73, no 1-2 (15 août 2017) : 93–114. http://dx.doi.org/10.2478/if-2017-0005.
Texte intégralRésumé :
The paper presents new evidence on the small and large mammal fauna from the Trlica locality, Montenegro, based on our records from the 2010 – 2014 excavations. It is shown that the lower layers of the locality correspond to the Early Pleistocene, and the upper layers are dated as the beginning of the Middle Pleistocene. The results obtained allow us to characterize the environment in which the oldest hominid migrants dwelt in this region of South-Eastern Europe. Within the interval 1.8–1.5 Ma, there was a relatively cool climate in the region. At the beginning of the Middle Pleistocene, the climate became milder; the areas occupied by forests, including broad-leaved forests, increased. The presence of Lagurini throughout the section is evidence of the existence of local areas of steppe in northern Montenegro during the Early Pleistocene and first half of the Middle Pleistocene.
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Nikanorova, A. M., T. S. Pisarenko, O. I. Kolokolova et A. Yu Selyutina. « Study of mammal helmin fauna – artiodactyls Kaluga region ». Veterinariya, Zootekhniya i Biotekhnologiya 1, no 8 (2021) : 85–89. http://dx.doi.org/10.36871/vet.zoo.bio.202108010.
Texte intégralRésumé :
The purpose of the study is to determine the range of helminths living on the territory of the Kaluga region, which can be dangerous for wild and domestic artiodactyls. Wild artiodactyls are not under constant surveillance, so they are a potential source of invasion of livestock. The article considers several methods of coprological study of the feces of bison, cattle and small cattle. As a result of the research, a parasite Strongyloides papillosus, was found and its type was determined, recommendations were given for the treatment of sick animals and the prevention of healthy livestock.