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Artykuły w czasopismach na temat "Habitats"
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Habel, Jan Christian, i Frank E. Zachos. "Habitat fragmentation versus fragmented habitats". Biodiversity and Conservation 21, nr 11 (19.08.2012): 2987–90. http://dx.doi.org/10.1007/s10531-012-0349-4.
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PROOROCU, Marian, i Cristina Maria AVRAM. "Evaluation of Anthropical Pressures on Community Interest Habitats and Species in Natura 2000 Cold Someș". Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Agriculture 77, nr 1 (24.05.2020): 7. http://dx.doi.org/10.15835/buasvmcn-agr:2019.0026.
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The list of habitats of community interest within the Natura 2000 site ROSCI0233, as provided in the Natura 2000 standard, comprises 8 habitats of community interest. Two important activities were carried out: identification and inventory of habitats and species and assessment of negative influences that could affect the natural distribution area, the structure and functions. The assessment of the conservation status has highlighted the existence of significant anthropogenic pressures on some habitats (deforestation, land use change), which led to their unfavorable conservation status (habitat 9410, habitat 91D0*, habitat 91E0*, habitat 9110, habitat 9130).
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Park, Yonghwan, Chang-Jun Kim, Moon-Bo Choi i Yuno Do. "A Comparative Study of Carabid Beetles in Green Spaces and Former Natural Habitats". Diversity 12, nr 12 (15.12.2020): 479. http://dx.doi.org/10.3390/d12120479.
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Urban expansion threatens ecosystems through direct habitat conversion. To secure urban biodiversity and enhance ecosystem services, a common focus of planning and growth management efforts is to establish green spaces. This study aimed to understand the formation process of newly created green spaces after urban development. We investigated the carabid beetle assemblages in its current habitat in a new city and in its former habitats for assessing the loss of species diversity by urban development and to identify the initial status of species assemblages in the current urban habitats, including green spaces. The diversity and composition of the carabid beetle assemblages significantly changed in the new city. The former habitat loss by urban development leaves large numbers of carabid species to dramatically decline. Carabid assemblages in current habitats may show a critical response to habitat loss, although former habitats were converted to green spaces. Some carabid species were only present in current habitats, including the green space from former habitats. In addition, the current habitat, including green spaces and other habitats, have similar carabid assemblages. Our results indicated that the loss of former habitat has a much greater effect on species diversity persistence than changes in habitat configuration and the creation of green spaces. Consequently, most carabid beetles were already lost during development. Urban habitats in new cities, including green spaces, represent simple and homogeneous habitats, although the development was designed and planned to enhance biodiversity. The present design and planning practice for green spaces that destroyed all former habitats to prepare the ground of urban areas and thereby created urban habitats, including green space, may need to be changed to secure biodiversity. Designing and planning the green spaces should consider the species’ former habitats, for instance, creating a similar type of green space to agricultural land, forest, and wetland, and thereby the former habitat remains intact to enhance biodiversity and function.
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Seitz, Rochelle D. "Value of coastal habitats for exploited species: introduction to a theme set of articles". ICES Journal of Marine Science 71, nr 3 (marzec 2014): 636–37. http://dx.doi.org/10.1093/icesjms/fst180.
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Abstract Many exploited fish and invertebrate species use coastal habitats during one or more life-history stages as spawning, feeding, and nursery areas; yet, the value of these habitats has not been adequately characterized. As habitat availability can be a bottleneck for many populations, concerns about habitat effects on exploited species have been increasing. We have compiled nine articles presenting the state of knowledge and future research priorities regarding the importance of habitat for exploited species. Reviews from European habitats and several geographical locations throughout the United States demonstrate the influence of coastal habitats on survival, growth, and movement, especially during the early life-history stages, in a wide variety of species, spatial scales, and habitats. Moreover, many of these species contribute substantially to commercial landings, highlighting the importance of coastal habitats to population persistence and fishery yields. Management of fishery species can also be enhanced through modelling efforts incorporating habitat. Finally, there is a need for more effort in quantifying population demographics rates, creating comprehensive habitat maps, and developing better census techniques for complex hard bottom habitats; thus, future work is needed on the value of coastal habitats for exploited species.
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Jiang, Xuewei, Fei Chen, Jingjing Yang, Zhengli Zhou, Lu Han i Ruiheng Lyu. "Decomposition of Foliar Litter from Dominant Plants of Desert Riparian Forests in Extremely Arid Regions". Forests 15, nr 6 (30.05.2024): 949. http://dx.doi.org/10.3390/f15060949.
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Litter decomposition is important for understanding the effects of habitat on nutrient cycling. In this study, we investigated the decomposition characteristics, decomposition variability, and regulatory factors restricting the decomposition rates of leaf litter in three different habitats: a flood disturbance habitat, an arid habitat, and a high-salinity habitat. The litter decomposition rates of the habitats decreased in the following order: flood disturbance habit > arid habitat > high-salinity habitat. The organic carbon, total nitrogen, and lignin residues of the litter during the decomposition period were highest in the high-salinity habitat. The litter quality was the main regulator of the release of phosphorus and cellulose residues, which exhibited different release processes and patterns in these three habitats. The litter decomposition coefficient was negatively correlated with litter carbon residue in the flood disturbance habitats, the lignocellulose index in the arid habitats, and soil urease in the high-salinity habitats. It was positively correlated with the lignocellulose index in flood disturbance habitats and litter carbon residue in high-salinity habitats. The litter quality in the flood disturbance area played a significant role in litter decomposition, while environmental quality and litter quality were the dominant factors under arid and high-salt conditions. Litter quality in the flood disturbance area played a significant role in litter decomposition, while both environmental quality and litter quality were the dominant factors under arid and salt conditions.
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Orlov, O., V. Konishchuk i V. Martynenko. "The role of European rare habitats in conservation of rare phytodiversity of «Drevlianskyi» Nature Reserve". Agroecological journal, nr 1 (6.04.2021): 31–41. http://dx.doi.org/10.33730/2077-4893.1.2021.227237.
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Classification scheme of rare habitats of Europe according to Bern Convention and Habitat Directive of EU was presented for the territory of Drevlianskyi nature reserve. It was shown significant habitat’s diversity of nature reserve from all main types of habitats — water (permanent and temporary lakes (waterbodies), watercources, reedbeds habitats), bog (eutrophic and mesotrophic mires), grassland (dry, mesic and wet grassland, floodplain and fen scrub, heaths), forest (leaved and conifer forests (woodland), rock (rocks and talus of silicate rocks). According to the results of field research, the territory of the reserve represented by 30 habitats (1 — ІІ leaves, 4 — ІІІ leaves, 25 — ІV leaves). It is established that the most common habitat 91T0 (Central European lichen Scots pine forests), which represented by 153 localities in A1C (dry pine forest) on an area of 421.5 ha. It was made a conclusion that the role of rare habitats in nature reserve Drevlianskyi is determinant for conservation of rare species of vascular plants that are protected by the Bern Convention, European Red List and included to the Red Book of Ukraine. The results of the analysis of the role of rare biotopes of Europe in the conservation of species of flora of different protection status on the territory of Drevlianskyi nature reserve show that most of the rare plant species of reserve listed in Resolution № 6 of the Bern Convention (Annex I), revised in 2011, are present in its rare settlements. The role of rare habitats of Drevlianskyi nature reserve in the conservation of rare species of flora is decisive — of the 29 species of plants of supranational and national levels of protection in rare habitats there are 24 species or 82.8% of their total number.
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Hamilton, Ian M., i Lawrence M. Dill. "Monopolization of food by zebrafish (Danio rerio) increases in risky habitats". Canadian Journal of Zoology 80, nr 12 (1.12.2002): 2164–69. http://dx.doi.org/10.1139/z02-199.
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Dominant zebrafish (Danio rerio) previously have been shown to reduce their monopolization of food when foraging in structurally complex habitats compared with open habitats. Complex habitats may be more difficult to defend but may also be safer. To decouple these effects, we compared aggression and monopolization of food in groups of zebrafish foraging in an open habitat and one with overhead cover, as well as in an open habitat and a complex (vegetated) habitat. Covered and open habitats should have been equally defendable. In our experiments, fish used covered habitats more than open ones, suggesting that the perceived risk of predation was lower in covered habitats. There was no difference in use of vegetated and open habitats, suggesting that these habitats, which should differ in defendability, did not differ in safety. We found that the degree of food monopolization (expressed in the coefficient of variation within groups) at risky feeders was significantly greater in open habitats than in covered, but not vegetated, habitats. We did not find a difference in aggression between habitats. These results indicate that resource monopolization in groups of zebrafish is greater in risky habitats and support the hypothesis that the lower monopolization of food in complex habitats could result from greater safety in those habitats rather than, or in addition to, the reduction in defendability.
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Qian, Tianlu, Yao Chi, Changbai Xi, Zhongqiu Li i Jiechen Wang. "Changes in the Historical and Current Habitat Ranges of Rare Wild Mammals in China: A Case Study of Six Taxa of Small- to Large-Sized Mammals". Sustainability 12, nr 7 (31.03.2020): 2744. http://dx.doi.org/10.3390/su12072744.
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Through history, the habitats of wild mammals have changed greatly in China. Habitat changes may reflect changes in the environment and human–wildlife conflicts. This study focused on how the habitat changed for six taxa of rare wild mammals (one family, one genus, and four species) in mainland China. Their historical and current habitats were estimated according to their historical and current presence occurrences and three sets of environmental data (climate data, topography data, and human activity data), using the Maximum Entropy Model. Then, spatial statistical methods were used to analyze the changes in their habitats, and how human activities have influenced changes in their habitat. The results suggest that the habitats of all six taxa of mammals have shrunk considerably, compared to their historical ranges. With regards to current or past habitats, on average, 68.3% of habitats have been lost. The Asian elephant, which is facing the most serious habitat losses, has lost 93.1% of its habitat. By investigating the relationship between the changes in habitats and the anthropogenic impacts for each taxa, human activities have an obvious negative influence on mammal habitats. The sensitivity of habitats to human activities varies among different mammals: the tiger, Asian elephant, Bactrian camel, and snub-nosed monkey are more sensitive to human activities than musk deer and Chinese water deer.
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Perzanowska, Joanna, Joanna Korzeniak i Damian Chmura. "Alien species as a potential threat for Natura 2000 habitats: a national survey". PeerJ 7 (11.11.2019): e8032. http://dx.doi.org/10.7717/peerj.8032.
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Invasion by alien species (AS) is one of the most serious threats to ecosystems. In Europe, the Natura 2000 habitats network was established to protect habitats vital for the conservation of biodiversity and function of ecosystems. Therefore, the appearance of AS in Natura 2000 habitats is a warning signal that the most valuable European habitats may be endangered. However, quantitative studies encompassing a wide spectrum of habitats are lacking, and there is no insight into the differences in the level of invasion among habitats. Our survey is based on the State Monitoring of Natura 2000 data and aimed at an assessment of the level of invasion in natural habitat types in Poland. The percentage of invaded locations, number and frequency of alien plant species was assessed in 79 Natura 2000 habitats, both terrestrial and water, investigated on 5,941 locations. The most invaded habitats (with the highest percentage of invaded plots) were dunes with Hippophaë rhamnoides (habitat code 2160), rivers with muddy banks (habitat code 3270), and alpine rivers and herbaceous and ligneous vegetation along their banks (habitat codes: 3220, 3230, 3240). Grassland, forest and most of the bog, mire and fen habitats and also some habitats on a rock were invaded by a relatively large number of AS, but their frequency was comparatively low. In contrast, a high frequency of AS was found in the majority of dune and costal habitats and calaminarian grasslands. Compared with the period 2000–2010, the number of AS in some riparian, grassland and forest habitats rose noticeably. The occurrence of AS showed a negative correlation with conservation status of the habitats. This study has demonstrated that standard monitoring of Natura 2000 habitats provides the basis for the detection of AS, including invasive ones, in all types of habitats, and can be used for development rapid and effective response programs.
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Schulte-Hostedde, Albrecht I., i Ronald J. Brooks. "An experimental test of habitat selection by rodents of Algonquin Park". Canadian Journal of Zoology 75, nr 12 (1.12.1997): 1989–93. http://dx.doi.org/10.1139/z97-831.
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Using an enclosure experiment, we tested whether substrate selection by deer mice (Peromyscus maniculatus), redback voles (Clethrionomys gapperi), and woodland jumping mice (Napaeozapus insignis) matched habitat-use patterns determined from trapping data. Mice were introduced into a 5 m diameter enclosure containing substrates from three habitats: maple, mixed, and coniferous forest. Trapping data were taken from a long-term monitoring study of small-mammal populations in Algonquin Park, Ontario. We used data from 1991 – 1995 from the three habitats used in the enclosure experiment. If competition or predation affects habitat distribution patterns, then, given a choice, mice should select different substrates in the enclosures from those they use in the field. Alternatively, if habitat use is not constrained by interactions with competitors or predators (i.e., if small mammals select habitats), then habitats used in the enclosure should match habitat distributions observed in the field. Habitats used in the field did not match habitats selected in the enclosure experiment for either deer mice or woodland jumping mice. Redback voles selected habitats similar to those used in the field. We conclude that interspecific competition and (or) predation may limit availability of habitats for deer mice and woodland jumping mice.
Rozprawy doktorskie na temat "Habitats"
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Zauderer, Jeffrey. "Riparian Habitats of the Southeast Sierrita Mountains: Vanished Perennial Habitats". Arizona-Nevada Academy of Science, 1989. http://hdl.handle.net/10150/296427.
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From the Proceedings of the 1989 Meetings of the Arizona Section - American Water Resources Association and the Hydrology Section - Arizona-Nevada Academy of Science - April 15, 1989, University of Nevada, Las Vegas, Nevada
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Butucariu, Diana. "Habits and Habitats : Crafting Through a Prism of Culture Shock". Thesis, Konstfack, Keramik & Glas, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-4691.
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This is a text about a work of art, “The Room”, and about the process that brought it about. The process includes experiments in clay bodies, mixing different elements with the base clay in search of a material both suitable to work with in terms of texture and color, but also rich in less tangible qualities, as I mix in elements which carry a set of values of cultural identity. The text follows the path towards development of the final piece during the two-year course of the master program at Konstfack. During these two years, external factors such as dealing with the issues of culture shock, and searching for a place to live, interfere with my way of thinking, leading to unexpected turns in the direction of my artistic process. Searching for an apartment finds me standing in strangers' apartments as they sell their homes, their ways of life and their house rules. These sometimes awkward meetings provide a good starting point in my research of people's habits and habitats. In trying to understand some elements of Swedish culture, I become aware of the fact of my own culture and start thinking about it from an outside perspective. Eventually, the central question of the essay crystallizes: Who will carry on the traditional craft techniques of my home country? Romania is the rare place in Europe where crafts are still being practiced as they have been for hundreds of years, in the villages by crafts persons leading traditional lives. As the villages are emptied of young people, moving into cities, and as Romania as a whole is drained of a large part of its young and ambitious generation, moving to other European countries for jobs and education, a trend that I am of course part of, the traditions that I have taken for granted, growing up with my grandmother in a traditional village, become threatened. The answer to the question is a simple as it is demanding: I have to be part of the future of Romanian crafts. To document them, understand them, and incorporate them in my art. For this purpose, I undertake an investigative research trip. The text presents my findings about the crafts, and about the people working to document and preserve the traditions. The research trip is also presented in the movie “Six days in Romania”, which I include as an appendix to the essay. Over the course of two years, several short-term art projects have been completed within the master program. They are presented in the form of an interview with myself. Looking back at these projects, they become explained as necessary steps in preparation for the final piece, a viewpoint very different from the utter confusion that was the dominating feeling of at least the first year of the course. The interview tries to give insight into the non-linear process that is the creative work. Finally, in a poetic description of the final piece, I let my art speak for itself in a very literal way. In giving voice to the piece, I try to access truths hidden even to myself, in an effort to be as transparent as possible about the value of my efforts.
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Stevens, Tim, i n/a. "Mapping Benthic Habitats for Representation in Marine Protected Areas". Griffith University. School of Environmental and Applied Science, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040303.124815.
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Virtually all marine conservation planning and management models in place or proposed have in common the need for improved scientific rigour in identifying and characterising the marine habitats encompassed. An emerging central theme in the last few years has been the concept of representativeness, or representative systems of Marine Protected Areas (MPAs). The habitat classification and mapping needed to incorporate considerations of representativeness into MPA planning must logically be carried out at the same scale at which management occurs. Management of highly protected areas occurs almost exclusively at local scales or finer, independent of the reservation model or philosophy employed. Moreton Bay, on Australias east coast, was selected for studies at the local scale to map and classify macrobenthic habitats. In a site scale (1 km) trial for the major habitat classification study, remote underwater videography was used to map and characterise an unusual assemblage of epibenthic invertebrates on soft sediments. The assemblage included congregations of the comatulid crinoid Zygometra cf. Z. microdiscus (Bell) at densities up to 0.88 individuals.m-2, comparable to those found in coral reef habitats. There was no correlation between the distribution of this species and commonly used abiotic surrogates depth (6 18 m), sediment composition and residual current. This site scale trial is the first quantitative assessment of crinoid density and distribution in shallow water soft-sediment environments. The high densities found are significant in terms of the generally accepted picture of shallow-water crinoids as essentially reefal fauna. The findings highlight the conservation benefits of an inclusive approach to marine habitat survey and mapping. Assemblages such as the one described, although they may be of scientific and ecological significance, would have been overlooked by common approaches to marine conservation planning which emphasise highly productive or aesthetically appealing habitats. Most habitat mapping studies rely solely or in part on abiotic surrogates for patterns of biodiversity. The utility of abiotic variables in predicting biological distributions at the local scale (10 km) was tested. Habitat classifications of the same set of 41 sites based on 6 abiotic variables and abundances of 89 taxa and bioturbation indicators were compared using correlation, regression and ordination analyses. The concepts of false homogeneity and false heterogeneity were defined to describe types of errors associated with using abiotic surrogates to construct habitat maps. The best prediction by abiotic surrogates explained less than 30% of the pattern of biological similarity. Errors of false homogeneity were between 20 and 62%, depending on the methods of estimation. Predictive capability of abiotic surrogates at the taxon level was poor, with only 6% of taxon / surrogate correlations significant. These results have implications for the widespread use of abiotic surrogates in marine habitat mapping to plan for, or assess, representation in Marine Protected Areas. Abiotic factors did not discriminate sufficiently between different soft bottom communities to be a reliable basis for mapping. Habitat mapping for the design of Marine Protected Areas is critically affected by the scale of the source information. The relationship between biological similarity of macrobenthos and the distance between sites was investigated at both site and local scales, and for separate biotic groups. There was a significant negative correlation between similarity and distance, in that sites further apart were less similar than sites close together. The relationship, although significant, was quite weak at the site scale. Rank correlograms showed that similarity was high at scales of 10 km or less, and declined markedly with increasing distance. There was evidence of patchiness in the distributions of some biotic groups, especially seagrass and anthozoans, at scales less than 16 km. In other biotic groups there was an essentially monotonic decline in similarity with distance. The spatial agglomeration approach to habitat mapping was valid in the study area. Site spacing of less than 10 km was necessary to capture important components of biological similarity. Site spacing of less than 2.5 km did not appear to be warranted. Macrobenthic habitat types were classified and mapped at 78 sites spaced 5 km apart. The area mapped was about 2,400 km2 and extended from estuarine shallow subtidal waters to offshore areas to the 50 m isobath. Nine habitat types were recognised, with only one on hard substrate. The habitat mapping characterised several habitat types not previously described in the area and located deepwater algal and soft coral reefs not previously reported. Seagrass beds were encountered in several locations where their occurrence was either unknown or had not previously been quantified. The representation of the derived habitat types within an existing marine protected area was assessed. Only two habitat types were represented in highly protected zones, with less than 3% of each included The study represents the most spatially comprehensive survey of epibenthos undertaken in Moreton Bay, with over 40,000 m2 surveyed. Derived habitat maps provide a robust basis for inclusion of representative examples of all habitat types in marine protected area planning in and adjacent to Moreton Bay. The utility of video data to conduct a low-cost habitat survey over a comparatively large area was also demonstrated. The method used has potentially wide application for the survey and design of marine protected areas.
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Stevens, Tim. "Mapping Benthic Habitats for Representation in Marine Protected Areas". Thesis, Griffith University, 2004. http://hdl.handle.net/10072/367557.
Pełny tekst źródłaStreszczenie:
Virtually all marine conservation planning and management models in place or proposed have in common the need for improved scientific rigour in identifying and characterising the marine habitats encompassed. An emerging central theme in the last few years has been the concept of representativeness, or representative systems of Marine Protected Areas (MPAs). The habitat classification and mapping needed to incorporate considerations of representativeness into MPA planning must logically be carried out at the same scale at which management occurs. Management of highly protected areas occurs almost exclusively at local scales or finer, independent of the reservation model or philosophy employed. Moreton Bay, on Australia’s east coast, was selected for studies at the local scale to map and classify macrobenthic habitats. In a site scale (1 km) trial for the major habitat classification study, remote underwater videography was used to map and characterise an unusual assemblage of epibenthic invertebrates on soft sediments. The assemblage included congregations of the comatulid crinoid Zygometra cf. Z. microdiscus (Bell) at densities up to 0.88 individuals.m-2, comparable to those found in coral reef habitats. There was no correlation between the distribution of this species and commonly used abiotic surrogates depth (6 – 18 m), sediment composition and residual current. This site scale trial is the first quantitative assessment of crinoid density and distribution in shallow water soft-sediment environments. The high densities found are significant in terms of the generally accepted picture of shallow-water crinoids as essentially reefal fauna. The findings highlight the conservation benefits of an inclusive approach to marine habitat survey and mapping. Assemblages such as the one described, although they may be of scientific and ecological significance, would have been overlooked by common approaches to marine conservation planning which emphasise highly productive or aesthetically appealing habitats. Most habitat mapping studies rely solely or in part on abiotic surrogates for patterns of biodiversity. The utility of abiotic variables in predicting biological distributions at the local scale (10 km) was tested. Habitat classifications of the same set of 41 sites based on 6 abiotic variables and abundances of 89 taxa and bioturbation indicators were compared using correlation, regression and ordination analyses. The concepts of false homogeneity and false heterogeneity were defined to describe types of errors associated with using abiotic surrogates to construct habitat maps. The best prediction by abiotic surrogates explained less than 30% of the pattern of biological similarity. Errors of false homogeneity were between 20 and 62%, depending on the methods of estimation. Predictive capability of abiotic surrogates at the taxon level was poor, with only 6% of taxon / surrogate correlations significant. These results have implications for the widespread use of abiotic surrogates in marine habitat mapping to plan for, or assess, representation in Marine Protected Areas. Abiotic factors did not discriminate sufficiently between different soft bottom communities to be a reliable basis for mapping. Habitat mapping for the design of Marine Protected Areas is critically affected by the scale of the source information. The relationship between biological similarity of macrobenthos and the distance between sites was investigated at both site and local scales, and for separate biotic groups. There was a significant negative correlation between similarity and distance, in that sites further apart were less similar than sites close together. The relationship, although significant, was quite weak at the site scale. Rank correlograms showed that similarity was high at scales of 10 km or less, and declined markedly with increasing distance. There was evidence of patchiness in the distributions of some biotic groups, especially seagrass and anthozoans, at scales less than 16 km. In other biotic groups there was an essentially monotonic decline in similarity with distance. The spatial agglomeration approach to habitat mapping was valid in the study area. Site spacing of less than 10 km was necessary to capture important components of biological similarity. Site spacing of less than 2.5 km did not appear to be warranted. Macrobenthic habitat types were classified and mapped at 78 sites spaced 5 km apart. The area mapped was about 2,400 km2 and extended from estuarine shallow subtidal waters to offshore areas to the 50 m isobath. Nine habitat types were recognised, with only one on hard substrate. The habitat mapping characterised several habitat types not previously described in the area and located deepwater algal and soft coral reefs not previously reported. Seagrass beds were encountered in several locations where their occurrence was either unknown or had not previously been quantified. The representation of the derived habitat types within an existing marine protected area was assessed. Only two habitat types were represented in highly protected zones, with less than 3% of each included The study represents the most spatially comprehensive survey of epibenthos undertaken in Moreton Bay, with over 40,000 m2 surveyed. Derived habitat maps provide a robust basis for inclusion of representative examples of all habitat types in marine protected area planning in and adjacent to Moreton Bay. The utility of video data to conduct a low-cost habitat survey over a comparatively large area was also demonstrated. The method used has potentially wide application for the survey and design of marine protected areas.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Environmental and Applied Science
Full Text
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Catton, Robert Bruce. "Winter use and habitat selection of moose in openings and adjacent upland forested habitats". Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31919.
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Two designs were developed to model and compare the effects of scale on resource utilization by
moose in a managed lodgepole pine (Pinus contorta) forest. Statistical models, based on
population and individual design levels (using microsite and moderate polygon habitat scales,
respectively), were used to 1) test the hypotheses that moose track presence was increased i) in
openings of increasing shrub cover, ii) in forests adjacent to openings of increasing shrub cover,
2) model moose utilization of forest cover, based on distance-from-nearest-opening, to determine
appropriate leave strip widths adjacent to openings used by moose, 3) further understanding of
how different opening and forest cover types influence moose presence and utilization and 4)
compare these results from the different designs. Moose track occurrence and habitat attributes
were recorded on 55 snow track transects to model moose presence as a function of distance-from-
opening-edge and variation in vegetation cover. Over 15,000 UTM relocations were
obtained from 15 GPS collared cow moose over two winters, in the same area. Based on track
transect data, the model containing bog birch (Betula glandulosa), Salix species and mean shrub
height was the best predictor of moose presence. Resource utilization functions indicated natural
and forest management openings, up to 40 years old, were utilised more than older forest
habitats. Modeling at both scales confirmed the use of early seral openings (natural or
harvested) and indicated that forested distance-from-an-opening-edge does not influence resource
utilization or presence of moose. Track presence was greater in wetlands with average shrub
cover between 6 - 20% and > 20% than within adjacent forest cover but there was no difference
between wetlands with shrub cover < 6% and adjacent forest cover. Tracks were more numerous
in forest cover adjacent to wetlands with shrub cover > 20% than in forest cover adjacent to wetlands with shrub cover < 6% and 6 - 20%. The study implies that leave strips may have little
immediate effect on the use of early seral openings by moose in winter although, this does not
rule out that climate, predation or hunting pressure will influence habitat selection in the future.Forestry, Faculty of
Graduate
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Clark, Ezra. "Microthermal habitats in British rivers". Thesis, University of Exeter, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267237.
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Goldhahn, Eila. "Shared habitats : the MoverWitness paradigm". Thesis, University of Plymouth, 2007. http://hdl.handle.net/10026.1/2335.
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This practice-led research thesis analyses and visualises central components of Authentic Movement, with particular reference to the work of Dr Janet Adler. By contextualising and comparing this improvisation method with modern, post-modern and contemporary movement practices the author describes the emergence of Authentic Movement and distinguishes it from other practices. A new and original viewpoint is adopted and the practice's aesthetic, visual and empathetic characteristics are explored in relationship to and through visual art. The author, a learned Authentic Movement practitioner, critiques, deconstructs and reframes the practice from a visual arts- and performance-based, phenomenological perspective renaming it 'the MoverWitness exchange'. Embedded aspects and skills of the MoverWitness exchange, usually only accessible to firsthand practitioners of the method, are made explicit through research processes of analysis, application and visualisation. Hereby the practice's unique capacity to contain and express binary embodied experiences and concepts is exposed. Resulting insights are crystallised in a distinctive understanding of the MoverWitness exchange that emphasises its suitability as a new learning and/or research methodology for inter- and cross-disciplinary application. Search terms: Arts based research, arts psychotherapy, arts and science, authenticity, authentic movement, binaries, blindness, body, collective body, dance, dance and movement psychotherapy, embodiment, empathy, gastrula, improvisation, interdisciplinary research, mover, MoverWitness exchange, object relation theory, observation, paradigm, performance, phenomenology, sculpture, unconscious choreography, visual art, witness. Janet Adler, James Benning, Trisha Brown, Edgar Degas, Alexander Jawlensky, Tino Sehgal.
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Hodgson, Jenny. "Butterfly metapopulations in dynamic habitats". Thesis, University of York, 2007. http://etheses.whiterose.ac.uk/14200/.
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Many species require habitats that are naturally patchily-distributed and ephemeral, but human activities fundamentally alter the rate and scale of habitat change. This thesis describes the development of a new metapopulation simulation model applicable to a broad range of species that depend on dynamic habitat. I apply the model to two' case studies, both involving butterfly species that use early-successional habitats and that are UK BiodiversIty Action Plan priority species. I describe. two methods for parameterising the model for a particular metapopulation in a particular landscape. One method uses parallel disturbance ar:d population presence data for a few consecutive years; the other derives population parameters and landscape parameters from separate data sources. In the first case study, I found that the BAP target for Heath Fritillary (Melitaea athalia) populations in the Blean Woods, Kent, could either be met by approximately doubling the coppicing effort, or by concentrating the existing effort into one of the larger woodland blocks. In the second case study, I found that the rate of heathland burning in the South Stack area of Angl~seywas not enough by itself to sustain the metapopulation of Silver-studded Blues (Plebejus argus). However, the metapopulation is probably saved from extinction by the existence of permanently-suitable habitat close to the coast. I have also elucidated an important phenomenon in metapopulations with dynamic habitat: the relationship between patch occupancy and patch connectivity can be obscured by the temporal changes in habitat. This has important implications for the debate about whether many real populations actually fit the metapopulation paradigm because the existence of metapopulation dynamics is often determined by testing the connectivity-occupancy relationship. The simulation model, 'MANAGE', is an important new tool for integrating landscape-scale information, and answering conservation questions, in a field which is relatively new and unexplored.
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Bryce, Casey Catherine. "Microbial stress in rock habitats". Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/15776.
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Micro-organisms are the most abundant and diverse form of life on Earth. Their ability to tolerate stress has enabled them to colonise many inhospitable environments. Microbial processes alter the chemistry of the environment which has left a lasting mark on the geological record. On the other hand, microbial life is heavily influenced by environmental conditions. Indeed, the history of the Earth is shaped by the co-evolution of microbial and geological processes. This thesis explores how micro-organisms are influenced by their environment, with particular reference to microbial rock habitats. Rock habitats are an interesting system to understand the inter-relationship between microbial life and it's environment as they are relatively simple and very common. Rock-dwelling communities are also exposed to numerous stresses such as surface UV exposure, desiccation, temperature fluctuations, low nutrient availability or toxicity from elements leached from the rocks themselves. Three specific aspects of microbial stress in rock environments are investigated here: 1) The use of rocks as a shield from surface UV radiation stress, 2) The microbial response to chemical changes during water-rock interactions, 3) The effect of simultaneous limitation of more than one nutrient. The first uses exposure facilities aboard the International Space Station to provide empirical evidence that colonisation of the early land masses by phototrophs was not inhibited by high surface UV radiation. The latter studies use quantitative proteomics to investigate the cellular response of a heterotrophic bacterium to nutrient deficiency and element leaching, two common stresses in rock habitats. Together these results further our understanding of the relationship between micro-organisms and rocks, both today and over geological time.
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Ferretti, Stefano <1976>. "Innovative technologies for Space habitats". Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2008. http://amsdottorato.unibo.it/958/1/Tesi_Ferretti_Stefano.pdf.
Pełny tekst źródłaKsiążki na temat "Habitats"
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Poland) Habitaty 2006 (2006 Wrocław. Habitaty bezpieczne: Safe habitats. Wrocław: Oficyna Wydawnicza Politechniki Wrocławskiej, 2007.
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Zbigniew, Bać, i Politechnika Wrocławska Wydział Architektury, red. Habitaty bezpieczne =: Safe habitats : Habitaty 2006. Wrocław: Oficyna Wydawnicza Politechniki Wrocławskiej, 2007.
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Habitaty 2009 (2009 Wrocław, Poland). Habitaty proekologiczne =: Proecological habitats : habitaty 2009. Wrocław: Oficyna Wydawnicza Politechniki Wrocławskiej, 2010.
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Pipe, Jim. Habitats. North Mankato, Minn: Stargazer Books, 2005.
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Tony, Hare, red. Habitats. New York: Macmillan, 1994.
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Ellen, Moore Jo, red. Habitats. Monterey, CA: Evan-Moor, 1998.
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Riley, Peter D. Habitats. London: Franklin Watts, 2015.
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Hoe, Susan. Habitats. Pleasantville, N.Y: Gareth Stevens Pub., 2009.
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Hickman, Pamela M. Habitats. Toronto: Kids Can Press, 1993.
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Hickman, Pamela. Habitats. Toronto: Kids Can Press, 1993.
Znajdź pełny tekst źródłaCzęści książek na temat "Habitats"
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Gioria, Margherita. "Habitats". W Ecology, Systematics, and the Natural History of Predaceous Diving Beetles (Coleoptera: Dytiscidae), 307–62. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-9109-0_7.
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Woo, Kyung Sik, Young Kwan Sohn, Ung San Ahn, Seok Hoon Yoon i Andy Spate. "Habitats". W Jeju Island Geopark - A Volcanic Wonder of Korea, 7–8. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-20564-4_3.
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Reist, James D. "Habitats". W Marine Fishes of Arctic Canada, redaktorzy Brian W. Coad i James D. Reist, 41–52. Toronto: University of Toronto Press, 2017. http://dx.doi.org/10.3138/9781442667297-008.
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Schultheis, Franz, Stephan Egger i Charlotte Hüser. "Haus und Dorf – Innenleben und Außenleben des Habitats". W Habitat und Habitus, 125–61. Wiesbaden: Springer Fachmedien Wiesbaden, 2023. http://dx.doi.org/10.1007/978-3-658-38370-1_3.
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Damm, Ursula. "Shared Habitats". W Shared Habitats, 170–81. Bielefeld, Germany: transcript Verlag, 2021. http://dx.doi.org/10.14361/9783839456477-013.
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Esteban, Genoveva F., i Tom M. Fenchel. "Marine Habitats". W Ecology of Protozoa, 107–31. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59979-9_9.
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New, Tim R. "Major Habitats". W Insect conservation and Australia’s Inland Waters, 9–18. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-57008-8_2.
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Slingsby, David, i Ceridwen Cook. "Seashore Habitats". W Practical Ecology, 171–90. London: Macmillan Education UK, 1986. http://dx.doi.org/10.1007/978-1-349-08226-1_10.
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James, Philip, i Ian Douglas. "Urban habitats". W Urban Ecology, 185–207. Wyd. 2. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003295297-12.
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"11. A Man and His Miscellany". W Habitats, 67–71. New York University Press, 2020. http://dx.doi.org/10.18574/nyu/9780814771556.003.0015.
Pełny tekst źródłaStreszczenia konferencji na temat "Habitats"
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Chamberlain, John A., i Rebecca B. Chamberlain. "ARCHANODON CATSKILLENSIS: HABITS, HABITATS, AND HISTORY". W 53rd Annual GSA Northeastern Section Meeting - 2018. Geological Society of America, 2018. http://dx.doi.org/10.1130/abs/2018ne-310397.
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Beinarovica, Karina, i Inga Straupe. "BROAD-LEAF FOREST HABITAT SUITABILITY FOR WOODPECKERS AND EVALUATION OF ECOSYSTEM SERVICES, LATVIA". W 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/3.1/s14.38.
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It is well known that woodpeckers and their distribution is mostly affected by deadwood. However, in Latvia there have not been any studies about how other forest structural components like growing trees and vegetation can affect distribution of woodpeckers and their choice of habitats. In recent years estimation of ecosystem services has become popular in Latvia and it is used in nature conservation matters. The aim of the research was to analyse structures characterizing the habitats of broadleaf forests and identify for which woodpecker species broad-leaf forests are suitable habitat. An assessment of ecosystem services has also been applied to determine value of woodpeckers and their habitats. The amount of dead wood in the habitat is on average 71.2 m3 ha-1, of which majority or 87% is made by logs, while the smaller par tor 13% - by snags. It is possible to determine suitability of the habitat for various woodpecker species by analysing different structures that characterizes habitats � they are suitable for almost all species of woodpeckers. The study also shows that residents of Jelgava municipality would be willing to pay 11.00 EUR a year from a person to protect woodpecker species and to conserve their habitats.
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Chamberland, Dennis, i Scott Carpenter. "Ocean Habitats as Analogs for Space Habitats". W International Conference On Environmental Systems. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1996. http://dx.doi.org/10.4271/961397.
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Herkenrath, Maike, Till Fluschnik, Francesco Grothe i Leon Kellerhals. "Placing Green Bridges Optimally, with Habitats Inducing Cycles". W Thirty-First International Joint Conference on Artificial Intelligence {IJCAI-22}. California: International Joint Conferences on Artificial Intelligence Organization, 2022. http://dx.doi.org/10.24963/ijcai.2022/531.
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Choosing the placement of wildlife crossings (i.e., green bridges) to reconnect animal species' fragmented habitats is among the 17 goals towards sustainable development by the UN. We consider the following established model: Given a graph whose vertices represent the fragmented habitat areas and whose weighted edges represent possible green bridge locations, as well as the habitable vertex set for each species, find the cheapest set of edges such that each species' habitat is connected. We study this problem from a theoretical (algorithms and complexity) and an experimental perspective, while focusing on the case where habitats induce cycles. We prove that the NP-hardness persists in this case even if the graph structure is restricted. If the habitats additionally induce faces in plane graphs however, the problem becomes efficiently solvable. In our empirical evaluation we compare this algorithm as well as ILP formulations for more general variants and an approximation algorithm with another. Our evaluation underlines that each specialization is beneficial in terms of running time, whereas the approximation provides highly competitive solutions in practice.
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Trigg, Randall H., i Peggy M. Irish. "Hypertext habitats". W Proceeding of the ACM conference. New York, New York, USA: ACM Press, 1987. http://dx.doi.org/10.1145/317426.317435.
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Harrison, Ariane Lourie. "Architecture and Analogous Habitats". W AIA/ACSA Intersections Conference. ACSA Press, 2020. http://dx.doi.org/10.35483/acsa.aia.inter.20.5.
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Harrison Atelier proposes architecture for multiple species in projects that range from pavilion-scale agricultural infrastructure to speculations for new urban ecologies. Such built work represents the application of principles from architectural theories of the posthuman, namely a focus that seeks to integrate habitats for non-humans into architectural design concerns. The Pollinators Pavilion by architect Ariane Harrison, seeks a larger role for architecture in environmental activism and focuses on biodiversity conservation and materials exploration. Harrison Atelier uses artificial intelligence and automated scientific monitoring strategies to create and analyze habitat systems and increase building awareness.
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Jakubec, Pavel, Santiago Montoya-Molina, Jarin Qubaiova, Martin Novak i Martina Vetrovska. "BIOTOPE PREFERENCES OF OICEOPTOMA THORACICUM (COLEOPTERA: SILPHIDAE)". W 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/5.1/s20.011.
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Biotope or habitat preferences are important species characteristics that can be used for understanding their ecology, as well as their conservation, and even as a tool for crime investigations for detection of post-mortem body manipulation. However, the characterization of species� habitat preferences can be difficult. There are several limiting factors like lack of quantitative data and reliance on anecdotal evidence for this trait. Further, we must consider the reaction to the border between two neighboring habitats. These ecotones are important biodiversity hotspots in the landscape, which combine characteristics of both habitats, but some specialist species seem to avoid them. To characterize habitat preference of the potentially forensically important necrophagous beetle Oiceoptoma thoracicum (Linnaeus, 1758), we set up an experiment in the transition zone between the meadow and forest habitat. The individuals of O. thoracicum were collected using baited pitfall traps across two habitats and at ecotone. The traps were exposed for two weeks after which the samples were taken to the laboratory, where they were sorted and the specimens of O. thoracicum were sexed and counted. The obtained data were evaluated by a generalized linear model to establish the relationship between the presence and abundance of the focal species and distance from the ecotone. We found that the abundance of the species significantly changes along the forest-meadow gradient and shows a preference for woods. Its abundances at the ecotone and on meadows was low, showing a clear preference for forest habitats. This has important implications for the forensic use of the species, as it can be used to detect post-mortem body manipulation.
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Gagaev, Andrey, i Pavel Gagaev. "ENVIRONMENTAL JUSTICE IN THE SYSTEM OF JUSTICE". W Globalistics-2020: Global issues and the future of humankind. Interregional Social Organization for Assistance of Studying and Promotion the Scientific Heritage of N.D. Kondratieff / ISOASPSH of N.D. Kondratieff, 2020. http://dx.doi.org/10.46865/978-5-901640-33-3-2020-82-88.
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Environmental justice is a part of the system of natural, ethnic, geographic-ecological, restorative and international justice and a system of solutions in the field of global issues. Environmental justice includes compatibility, hatchability and sequence, equality, freedom, truth, responsibility of all forms of life on the planet and in space in their habitats, not claiming for the habitats of other living forms. Therefore, for example, the United States are their habitat only and nowhere else in the world, like any other nation, while the exit of ethnic groups beyond their habitats means aggression and violence. The article also presents the subject of environmental justice. It is the world economic systems. Environmental justice includes also procedural principles of fairness, maintaining natural evolution and self-organization of habitats in space and time; common property of mankind; teleology of alignment and perfection of races and ethnic groups, evolutionary diversity; maintaining the natural cyclicity of life forms; a system of non-violence and solutions to global issues.
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Smalley, Lucy-Ellen. "Lunar Brick Habitats". W 57th International Astronautical Congress. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.iac-06-e2.2.06.
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Mangone, Giancarlo. "Constructing urban habitats". W The 10th EAAE/ARCC International Conference. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.1201/9781315226255-98.
Pełny tekst źródłaRaporty organizacyjne na temat "Habitats"
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Holmes, Rachael, i Jonathan Wentworth. Restoration and creation of semi-natural habitats. Parliamentary Office of Science and Technology, październik 2022. http://dx.doi.org/10.58248/pb48.
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This POSTbrief describes approaches to and challenges of restoring different semi-natural habitat types in England including native woodlands, heathlands, grasslands, wetlands, and coastal habitats. This brief complements POSTnote 678, which focuses on terrestrial habitats and their restoration for the wider habitats target in England. Terrestrial habitats are usually described as including freshwater and coastal habitat types.
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Thompson, Sydney. Habitats. Portland State University Library, maj 1997. http://dx.doi.org/10.15760/etd.7282.
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Russ, Emily, Amy Yarnall i Safra Altman. Dredged material can benefit submerged aquatic vegetation (SAV) habitats. Engineer Research and Development Center (U.S.), sierpień 2023. http://dx.doi.org/10.21079/11681/47423.
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This technical note (TN) was developed by the US Army Engineer Research and Development Center–Environmental Laboratory (ERDC-EL) to provide an overview of the ecosystem services delivered by submerged aquatic vegetation (SAV) to estuarine and coastal ecosystems and to describe potential methods for the beneficial use of dredged material (BUDM) to aid in SAV restoration. Although dredging tends to have a negative association with SAV habitats, BUDM may provide an opportunity to expand suitable SAV habitat to areas where depth is the primary limiting factor. Recent in situ observations have shown that SAV has opportunistically colonized several dredged-material placement sites. This TN provides context on BUDM for SAV habitat restoration to encourage increased strategic placement.
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Dickerson, Dena D., Kevin J. Reine i Kim L. Herrman. Sensitive Turtle Habitats Potentially Impacted. Fort Belvoir, VA: Defense Technical Information Center, kwiecień 1999. http://dx.doi.org/10.21236/ada363549.
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Nikula, Blair, i Robert Cook. Status and distribution of Odonates at Cape Cod National Seashore. National Park Service, 2024. http://dx.doi.org/10.36967/2303254.
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Odonates are significant components of most wetland habitats and important indicators of their health. At Cape Cod National Seashore (CACO), we compiled odonate records dating back to the 1980s and, based partly on that data, identified 41 wetland sites for sampling, representing six freshwater habitats (kettle pond, inter-dune pond, dune slack, riparian marsh, vernal pool, and bog). We surveyed these sites for adult odonates during the 2016?2018 field seasons. Ten sites were surveyed all three years (total 19-20 surveys/site); all ten had at least some historical data. The remaining 31 sites were surveyed for one field season, a total of 6-8 times each. We conducted 391 surveys, recording 53,435 individuals and 74 species (45 dragonflies and 29 damselflies); not all individuals were identified to species. Abundance and species richness varied significantly between habitats. For all individuals recorded, abundance was greatest at vernal pools and kettle ponds. Riparian sites had the lowest abundance. Species richness was highest at kettle ponds, including several species of conservation concern, two listed as Threatened by the state of Massachusetts. Riparian marshes and dune slacks had relatively low richness. Among the 10 sites surveyed three years, we found significant annual variation in abundance and species richness. There was significant and generally greater between-site variation in abundance within a year than between years at sites. Community analysis found pond depth, habitat type, and presence of predaceous fish were significant factors explaining between-site variation in community composition. Habitats also differed significantly in community composition. Multidimensional scaling showed sites tend to cluster together by habitat type. Vernal ponds have the highest average community similarity to all other habitats (53.5%), with dune slack (52.9%), bog (52.0%) and inter-dune (51.5%) close behind. In contrast, riparian sites (46.3%) and kettle ponds (39.5%) are least similar to other habitats. Overall, 86 species of odonates have been recorded at CACO, a rich and diverse assemblage reflecting the variety and quality of freshwater habitats present. Although these habitats are relatively well-protected, stressors include climate change, nutrient inflow from adjacent development, road runoff, and trampling of emergent vegetation. A plan for monitoring is beyond the scope of this project. Ideally, it would be best to use the insight into odonate variation obtained from these surveys to develop a monitoring program designed to meet standards of statistical confidence and power currently employed in NPS monitoring programs.
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DeGraaf, Richard M., Mariko Yamasaki, William B. Leak i John W. Lanier. New England wildlife: management forested habitats. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experimental Station, 1992. http://dx.doi.org/10.2737/ne-gtr-144.
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DeGraaf, Richard M., Mariko Yamasaki, William B. Leak i John W. Lanier. New England wildlife: management forested habitats. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experimental Station, 1992. http://dx.doi.org/10.2737/ne-gtr-144.
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Meesters, Erik H., Isabelle van der Oudraa, Tony Wilkes, Michelle van Leijsen, Dolfi Debrot, Sander Mücher i Gülşah Doğruer. Benthic habitats of the Saba Bank. Den Helder: Wageningen Marine Research, 2024. http://dx.doi.org/10.18174/644676.
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Abbott, Katherine, Allison H. Roy i Keith Nislow. Restoring aquatic habitats through dam removal. U.S. Fish and Wildlife Service, listopad 2022. http://dx.doi.org/10.3996/css92498424.
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Gambill, Daniel, Matthew Stoklosa, Sean Matus, Heidi Howard i Garrett Feezor. White Sands Missile Range Thurgood Canyon watershed : analysis of Range Road 7 for development of best management practices and recommendations. Engineer Research and Development Center (U.S.), wrzesień 2022. http://dx.doi.org/10.21079/11681/45622.
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Thurgood Canyon, located on White Sands Missile Range (WSMR), contains an alluvial fan that is bisected by a primary installation road and is in the proximity of sensitive fish habitats. This project was initiated to determine if and how sensitive fish habitats at the base of the fan are impacted by the existing drainage infrastructure and to assess the condition and sustainability of the existing transportation infrastructure. Findings show that the current drainage infrastructure maintains flow energy and sediment carrying capacity further down the fan than would occur in its absence. However, frequent to moderately rare (small to medium) flood events dissipate over 2 km from sensitive habitat, and overland flow and sediment do not reach the base of the fan. Controlled flow diversion is recommended upstream of the road to mitigate infrastructure or habitat impacts during very rare (very large) flood events. A comprehensive operation and management approach is presented to achieve sustainable transportation infrastructure and reduce the likelihood of impacts to the sensitive habitat.