Rozprawy doktorskie na temat „Faunal assemblages”
Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych
Sprawdź 49 najlepszych rozpraw doktorskich naukowych na temat „Faunal assemblages”.
Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.
Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.
Przeglądaj rozprawy doktorskie z różnych dziedzin i twórz odpowiednie bibliografie.
Marshall, Jonathan Coid, i n/a. "Factors Influencing the Composition of Faunal Assemblages in Rainforest Stream Pools". Griffith University. Australian School of Environmental Studies, 2001. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040218.150407.
Pełny tekst źródłaMarshall, Jonathan Coid. "Factors Influencing the Composition of Faunal Assemblages in Rainforest Stream Pools". Thesis, Griffith University, 2003. http://hdl.handle.net/10072/366983.
Pełny tekst źródłaThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Australian School of Environmental Studies
Full Text
Palmer, Denise D. "Late Holocene planktic foraminiferal assemblages from Orca Basin : effects of dissolution on faunal assemblages". [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001693.
Pełny tekst źródłaScott, K. "British bone caves : a taphonomic study of Devensian faunal assemblages". Thesis, University of Cambridge, 1986. https://www.repository.cam.ac.uk/handle/1810/273094.
Pełny tekst źródłaHambleton, Ellen. "A comparative study of faunal assemblages from British Iron Age sites". Thesis, Durham University, 1998. http://etheses.dur.ac.uk/4646/.
Pełny tekst źródłaTweedley, James. "Relationships between faunal assemblages and habitat types in Broke Inlet, Western Australia". Thesis, Tweedley, James ORCID: 0000-0002-2749-1060 (2010) Relationships between faunal assemblages and habitat types in Broke Inlet, Western Australia. PhD thesis, Murdoch University, 2010. https://researchrepository.murdoch.edu.au/id/eprint/9363/.
Pełny tekst źródłaStreet, Martin John. "Analysis of Late Palaeolithic and Mesolithic faunal assemblages in the northern Rhineland, Germany". Thesis, University of Birmingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.544001.
Pełny tekst źródłaClarkin, P. E. "The ecology of macroalgal rafts and their associated faunal assemblages in the northeast Atlantic". Thesis, Queen's University Belfast, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.557305.
Pełny tekst źródłaLui, Tak-hang, i 呂德恒. "Macrobenthic faunal assemblages of a traditional tidal shrimp pond at Mai Po Marshes Nature Reserve, Hong Kong". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B29775346.
Pełny tekst źródłaLui, Tak-hang. "Macrobenthic faunal assemblages of a traditional tidal shrimp pond at Mai Po Marshes Nature Reserve, Hong Kong /". Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20897455.
Pełny tekst źródłaNicholson, Rebecca Anne. "An investigation into variability within archaeologically recovered assemblages of faunal remains the influence of pre-depositional taphonomic processes /". Thesis, Online version, 1991. http://ethos.bl.uk/OrderDetails.do?did=1&uin=uk.bl.ethos.292504.
Pełny tekst źródłaRule, Beau Brenton. "Ediacaran biodiversity : palaeoecological assessment of successive latest Proterozoic (Neoproterozoic) faunal assemblages in the Western Flinders Ranges, South Australia /". Title page, contents and abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09SB/09sbr9352.pdf.
Pełny tekst źródłaSmith, G. M. "A contextual approach to the study of faunal assemblages from Lower and Middle Palaeolithic sites in the UK". Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/646235/.
Pełny tekst źródłaWEBBER, ANDREW JULIAN. "METHODOLOGICAL ADVANCES IN THE USE OF FAUNAL GRADIENT ANALYSIS FOR REGIONAL PALEOECOLOGICAL INVESTIGATIONS IN THE TYPE CINCINNATIAN SERIES (UPPER ORDOVICIAN)". University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1047068270.
Pełny tekst źródłaAlfaro, Lucas Joan Manel. "Influence of hydrothermal activity and substrata nature on faunal colonization processes in the deep sea". Thesis, Brest, 2019. http://www.theses.fr/2019BRES0089.
Pełny tekst źródłaFour decades after their discovery, we know now that deep-sea hydrothermal vents are widespread, diverse and dynamic, and interact with other chemosynthetic-based and background ecosystems. In the face of potential imminent anthropogenic impacts, more than ever the understanding of the processes that shape vent biodiversity, in its multiple facets, and the interactions with other systems is of paramount importance. The early processes driving community assembly and interactions between hydrothermally active habitats, vent periphery and cognate communities, namely wood falls, were investigated with an extensive colonizing experiment at 1700 m depth onthe Lucky Strike vent field (northern Mid-Atlantic Ridge). A modern multifaceted framework of community assembly based on species richness, functional traits and stable isotopes was applied. Results showed that vent ecosystems support higher functional richness that background peripheral habitats.The latter were highly heterogeneous and unique in species and functions suggesting that they may be especially vulnerable to impacts, such as deep-sea mining. The observed faunal overlap and energy links suggest that rather than being separate entities, active and peripheral habitats may be considered as interconnected. Environmental conditions and the presence of different resources at vent, periphery and wood habitats, were identified as main drivers of biodiversity patterns and community structure. The roleof woods in the deep-sea as potential stepping stones for meio- and macrofauna, not only for “vent” but for periphery inhabitants, is validated. The results of this thesis significantly improve our understanding of vent and chemosynthetic communities and may haveimplications for their protection from industrial activities
Cridland, Jennifer. "Late prehistoric Indian subsistence in northeastern Newfoundland : faunal analysis of Little Passage Complex assemblages from the Beaches and Inspector Island sites /". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ34174.pdf.
Pełny tekst źródłaTrevarthen, Susan Michelle. "Who Went to Market?: An Urban and Rural, Late Eighteenth-Century Perspective Based on Faunal Assemblages from Curles Neck Plantation and the Everard Site". W&M ScholarWorks, 1993. https://scholarworks.wm.edu/etd/1539625800.
Pełny tekst źródłaPiculjan, Leda. "Morphometric and taphonomic analysis of the upper pleistocene faunal assemblage from Hijenska Pecina, Croatia". Master's thesis, Instituto Politécnico de Tomar. Universidade de Trás-os-Montes e Alto Douro, 2012. http://hdl.handle.net/10400.26/6021.
Pełny tekst źródłaHijenska pećina, an Upper Pleistocene cave site, is located in the Plovunija quarry, north of Buje in Istria, Croatia. A detailed taxonomic, metric and taphonomic analysis of the faunal assemblage is presented in this work. Material consists of about 453 bones, bone fragments and teeth. A big portion of the remains belong to cave hyena (Crocuta crocuta spelaea) and the thesis will try to answer the question if Hijena cave was a hyena den or a natural trap as suggested in earlier works.
Pegg, Brian Peter. "The taphonomic history of the vertebrate faunal assemblage from British Camp, San Juan Islands, Washington". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ51445.pdf.
Pełny tekst źródłaCruaud, Perrine. "Influence des communautés microbiennes sédimentaires sur la répartition faunistique dans les sites hydrothermaux et les zones d'émissions de fluides froids du bassin de Guaymas". Thesis, Brest, 2014. http://www.theses.fr/2014BRES0059/document.
Pełny tekst źródłaWhereas the deep-sea environment is often considered to be a desert, hydrothermal vents andcold seeps provide “oases” of biological activity on the ocean floor. Vent and seep ecosystems support complex food webs based on microbial chemoautotrophic primary production. These hydrothermal vent and cold seeps ecosystems both release hydrocarbon- and sulfide-rich fluids,fueling various surface assemblages such as mat-forming giant bacteria or symbiont-bearinginvertebrates (e.g. bivalves, tubeworms). In the Guaymas Basin, the nearby presence at a few tens of kilometers of cold seeps and hydrothermal vents coupled with comparable sedimentary settings and depths offer a unique opportunity to assess and compare the microbial community composition of these ecosystems. Tobetter understand their overall functioning, we studied sedimentary microbial communities associated with cold seep and hydrothermal vent areas in the Guaymas Basin. The diversity of microbial communities inhabiting sediments was studied using high throughput sequencing (454pyrosequencing), combined with complementary approaches, such as FISH and quantitative PCR. This study reveals that sediments found in the Guaymas Basin were colonized by microbial communities typically found in these types of ecosystems. Our results revealed a high similarity between microbial communities composition associated with the cold seep and hydrothermal vent areas as a probable consequence of the sedimentary context. Nonetheless, thermophilic and hyperthermophilic lineages (e.g.: Thermodesulfobacteria, Desulfurococcales, etc) were exclusively identified in hydrothermally influenced sediments highlighting the strong influence of temperature gradients and other hydrothermally-related factors on microbial community composition. Furthermore, sediments populated by different surface assemblages show distinct porewater geochemistry features and are associated with distinct microbial communities. Indeed, in the sediments underlying microbial mats characterized by high methane porewater concentrations,microbial communities were dominated by anaerobic methane oxidizers (ANME), known to produce sulfide which provides high fluxes of sulfide to the seafloor. In contrast, sediment associated microbial communities underlying faunal assemblages were characterized by a lower biomass and lower methane porewater concentrations in sediments, limiting porewater sulfide concentrations. Without elevated and toxic sulfide concentrations, faunal assemblages can colonize the surface. Together, geochemical and microbial surveys indicate that porewater methane concentrations play an important role in the microbial community structure and subsequently in the establishment of the surface colonizers. Furthermore, presence and activity of the surface colonizers influence the underlying microbial communities probably because of modification of energy source availabilities. Finally, the existence of similar microbial populations between the two ecosystems also raises the question of their dispersal mechanisms. Our results support the hypothesis of a potential continuity among deep-sea ecosystems. In absence of physical borders, environmental conditions (temperature, specific compounds associated withhydrothermal fluids) might select specific and highly adapted microorganisms from the pool of microorganisms dispersed globally across the seafloor
Atzori, Clarissa. "Influence of port breakwaters on surrounding polychaete fauna". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Znajdź pełny tekst źródłaNakamura, Akihiro. "Development of Soil and Litter Arthropod Assemblages in Rainforest Restoration". Thesis, Griffith University, 2008. http://hdl.handle.net/10072/367553.
Pełny tekst źródłaThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Environment
Faculty of Science, Environment, Engineering and Technology
Full Text
Bito, Darren. "Structure and Dynamics of Herbivore Assemblages Along an Altitudinal Gradient: Indicators of Climate Change". Thesis, Griffith University, 2011. http://hdl.handle.net/10072/366400.
Pełny tekst źródłaThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Environment
Arts, Education and Law
Science, Environment, Engineering and Technology
Full Text
Burel, Thomas. "Effet de l'hydrodynamisme sur la structure des communautés macroalgales et sur les interactions macroflore / macrofaune en zone intertidale". Thesis, Brest, 2020. http://www.theses.fr/2020BRES0019.
Pełny tekst źródłaThis thesis aims at quantifying and explaining the effects of hydrodynamics on the communities of the North-East Atlantic rocky shores. In that prospect, several studies were carried out in 14 sites at the western head of Brittany, at different spatial scales, from a few metres to a hundred kilometres. Two biological sampling methods were used for macroflora and macrofauna to study variations in the structure of macroalgal communities and seaweed dominated assemblages. A new proxy for small-scale hydrodynamics has been developed, in situ wave height.In situ wave height appears to be the most important physical factor in the internal structuring of macroalgal communities. By studying the differentiation of six macroalgal communities vertically distributed on the shore, the role of hydrodynamics seems to be minor compared to the elevation and the average duration of emersion.The shift in intertidal dominance from macroflora to macrofauna is mainly explained by in situ wave height. Sessile organisms respond differently to hydrodynamics. Interestingly, the existence of tolerance thresholds for hydrodynamics was highlighted. Within the communities dominated by macroalgae, the in situ wave height significantly modulates both the fauna-flora interactions, strong at the top and middle of the shore, and the flora-flora interactions, more important at the bottom of the intertidal zone.Studying the effect of hydrodynamics on a midintertidal macroalgal community using seven proxies revealed different community responses. The wave heights measured in situ and calculated using theSWAN model appear to be complementary in assessing the role of hydrodynamics in the structuring of macroalgal-dominated rocky intertidal ecosystems
Moon, Mike. "Hydroacoustic Substrate Classification Accuracy and Faunal Assemblage Variation Between Artificial and Natural Rock Regions: Bear Lake, Utah/Idaho". DigitalCommons@USU, 2007. https://digitalcommons.usu.edu/etd/7682.
Pełny tekst źródłaPatterson, Molly O’Rourke. "FORAMINIFERA FAUNA RECOVERED FROM ANDRILL’S (ANtarctica geological DRILLing program) SOUTHERN MCMURDO SOUND (SMS) PROJECT". OpenSIUC, 2010. https://opensiuc.lib.siu.edu/theses/411.
Pełny tekst źródłaThorpe, Teresa Mary. "The shark faunal assemblage of North Carolina, USA and assessment of a gillnet modification intended to reduce shark bycatch". Thesis, University of London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.536785.
Pełny tekst źródłaKimball, Vaughn R. "Variability in late prehistoric prey-use strategies of the southeastern Columbia Plateau a test using the Harder Site faunal assemblage /". Online access for everyone, 2005. http://www.dissertations.wsu.edu/Thesis/Spring2005/v%5Fkimball%5F050505.pdf.
Pełny tekst źródłaAlves, Paula Rute Pereira Matono. "Fish assemblages as biological indicators of ecological quality in portuguese rivers". Doctoral thesis, Universidade de Évora, 2012. http://hdl.handle.net/10174/16172.
Pełny tekst źródłaGardner, Neville P. "Small-scale distribution of two modern land snail faunas : islands and boundaries of relevance to the interpretation of subfossil assemblages". Thesis, Cardiff University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315293.
Pełny tekst źródłaClague, Christopher Ian. "An investigation into the assemblage structure of the microchiropteran fauna of the Queensland tropical upland wet sclerophyll zone/". [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18310.pdf.
Pełny tekst źródłaManthi, Fredrick Kyalo. "The taphonomy of a micromammalian faunal assemblage from the Saldanha Bay Yacht Club : a contribution to the study of the South African west coast palaeoenvironments". Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/7710.
Pełny tekst źródłaThis thesis provides a broad outline of the effect of taphonomic and ecological processes on the accumulation and transformation of micromammalian faunal assemblages, and the importance of the signatures left behind by these processes in the reconstruction of ancient ecosystems. Micromammalian remains recovered from a rich Terminal Pleistocene site near the Saldanha Bay Yacht Club (SBYC) along the South African west coast have been examined following Andrews' (1990a) procedures. In the investigation of the effect of taphonomy on the SBYC faunal remains, murids (rodents) and soricids (shrews) have been examined separately and in as much detail as possible. The analyses have shown that the long bones of the soricids exhibit a relatively higher degree of completeness than those of the murids, suggesting preferential preservation of the former. Additionally, soricid jaws have yielded higher minimum number of individuals (MNIs) than long bone counts whereas for murids the opposite is the case. These observations have indicated the need for more taxonomically resolved analyses on the effect of taphonomic processes on micromammalian remains. Three micromammalian species represented in the SBYC faunal samples (Tatera afra, Myosorex varius and Suncus varilla) yielded much higher MNI counts than did other species. This reflects the intermediate selective behaviour of the inferred accumulator of the fauna, the barn owl, although the spotted eagle owl has not been completely ruled out. The study of the SBYC micromammalian fauna has underscored the need to integrate both taphonomic and ecological factors in the attempts to infer potential predators that might have been responsible for the accumulation of microanalytic occurrences. This is also necessary for understanding the environmental contexts in which the fauna was accumulated and/or derived. The micromammalian species represented at SBYC have suggested that in the SBYC area some 15,000 years ago, there was a mosaic of microhabitats including well-vegetated and moist microhabitats, and an admixture of bush and sandveld. Overall, climatic conditions in the SBYC area when the microfauna accumulated were moderate, and generally not different from the conditions prevailing today.
Kurchevski, Gregório [UNESP]. "As assembléias de peixes da represa de Jurumirim (alto rio Paranapanema, SP): status atual e mudanças históricas". Universidade Estadual Paulista (UNESP), 2012. http://hdl.handle.net/11449/99410.
Pełny tekst źródłaCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Diversos fatores são responsáveis pela estruturação das assembléias de peixes em ecossistemas aquáticos artificiais. As relações entre o ambiente e os padrões de abundância e composição são provenientes das escalas temporais e espaciais avaliadas. Nesse sentido, as construções de reservatórios modificam o ambiente de tal forma que ocorre uma reorganização das assembleias de peixes. Com esse enfoque, o presente estudo objetivou caracterizar a distribuição espaço-temporal da fauna de peixes do reservatório de Jurumirim, avaliar o status de conservação e as interferências da represa nos atributos dessas assembleias. Três compartimentos do reservatório foram amostrados (lótico, transição e lêntico), além de duas lagoas na região de desembocadura do rio Paranapanema na represa. Foram registrados 52 táxons, sendo 14 deles considerados novos registros para a área de influência do reservatório. Desses novos registros, quatro espécies são de origem não nativa (alóctone): Triphorteus nematurus, Hyphessobrycon eques, Metynnis maculatus, e Cichla monoculus e uma exótica: Tilapia rendalli. As análises dos atributos ecológicos demonstraram, mesmo que incipiente, existe influência das condições impostas pelo barramento nas estruturas das assembléias. Dos atributos analisado, apenas o comprimento padrão médios e riqueza de espécies apresentaram diferenças estatísticas entre os trechos e os meses estudados. O padrão de distribuição longitudinal de riqueza específica parece ser atribuído às características peculiares desse sistema: baixa frequência de espécies introduzidas, presença de importantes tributários e condição trófica. O reservatório de Jurumirim apresenta filtros ecológicos que promovem certa resistência à invasões biológicas. Ainda, pela idade...
Many factors are responsable for the structure of fish assemblages in artificial aquatic ecosystems. The relation between the environment and the patterns of abundance and composition come from temporal and spatial scales evaluated. Therefore, the constructions of reservoirs modify the environment leading to a reorganization of fish communities. The present study aimed to characterize the spatial-temporal distribution of fish fauna in Jurumirim Reservoir, determining the interferences of the dam in the fish community attributes, as well as evaluating the conservation status of fish assemblages in this artificial system. Three compartments of the reservoir were sampled (lotic, transition, lentic), as well as two lagoons in the mouth zone of Paranapanema River into the reservoir. 52 taxons were found, 14 of which considered new records. Of the new records, 4 species are alloctone species: Triphorteus nematurus, Hyphessobrycon eques, Metynnis maculatus and Cichla monoculus. The analysis of ecological attributes showed low influence of the conditions imposed by the dam in the fish assemblages. Only the average standard length and the species richness presented statistical differences between stretches and months. The pattern of longitudinal distribution of specific richness seems to happen due to the peculiar characteristics of that system: low frequency of introduced species, presence of the important tributaries and trophic condition. Jurumirim Reservoir presents ecological filters that promote some resistance to the progress of operational aspects of the invasions. Furthermore, because of reservoir’s age... (Complete abstract click electronic access below)
Frizzera, Gabriela Linhares. "Limnologia, distribuição e composição da fauna de Oligochaeta (Annelida: Clitellata) e larvas de Chironomidae (Diptera) do Lago dos Manacás, município de Juiz de Fora, MG". Universidade Federal de Juiz de Fora, 2011. https://repositorio.ufjf.br/jspui/handle/ufjf/2156.
Pełny tekst źródłaApproved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-07-22T15:21:36Z (GMT) No. of bitstreams: 1 gabrielalinharesfrizzera.pdf: 2367263 bytes, checksum: e04246423d57d883b86913ca2ec968e4 (MD5)
Made available in DSpace on 2016-07-22T15:21:36Z (GMT). No. of bitstreams: 1 gabrielalinharesfrizzera.pdf: 2367263 bytes, checksum: e04246423d57d883b86913ca2ec968e4 (MD5) Previous issue date: 2011-03-28
CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
O objetivo do presente estudo foi verificar a existência de variação espacial e temporal das variáveis abióticas e conhecer a estrutura da assembléia de Chironomidae e Oligochaeta do lago dos Manacás em meses que compõe o período seco e chuvoso e, a partir destas variáveis avaliar a qualidade da água deste ambiente. Foram realizadas três coletas, duas no período seco (agosto/09 e julho/10) e uma no chuvoso (fevereiro/10), em dois transectos, cada um com cinco pontos de coleta. As amostras de sedimento foram obtidas com draga do tipo Petersen em tréplicas, também foram obtidas amostras para a análise da granulometria e matéria orgânica. As amostras de água foram obtidas do fundo com uma garrafa de Van Dorn. Para analisar o estado trófico do ambiente foi calculado o índice de estado trófico (TSI) de Carlson e foi avaliada a presença e abundância de táxons indicadores de poluição. As variáveis limnológicas não apresentaram variações significativas entre os pontos de coleta e entre os transectos. Entretanto foram detectadas diferenças significativas entre as coletas realizadas, com exceção das variáveis oxigênio, carbono orgânico dissolvido e pH. A granulometria foi composta principalmente por sedimento fino e com alta porcentagem de matéria orgânica. A assembléia encontrada foi composta por 25 táxons e 1007 organismos. A maior riqueza e diversidade foi obtida na primeira coleta em agosto de 2009 e as menores densidade número de táxons foi encontrada no período chuvoso em fevereiro de 2010. Os quironomídeos foram os organismos mais abundantes em todo o período de coletas. Os pontos marginais (I e V) diferiram significativamente em relação à assembléia somente em um transecto na primeira coleta, nas demais, as margens foram consideradas iguais. Em agosto de 2009 pode ser observada uma grande quantidade de táxons adominantes. Neste período Caladomyia ortoni foi o principal táxon dominante. Em 2010 não foram observados táxons adominantes e Polypedilum foi dominante neste período. O índice calculado para determinar o estado trófico do lago dos Manacás classificou este ambiente como oligotrófico, mesotrófico e eutrófico ao longo do período de coletas. As variáveis abióticas diferiram temporalmente modificando as condições do ambiente e a estrutura da assembléia de Chironomidae e Oligochaeta. As concentrações de nutrientes aumentaram bastante demonstrando que o lago passa por um processo de alteração da qualidade da água. A baixa abundância de organismos encontrados no lago foi considerada comum, visto que também foi observado em outros locais. Apesar do índice de estado trófico mostrar que a qualidade da água do lago dos Manacás apresenta-se em más condições, a ausência e/ou a baixa densidade dos táxons considerados como indicadores de poluição não confirmam estes dados.
The aim of this study was to verify the existence of the spatial and temporal variation of abiotic variables and know the structure of Chironomidae and Oligochaeta assembléia of the Manacás lake in months that compound the dry and rainy period and from this variable to evaluate the water quality of the environment. Three collects have been done, two in dry season (august/09 and july/10) and one in the wet season (february/10) in two transects each with five sampling points., Sediment samples has been collected by a bottom sampler Petersen. Three replicates have been made in each sample point for analysis of macroinvertebrates. Sediment samples were also obtained for analysis of particle size and organic matter. Water samples were obtained from the bottom with a bottle of Van Dorn. To analyse of the environment trofic status was calculated the trofic status index (TSI) of the Carlson and the presence and abundance of the pollution indicators taxa. Limnological parameters showed no significant variations among the sampling sites and among transects. However significant differences were detected between samples collected, with the exception of oxygen, dissolved organic carbon and pH. The particle size was mainly composed of fine sediment with a high percentage of organic matter. The assembléia found was composed of 25 taxa and 1007 organisms. The higher richness and diversity was obtained in the first collection in August 2009 and the lower density and number of taxa was found to the rainy season. Chironomids were the most abundant organisms during all period of collection. The marginal points (I and V) differed significantly with respect the assemblage only in transect A in the first collection in the others, the margins were considered equal. In August 2009 could be seen a large number of taxa adominantes. During this period the main dominant taxa was Caladomyia ortoni. In 2010 adominantes taxa were not observed, and Polypedilum were dominant in this period. The index to determine the trophic status of Manacás Lake rated this environment as oligotrophic, mesotrophic and eutrophic during the period of collection. The abiotic variables varied temporally changing environmental conditions and structure of the assembléia of Chironomidae and Oligochaeta. The concentrations of nutrients increased significantly showing that the lake goes through a process of change in water quality. The low abundance of the organisms found in the lake was considered common, already observed on others places. Although the trofic status index to show the water quality of Manacás lake is in bad conditions the absence and/or the low density of taxa considered how pollution indicators do not confirm this data.
Stroppa, Gustavo Martins. "Composição da fauna de lagartos e anfisbenídeos (Squamata) em um fragmento de Mata Atlântica na Zona da Mata de Minas Gerais, Brasil". Universidade Federal de Juiz de Fora, 2012. https://repositorio.ufjf.br/jspui/handle/ufjf/1673.
Pełny tekst źródłaApproved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-07-02T12:59:41Z (GMT) No. of bitstreams: 1 gustavomartinsstroppa.pdf: 1222382 bytes, checksum: 4ef99b2b99f409674d64468fbebf599f (MD5)
Made available in DSpace on 2016-07-02T12:59:41Z (GMT). No. of bitstreams: 1 gustavomartinsstroppa.pdf: 1222382 bytes, checksum: 4ef99b2b99f409674d64468fbebf599f (MD5) Previous issue date: 2012-02-27
A ocupação das paisagens naturais por atividades humanas é uma das maiores ameaças à biodiversidade local. As consequências desta ocupação são a remoção dos habitats naturais e a formação de fragmentos isolados e menores que aquele original. Estudos sobre a composição e padrões de distribuição da fauna de lagartos e anfisbenídeos em ambientes de Mata Atlântica no estado de Minas Gerais são escassos. O presente trabalho teve como objetivo realizar um inventário faunístico de lagartos e anfisbenídeos na Fazenda Fortaleza de Sant’Anna, na Zona da Mata mineira, e fornecer informações a fim de ampliar o conhecimento da distribuição e composição da fauna de répteis Squamata do estado de Minas Gerais. A região onde o estudo foi realizado está inserida em uma das áreas prioritárias para a conservação da herpetofauna do Estado. As amostragens foram feitas no período entre fevereiro e dezembro de 2011, totalizando 28475 dias/balde e 56950 dias/funil. Foram instalados conjuntos de armadilhas de interceptação e queda, e armadilhas de funil em nove pontos do fragmento, três localizados na matriz no entorno da mata, três na borda da mata e três em áreas centrais do fragmento. Foram registrados 47 espécimes pertencentes a 12 espécies, distribuídas em 10 famílias: Amphisbaenidae, Anguidae, Diploglossidae, Gekkonidae, Gymnophthalmidae, Leiosauridae, Phyllodactylidae, Scincidae, Teiidae e Tropiduridae, sendo que o filodactilídeo Gymnodactylus darwinii foi a espécie mais abundante (n = 15) e a única encontrada em todas as áreas de amostragem com armadilhas. A espécie que se destacou dentre as menos abundantes foi Diploglossus fasciatus (n = 1), pois seus hábitos solitários e a baixa densidade em suas populações tornam seu registro mais raro. Entre as 12 espécies registradas, as exclusivas do ambiente “Matriz” foram Amphisbaena microcephala, Diploglossus fasciatus e Ophiodes striatus, no de “borda” foram Mabuya dorsivittata e Placosoma glabellum e na “Central” foi Heterodactylus imbricatus. Não houve diferença significativa na frequência de ocorrência entre as áreas de matriz, borda e centro do fragmento (t = 0,1955; p= 0,8989). A análise de variância mostrou que não houve diferença significativa no número de espécimes amostrados por cada área (t = 0,5937; p = 0,6717). A curva de acumulação de espécies dos pontos de coleta indicou que não houve estabilização no acréscimo de espécies de lagartos e anfisbenídeos para a região, indicando a necessidade de continuidade do trabalho.
The occupation of the natural landscape by human activities is the major threat to local biodiversity. Its consequences are the removal of natural habitats and formation of isolated fragments smaller than the original ones. Studies on composition and distribution patterns of the lizards and amphisbaenians in environments of the Atlantic Forest in Minas Gerais state are scarce. This study conducted an inventory of lizards and amphisbaenians fauna at Fortaleza de Sant'Anna farm in Zona da Mata of Minas Gerais, and provided information to expand knowledge of the distribution and composition of Squamata reptile fauna of the state of Minas general. The region of study is one of the priority areas for conservation of the herpetofauna in the state. The samples were taken in the period between February and December 2011, totaling 28475 days / bucket and 56950 days / funnel. Were installed sets of pitfall traps, funnel and drop in nine points of the fragment, three located in the matrix surrounding the forest, three in the forest edge and three in central areas of the fragment. We recorded 47 specimens belonging to 12 species were registered, distributed in 10 families: Amphisbaenidae, Anguidae, Diploglossidae, Gekkonidae, Gymnophthalmidae, Leiosauridae, Phyllodactylidae, Scincidae, Teiidae and Tropiduridae, and the filodactilídeo Gymnodactylus darwinii was the most abundant species (n = 15) and the only found in all of the sampling areas with traps. The species that stood out among the least abundant ones was Diploglossus fasciatus (n = 1), because their lonely habits and the low density in their populations turn his/her rarer registration. Among the 12 registered species, the exclusive of the "Matriz" atmosphere were Amphisbaena microcephala, Diploglossus fasciatus and Ophiodes striatus, in the one of "border" they were Mabuya dorsivittata and Placosoma glabellum and in the "Centro" it was Heterodactylus imbricatus. There was not significant difference in the occurrence frequency among the head office areas, it embroiders and center of the fragment (t = 0,1955; p = 08989). The variance analysis showed that there was not significant difference in the number of specimens for each area (t = 0,5937; p = 06717). The curve of accumulation of species of the collection points indicated that there was not stabilization in the increment of species of lizards and anfisbenídeos for the area, indicating the need of continuity of the work.
Johnson, Zane B. "Submerged wood inhabiting macoinvertebrates of the Elm Fork of the Trinity River, Texas: Assemblage analyses, comparisons to the benthic fauna, and a study of Cyrnellus fraternus (Trichoptera: Polycentropodidae)". Thesis, University of North Texas, 2001. https://digital.library.unt.edu/ark:/67531/metadc2843/.
Pełny tekst źródłaAbgrall, Corentin. "Réponse de la flore, de la faune du sol et de leur substrat à l'introduction d'espèces exotiques envahissantes végétales". Thesis, Normandie, 2019. http://www.theses.fr/2019NORMR056/document.
Pełny tekst źródłaInvasive alien plants are species introduced and naturalized outside of their native distribution range and which have the capacity to maintain and expand their population. Some of these species are considered to be ecosystem transformers by altering their structure, functioning as well as resident animal and plant communities. These induced alterations make some of these species undesirable through their ecological and economical impacts. The work presented in this thesis aimed at a better understanding of the impact of biological invasions by alien plants. The soil fauna, native vegetation and their substrate, as well as ecosystem functioning, were studied at different spatial scales. Two exotic alien species, invasive in Europe, were considered as biological models for this work: the black locust (Robinia pseudoacacia) and the Japanese knotweed (Reynoutria japonica). Firstly, a global meta-analysis demonstrated the positive impact that plant invasions can exert on the abundance of some groups within the soil fauna, notably primary consumers, within different types of habitats (open or closed). Then, a large-scale study on the black locust revealed the differences that can can occur in the response of forest ecosystems to invasions along a latitudinal gradient. Study sites along this gradient, distributed amog four distinct regions in western Europe, exhibit differences in climate and dominant native vegetation which can alter the impact of the black locust. A detailed study on black locust impact in Normandy demonstrated the impact of R. pseudoacacia on native plant and soil fauna communities, as well as some ecosystem functions, in comparison to two native tree species. Finally, a laboraty experiment demonstrated the impact that allelopathic compounds extracted from Japanese knotweed rhizomes can have on some organisms within the soil fauna. This study showed that some invasive alient plants can influence the soil fauna, and soil food webs, through their secondary metabolism. This thesis illustrates that simultaneous study of both aboveground and belowground ecosystem compartments at different spatial scales is of interest in the context of biological invasions
(9810980), Richard Knight. "Structure of faunal assemblages on rehabilitated land". Thesis, 2002. https://figshare.com/articles/thesis/Structure_of_faunal_assemblages_on_rehabilitated_land/13424549.
Pełny tekst źródłaGiguere, Thomas. "Characterization of hydrothermal vent faunal assemblages in the Mariana Back-Arc Spreading Centre". Thesis, 2020. http://hdl.handle.net/1828/11712.
Pełny tekst źródłaGraduate
2021-04-17
Steffen, Martina Lianne. "Early Holocene hearth features and burnt faunal assemblages at the Richardson Island Archaeological Site, Haida Gwaii, British Columbia". Thesis, 2006. http://hdl.handle.net/1828/1891.
Pełny tekst źródłaWillerton, Ila Moana. "Subsistence at Si•čǝ’nǝł: the Willows Beach site and the culture history of southeastern Vancouver Island". Thesis, 2009. http://hdl.handle.net/1828/1723.
Pełny tekst źródłaBountalis, Alexandra Clare. "Cave usage and the implications of multiple taphonomic agents on a faunal assemblage". Thesis, 2013. http://hdl.handle.net/10539/12363.
Pełny tekst źródłaThompson, Andrea. "A zooarchaeological analysis of a late Dorset faunal assemblage from the KcFs-2 site (Nunavik, Quebec)". Thèse, 2011. http://hdl.handle.net/1866/5144.
Pełny tekst źródłaThis thesis presents a zooarchaeological analysis of a faunal assemblage from a Dorset site (KcFs-2) on the Nuvuk Islands in the Canadian Arctic. The faunal data was analyzed through the application of bone density and economic utility indices and bivariate statistical tests. A brief taphonomic study was also undertaken, showing that the assemblage was not heavily affected taphonomically. The faunal analysis revealed a generalized subsistence strategy with an intensified focus on marine mammal exploitation, specifically ringed seals. The predominance of immature ringed seals exposed through the study indicates an abundance of marine resources in the northern Hudson Bay and Hudson Strait regions during the period under study, which correlates well with existing studies concerning Late Palaeoeskimo economy. Occupation of the KcFs-2 site occurred in the Late Dorset period of Nunavik (1500-800 B.P.) and is defined on a multi-seasonal level, from late winter through summer. Analyses of the organic artefact assemblage (harpoon heads and sculpted objects) served to confirm the relative dating of the site and aided in the definition of the cultural affiliation of the inhabitants of the KcFs-2 site.
YEN, WAN-TING, i 言婉婷. "Marine Paleo-Primary Production Variability Estimated by Planktic Foraminifer Fauna Assemblages in the Tropical Pacific". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/89614486567159914841.
Pełny tekst źródła國立臺灣海洋大學
應用地球科學研究所
99
Marine primary production variability plays an essential role in modulating global carbon cycle that is a key component in regional/global climate changes. Estimating late Quaternary primary production by the uses of faunal-based transfer functions with modern satellite primary production data derived from chlorophyll a concentration has been successfully applied for the northern Indian Ocean and equatorial Pacific. However, few studies have been conducted for the western Pacific warm pool. Here we attempt to establish a paleo-productivity transfer function for estimating paleo-primary production in the tropical Indian and Pacific. We have compiled western Pacific and Indian coretop fauna data from the MARGO project (Multiproxy Approach for the Reconstruction of the Glacial Ocean Surface) and calibrated the fauna data by SeaWiFS data of chlorophyll a concentrations (1998-2007) for each coretop. In order to understand the sensitivities and accuracies of different methods for primary production estimates, we applied Imbrie-Kipp transfer function (IKTF) and Modern Analogus Technique (MAT) with different species abundance data of planktic foraminifer assemblages, or with different geographic subsets of coretop data. Our results indicate that the transfer function using 28 species abundance data is obviously better than that of 11 species. However, using different inputs of geographic subsets of coretops shows minor, insignificant differences in the performance of transfer function estimates. Therefore we consider the geographic distribution of coretops is not important and the whole western Pacific and Indian coretop data for calibration would be an optimum choice. We applied this transfer function applied to a western Pacific warm pool core MD052928, and found primary productivity changes on glacial to interglacial time scales are controlled regional current and upwelling, which are in response to changes in sea-levels.
張詠斌. "Late Quaternary High-Resolution Planktonic Foraminifer Stable Isotope and Faunal Assemblage Record of the Southern Benguela Current". Thesis, 1998. http://ndltd.ncl.edu.tw/handle/20180528822389787630.
Pełny tekst źródłaMoura, Viviane Andrade Fernandes dos Santos. "Taphonomic approach to the faunal assemblage of the Lower Paleolithic site of Visogliano (MIS 13 and 10), trieste, Italy". Master's thesis, 2021. http://hdl.handle.net/10400.26/39300.
Pełny tekst źródłaAlghaled, Huda. "An Upper Ordovician faunal assemblage from the Neuville Formation of Québec, including an exceptionally preserved soft bodied sea anemone, Paleocerianthus neuvillii n. sp". Thèse, 2019. http://hdl.handle.net/1866/22740.
Pełny tekst źródłaPeck, Helene. "The application of ecological models and trophic analyses to archaeological marine fauna assemblages: towards improved understanding of prehistoric marine fisheries and ecosystems in tropical Australia". Thesis, 2016. https://researchonline.jcu.edu.au/48929/1/48929-peck-2016-thesis.pdf.
Pełny tekst źródłaSchäffler, Livia. "Determinants of population structure in the world's smallest primate, Microcebus berthae, across its global range in Menabe Central, Western Madagascar". Doctoral thesis, 2011. http://hdl.handle.net/11858/00-1735-0000-0006-B3B8-1.
Pełny tekst źródła