Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"trophic guild"”.
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Spring-fed streams in Virginia and assessment of livestock impacts
… Springs exhibited low species (3.3) and trophic guild (2.5) richness, and fish densities averaged 0.47 individuals/m². Two species, blacknose dace (Rhinichthys atratulus) and sculpins (Cottus sp.) dominated most sites. Spring size and location factors more effectively predicted fish …
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Behavioral Ecology, Taxonomy, and Conservation Genetics of the Bahama Oriole (Icterus northropi)
… Five of six islands have significantly different trophic guild structure now than they did prior to the arrival of humans, due to a combination of extinction events and introduced bird species. Very few extinct bird species have been replaced by equivalent ecological substitutes in the present day …
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Recursos alimentares de primatas da Mata Atlântica e um olhar sobre os maiores primatas deste bioma: mudanças climáticas, principais recursos de plantas e habitat
… 14% flowers. Each primate was classified in a trophic guild based on the consumption frequency of these items. A few plant species concentrated most records, mainly those from the Myrtaceae and Fabaceae families. Data are scarce and geographically limited, raising particular concerns for …
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Spatial and non-spatial patterns of genetic diversity in Neotropical bats
… family-level taxonomy, geographic range size, trophic guild membership, annual precipitation, and precipitation of the wettest month. The spatial analyses showed that the highest estimates of genetic diversity and phylogenetic diversity are found in the Mesoamerican forests and the Andes …
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Community Structure of Methane Cold Seeps in the Western Atlantic and Eastern Pacific
… fauna is examined in this study, with a focus on trophic guilds. Geospatial mapping indicated that non-seep-endemic taxa (those not hosting chemoautotrophic endosymbionts) either show positive association (e.g., squat lobsters, cake urchins), negative association (e.g., sea urchins, certain sea …
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Predation effects of benthivorous fish on stream food webs – a large scale and long term field experiment
… of a specific predator-prey pair rather than on trophic guild of the prey. To assess the predation effects on the life history of merolimnic insects and its consequences on fecundity the larval development and emergence of R. semicolorata was studied. It was possible to show lethal and sublethal …