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Showing 1 to 16 of 16 for “"Feeding-guilds"”.
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Indirect Effects of Elevated Carbon Dioxide on Members of Three Herbivorous Feeding Guilds on Soybean, Glycine Max
P. japonica prefers damaged leaves grown under elevated CO2 over damaged leaves grown under ambient CO2, which may be the result of increased complexity in volatile compounds in leaves grown under elevated CO2. Increased amounts of flavonols and decreased amounts of isoflavonoids in leaves grown …
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Evaluation of native bee nesting rates and beetle community assemblages in the presence of clothianidin in the soil of natural areas
… contaminated and control sites; however, beetle feeding guild abundances and trophic interactions between feeding guilds were influenced by clothianidin contamination. These results suggest that neonicotinoid contamination of natural habitats can have a number of environmental consequences for …
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Anthropod Community Associated with the Webs of the Subsocial Spider Anelosimus Studiosus
… and B.barronopsis contained many different feeding guilds, including herbivores, omnivores, generalist predators, kleptoparasites, and aranievores.
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Effects of neonicotinoids and fungicides on soil invertebrate communities and litter decomposition within restored prairie
… 37 to 80% across all major taxonomic groups and feeding guilds. These declines were consistent across sampling dates and associated with distinct shifts in community composition and higher rates of litter decomposition. My findings demonstrate that combinations of common agricultural pesticides …
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Denitrification, Dissimilatory Nitrate Reduction, and Methanogenesis in the Gut of Earthworms (Oligochaeta): Assessment of Greenhouse Gases and Genetic Markers
… species of different families, sizes, and feeding guilds (i.e., burrow and feeding habits) from Brazil for the emission of nitrogenous gases and CH4. Taxa affiliated with these emissions, i.e., denitrifiers, DNR, and methanogens were analyzed with cloning and pyrosequencing of marker genes, …
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Nontarget Avian Use of DRC-1339 Treated Plots During An Experimental Blackbird Control Program in Eastern South Dakota
… 004). Nontarget birds were then separated by feeding guilds; granivorous birds were observed significantly more in treated plots (x2=159.1, 1 df, P<0.001). Pheasants were observed numerous times around the treated plots, but only twice in the treated plots. Activity comparisons showed more …
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Influence of living and non-living habitat complexity on arthropods in strip-tilled cabbage fields
… contained 1) fewer herbivores with chewing feeding guilds and more specialized diet breadths and, 2) greater abundance of active hunting natural enemies. In 2012, mulch species and mulch management practices were examined. Although mulching did not provide significant pest suppression, …
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Comparative Morphology of Sensilla Styloconica on the Proboscis of North American Nymphalidae and Other Selected Taxa: Systematic and Ecological Considerations.
… of eight variables tested between two distinct feeding guilds of North American Nymphalidae. Average number, density, extent of proboscis coverage with sensilla, their total length, and shoulder spine length were all significantly greater in the non-nectar feeding guild than in nectar feeders, …
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The Influence of the Clean Water Act and Tributaries on the Fish Community of the Big Sioux River, South Dakota
… lower river. Distributions of reproductive and feeding guilds were not different between years, however, some individual fish species distributions were different between years. Dissolved oxygen levels have increased and ammonia levels have decreased across years (1974-1994) at sites immediately …
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The Influence of Human Disturbance on Avian Frugivory and Seed Dispersal in a Neotropical Rainforest
… and a shift in the relative abundance of avian feeding guilds: insectivores and frugivores declined, while nectarivores and omnivores increased. Canopy cover declined with disturbance; along with plant abundance, this explained much of the variation in bird species composition. The rate of avian …
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The effect of supplementary nectar feeders on bird-plant mutualisms in the Cape Fynbos, South Africa
… Cape Peninsula, South Africa. I carried out a feeding experiment with a matched paired design to answer two main questions: (1) Do nectar feeders affect bird abundance and distribution ranges? If so, (2) do these affect their visitation rates to bird-pollinated plants? I conducted bird surveys …
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Assessment of bird diversity, feeding guild and avitourism potential in Pulau Tinggi Marine Park, Mersing, Johor, Malaysia.
… and relative abundance, (ii) to investigate the feeding guild of the birds in selected macrohabitat and (iii) to assess the potential of avitourism in Pulau Tinggi, Mersing, Johor. Three field methods were applied including mist-netting, direct observation, and camera trapping. Birding hotspots …
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Chironomidae Contributions to the Macroinvertebrate Assemblage, Index of Biotic Integrity and Relationships to Water Quality Impairment for Eastern South Dakota Streams
… and generic richness, five of seven functional feeding guilds and four of seven habit guilds represented by the total assemblage. Intolerant chironomid genera comprised 61% of total intolerant macroinvertebrates and tolerant chironomid genera comprised 41% of total tolerant macroinvertebrates. …
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Using stable isotopes to trace the movements of ducks in southern Africa
… overlaps in δ13C and δ15N across and within feeding guilds at each moulting site implying dietary overlaps during moulting. More overlaps occurred during the dry seasons (summer in Strandfontein and winter in Lake Chuali, Manyame catchment site, and Lake Ngami). Higher isotopic variances …
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Factors Shaping Macrofaunal Polychaete Communities in the Gulf of Mexico
… reached its peak near the Mississippi trough. Feeding guild diversity was also highest in the Mississippi trough. The environmental parameters that determine diversity and density of polychaete assemblages and species distribution ranges were examined. Depth, export flux of particulate organic …
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Feeding ecomorphology in angelfishes, f. Pomacanthidae: the implications of functional innovations on prey-dislodgement in biting reef fishes
… in functional research, while their ramsuction feeding counterparts have received considerable attention over the past few decades. This thesis therefore examines the functional basis of biting in coral reef fishes, with a focus on the marine angelfishes (f. Pomacanthidae), and other deep-bodied …