Trophic Levels
The ecological module of BOATS-1.0: a bioenergetically constrained model of marine upper trophic levels suitable for studies of fisheries and ocean biogeochemistry
... mArine Trophic Size-spectrum (BOATS) model, which takes an Earth-system approach to modelling fish biomass at the global ...upper trophic levels, following empirical trophic efficiency ...
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Reef Fishes at All Trophic Levels Respond Positively to Effective Marine Protected Areas.
... some trophic groups more than ...lower trophic groups, in which case protection from fishing should result in suppression of lower trophic groups as predator populations ...major trophic ...
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Mercury distribution in different tissues and trophic levels of fish from a tropical reservoir, Brazil
... other trophic levels, indicating a biomagnification process in Vigário ...in trophic level, suggesting that this mercury species did not biomagnify through the food ...
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Evaluation of marine subareas of Europe using life history parameters and trophic levels of selected fish populations
... high trophic level species in subareas, such as the Baltic Sea (Ojaveer et ...low trophic level species negatively affects marine mammals, sea birds and commercially important fish species ( Smith et ...
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Heated relations: temperature-mediated shifts in consumption across trophic levels.
... In order to test our ideas on the effects of warming on carnivory and herbivory we use a specific well-studied model system, and formulate the following hypotheses: (1) Ectothermic herbivores and carnivores will show an ...
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Diversity of larvae of littoral Chironomidae (Diptera: Insecta) and their role as bioindicators in urban reservoirs of different trophic levels
... The Chironomidae (Diptera: Insecta) have a high species richness, with species adapted to live under widely different environmental conditions. The study of the taxonomic composition of chironomid larvae and the ...
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Evaluation of status of commercial fish stocks in European marine subareas using mean trophic levels of fish landings and spawning stock biomass
... Most of the fish stocks in the world, including European fish stocks, are threatened by overfishing and/or degraded environmental conditions. Although the Common Fisheries Policy (CFP) is the main policy instrument managing ...
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Microplastic and metal contamination in Bermuda fishes at different trophic levels
... high levels so it is possible that the fish is constantly removing Cd from its tissues using physiological processes but becomes more effective at this as they get larger in ...allow levels to decrease. ...
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Natural Diet of Callinectes ornatus Ordway, 1863 (Decapoda, Portunidae) in the Itapocoroy Inlet, Penha, SC, Brazil
... diversified trophic spectrum with a generalized feeding strategy and, therefore, a large niche, which was represented by its successful ingestion of animals of inferior trophic ...given trophic group ...
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Feeding diversity index as complementary information in the assessment of ecological quality status
... same trophic function, for example, they are all omnivorous or ...the trophic functioning of the system is reduced to only one or two levels, and the lower trophic levels are missing, ...
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Variações do fator de condição de quatro espécies de Characidae de lagos de várzea da Amazônia como função do tempo e da posição trófica: efeitos de uma seca anômala
... two trophic levels (omnivores and piscivores) from Amazonian floodplain lakes for three consecutive years: 2004, 2005 (an anomalous drought year), and ...
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Fatty acids as dietary tracers in integrated production of fish/oysters/macroalgae in earthen ponds
... different trophic levels under the principles of IMTA - Integrated Multi-Trophic Aquacult ure (Soto, ...le trophic or nutritional levels within the same or interrelated compartments ...
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Condition factor variations over time and trophic position among four species of Characidae from Amazonian floodplain lakes: effects of an anomalous drought
... two trophic levels (omnivores and piscivores) from Amazonian floodplain lakes for three consecutive years: 2004, 2005 (an anomalous drought year), and ...
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Scientific note Preliminary examination of food web structure of Nicola Lake (Taim Hydrological System, south Brazil) using dual C and N stable isotope analyses
... could be alternative carbon sources for some consumers. Nitrogen isotope ratios indicated approximately three consumer trophic levels. The pearl cichlid Geophagus brasiliensis was a primary consumer. Two ...
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Trophic level stability-inducing effects of predaceous early juvenile fish in an estuarine mesocosm study.
... of trophic cascades, various treatments using in situ mesocosms were established in a closed estuary to highlight the importance of predation in stabilizing estuarine plankton ...different trophic systems ...
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Mercury bioaccumulation in fish of commercial importance from different trophic categories in an Amazon floodplain lake
... higher trophic levels (Roulet et ...the levels of methylmercury (methylHg) associated with their roots are higher than those found in the water column and in the sediment (Guimarães et ...
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Synergism between elevated <i>p</i>CO<sub>2</sub> and temperature on the Antarctic sea ice diatom <i>Nitzschia lecointei</i>
... Sea ice plays an important role in carbon biogeochemistry, both in terms of physiochemical and biological processes. Algae, in particular diatoms, inhabiting the bottom part of sea ice and brine channels contribute ...
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Spatial variation in the stable isotopes of 13 C and 15 N and trophic position of Leporinus friderici (Characiformes, Anostomidae) in Corumbá Reservoir, Brazil
... 3.18; p > 0.05), values were greater downstream from the dam (Table I). In spite of differences were not sig- nificant, the species may be adopting specific trophic strategy for each environment. This is ...
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REPOSITORIO INSTITUCIONAL DA UFOP: Scaling relations in food webs.
... In summary, we studied the transportation properties of several networks that represent spanning trees of food webs. First, we analyzed and idealized a hierarchical model that can be solved analytically. Then we showed ...
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Trophic structure of macroinvertebrates in tropical pasture streams
... literature. Trophic groups were determined based on a similarity analysis using the Bray-Curtis similarity ...Five trophic groups were defined: fine-detritivores (feed mostly on fine particulate organic ...
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