Trophic level
Assessing the Trophic Level of a Mediterranean Stream (Nif Stream, İzmir) Using Benthic Macro-Invertebrates and Environmental Variables
... The study was conducted in Nif Stream (İzmir) and the aims of the study are (a) to determine the benthic macro-invertebrate composition of the stream, (b) to determine environmental features of the stream, (c) to ...
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Feeding habits and trophic level of Himantura gerrardi (Elasmobranchii; Dasyatidae) in northern Oman Sea: effects of sex and size class
... and trophic level of Himantura gerrardi were studied according to sex and size classes of 80 individuals obtained using bottom trawl between May and December 2014 from the Oman ...classes. Trophic ...
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Exceptionally high δ15N values in collagen single amino acids confirm Neandertals as high-trophic level carnivores
... Concluding Remarks. Compound-specific isotope analyses are a very promising method for reconstructing aspects of past diets, especially by combining nitrogen and carbon isotope analyses on single amino acids to clearly ...
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Couplerlib : a metadata-driven library for the integration of multiple models of higher and lower trophic level marine systems with inexact functional group matching
... production level is constant from one year to the next although timing of spring bloom will vary from year to year in relation to temperature and ...higher trophic level species will depend on the ...
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Trophic level, food preference and feeding ecology of Rachycentron canadum (Linnaeus, 1766), in Hormuzgan Province waters (northern Persian Gulf and Oman Sea)
... lower trophic level when they are smaller and younger compared to when they are large and old (Pauly, 2010), indicating that can change with the size and age of fish (Pauly and Watson, ...
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The effect of trophic level on individual amino acid δ15N values in a terrestrial ruminant food web
... the trophic position of organisms within a food web: if the δ 15 N values of the primary producers at the base of the food web and of the consumer are known, then the trophic level can be calculated ...
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Trophic LEvel Activity.pdf
... the energy of the food is lost from as heat or used by the organism for cellular respiration — making energy for daily life. Only about 10% of the food eaten is used for growth and is therefore available as energy to the ...
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Trophic Level Influence on Stable Hydrogen Isotopic Composition of Bat Fur
... comparing them with Δ 2 H, which will determine if Δ 2 H also increases with trophic level. It is possible that some bats meet most of their metabolic needs for water with water from food. This is ...
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Comparative Assessment of the Trophic Level of the Sevastopol and Yuzhnaya Bays Using E-TRIX Index
... The advantage of E-TRIX over many other indexes with which it is also possible to assess the water quality is that the standard hydrochemical and hydrobiological monitoring data are used for calculation. This allows one ...
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The impact of floral resources and omnivory on a four trophic level food web
... fourth trophic level benefited from plant resources irrespective of prey availability, but the benefit to a true omnivore lacewing at the third trophic level occurred only at low prey ...
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Understanding patterns and processes in models of trophic cascades
... We examined top-down and bottom-up cascade effects in a marine food web model of intermediate complexity (Allen & Fulton 2010; Steele et al. 2013), which represents the fluxes of nutrient (nitrogen) through the North ...
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Quantifying the trophic linkages of Antarctic marine predators
... higher trophic level, energy rich prey (fish and squid) to their ...higher trophic level prey has important implications for dietary studies that use stomach samples from chick-provisioning ...
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Contaminant and Trophic Dynamics of Tropical Stream Ecosystems.
... Pollution in Puerto Rico streams is not severe, with only a few localized exceptions, and consequently, it was challenging to elucidate contaminant trophic dynamics. PCBs were detected most frequently of all the ...
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Local Dispersal and Coexistence in a Metacommunity Model with Trophic Structure
... single trophic level ...before trophic structure is ...that trophic structure in general depends on some degree of long-distance dispersal in order to ...
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Ecosystem regime shifts disrupt trophic structure
... how trophic structure of the reef fish community becomes increasingly dissimilar between alternative reef ecosystem states (regime-shifted vs recovering) with time since ...concave trophic structure, with ...
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Ecosystem regime shifts disrupt trophic structure
... Key words: coral reef fish; coral bleaching; functional group; habitat degradation; mesopredator; trophic level; trophic pyramid; coral reef ecology.. Regime shifts have been documented [r] ...
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Evaluating Mercury Dynamics and Trophic Transfer in Aquatic Ecosystems.
... In subsequent work following the development of our model we found that proximity to coal-fired power plants affected fish tissue Hg accumulation in unexpected ways (Sackett et al. 2010). Coal-fired power plants release ...
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Assessment Of Trophic Status In Bali Strait
... The nutrient content in Banyuwangi coastal environment mostly caused by human activities along the coastal area of Bali strait especially in Banyuwangi surrounding areas. The change of organic element content in waters ...
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TROPHIC STATE INDEXES AND PHYTOPLANKTON IN THE TROPHIC STATUS ASSESSMENT OF WATERS OF A SMALL RETENTION RESERVOIR AT AN EARLY STAGE OF OPERATION
... [e.g. Pawlik-Skowrońska and Toporowska 2011; Pęczuła and Suchora 2011]. This phenomenon, together with all its nagging/severe consequences (especially cyanobacteria blooms), is particularly acute if among assumed ...
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Trophic ecology of an abundant predator and its relationship with fisheries
... predators’ trophic ecology can be via competition for available resources (Lucifora et ...predators’ trophic ecology being influ- enced by fisheries ...shark trophic ecology (Olaso et ...
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