Results 21 to 30 of about 2,355,714 (247)

Comparison Between Trophic Positions in the Barents Sea Estimated From Stable Isotope Data and a Mass Balance Model

open access: yesFrontiers in Marine Science, 2022
The trophic position concept is central in system ecology, and in this study, trophic position (TP) estimates from stable-isotopes and an Ecopath mass-balance food web model for the Barents Sea were compared. Two alternative models for estimating TP from
Torstein Pedersen
doaj   +1 more source

Trophic coherence determines food-web stability [PDF]

open access: yes, 2014
Why are large, complex ecosystems stable? Both theory and simulations of current models predict the onset of instability with growing size and complexity, so for decades it has been conjectured that ecosystems must have some unidentified structural ...
Johnson, Samuel   +6 more
core   +1 more source

Do trophic subsidies affect the outcome of introductions of a non-native freshwater fish? [PDF]

open access: yes, 2013
Understanding how environmental variables and human disturbances influence the outcomes of introductions of non-native freshwater fish is integral to their risk management. This can be complex in freshwater ecosystems that receive subsidies that increase
Allen, R.   +7 more
core   +1 more source

Improvements of Population Fitness and Trophic Status of a Benthic Predatory Fish Following a Trawling Ban

open access: yesFrontiers in Marine Science, 2021
Trawl fisheries have been shown to cause overfishing and destruction of benthic habitats in the seabed. To mitigate these impacts, a trawling ban has been enforced in Hong Kong waters since December 31, 2012 to rehabilitate the ecosystem and enhance ...
Lily S. R. Tao   +8 more
doaj   +1 more source

Determining trophic niche width: a novel approach using stable isotope analysis [PDF]

open access: yes, 2004
1. Although conceptually robust, it has proven difficult to find practical measures of niche width that are simple to obtain, yet provide an adequate descriptor of the ecological position of the population examined. 2.
Bearhop, S.   +8 more
core   +1 more source

Not all jellyfish are equal: isotopic evidence for inter- and intraspecific variation in jellyfish trophic ecology [PDF]

open access: yesPeerJ, 2015
Jellyfish are highly topical within studies of pelagic food-webs and there is a growing realisation that their role is more complex than once thought.
Nicholas E.C. Fleming   +3 more
doaj   +2 more sources

Coupling low and high trophic levels models: Towards a pathways-orientated approach for end-to-end models [PDF]

open access: yes, 2009
Existing models of marine ecosystems address specific issues related to the bottom-up forcing of production or to the top-down effects of fishing on a limited range of the trophic spectrum.
Maury, Olivier   +3 more
core   +1 more source

Trophic Plasticity of the Highly Invasive Topmouth Gudgeon (Pseudorasbora parva) Inferred From Stable Isotope Analysis

open access: yesFrontiers in Ecology and Evolution, 2020
A wide trophic niche and high trophic plasticity are often invoked to explain the successful establishment of many aquatic invaders, but there is little information regarding the diet of most invasive fish in European waters.
Matteo Rolla   +2 more
doaj   +1 more source

Trophic ecology of largehead hairtail Trichiurus japonicus in the South Sea of Korea revealed by stable isotope and stomach content analyses

open access: yesFrontiers in Marine Science, 2022
Largehead hairtail (Trichiurus japonicus) is one of the most commercially important fishes in the western North Pacific. To identify the dietary changes across ontogeny and seasons, we investigated its stomach contents and stable isotope signatures (δ13C
Donghoon Shin   +6 more
doaj   +1 more source

Trophic interactions of meso- and macrozooplankton and fish in the Iceland Sea as evaluated by fatty acid and stable isotope analysis [PDF]

open access: yes, 2012
A trophic study was carried out in August of 2007 and 2008 on the pelagic ecosystem in the Subarctic Iceland Sea. Carbon and nitrogen stable isotopes and fatty acid biomarkers were used to study trophic linkages and the trophic ecology of the most ...
Falk Petersen, Stig   +3 more
core   +1 more source

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