Results 21 to 30 of about 3,279,066 (304)

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

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 structure in a seabird host-parasite food web: insights from stable isotope analyses [PDF]

open access: yes, 2010
Ecological studies on food webs rarely include parasites, partly due to the complexity and dimensionality of host-parasite interaction networks. Multiple co-occurring parasites can show different feeding strategies and thus lead to complex and cryptic ...
Gómez-Díaz Elena   +3 more
core   +1 more source

Coexisting with the alien: Evidence for environmental control on trophic interactions between a native (Atherina boyeri) and a non-indigenous fish species (Gambusia holbrooki) in a Mediterranean coastal ecosystem

open access: yesFrontiers in Ecology and Evolution, 2022
Biological invasions are a widespread problem worldwide, as invasive non-indigenous species (NIS) may affect native populations through direct (e. g., predation) or indirect (e.g., competition) trophic interactions, leading to changes in the food web ...
Cristina Andolina   +11 more
doaj   +1 more source

Assessment Of Trophic Status In Bali Strait

open access: yesResearch Journal of Life Science, 2015
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 will directly affect plankton community structure and the aquatic trophic level.
Umi Zakiyah   +2 more
openaire   +3 more sources

Water quality assessment, trophic classification and water resources management [PDF]

open access: yes, 2010
Quantification of water quality (WQ) is an integral part of scientifically based water resources management. The main objective of this study was comparative analysis of two approaches applied for quantitative assessment of WQ: the trophic level index ...
Gal, Gideon   +4 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

Ecological status of urban ponds in Białystok, Poland

open access: yesLimnological Review, 2016
Stawy Dojlidzkie (The Dojlidy Ponds) are located in the north-eastern part of Poland, near the capital of the Podlasie province, in Białystok. The Dojlidy Ponds (DP) are a complex of more than 20 reservoirs arranged adjacent to one another in an area of ...
Jekatierynczuk-Rudczyk Elżbieta   +2 more
doaj   +1 more source

Knowledge mining for the differentiation pattern with respect to the productivity and trophic status of some selected lakes of Western Himalayas

open access: yesFrontiers in Environmental Science, 2023
The present study deals with an account of the primary productivity and trophic status of Rewalsar, Kuntbhyog, and Prashar lakes of Western Himalayas. Seasonal variations in gross primary productivity (GPP) (g C m–2 day–1), net primary productivity (NPP,
Rakesh Kumar   +10 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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