Results 1 to 10 of about 233,008 (296)

A Bayesian model for assessing organic matter supply in complex marine food webs using amino acid stable isotope analysis [PDF]

open access: yesPeerJ
While several software packages have been developed to solve stable isotope mixing models, none are currently equipped to trace the flow of organic matter through the lower trophic levels of planktonic food webs.
Connor H.H. Shea   +2 more
doaj   +3 more sources

Preliminary trophic network analysis of subalpine Lake Annecy (France) using an Ecopath model [PDF]

open access: yesKnowledge and Management of Aquatic Ecosystems, 2009
Lake Annecy is the second largest natural lake in France, with intensive commercial and recreational fisheries. However, there is limited knowledge of its trophic interaction. A preliminary Ecopath model was fitted to study the trophic interaction in the
D. Gerdeaux, M.Y. Janjua
doaj   +2 more sources

A Modelling Approach for the Management of Invasive Species at a High-Altitude Artificial Lake

open access: yesLimnological Review, 2023
The ecosystem structure of a Mediterranean high-altitude artificial lake (Aoos Springs, Northwest Greece) was assessed and quantified using the Ecopath with Ecosim model.
Dimitrios K. Moutopoulos   +6 more
doaj   +1 more source

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

Comparison of Trophic Niche Position, Size, and Overlap in an Assemblage of Pacific Rockfish (Genus Sebastes) for Testing Community Composition Models

open access: yesDiversity, 2022
Rockfish (genus Sebastes) assemblages can inform mechanisms of coexistence and maintenance of diversity in ecological communities. Coexistence theory characterizes ecological assemblages as following either a deterministic niche differentiation model, or
Andrew D. Suchomel, Mark C. Belk
doaj   +1 more source

Rethinking the lake trophic state index [PDF]

open access: yesPeerJ, 2019
Lake trophic state classifications provide information about the condition of lentic ecosystems and are indicative of both ecosystem services (e.g., clean water, recreational opportunities, and aesthetics) and disservices (e.g., cyanobacteria blooms ...
Farnaz Nojavan A.   +3 more
doaj   +2 more sources

Trophic state footprint index model and its application to Dianchi Lake, China

open access: yesEcological Indicators, 2021
Given ongoing changes in regional climate and hydrologic conditions, a vast of studies have reported that under-prediction or over-prediction of the trophic status of a water body was widely existing by classic trophic state index method, it would create
Qing Chen   +4 more
doaj   +1 more source

Trophic hierarchies illuminated via amino acid isotopic analysis. [PDF]

open access: yesPLoS ONE, 2013
Food web ecologists have long sought to characterize the trophic niches of animals using stable isotopic analysis. However, distilling trophic position from isotopic composition has been difficult, largely because of the variability associated with ...
Shawn A Steffan   +7 more
doaj   +1 more source

Connecting a Trophic Model and Local Ecological Knowledge to Improve Fisheries Management: The Case of Gulf of Nicoya, Costa Rica

open access: yesFrontiers in Marine Science, 2019
Trophic models of the Ecopath with Ecosim (EwE) type and local ecological knowledge (LEK) have widely been applied to fisheries assessment and management.
Astrid Sánchez-Jiménez   +5 more
doaj   +1 more source

The concerted emergence of well-known spatial and temporal ecological patterns in an evolutionary food web model in space

open access: yesScientific Reports, 2021
Ecological systems show a variety of characteristic patterns of biodiversity in space and time. It is a challenge for theory to find models that can reproduce and explain the observed patterns. Since the advent of island biogeography these models revolve
Michaela Hamm, Barbara Drossel
doaj   +1 more source

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