Results 21 to 30 of about 2,840,144 (244)

Network-Based Biomonitoring: Exploring Freshwater Food Webs With Stable Isotope Analysis and DNA Metabarcoding

open access: yesFrontiers in Ecology and Evolution, 2019
Threatened freshwater ecosystems urgently require improved tools for effective management. Food web analysis is currently under-utilized, yet can be used to generate metrics to support biomonitoring assessments by measuring the stability and robustness ...
Zacchaeus G. Compson   +22 more
doaj   +1 more source

IsoWeb: a bayesian isotope mixing model for diet analysis of the whole food web. [PDF]

open access: yesPLoS ONE, 2012
Quantitative description of food webs provides fundamental information for the understanding of population, community, and ecosystem dynamics. Recently, stable isotope mixing models have been widely used to quantify dietary proportions of different food ...
Taku Kadoya, Yutaka Osada, Gaku Takimoto
doaj   +1 more source

The geometry of evolved community matrix spectra

open access: yesScientific Reports, 2022
Random matrix theory has been applied to food web stability for decades, implying elliptical eigenvalue spectra and that large food webs should be unstable.
Silja Borring Låstad, Jan O. Haerter
doaj   +1 more source

Plant communities and food webs

open access: yesFrontiers in Ecology and Evolution, 2023
Recent theoretical work has provided major new insights into the ways that species interactions in food webs are organized in ways that permit the coexistence of significant numbers of species. But, we seem to have forgotten about trees!
Andy Dobson   +7 more
doaj   +1 more source

Food webs in forest and pasture streams in the Waikato region, New Zealand: A study based on analyses of stable isotopes of carbon and nitrogen, and fish gut contents. [PDF]

open access: yes, 1997
Stable isotopes of carbon (C) and nitrogen (N) were studied in 11 stream communities in the Waikato region of New Zealand. From comparisons of mean d13C and d15N values, food webs in the shaded, forest streams were clearly based on allochthonous material
Hicks, Brendan J., Brendan J. Hicks
core   +1 more source

No complexity–stability relationship in empirical ecosystems

open access: yesNature Communications, 2016
A long-standing ecological hypothesis is that complexity should decrease stability in food webs. Here, Jacquet and colleagues analyse over 100 real-world food webs and show that complexity does not decrease stability, but that a high frequency of weak ...
Claire Jacquet   +6 more
doaj   +1 more source

Compilation and network analyses of cambrian food webs. [PDF]

open access: yesPLoS Biology, 2008
A rich body of empirically grounded theory has developed about food webs--the networks of feeding relationships among species within habitats. However, detailed food-web data and analyses are lacking for ancient ecosystems, largely because of the low ...
Jennifer A Dunne   +4 more
doaj   +1 more source

What constrains food webs? A maximum entropy framework for predicting their structure with minimal biases.

open access: yesPLoS Computational Biology, 2023
Food webs are complex ecological networks whose structure is both ecologically and statistically constrained, with many network properties being correlated with each other.
Francis Banville   +2 more
doaj   +1 more source

Benthic-pelagic mixing of trace elements in estuarine food webs

open access: yes, 2021
Trace element accumulation pathways are important in many ecological and toxicological studies on aquatic organisms, yet these pathways are often poorly understood.
O'Mara, Kaitlyn   +2 more
core   +1 more source

Food Chains and Food Webs in Aquatic Ecosystems

open access: yesApplied Sciences, 2020
Food chains and food webs describe the structure of communities and their energy flows, and they present interactions between species. Recently, diverse methods have been developed for both experimental studies and theoretical/computational studies on ...
Ihn-Sil Kwak, Young-Seuk Park
doaj   +1 more source

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