Results 21 to 30 of about 4,256,851 (341)

Robust Patterns in Food Web Structure [PDF]

open access: yes, 2002
We analyze the properties of seven community food webs from a variety of environments--including freshwater, marine-freshwater interfaces and terrestrial environments.
American Physical Society   +3 more
core   +3 more sources

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
Biggs B., Lester P. J., Main M. L.
core   +2 more sources

What's in a tide pool? Just as much food web network complexity as in large open ecosystems.

open access: yesPLoS ONE, 2018
Understanding the fundamental laws that govern complex food web networks over large ecosystems presents high costs and oftentimes unsurmountable logistical challenges.
Vanessa Mendonça   +9 more
doaj   +1 more source

Species-specific biomagnification and habitat-dependent trophic transfer of halogenated organic pollutants in insect-dominated food webs from an e-waste recycling site

open access: yesEnvironment International, 2020
Aquatic, amphibious, and terrestrial organisms in or around a pond that was contaminated by e-waste were collected and persistent halogenated organic pollutants (HOPs) for these species were analyzed.
Yu Liu   +6 more
doaj   +1 more source

Local stability properties of complex, species‐rich soil food webs with functional block structure

open access: yesEcology and Evolution, 2021
Ecologists have long debated the properties that confer stability to complex, species‐rich ecological networks. Species‐level soil food webs are large and structured networks of central importance to ecosystem functioning.
Francisco deCastro   +18 more
doaj   +1 more source

FOOD WEB COHESION

open access: yesEcology, 2004
Both dynamic and topologic approaches in food webs have shown how structure alters conditions for stability. However, while most studies concerning the structure of food webs have shown a nonrandom pattern, it still remains unclear how this structure is related to compartmentalization and to responses to perturbations. Here we build a bridge
Melián, Carlos J., Bascompte, Jordi
openaire   +2 more sources

Response of Food-Webs Indicators to Human Pressures, in the Scope of the Marine Strategy Framework Directive

open access: yesFrontiers in Marine Science, 2021
Understanding food webs environmental condition is a challenging task since evaluations are limited by data on key ecosystem elements, by the availability of indicators that incorporate relevant guilds and by the difficulty in establishing cause-effect ...
Inês Machado   +4 more
doaj   +1 more source

Deleting species from model food webs [PDF]

open access: yes, 2004
We use food webs generated by a model to investigate the effects of deleting species on other species in the web and on the web as a whole. The model incorporates a realistic population dynamics, adaptive foragers and other features which allow for the ...
Abrams   +43 more
core   +3 more sources

The impact of 850,000 years of climate changes on the structure and dynamics of mammal food webs. [PDF]

open access: yesPLoS ONE, 2014
Most evidence of climate change impacts on food webs comes from modern studies and little is known about how ancient food webs have responded to climate changes in the past. Here, we integrate fossil evidence from 71 fossil sites, body-size relationships
Hedvig K Nenzén   +2 more
doaj   +1 more source

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

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