Results 21 to 30 of about 233,008 (296)
A food chain ecoepidemic model: infection at the bottom trophic level [PDF]
, 2014 In this paper we consider a three level food web subject to a disease affecting the bottom prey. The resulting dynamics is much richer with respect to the purely demographic model, in that it contains more transcritical bifurcations, gluing together the ...
De Rossi, Alessandra +4 more
core +2 more sources
Trophic upgrading and mobilization of wax esters in microzooplankton [PDF]
, 2019 Heterotrophic protists play pivotal roles in aquatic ecosystems by transferring matter and energy, including lipids, from primary producers to higher trophic predators.
D\u27souza, Nigel +7 more
core +3 more sources
Catastrophic regime shifts in model ecological communities are true phase transitions [PDF]
, 2010 Ecosystems often undergo abrupt regime shifts in response to gradual external changes. These shifts are theoretically understood as a regime switch between alternative stable states of the ecosystem dynamical response to smooth changes in external ...
Capitán J A Cuesta J A +10 more
core +2 more sources
Remote Sensing, 2023 The intensification of anthropogenic activities has led to the infiltration of enormous quantities of pollutants into rivers and lakes, resulting in significant deterioration in water quality and a more prominent occurrence of eutrophication. Poyang Lake,
Jianzhong Li +9 more
doaj +1 more source
Ecological Indicators, 2022 Habitat models have gradually become important tools for assessing and predicting the spatio-temporal distribution of marine organisms. Species are closely associated with each other through biological processes such as predation, competition and ...
Yunlei Zhang +5 more
doaj +1 more source
Can Climate Change Trigger Massive Diversity Cascades in Terrestrial Ecosystems?
Diversity, 2013 We summarize research on diversity and trophic interactions under a trophic cascades model that is reframed and expanded from the traditional biomass- or abundance- based indirect effects and discuss the response of such “diversity cascades” to climate ...
Deborah K. Letourneau, Lee A. Dyer
doaj +1 more source
Robust Patterns in Food Web Structure [PDF]
, 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
VIABILITY MODEL OF TROPHIC INTERACTIONS IN MARINE ECOSYSTEMS
Natural Resource Modeling, 2004 ABSTRACT. An attempt to use viability models for studying marine ecosystems is proposed as a possible alternative to classical ecosystem modeling. Viability models do not consider optimal solutions but instead define all possible evolutions of a dynamical system under given constraints.
Mullon, Christian +2 more
openaire +1 more source
Understanding patterns and processes in models of trophic cascades [PDF]
Ecology Letters, 2013 AbstractClimate fluctuations and human exploitation are causing global changes in nutrient enrichment of terrestrial and aquatic ecosystems and declining abundances of apex predators. The resulting trophic cascades have had profound effects on food webs, leading to significant economic and societal consequences.
Heath, Michael R +3 more
openaire +4 more sources
Feeding strategy as a key driver of the bioaccumulation of MeHg in megabenthos [PDF]
BiogeosciencesThe bioaccumulation of methylmercury (MeHg) in the marine food chain poses a neurotoxic risk to human health, especially through the consumption of seafood.
D. J. Amptmeijer +5 more
doaj +1 more source