Results 31 to 40 of about 456,694 (300)
The trophic requirements of selected underwood species occurring in forests
Forest Research Papers, 2014 Abstract The subject of this study were soil requirements of common woody shrubs, which may be part of the forest understory (Sorbus aucuparia L., Frangula alnus Mill., Corylus avellana L., Juniperus communis L., Padus avium Mill., Euonymus europaea L., Sambucus nigra L.).
Lasota, Jarosław +3 more
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Past selection impacts the strength of an aquatic trophic cascade
Functional Ecology, 2018 Abstract In complex food webs, interactions among species in different trophic levels can generate cascading indirect effects that couple top predators with primary producers, thereby affecting ecosystem functioning. Natural selection imposed by top predators on intermediate predators may play a role in shaping the strength of these trophic cascades,
Brittany H. Ousterhout +4 more
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Understanding patterns and processes in models of trophic cascades [PDF]
, 2013 Climate 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
Speirs, Douglas +8 more
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Ecology and Evolution, 2021 Biodiversity decline causes a loss of functional diversity, which threatens ecosystems through a dangerous feedback loop: This loss may hamper ecosystems’ ability to buffer environmental changes, leading to further biodiversity losses.
Laurie Anne Wojcik +2 more
doaj +1 more source
Determining trophic niche width: a novel approach using stable isotope analysis [PDF]
, 2004 1. Although conceptually robust, it has proven difficult to find practical measures of niche width that are simple to obtain, yet provide an adequate descriptor of the ecological position of the population examined. 2.
Bearhop, S. +8 more
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Heterotrophic Dinoflagellate Growth and Grazing Rates Reduced by Microplastic Ingestion
Frontiers in Marine Science, 2021 Microplastics are ubiquitous contaminants in marine ecosystems worldwide, threatening fisheries production, food safety, and human health. Ingestion of microplastics by fish and large zooplankton has been documented, but there are few studies focusing on
Victoria M. Fulfer, Susanne Menden-Deuer
doaj +1 more source
Trophic Classification of Selected Lakes in Yellowstone National Park
The UW National Parks Service Research Station Annual Reports, 1999 The purpose of this study is to evaluate the trophic state of five lakes in southern Yellowstone National Park in order to determine if the human activity in the local area is having a negative environmental impact and possibly increasing the eutrophication rate.
A. Miller, David Snow
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An assessment of the trophic structure of the Bay of Biscay continental shelf food web: Comparing estimates derived from an ecosystem model and isotopic data [PDF]
, 2013 Comparing outputs of ecosystem models with estimates derived from experimental and observational approaches is important in creating valuable feedback for model construction, analyses and validation.
Lassalle, Géraldine +3 more
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Біологія тварин, 2023 As a result of the research, 109 individuals of two amphibian species: the common frog (Rana temporaria) and the common toad (Bufo bufo) were selected. These two species are the most numerous among other species of amphibians within the studied territory,
N. Balandiukh
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Towards methodological approaches to implement the zooplankton component in “end to end” food-web models [PDF]
, 2009 The modelling of marine zooplankton has made great progress over the two last decades covering a large range of representations from detailed individual processes to functional groups. A new challenge is to dynamically represent zooplankton within marine
Poggiale, Jean-Christophe +4 more
core +1 more source