Sentences with phrase «food web structures»

In recent decades, much research on these topics has raised the questions of «tipping points» and «system flips,» where feedbacks in the system compound to rapidly cause massive reorganization of global climate over very short periods of time — a truncation or reorganization of the thermohaline circulation or of food web structures, for instance, caused by the loss of sea ice or warming ocean temperatures.
Scientists uniformly agree that whole - lake research offers the best evidence to guide policy, Blais wrote, while «small - scale experiments are inadequate to address issues related to ecosystem services, food web structure, land - water interactions, air - water interactions, shoreline communities, and migratory species.»
Bloem, J. (2005) Analysis of the soil food web structure under grass and grassclover.
The birds» feathers and eggshells contain the chemical fingerprints of variations in diet, food web structure and even climate, researchers reported February 12 at the American Geophysical Union's 2018 Ocean Sciences Meeting.
«Changes in spawning timing and poleward migration of fish populations due to warmer ocean conditions or global climate change will negatively affect areas that were historically dependent on these fish, and change the food web structure of the areas that the fish move into with unforeseen consequences,» researchers wrote.
Current research includes studies of the food web structure and biogeochemistry of Arctic streams and rivers, nitrogen cycling in headwater streams and estuaries, and the impacts of climate change on the freshwater cycle of the Arctic.
Linking the composition and activity of natural microbial communities to the physical composition, biogeochemical processes, and food web structure of planktonic and benthic ecosystems.
The general goal of these projects was to improve our understanding of how the response of arctic marine ecosystems to climate warming will alter food web structure and ecosystem services provided to Northerners.

Not exact matches

The theme will use a structured program of field sampling to generate information needed to develop and populate models of primary production and energy flow in Murray - Darling Basin food webs.
At these locations, the flood didn't cause major changes in the structure of food webs or the productivity of species.»
Among the team's findings: following an experimental flood, sites near the dam had the most dramatic changes in the structure and function of their food webs.
They found both models showed a general feeding structure throughout the plankton food web: The smallest organisms were too small to ingest prey, while the largest plankton were poor competitors when living by photosynthesis.
Thus, past and future increases in atmospheric nitrogen deposition have the potential to alter the base of the marine food web; and, in the long term, the structure of the ecosystem.
'' Watch a video about food webs in this month's Graphic Science Web Exclusive «Food Webs Trace the Structure of an Ecosystem.&rafood webs in this month's Graphic Science Web Exclusive «Food Webs Trace the Structure of an Ecosystem.&rawebs in this month's Graphic Science Web Exclusive «Food Webs Trace the Structure of an Ecosystem.&raFood Webs Trace the Structure of an Ecosystem.&raWebs Trace the Structure of an Ecosystem.»
«In terms of practical nature conservation, these results signify that in the future it will no longer be sufficient to preserve small, isolated reserves — while these benefit specialized species with a simple genetic structure, the bulk of species that depend on an exchange between local populations will lose out in the medium to long term,» predicts Schmitt, and he adds in closing, «This will lead to a further decline of numerous insect species — with dramatic consequences for entire food webs and ecosystems.»
The way in which fishing alters size - structured food web interactions has implications for the structure and function of kelp forest ecosystems.
«What our results then mean is that if we keep splitting natural habitats into smaller and smaller pieces, we may not only lose a lot of species from the resultant fragments, but also change the structure and functioning of local food webs
«Ancient food webs developed modern structure soon after mass extinction.»
Analysis of the Messel forest food web's structure was more challenging due to the high degree of species diversity represented in the Messel dataset — 630 taxa and 5,534 feeding links — far more than what datasets for modern webs include.
Microbial ecology, phytoplankton physiology and mortality, virology, molecular evolution and ecology, biogeochemistry, ecosystem processes, the structure and function of microbial food webs.
With this background in mind, researchers in the Relyea lab at Rensselaer questioned how road salt and the insecticide carbaryl act alone and in combination to affect the structure and function of wetland food webs (carbaryl [commercial name: Sevin] is one of the most commonly applied insecticides in the United States).
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Filled with active, visual and practical tasks about ecology - definition, structure, producers, consumers, decomposers, food chains, food webs, habits, preserving habitats and more.
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Effects of local deforestation on the diversity and structure of Southern California giant kelp forest food webs.
Food webs are affected by changes in the structure of ecological communities and shifts in the geographic ranges of species.
Warming interacts with forest disturbance and drought to shape the energetic structure of soil food webs; these changes can undermine the provision of multiple ecosystem functions in transitional boreal — temperate forests.
Given the lack of detailed proxy records to trace simultaneously biochemical baselines and length of food webs, assessing the extent to which biogeochemical cycling and community structure in pelagic ecosystems have changed over the past century is difficult, as is attributing change to natural cycles versus anthropogenic disturbances.
If you know anything about soil biology, carbon farming or even just permaculture, you'd know that destroying soil structure and leaving it bare is non-ideal, as far as the soil food web is concerned.
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