نتایج جستجو برای: chironomid abundance
تعداد نتایج: 81236 فیلتر نتایج به سال:
Insect larvae are reported to be a major component of the simple but highly productive trophic web found in Lake Magadi (Kenya, Africa), which is considered to be one of the most extreme aquatic environments on Earth. Previous studies show that fish must display biochemical and physiological adjustments to thrive under the extreme conditions of the lake. However, information for invertebrates i...
Fossil assemblages of chironomid larvae (non-biting midges) preserved in lake sediments are well-established paleothermometers in north-temperate and boreal regions, but their potential for temperature reconstruction in tropical regions has never before been assessed. In this study, we surveyed subfossil chironomid assemblages in the surface sediments of 65 lakes and permanent pools in southwes...
The recent rise in air temperatures detected at high altitudes of the Tibetan Plateau has accelerated glacier melt and retreat. Moreover, enhanced monsoonal precipitation increased runoff transport allochthonous material to lakes. Consequently, water levels are rising, modifying spatial distribution composition local aquatic biota. To infer these environmental biological changes decades, a 30-c...
Species distribution models (SDMs) are a general suite of models that relate the frequency of species occurrences (presence only or presence/absence) to sets of environmental variables. These relationships can then be used to generate predictions of the geographic areas where the species are expected to occur, making SDMs powerful and widely used tools in conservation biology, biogeography and ...
چکیده ندارد.
Aquatic ecosystem responses to Holocene climate change and biome development in boreal, central Asia
Boreal ecosystems are highly vulnerable to climate change, and severe ecological impacts in the near future are virtually certain to occur. We undertook a multiproxy study on an alpine lake (ESM-1) at the modern tree-line in boreal, southern Siberia. Steppe and tundra biomes were extensive in eastern Sayan landscapes during the early Holocene. Boreal forest quickly expanded by 9.1 ka BP, and do...
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