Trophic position of Antarctic ice fishes reflects food web structure along a gradient in sea ice persistence
نویسندگان
چکیده
منابع مشابه
Benthic Megafaunal Community Structure and Biodiversity Along a Sea Ice Gradient on the Western Antarctic Peninsula:
The Western Antarctic Peninsula (WAP) is experiencing some of the fastest rates of regional warming in the world, resulting in the collapse of ice shelves, warming ocean temperatures, and increased melt and retreat of glaciers. Winter sea ice coverage in the waters off the WAP has decreased in duration and extent over the last half century. The significant changes observed off the WAP are extre...
متن کاملSnow on Antarctic Sea Ice
Snow on Antarctic sea ice plays a complex and highly variable role in air-sea-ice interaction processes and the Earth’s climate system. Using data collected mostly during the past 10 years, this paper reviews the following topics: snow thickness and snow type and their geographical and seasonal variations; snow grain size, density, and salinity; frequency of occurrence of slush; thermal conduct...
متن کاملAntarctic Sea ice--a habitat for extremophiles.
The pack ice of Earth's polar oceans appears to be frozen white desert, devoid of life. However, beneath the snow lies a unique habitat for a group of bacteria and microscopic plants and animals that are encased in an ice matrix at low temperatures and light levels, with the only liquid being pockets of concentrated brines. Survival in these conditions requires a complex suite of physiological ...
متن کاملProteorhodopsin-bearing bacteria in Antarctic sea ice.
Proteorhodopsins (PRs) are widespread bacterial integral membrane proteins that function as light-driven proton pumps. Antarctic sea ice supports a complex community of autotrophic algae, heterotrophic bacteria, viruses, and protists that are an important food source for higher trophic levels in ice-covered regions of the Southern Ocean. Here, we present the first report of PR-bearing bacteria,...
متن کاملRecent changes in Antarctic Sea Ice.
In contrast to the Arctic, total sea ice extent (SIE) across the Southern Ocean has increased since the late 1970s, with the annual mean increasing at a rate of 186×10(3) km(2) per decade (1.5% per decade; p<0.01) for 1979-2013. However, this overall increase masks larger regional variations, most notably an increase (decrease) over the Ross (Amundsen-Bellingshausen) Sea. Sea ice variability re...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 2017
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps12031