Results 21 to 30 of about 221,873 (152)

Diatom-specific highly branched isoprenoids as biomarkers in Antarctic consumers. [PDF]

open access: yesPLoS ONE, 2013
The structure, functioning and dynamics of polar marine ecosystems are strongly influenced by the extent of sea ice. Ice algae and pelagic phytoplankton represent the primary sources of nutrition for higher trophic-level organisms in seasonally ice ...
Aurélie Goutte   +7 more
doaj   +1 more source

Genetic diversity of Antarctic fish [PDF]

open access: yes, 2014
Correct species identification is fundamental to all areas of biology, but particularly the policy related areas of conservation and fisheries management.
Fitzcharles, Elaine M.
core   +2 more sources

Resolving environmental drivers of microbial community structure in Antarctic soils [PDF]

open access: yes, 2009
Antarctic soils are extremely cold, dry, and oligotrophic, yet harbour surprisingly high bacterial diversity. The severity of environmental conditions has constrained the development of multi-trophic communities, and species richness and distribution is ...
Lídia Rejtö   +9 more
core   +1 more source

Fish from the Southern Ocean: biodiversity, ecology and conservation challenges

open access: yesFrontiers in Marine Science, 2015
According to the most recent census, the modern fauna of the Southern Ocean (SO) includes 374 fish species. Among them, a single group of closely related species, the suborder Notothenioidei, dominates, in terms of diversity, biomass and abundance ...
Marino Vacchi
doaj   +1 more source

Daily ration of Antarctic silverfish (Pleuragramma antarcticum Boulenger, 1902) in the Eastern Weddell Sea

open access: yesScientia Marina, 2004
The daily ration of Pleuragramma antarcticum in the Eastern Weddell Sea was investigated from midwater and bottom trawl samples collected in the Antarctic in the summer of 1998.
Ignacio Olaso   +2 more
doaj   +1 more source

Spatial structuring and life history connectivity of Antarctic silverfish along the southern continental shelf of the Weddell Sea

open access: yesMarine Ecology Progress Series, 2019
A multi-disciplinary approach was employed to examine a physical-biological population hypothesis for a critical forage species, the Antarctic silverfish Pleuragramma antarctica. Caccavo et al.
J. Caccavo   +5 more
semanticscholar   +1 more source

Molecular support for Pleistocene persistence of the continental Antarctic moss Bryum argenteum [PDF]

open access: yes, 2010
We examined sequence variation of ITS and phy2 for Bryum argenteum from Antarctica, sub-Antarctic, New Zealand and Australia to understand better taxonomic delimitations and resolve relationships between these geographic regions. Bryum argenteum has been
Gemmill, C.   +8 more
core   +1 more source

The ecological importance of Antarctic Silverfish [PDF]

open access: yes, 2016
The Antarctic marine ecosystem is very unique. It supports a fast range of species ranging from phytoplankton to blue whales. Many of these species are endemic, including the Antarctic silverfish Pleuragramma antarcticum which is abundant throughout ...
Rodgers, Rata Pryor
core   +1 more source

Estimating the distribution of demand for Antarctic krill (Euphauisa superba) from land-based predators at South Georgia [PDF]

open access: yes, 2007
South Georgia is renowned for the abundance of Antarctic krill (Euphausia superba) and a range of krill predators. Variability in krill availability at a range of scales, and the consequences of this for predator-prey interactions, mean that quantifying ...
Swarbrick, Matthew Lewis
core   +2 more sources

Adaptation to extreme environments: A review of Antarctic fish physiology

open access: yesJournal of Fish Biology, EarlyView.
Abstract Having evolved in the chronically cold and thermally stable waters of the Southern Ocean (SO) for millions of years, Antarctic fish possess a suite of physiological specializations that enable them to survive at temperatures near the freezing point of seawater. Adaptations include the evolution of antifreeze proteins, modifications of membrane
Seungyeon Lee   +8 more
wiley   +1 more source

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