Results 71 to 80 of about 333,287 (241)

Molluscan assemblages associated with Gigartina beds in the Strait of Magellan and the South Shetland Islands (Antarctica): a comparison of composition and abundance

Polar Research, 2017
In this paper we evaluated the composition and abundance of molluscs associated with beds of the red algae Gigartina, located in the South Shetland Islands (Antarctic Peninsula) and the Strait of Magellan (southern Chile).
Sebastián Rosenfeld, Cristian Aldea, Jaime Ojeda, Johanna Marambio, Mathias Hüne, Jesús S. Troncoso, Andrés Mansilla   +6 more
doaj   +1 more source

Marine pelagic ecosystems: the West Antarctic Peninsula [PDF]

Philosophical Transactions of the Royal Society B: Biological Sciences, 2006
The marine ecosystem of the West Antarctic Peninsula (WAP) extends from the Bellingshausen Sea to the northern tip of the peninsula and from the mostly glaciated coast across the continental shelf to the shelf break in the west.
Hugh W, Ducklow, Karen, Baker, Douglas G, Martinson, Langdon B, Quetin, Robin M, Ross, Raymond C, Smith, Sharon E, Stammerjohn, Maria, Vernet, William, Fraser   +8 more
openaire   +2 more sources

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

, 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, Barrett, John E., John E. Barrett, Julie L. Smith, Rejto, Lidia, Tusnady, Gabor, Cary, S. Craig, Smith, Julie L., Gábor Tusnády, S. Craig Cary   +9 more
core   +1 more source

Divergent exploratory‐avoidant behavioural strategies may drive niche differentiation in juvenile Antarctic fishes

Journal of Fish Biology, EarlyView.
Abstract We used an ecological niche theory framework integrating physiological and behavioural ecology to understand interspecific differentiation of juveniles of four Antarctic fishes: Trematomus bernacchii, Trematomus pennellii, Trematomus nicolai and Pagothenia borchgrevinki.
Amanda J. Frazier, Andrew W. Naslund, Milica Mandic, Kenneth W. Zillig, Bryant C. Siu, Anne E. Todgham   +5 more
wiley   +1 more source

Glacier surges on James Ross Island, Antarctica, and their relationship with climate [PDF]

The Cryosphere
Although the Antarctic Peninsula has a similar climate to that of other regions hosting surge-type glaciers, only one glacier surge has been previously observed in this region.
B. J. Davison, A. J. Sole, G. Guillet, D. I. Benn, J. Kingslake, J. Kingslake, J. Kingslake, J. C. Ely, S. J. Livingstone, C. D. Stringer, J. L. Carrivick, A. E. Hogg   +11 more
doaj   +1 more source

Adaptation to extreme environments: A review of Antarctic fish physiology

Journal 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, Sachithra Amarin Hettiarachchi, Il‐Chan Kim, Jae‐Seong Lee, Thomas Desvignes, Julia M. York, Laura Ghigliotti, Jilda Alicia Caccavo, Jin‐Hyoung Kim   +8 more
wiley   +1 more source

Fourteen degrees of latitude and a continent apart: comparison of lichen activity over two years at continental and maritime Antarctic sites [PDF]

, 2010
There are marked declines in precipitation, mean temperatures and the number of lichen species with increasing latitude in Antarctica. However, it is not known which factors are the predominant controllers of biodiversity changes.
Burkhard Schroeter, Green, T.G. Allan, Schlensog, Mark, T.G. Allan Green, Sancho, Leopoldo G., Stefan Pannewitz, Leopoldo G. Sancho, Pannewitz, Stefan, Schroeter, Burkhard, Mark Schlensog   +9 more
core   +1 more source

Scotia Arc bryozoans from the LAMPOS expedition: a narrow bridge between two different faunas

Scientia Marina, 2005
The 78 bryozoan species collected by the German R/V “Polarstern” during the LAMPOS cruise in April 2002, encompassing the Scotia Arc archipelagos between Tierra del Fuego and the Antarctic Peninsula, were studied to discern the biogeographical patterns ...
Hugo I. Moyano G.
doaj   +1 more source

Hidden Strategies Beneath a Single Nucleotide: Contrasting Physiology in Lichen Photobiont Strains

Plant, Cell &Environment, EarlyView.
ABSTRACT Lichen photobionts exhibit significant physiological variability with important ecological implications. While this variability is relatively well studied at the interspecific level, it has rarely been examined at the intraspecific level. Here, we investigated the physiological responses to temperature and irradiance of two Trebouxia lynniae ...
Miguel Blázquez, David Pizarro, Ana García‐Muñoz, Raquel Pino‐Bodas, Asunción de los Ríos, Miren I. Arzac, José Ignacio García‐Plazaola, Beatriz Fernández‐Marín, Unai Artetxe, Rosa Toledo‐Gil, Fernando Vallejo, Leonardo M. Casano, Israel Pérez‐Vargas, Sergio Pérez‐Ortega, Francisco Gasulla   +14 more
wiley   +1 more source

Challenging the cold: crabs reconquer the Antarctic [PDF]

, 2005
Recent records of lithodid crabs in deeper waters off the Antarctic continental slope raised the question of the return of crabs to Antarctic waters, following their extinction in the lower Miocene ;15 million years ago.
Thatje, S., Arntz, Wolf, Calcagno, Javier A., Pörtner, Hans-Otto, Lovrich, Gustavo A., Calcagno, Javier Ángel, Arntz, Wolf E., Anger, Klaus, Lovrich, Gustavo Alejandro, Pörtner, Hans Otto, Thatje, Sven, Calcagno, J. A., Lovrich, G. A.   +12 more
core   +1 more source