Sentences with phrase «southern ocean ecosystems»

- Jillian Keenan — Are Antarctica's Southern Ocean Ecosystems Doomed to Death by Diplomatic Paralysis?

Electron micrograph of an Antarctic sea ice diatom, Amphiprora, with attached bacterial cells, illustrating the association between diatoms and bacteria in the Southern Ocean ecosystem

Antarctic krill (Euphausia superba) is the key species of the Southern Ocean ecosystem.

This is without doubt one of the most inspiring and informative journeys into the Southern Ocean ecosystem that one can make.

Finally, a question for David and Gavin: McNeil & Matear (2008, PNAS 2Dec08, «Southern Ocean acidification: A tipping at 450 - ppm atmospheric CO2») suggest that by 2030 and no later than 2038 seasonal aragonite undersaturation is likely to disrupt the Southern Ocean ecosystem, due to key forms of zooplankton being unable to form shells.

Not exact matches

Will Howard of the Antarctic Climate and Ecosystems Cooperative Research Centre in Hobart has shown that some species of coral have a similar sensitivity to acidification as foraminifera in parts of the Southern Ocean, which are struggling to build their shells.

«Southern Ocean: Reconstructing environmental conditions over the past 30,000 years: Sea - ice zone has a major influence on the ecosystem.»

But biogeochemist Kenneth Coale, director of Moss Landing Marine Laboratories in California, estimates that the silicon - rich southern part of the Southern Ocean would deliver up to twice as much potential carbon sequestration as the northern area Smetacek fertilized, in large part because of the diatoms and associated ecosystem dsouthern part of the Southern Ocean would deliver up to twice as much potential carbon sequestration as the northern area Smetacek fertilized, in large part because of the diatoms and associated ecosystem dSouthern Ocean would deliver up to twice as much potential carbon sequestration as the northern area Smetacek fertilized, in large part because of the diatoms and associated ecosystem dynamics.

«We're interested in understanding the ecosystem around the Southern Ocean because it's an extremely productive place,» Asper says.

Fossils provide insight into origin of unique Antarctic ecosystem (19/04/2013) Origin of circum - Antarctic Southern Ocean's ecosystems can be traced back to the emergence of the Antarctic ice sheets....

There's still a host of unanswered questions about the residents of Lake Whillans and how they contribute to the ecosystem of the Southern Ocean.

Again, the point is that in both the Arctic and the Southern Oceans this not only will affect significant marine ecosystems, but also major carbon sinks.

Because hunting and fishing has negatively impacted the Antarctic Ocean's fragile ecosystem, the International Whaling Commission has designated an area spanning about 31,068,560 square miles (50 million square kilometers) in the ocean as the Southern Ocean Whale SanctOcean's fragile ecosystem, the International Whaling Commission has designated an area spanning about 31,068,560 square miles (50 million square kilometers) in the ocean as the Southern Ocean Whale Sanctocean as the Southern Ocean Whale SanctOcean Whale Sanctuary.

The Pew Charitable Trusts encourages CCAMLR to build on this win by creating a network of MPAs in the Southern Ocean, home to some of the most pristine marine ecosystems in the world.

The Southern Ocean and Antarctic systems offer remarkable natural experimental models for studying disrupted ecosystems.

- ARAMATE (The reconstruction of ecosystem and climate variability in the north Atlantic region using annually resolved archives of marine and terrestrial ecosystems)- CLIM - ARCH-DATE (Integration of high resolution climate archives with archaeological and documentary evidence for the precise dating of maritime cultural and climatic events)- CLIVASH2k (Climate variability in Antarctica and Southern Hemisphere in the past 2000 years)- CoralHydro2k (Tropical ocean hydroclimate and temperature from coral archives)- Global T CFR (Global gridded temperature reconstruction method comparisons)- GMST reconstructions - Iso2k (A global synthesis of Common Era hydroclimate using water isotopes)- MULTICHRON (Constraining modeled multidecadal climate variability in the Atlantic using proxies derived from marine bivalve shells and coralline algae)- PALEOLINK (The missing link in the Past — Downscaling paleoclimatic Earth System Models)- PSR2k (Proxy Surrogate Reconstruction 2k)

(01/02/2014) Resting near the bottom of the foodchain, Antarctic krill (Euphausia superba) underpin much of the Southern Ocean's ecosystem.

«The authors write that «the El Niño - Southern Oscillation (ENSO) is a naturally occurring fluctuation,» whereby «on a timescale of two to seven years, the eastern equatorial Pacific climate varies between anomalously cold (La Niña) and warm (El Niño) conditions,» and that «these swings in temperature are accompanied by changes in the structure of the subsurface ocean, variability in the strength of the equatorial easterly trade winds, shifts in the position of atmospheric convection, and global teleconnection patterns associated with these changes that lead to variations in rainfall and weather patterns in many parts of the world,» which end up affecting «ecosystems, agriculture, freshwater supplies, hurricanes and other severe weather events worldwide.»»

In 2004 and 2006, Madin and Kremer studied salp swarms in a different ecosystem, the Southern Ocean near Antarctica.

By 1998, the population was estimated to have increased to 2,280 (95 % CL, 1,160 — 4,500), based on sighting surveys conducted under the auspices of the International Whaling Commission (IWC) during the International Decade of Cetacean Research and Southern Ocean Whale and Ecosystem research cruises (IDCR / SOWER)[5].

Further exploration of high - latitude ridges is critical for a full understanding of the global biogeography of vent ecosystems, given the potential role of the Southern Ocean as a gateway or a barrier between the major ocean ridges and back - arc baOcean as a gateway or a barrier between the major ocean ridges and back - arc baocean ridges and back - arc basins.

Here we show, to our knowledge for the first time, the presence of black smokers, diffuse venting, and associated chemosynthetically driven ecosystems along the ESR, a geographically isolated back - arc spreading centre in the Atlantic sector of the Southern Ocean, Antarctica (Figure 1A).

This is expected to affect coral reefs, cold water corals, and ecosystems (e.g., the Southern Ocean), where aragonite (used by many organisms to make their shells or skeletons) will decline or become undersaturated.

Since the TAR, literature has confirmed that salient vulnerable ecosystems are warm - water coral reefs (Box 4.4), cold - water corals, the Southern Ocean and marginal sea - ice ecosystems.