Navigation Links
Antarctic fjords are climate-sensitive hotspots of diversity in a rapidly warming region
Date:12/4/2013

ost likely from phytoplankton blooms, macroalgal debris, or even from krilltheir molted carapaces or the dead bodies that sink to the bottom," Grange said. Researchers have even suggested that large aggregations of humpback whales may stimulate fjord primary productivity by releasing nutrients as they feed and defecate in the fjords during seasonal immigration.

Even with a variety of pathways to fuel the remarkable diversity of animals on the seafloor, Antarctic fjord ecosystems are at risk from climate warming.

In today's Antarctica, fjord glaciers currently sustain very little melting and the icebergs they shed drift out to sea without dropping much sediment scientists say these fjords have "weak meltwater influence." As a result, fjord headwaters are clear of suspended sediments, allowing phytoplankton and benthic algae to bloom, and producing little burial disturbance of rich seafloor fauna.

These favorable conditions are very likely to change as the climate warms rapidly, accelerating glacial melting and dumping large amounts of fine glacial sediments into fjord headwaters.

The resulting higher turbidity and seafloor sedimentation will likely shade the phytoplankton and bury diverse seafloor communities, or smother primary production and biodiversity in these narrow canyon-like ecosystems.

"The extraordinary ecosystems, which provide habitat and foraging areas for krill and baleen whales and are hotspots of seafloor diversity, are very likely to be negatively impacted by the very rapid climate warming occurring along the Antarctic Peninsula," Smith said. "The fjords also happen to be the focus of Antarctic ecotourism, with thousands of visitors on cruise ships each year entering the fjords to view penguins and whales and to experience the sheer abundance and diversity of Antarctic life. Climate warming may thus dramatically change some of the most iconic of Antarctic ecosystems."

"These Antarctic fjo
'/>"/>

Contact: Talia S Ogliore
togliore@hawaii.edu
808-956-4531
University of Hawaii at Manoa
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Early-career investigator discovers current volcanic activity under West Antarctica
2. NSF, US Antarctic Program partners, working to restore Antarctic research season to the maximum extent possible
3. Life found in the sediments of an Antarctic subglacial lake for the first time
4. Surprising underwater-sounds: Humpback whales also spend their winter in Antarctica
5. Warming Antarctic seas likely to impact on krill habitats
6. Glass sponges take advantage of retreating Antarctic ice shelves
7. Evidence suggests Antarctic crabs could be native
8. The Antarctic polar icecap is 33.6 million years old
9. Age matters to Antarctic clams
10. Antarcticas first whale skeleton found with 9 new deep-sea species
11. Antarcticas first whale skeleton found with nine new deep-sea species
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Antarctic fjords are climate-sensitive hotspots of diversity in a rapidly warming region
(Date:7/24/2014)... 2014 /PRNewswire-iReach/ -- The Geneva Healthcare Suite, an innovative ... cut emergency room wait times by an average of ... Center, according to a recent study published in the ... using the suite to access data from incoming patients, ... "Using Geneva,s technology platform we have been able ...
(Date:7/24/2014)... on average over a 35 year period in which ... impact of humans on declining animal numbers. This decline ... insects, spiders, crustaceans, slugs and worms bring to our ... decomposition for nutrient cycling, water filtration and human health. ... led by UCL, Stanford and UCSB, focused on the ...
(Date:7/24/2014)... Imagine a smog-free Los Angeles, where electric cars ply ... run on heat from beneath the earth, from howling ... new Stanford study finds that it is technically and ... one powered by clean, renewable energy. Published in ... sustainable, inexpensive and reliable energy supply in California that ...
Breaking Biology News(10 mins):UC San Diego Medical Center Cuts Average ER Wait Time by 92 Minutes using the Geneva Healthcare Suite 2UC San Diego Medical Center Cuts Average ER Wait Time by 92 Minutes using the Geneva Healthcare Suite 3Invertebrate numbers nearly halve as human population doubles 2Invertebrate numbers nearly halve as human population doubles 3Stanford study shows how to power California with wind, water and sun 2Stanford study shows how to power California with wind, water and sun 3Stanford study shows how to power California with wind, water and sun 4
... COLLEGE PARK, Md. - The University of Maryland has ... Foundation to acquire a superconducting 800 MHz Nuclear Magnetic ... to solve complex problems in biology and medicine. The ... be located on the College Park campus and will ...
... horizontal edges to regulate altitude, says a team of ... finding contradicts a previous model, which posited that insects ... them as they fly. This mechanism for controlling ... horizontal edges in their environmentis very similar to the ...
... LA JOLLA, CA August 20, 2010 ERepeatedly ... down the brain cell receptors that respond to it, ... a surprising new study led by Scripps Research Institute ... implications for drug development. The natural painkiller, 2-AG, ...
Cached Biology News:University of Maryland receives $1.9M from NSF for investigations of biomolecular structure 2Fruit flies use horizontal landmarks for altitude control, says Caltech research team 2Fruit flies use horizontal landmarks for altitude control, says Caltech research team 3Fruit flies use horizontal landmarks for altitude control, says Caltech research team 4New study sheds light on painkilling system in brain 2New study sheds light on painkilling system in brain 3New study sheds light on painkilling system in brain 4
(Date:7/24/2014)... OAK RIDGE, Tenn., July 24, 2014 -- A novel ... at the Department of Energy,s Oak Ridge National Laboratory ... known for its unusual physical and electrochemical properties. ... examined how oxygen affects the surface of a perovskite ... electronic behavior. The new avenue to understand surface behavior ...
(Date:7/24/2014)... 24, 2014  Asterias Biotherapeutics, Inc. (OTCBB: ASTYV), ... of regenerative medicine, announced today that it will ... investors on Tuesday, July 29, 2014, at 4:30 ... include an overview of Asterias, business strategy and ... http://www.ustream.tv/channel/asterias-biotherapeutics at least 15 minutes before ...
(Date:7/24/2014)... by group leader Yung-Eun Sung has announced that ... and nitrogen-doped graphenes which can be applied as ... cells. Yung-Eun Sung is both a group leader ... for Basic Science* (IBS) and a professor at ... great significance with regards to the development of ...
(Date:7/24/2014)... and synthetic processes prefer to settle into equilibriuma ... is within the realm of non-equilibrium conditions where ... in energy and phases, such as temperature fluctuations, ... humans to regulate their body temperature, airplanes to ... activity. , But even though these conditions ...
Breaking Biology Technology:ORNL study reveals new characteristics of complex oxide surfaces 2Asterias Biotherapeutics Announces Live Investor Webcast 2Asterias Biotherapeutics Announces Live Investor Webcast 3Asterias Biotherapeutics Announces Live Investor Webcast 4New approach to form non-equilibrium structures 2
... Pittsburgh as I returned from Thanksgiving celebrations. That can only mean ... be far away. This season, the tech industry has a sack ... my favorites. , , FOR THE NETWORKED HOME THAT HAS (ALMOST) ... the Mirra Personal Server is among the most elegant and useful ...
... the UW-Madison survive as a public university when public ... , ,Thats the question being posed these days by ... as a catalyst for Wisconsins high-tech, high-growth economy will ... ,Wiley also believes the university will become less accessible ...
... MILWAUKEE -- Capital Data, Inc., a provider ... today that it is now a Sun Microsystems iForce ... successful completion of advanced training in Sun technology by ... in this region since 1989, we are delighted to ...
Cached Biology Technology:Holiday Tech Gizmo's to Give and Get 2UW-Madison Chancellor Wiley Challenges State to Think About Universitys Future 2UW-Madison Chancellor Wiley Challenges State to Think About Universitys Future 3
...
...
Request Info...
LECHNER AND LaVECK MEDIUMfor the clonal growth of normal human bronchial and other epithelial cells. Requires additives. With glutamine.Recommended storage condition:oC to 8oCIntended use(s):research...
Biology Products: