Earth Science News  





. Live Via Satellite Scientists To Track Caspian Sea Sturgeons

Caspian Sea beluga sturgeon have suffered severe declines in recent times, with estimates suggesting a 90 percent decline over the last two decades. The Ural River is home to the last great population of the beluga and is the only place where beluga reproduces naturally and unhindered by dams. Preserving this population is vital to ensuring natural replenishment of Caspian beluga.
by Staff Writers
Atyrau, Kazakhstan (SPX) May 26, 2006
Scientists working in the Ural River, Kazakhstan, have successfully attached Pop-up Archival Transmitting (PAT) tags to four sturgeons and have released the animals into the Caspian Sea, hoping to get a clear picture of Caspian Sea sturgeon movement and behavior never before available.

Led by Dr. Phaedra Doukakis of the University of Miami's Pew Institute for Ocean Science and scientists from the Research and Production Center for the Fish Industry of the Republic of Kazakhstan and in collaboration with Daniel Erickson of the Wildlife Conservation Society, this study of three beluga (Huso huso) sturgeons and one adult ship (Acipenser nudiventris) sturgeon is a rare collaboration between Kazakhstani and American scientists.

"This study is precedent setting," says Dr. Doukakis. "It is the first to use satellite tagging to study Caspian Sea sturgeons. Kazakhstan has taken a giant leap forward with this research and set an example for other Caspian nations to follow. What we learn will be critical for conservation of these highly endangered sturgeons."

Collecting data every minute for a specified period of time and then relaying the archived information to scientists, satellite tags are an increasingly important tool for studying fish biology, especially for sturgeons. Mr. Erickson was the first to apply satellite technology to study sturgeon, using it with green sturgeon on the west coast of the United States.

"These tags provide a window into species biology and behavior not available to us previously," he says. "We will undoubtedly learn things that will challenge long-held assumptions and contribute to better management."

Caspian Sea beluga sturgeon have suffered severe declines in recent times, with estimates suggesting a 90 percent decline over the last two decades. The Ural River is home to the last great population of the beluga and is the only place where beluga reproduces naturally and unhindered by dams. Preserving this population is vital to ensuring natural replenishment of Caspian beluga.

"The outlook for wild sturgeon populations around the world is bleak, especially for beluga and ship sturgeon, which have been overfished to an extreme and are the most endangered of all Caspian species," says Dr. Ellen Pikitch, executive director of the Pew Institute for Ocean Science and founder of the research project. "Beluga sturgeon now have a chance at survival thanks to studies such as these and the recent CITES ban on international trade in most all Caspian Sea caviars."

Beluga and other Caspian sturgeons recently received a reprieve from trade pressures thanks to action by the Convention on International Trade of Endangered Species of Wild Flora and Fauna (CITES) and US listing of beluga under the Endangered Species Act, which effectively banned beluga caviar import into the US. Controlling legal and illegal fishing in Caspian Sea range states and undertaking scientific research is now critical for continued survival of the species.

Last fall, Dr. Pikitch, along with Dr. Doukakis and Mr. Erickson published the first ever global review of sturgeon populations in the journal Fish and Fisheries. Local extinctions were reported in 19 of 27 species, and the Caspian Sea beluga and ship sturgeon populations were among the most critical.

In 2003, the Pew Charitable Trusts partnered with the University of Miami Rosenstiel School of Marine and Atmospheric Science to provide a generous, multi-year grant and founded the Pew Institute for Ocean Science, which undertakes, sponsors, and promotes world-class scientific activity aimed at protecting the world's oceans and the species that inhabit them.

The scientific role of the institute is to increase public understanding of the causes and the consequences of problems affecting the marine environment. The conservation role is to promote solutions to these problems.

Related Links
Pew Institute for Ocean Science

Bear that panicked Bavaria spotted in Austria
Vienna (AFP) May 25, 2006
A brown bear that caused panic last week in the south German state of Bavaria has been spotted across the border in western Austria, an Austrian hunter told local radio on Thursday.

.
Get Our Free Newsletters Via Email
  



  • Ocean Useful In Hurricane Disaster Relief
  • Researchers Release Draft Final Report On New Orleans Levees
  • CapRock Expands Disaster Satellite Services in Preparation For Hurricane Season
  • New Network Needed to Solve First Responder Communications Crisis

  • Climate change threatens EU biodiversity target: Britain
  • Tropical Forests Leak Nitrogen Back Into Atmosphere
  • Greenhouse Gas/Temp Feedback Mechanism May Raise Warming Further
  • Canada wants Kyoto climate-change deal scrapped: report

  • ESA Makes World Fire Maps Available Online
  • UN puts world fish monitoring data on Internet
  • Akari Delivers Its First Images
  • Province Of Ontario Secures Quickbird Imagery Library

  • Better Distillation Curve Apparatus Built
  • Sweet Success For Pioneering Hydrogen Energy Project
  • Kazakh pipeline begins delivering oil to China
  • China hikes fuel prices as global oil costs stay high

  • Orange Juice Could Be A Source Of Foodborne Disease
  • No Cancer Link For Pot Smokers
  • New Vaccine Development Provides Potent Long-Lasting Immunity
  • Secrecy Breeds Confusion In Iran Over Flu Preparations

  • Live Via Satellite: Scientists To Track Caspian Sea Sturgeons
  • Satellite Tracking Reveals Migratory Mysteries Of Atlantic Loggerhead Turtles
  • How Ancient Whales Lost Their Legs, Got Sleek And Conquered The Oceans
  • Brazil Creates Buffer Zone Around Coral Reefs Off Atlantic Coast

  • Managing Indian E-Waste
  • Finland hopes to clean up Russian shipping in Baltic
  • Test For Dioxin Sensitivity In Wildlife Could Result From New Study
  • Exxon Valdez Oil Found In Tidal Feeding Grounds Of Ducks, Sea Otters

  • MIT Poet Develops 'Seeing Machine'
  • Robotic Joystick Reveals How Brain Controls Movement
  • Cure For Reading Glasses May Be In View
  • When It Comes To Privacy, Gender Matters

  • The content herein, unless otherwise known to be public domain, are Copyright 1995-2006 - SpaceDaily.AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA PortalReports are copyright European Space Agency. All NASA sourced material is public domain. Additionalcopyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement