News tagged with whale population
Whale population size, dynamics determined based on ancient DNA
Estimates of whale population size based on genetics versus historical records diverge greatly, making it difficult to fully understand the ecological implications of the large-scale commercial whaling of the 19th and early ...
May 09, 2012 |
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Arctic marine mammals and fish populations on the rise
Arctic marine mammals and fish populations are on the rise, according to a report released on Monday by the the Arctic Council's biodiversity working group at a Montreal conference.
Apr 24, 2012 |
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Meat eating led to earlier weaning, helped humans spread across globe
When early humans became carnivores, their higher-quality diet allowed mothers to wean babies earlier and have more children, with potentially profound effects on population dynamics and the course of human evolution, according ...
Apr 18, 2012 |
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Whales' signals reveal retreat from ill-fated oil rig
A technique that monitors whales through the sounds they emit has answered a key issue raised by the explosion of the Deepwater Horizon oil rig in the Gulf of Mexico two years ago this month.
Apr 06, 2012 |
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Marine mammals on the menu in many parts of world
The fate of the world's great whale species commands global attention as a result of heated debate between pro and anti-whaling advocates, but the fate of smaller marine mammals is less understood, specifically ...
Jan 24, 2012 |
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Juvenile predation preventing Steller sea lion recovery
A new study suggests that the impact of predation on juvenile Steller sea lions in the Gulf of Alaska has been significantly underestimated, creating a "productivity pit" from which their population will have ...
Jan 18, 2012 |
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Protecting predator and prey when both are in trouble
When both a predator and its prey are conservationally at risk, it can be difficult to find the right balance of ecosystem management to sustain and protect both.
Nov 09, 2011 |
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New, higher estimates of endangered humpback whales in the North Pacific
Scientists have increased the estimate on the number of humpback whales in the North Pacific Ocean in a paper published in the journal Marine Mammal Science. The increase follows a refined statistical analys ...
Oct 18, 2011 |
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Japan to continue Antarctic whaling: farm minister
Japan will go ahead with its annual whale hunt in Antarctica while boosting security to guard against possible harassment by environmental protesters, the agriculture and fisheries minister said Tuesday.
Oct 04, 2011 |
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Bowhead whales using the Northwest Passage
(PhysOrg.com) -- According to a new study published in Biology Letters, the climate changes and melting of ice in the Northwest Passage are leading to the mingling of two bowhead whale populations that have b ...
Sep 22, 2011 |
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Cape Cod Bay holds hidden risk for dining North Atlantic right whales
Tracking their dinner may be the best way to help North Atlantic right whales in Cape Cod Bay avoid being hit by recreational and commercial boats, according to a team of researchers who studied the whales ...
Aug 03, 2011 |
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Paternity testing helps fill in family tree for Puget Sound's killer whales
In a study published online this month in the Journal of Heredity, NOAA researchers and others, using DNA testing to fill in a missing link in the lives of killer whales that seasonally visit Washington's Puget Sound, have d ...
Jul 21, 2011 |
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Gray whales likely survived the Ice Ages by changing their diets
(PhysOrg.com) -- Gray whales survived many cycles of global cooling and warming over the past few million years, likely by exploiting a more varied diet than they do today, according to a new study by University ...
Jul 06, 2011 |
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Stranding records are faithful reflection of live whale and dolphin populations: study
Whales are the earth's largest creatures, yet they are incredibly hard to study in the open ocean. For decades scientists have used boats, aircraft and even high cliffs to conduct visual surveys and gather ...
Jun 07, 2011 |
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Prey-tell: Why right whales linger in the Gulf of Maine
(PhysOrg.com) -- As they might with most endangered animals, scientists consider the whereabouts and activities of right whales extremely important. "It is helpful to know where they go, why they go there ...
Apr 26, 2011 |
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