Sentences with phrase «whale populations»

The special group makes up 1 percent of the total gray whale population of 20,000.

The blue whale population is estimated to be around 14,000.

It is fundamental for evaluating the status of killer whale populations.

The partial recovery of a few whale populations over the past 30 years can not be responsible for the decline in fisheries worldwide.

But the scientists involved in recommending the caps for the proposal say that there is still considerable uncertainty in both the estimation of existing whale populations and what constitutes a safe or sustainable target.

«We can imagine a world with relatively abundant whale populations again,» he says.

For example, the new study notes that restoring whale populations could help increase the ocean's capacity to absorb climate - warming carbon dioxide.

There's also a national marine reserve off the coast, which has a gigantic whale population — whales are cool!

The modelling component particularly can be used to test and understand the impact of different potential threats to individual whale populations, for example habitat degradation, ship strikes, or contagious disease.

Our results agree with previous genetic studies suggesting the historical size of the eastern gray whale population was roughly three to five times its current size.

The first comprehensive genetic study of humpback whale populations in the North Pacific Ocean has identified five distinct populations — at the same time a proposal to designate North Pacific humpbacks as a single «distinct population segment» is being considered under the Endangered Species Act.

With the blue whale population in Antarctica down to 300 today from 125,000 a century ago, many representatives from anti-whaling countries say they distrust any whaling operation.

In 2007, the US submitted a «field report» to the International Whaling Commission Scientific Committee asserting the Gray whale population numbered approximately 18,000.

Research on minke whale populations off the Queensland coast show they have a complex language with a rich vocabulary.

This is intended to take account of some of the uncertainties inherent in data on whale populations, and requires only two kinds of data: current estimates and their statistical error; and historical details of catches.

Failure to account for the effects of climate change on these dynamics will undermine our ability to understand changes in the standing biomass of Antarctic krill and also to predict the recovery of whale populations from a century of mismanagement and overexploitation [37].

The Aquarium has partnered with scientists from Woods Hole to monitor right whale populations in our state.

Our work doesn't just end with helping one geographic population — we're marine mammal advocates; our continued work ensures the protection of beluga whale populations around the world.

His team has also flown drones over the Arctic Ocean to track bowhead whale populations with a view to keeping the oil industry out of their way.

Fortunately, Blue Planet II also highlights solutions, including the success of leatherback turtle conservation in Trinidad, the recovery of sperm whale populations around Sri Lanka and herring stocks in Norway.

Current minke whale population estimates vary from over 700,000 to less than 300,000.

The Japanese argument is that the minke whale population around Antarctica has grown unnaturally large due to larger whales in the region being over-hunted in the past.

«I urge Minister Garrett to take action before we have to sit by and once again watch our endangered whale population slaughtered under the guise of Japanese «scientific research,»» Siewert said.

«Humpback whales: Calving ground loyalty drives population differences, study finds: Largest study of its kind helps illuminate unseen connections between whale populations.»

About 60 percent of the North Pacific humpback whale population migrates to Hawaiian waters where they mate, give birth to and nurse their young.

NOAA has collected surveys gray whale population since at least the 1960s.

The current gray whale population numbers 21,000.

In the largest study of its kind to date, researchers used mitochondrial DNA microsatellites from skin samples gathered from more than 3,000 individual humpback whales across the Southern Hemisphere and the Arabian Sea to examine how whale populations are related to one another, a question that is difficult to answer with direct observations of whales in their oceanic environment.

The warm waters provide a safe habitat for delivering and nursing their calves, contributing to the growing whale population in Australia.

«This is a very risk - averse formula,» says Butterworth, who says that there has been debate within the scientific committee as to whether they were being too precautionary for whale populations that are thriving.

Underreporting of kills was common during that time, and scientists lacked — and in fact still lack — adequate methods to estimate whale population size.

IWC enacted the ban in 1986 after commercial whaling drove many whale populations to the brink of extinction.

In the 1970s and 1980s, for example, researchers argued that reducing certain whale populations would aid stocks of krill, a ubiquitous crustacean in the Southern Ocean that is a key food source for baleen whales and other marine species.

The Scientific Committee has come into its own as a source of information, understanding, and ideas concerning whale populations throughout the world.

No Direct Competition For Food This new genetic analysis however shows that «direct competition for food is not keeping the large whale populations from recovering.»

Like most whale populations, the souther right whale was extensively hunted from the mid 18th century up until the -LSB-...]

Killing whales for commercial purposes had driven Australian whale populations, especially those of sperm and humpback whales, frighteningly close to the edge of extinction.

The conservationists used to have a point when they argued that little was known about whale populations, and less about how to manage them properly.

A. Several whale populations are indisputably endangered, including western gray whales (eastern gray whales, which are the population of gray whales found on the Pacific coast of North America, are no longer considered endangered), eastern bowhead whales, North Atlantic and Pacific right whales, blue whales, and most humpback whales.

«Five distinct humpback whale populations identified in North Pacific.»

Most estimates of historic whale population size have been extrapolated from old whaling figures, but this method is often very inaccurate, argues marine biologist Steve Palumbi of Stanford University's Hopkins Marine Station in California, US.

The research results build on previous regional studies of genetic diversity and will help scientists to better understand how humpback whale populations evolve over time and how to best advise international management authorities.

Treadwell noted that, in two separate instances, the U.S. National Oceanic and Atmospheric Administration changed its estimate of the Arctic's bowhead whale population based on native reports that showed more whales than the government initially counted.

Norway will itself update its population estimates in July with a «sighting survey», an approved method of extrapolating whale populations from the number spotted from ships.

New lice species would have arisen precisely when the right - whale populations diverged.

Picking out the patterns took a while; the team had to listen to 745 songs in total from six whale populations across the South Pacific over the 11 - year period.

Now the trio has created a model to examine in more detail how a cap - and - trade market might impact whale populations and how the costs and benefits would change for people who want to hunt or conserve them.

The model combines whale population dynamics with an economic model of demand for whales and shows what happens to prices and populations when whalers and nongovernmental organizations (NGOs) exchange shares.

Using data generated from more than 3,000 skin samples from individual whales ranging from the South Atlantic to the Indian Oceans, the research team has uncovered previously unknown degrees of relatedness between different whale populations.