Sentences with phrase «of krill populations»

Furthermore, we must understand how changes in sea ice cover affect the feeding ecology of humpback whales and their competitors in the short - term and the dynamics of krill populations over the longer term, particularly given the increasing pressure from commercial krill harvests [36].

Not exact matches

Populations of both penguin species have plummeted in recent years, which the research blames on the loss of the tiny, shrimp - like krill that are a staple food for both birds.

Meanwhile, populations of certain species of Antarctic penguins such as the Adélie are dwindling, and Antarctic krill — the tiny crustaceans that feed whales and many other animals — are also on the decline.

As sea waters in the South Atlantic warm, the amount of krill available for seals drops, leading to a smaller yet more genetically varied population

The occasional genetic interchange between populations also seemed to correlate with feeding grounds with high densities of krill, places where whales from different populations are likely to move vast distances and come into contact with other populations.

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.

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].

Given the importance of krill to the South Georgia ecosystem, ongoing assessment of krill stocks and population health has been ongoing for several decades.

The harvesting practices of krill for human consumption are tightly regulated and make a minimal impact on total krill population.

Will there come a point when the recovery of these leviathans butts up against the needs (for krill, for instance) of the world's cresting human population?

attributes both increases and decreases in penguin populations to changes in the abundance of their main prey, Antarctic krill.

Arguing that IR - opaque CO2 is of no consequence because it's a trace gas (molecule-wise) compared to IR - transparent gases like oxygen and nitrogen, is like arguing that Al - Qaeda is of no consequence because it's a trace population (individual-wise) compared to Antarctic krill, ants, or nematodes.

Krill also face another threat, which was not a focus of our research: Concentrated industrial fishing is depleting local krill populations, potentially forcing penguins and other species to shift their foraging pattKrill also face another threat, which was not a focus of our research: Concentrated industrial fishing is depleting local krill populations, potentially forcing penguins and other species to shift their foraging pattkrill populations, potentially forcing penguins and other species to shift their foraging patterns.

The phytoplankton - dependent krill populations in the Southern Ocean which are the staple food of all the great baleen whales are now down by 80 % and the shortfall is now also starving local fish species, penguins and seals.)

The researchers found that the release of terrestrial material trapped by icebergs creates a «halo effect» with significantly increased phytoplankton and krill populations out to a two - mile radius around the icebergs.

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.

Falling populations of penguins in the West Antarctic Peninsula are being driven by a reduction of their main food source, Antarctic krill, according to a new study.