Sentences with phrase «by pinnipeds»

The researchers estimate that from 1975 to 2015, the yearly biomass of chinook salmon consumed by pinnipeds (sea lions and harbor seals) and killer whales increased from 6,100 to 15,200 metric tons, and from five to 31.5 million individual salmon.

Under sunny skies at Point Reyes National Seashore, the five sea lions were greeted by another pinniped already there - a molting elephant seal weaner!

Not exact matches

The microphones record data at a sample rate of 8kHz, so the group listens up to 4kHz — for scale, the highest note on a normally tuned, standard piano is 4.186 kHz — to include signals produced by large whales like fins, humpbacks, bowheads and killer whales, as well as pinnipeds such as bearded seals and walrus.

In the Galapagos Islands, another wilderness ecosystem inhabited by sea birds and seals, sea lions and other pinnipeds, many tourists visit the breeding colonies every day of the year.

Peter Cook, a psychologist at New College of Florida who has studied pinniped cognition and was not involved in Hanke's work, was most impressed by how easily Luca learned the testing task.

American whalers took 150,000 northern fur seals (Callorhinus ursinus) from the Farallons between 1810 and 1813, followed by Russian fur hunters who lived on the Farallons and extirpated the pinnipeds from the islands.

These pinnipeds are protected by spending at least part of their lives in a national park - or are they?

All of the pinnipeds and nesting seabirds are protected by various laws and we will coach you on how to view them without disturbing them.

Significant changes in sea water temperature like those caused by El Nino events appear to have significant effects on pinniped populations around the Channel Islands.

Tolay Settles in to Point Reyes The morning after her rescue and relocation, Tolay was spotted by Sarah Codde, Biological Science Technician with the Pinniped Monitoring Program at Point Reyes National Seashore.

The pinnipeds were greeted by some other elephant seals that were lounging in the waves at Point Reyes on May 13, 2012.

Sonar is used by the U.S. Navy to detect submarines, but it also can prove devastating to whales, seals and pinnipeds by disrupting their feeding and mating habits.

Changing water temperature also has an effect on the reproduction of cetaceans and pinnipeds, indirectly through prey abundance, either through extending the time between individual breeding attempts, or by reducing breeding condition of the mother (Whitehead, 1997).

United States About Blog Paddling exploration by Michael Daugherty, Sea kayaking guide and instructor at Pinniped Kayak & Old Quarry Ocean Adventures.