Background Articles

“Our results suggest that warming is both increasing freshwater habitat and improving early marine survival of pink salmon in the northern Bering Sea,” said Ed Farley, NOAA Fisheries biologist at the Alaska Fisheries Science Center, who led the study.

A fungus that lurks in desert soil makes thousands of Americans sick every year with a condition known as Valley Fever. Thanks to climate change, it’s spreading north.

“Dramatic”, says researcher Henrik H. Berntsen. The Norwegian Environment Agency has launched a major offensive to get rid of the invasive species. But, despite more fishing, there appear to be ever more humpback salmon arriving in Norwegian rivers. Currently, around 70,000 pink salmon have been caught in Norwegian watercourses this year.

In recent years, polar bears in the Beaufort Sea have had to travel far outside of their traditional arctic hunting grounds which has contributed to an almost 30% decrease in their population.

About a week ago, we noticed an intruder in our front yard -- a vivid yellow, blob-like substance that appeared to be invisibly oozing across our garden mulch like the beginnings of a horror film.

A wildlife biologist says the search isn’t over. Opossum litters are usually eight or nine joeys — and can be as many as 13.

The Swedish Environmental Protection Agency and Agency for Marine and Water Management want to create a national list of invasive species, and have presented ...

Authorities are searching for a brown bear near the village of Provideniya in Chukotka, Russia. The bear has been sighted near the village, prompting concerns for the safety of the local residents.

There are more than 20 invasive plant species in the Yukon that spread, change the makeup of the soil and generally prevent native plant species from thriving in their natural environment. here's what you can do about six of the most common ones.

Biologists want to know why there are so many moose. It may have a lot to do with shrubs — moose feast on their leaves during the spring and summer. These short woody plants are spreading west, aided by climate change, and moose populations are expanding along with them.

Beavers, on the other hand, leave a mark on the landscape that you can sometimes see from space.Swarming ponds, building dams and expanding waterways, beavers are moving farther and farther into the Arctic, and are changing what the region looks like.

As ocean temperatures trend warmer than average, green crab larvae dispersed in ocean currents from more southern latitudes will find more suitable habitat along the Alaska coast. Recently, adult green crabs have been detected in Skidegate Inlet on Haida Gwaii, British Columbia, and larval crabs have been found in Prince Rupert, both less than 100 miles south of Ketchikan.

Fall moose hunts are beginning across Alaska. In western parts of the state, biologists hope that hunting pressure will help protect the health of booming populations. They also want to know why there are so many moose in the first place. It may have a lot to do with shrubs — particularly scrubby willows shooting up at the edges of open tundra. Moose feast on their leaves during the spring and summer. These short woody plants are spreading west, aided by climate change, and moose populations are expanding along with them.

The destructive, invasive green crabs showed up in Metlakatla last summer. Stumpf explained a few key tells for a crab that doesn’t belong. “They have the five spines on either side of the eyes and then the three bumps in the middle,” he said. “So we’ve been teaching people with guides how to identify the crabs.”

In June 2010, researchers discovered Didemnum vexillum — also known as “rock vomit” — in Whiting Harbor near Sitka. This species, which can cover large areas of the seafloor, is an aggressive invader and a potential threat to shellfish farms, groundfish fisheries, fish spawning and other resources. The council is also concerned about the European green crab which can potentially travel in the ballast water of oil tankers and be released into Prince William Sound.

The birds are smart and attractive, but can also be a hazard for other avian species and the environment.

For the past five years or so, former state Sen. Randall Hardy has watched a few dozen turkey vultures roost in a tree next to his garage. He can tell when the migratory birds return to his central Salina neighborhood each spring as the colors begin to change.

Researchers are predicting low fish runs in the Norton Sound and Northern Bering Sea region again next year, according to research biologist Jim Murphy.