Featured Research

from universities, journals, and other organizations

Sea Otter, Peregrine Falcon Back From The Brink Of Extinction But Other Species At Risk In Canada

Date:
October 4, 2007
Source:
Dalhousie University
Summary:
There's good news and bad news in the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) report. The good news: The peregrine falcon and the sea otter no longer face extinction. The not-so-good news: COSEWIC proposes adding another 36 species to Canada's official List of Wildlife Species at Risk. Species from all regions of the country, on the land and in the sea, are at risk of extinction.

There has been a dramatic resurgence of the sea otter. Long ago the species was hunted for its rich brown pelt.
Credit: Image courtesy of Dalhousie University

There’s good news and bad news in the report the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) just dropped on the Minister of the Environment’s desk.

The good news: The peregrine falcon and the sea otter no longer face extinction.

The not-so-good news: COSEWIC proposes adding another 36 species to Canada’s official List of Wildlife Species at Risk. Species from all regions of the country, on the land and in the sea, are at risk of extinction.

“Our job is to assess species based on the best available scientific, community and aboriginal traditional knowledge available,” says Jeffrey Hutchings. The Dalhousie biology professor has served as the chair of the committee for more than a year. “What we don’t take into account are the political or socio-economic consequences of our assessments.”

COSEWIC is a national scientific advisory body that assesses the status of wild species, subspecies, varieties, or other important units of biological diversity, that are considered to be at risk in Canada. As an arm’s length body, COSEWIC reports annually to the Minister of the Environment, who can accept the body’s recommendations, reject them or send species back to COSEWIC for further evaluation.

The peregrine falcon was almost wiped out in the 1950s and ‘60s because of pesticide contamination that thinned their eggshells. But since the 1970s, particularly after DDT was banned in Canada, this impressive bird of prey has made a strong recovery.

The resurgence of the sea otter — its rich brown pelt was once prized the world over — is even more dramatic. Extirpated on Canada’s west coast because of the fur trade more than a century ago, sea otters from California were reintroduced to British Columbia in the early 1970s. They’ve since repopulated a third of their historic range along the province’s coastline, and although numbers are still small, the population is healthy and expanding.

"It’s very satisfying to witness the successful recovery of species that were on the edge of extinction. It highlights the importance of endangered species legislation and associated recovery programs in protecting and recovering Canada’s wildlife," says Dr. Hutchings.

If only that legislation could help species like the basking shark, a plankton-feeding fish that grows to the size of a bus; the Eastern pond mussel, decimated by the introduction of the zebra mussel into the Great Lakes; and the Eastern flowering dogwood, one of Canada’s showiest trees which is being destroyed by an invasive species of fungus.

“Habitat loss and disturbance are the biggest threats facing species. This could be the result of factors as diverse as forestry, housing development, or changes to the natural flow of rivers,” says Dr. Hutchings. “Another major threat is the invasion of exotics that can have devastating effects on Canada’s native species.”

“Habitat loss and disturbance are the biggest threats facing species. This could be the result of factors as diverse as forestry, housing development, or changes to the natural flow of rivers,” says Dr. Hutchings. “Another major threat is the invasion of exotics that can have devastating effects on Canada’s native species.”

The legal list has expanded to include 389 species, which are categorized as extirpated, endangered, threatened or special concern.


Story Source:

The above story is based on materials provided by Dalhousie University. Note: Materials may be edited for content and length.


Cite This Page:

Dalhousie University. "Sea Otter, Peregrine Falcon Back From The Brink Of Extinction But Other Species At Risk In Canada." ScienceDaily. ScienceDaily, 4 October 2007. <www.sciencedaily.com/releases/2007/09/070928210151.htm>.
Dalhousie University. (2007, October 4). Sea Otter, Peregrine Falcon Back From The Brink Of Extinction But Other Species At Risk In Canada. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2007/09/070928210151.htm
Dalhousie University. "Sea Otter, Peregrine Falcon Back From The Brink Of Extinction But Other Species At Risk In Canada." ScienceDaily. www.sciencedaily.com/releases/2007/09/070928210151.htm (accessed August 20, 2014).

Share This




More Plants & Animals News

Wednesday, August 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Newsy (Aug. 19, 2014) Scientists have developed a new device that mimics the way octopuses blend in with their surroundings to hide from dangerous predators. Video provided by Newsy
Powered by NewsLook.com
Disquieting Times for Malaysia's 'fish Listeners'

Disquieting Times for Malaysia's 'fish Listeners'

AFP (Aug. 19, 2014) Malaysia's last "fish listeners" -- practitioners of a dying local art of listening underwater to locate their quarry -- try to keep the ancient technique alive in the face of industrial trawling and the depletion of stocks. Duration: 02:29 Video provided by AFP
Powered by NewsLook.com
USDA Cracks Down On Imports From Foreign Puppy Mills

USDA Cracks Down On Imports From Foreign Puppy Mills

Newsy (Aug. 18, 2014) New USDA measures to regulate dog imports aim to crack down on buying dogs from overseas puppy mills. Video provided by Newsy
Powered by NewsLook.com
Bone Marrow Drug Regrows Hair In Some Alopecia Patients

Bone Marrow Drug Regrows Hair In Some Alopecia Patients

Newsy (Aug. 18, 2014) Researchers performed an experiment using an FDA-approved drug known as ruxolitinib. They found it to be successful in the majority of patients. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins