island-conservation-invasive-species-preventing-extinctions-anacapa-island-scripps-murrelet-earth-day-feat

Restoration Makes an Instant Impact on Anacapa Island

As Earth Day approaches, Island Conservation will share stories of hope and success in conservation.

The first project of its kind in the United States, the restoration of Anacapa Island, helps the Scripps’s Murrelets avoid “Endangered” listing.

Only 14 miles off the coast of Ventura, California, lies the three islands that form Anacapa Island. They, in turn, are easternmost islands in the Channel Islands National Park, established in 1978.

The Challenge

Thousands of birds use Anacapa Island as a nesting area because of its natural lack of predators. However, invasive black rats brought to Anacapa in the 1940’s on ships traveling to the islands were causing havoc on the islands—biologists discovered high rates of predation on murrelet eggs and found bird bands outside rat nests, evidence that rats were eating young birds. Researchers found that more than 96% of Scripps’s Murrelet nests on Anacapa were being predated by invasive rats.

island-conservation-invasive-species-preventing-extinctions-anacapa-island-landscape-seascape
View of Anacapa Island, California Channel Islands. Credit: Abe Borker

The Solution

In 2001 and 2002, Island Conservation and its partners removed the rats from Anacapa Island, with subsequent monitoring confirming the rats were completely removed.

Outcome

The removal of the rats had an almost instantaneous effect.

In the absence of the invasive predators, Scripps’s Murrelets rebounded almost immediately, with continued strong evidence of Murrelet population growth through the expansion of breeding area, increased nest occupancy, and a higher number of eggs laid at one time.

island-conservation-invasive-species-preventing-extinctions-anacapa-cassins-auklet
Restoration of Anacapa Island helped the Cassin’s Auklet and Scripps’ Murrelet avoid listing being listed as Endangered. Credit: Island Conservation

Today, hatching success among the Murrelets is greater than 90%, compared to less than 20% when rats occupied the island. Cassin’s Auklets have also re-colonized the island. In 2011, Endangered Ashy Storm-petrels established nesting sites on the island for the first time ever.

With the island free of invasive rats, the island continues to return to what it once might have been.

Featured photo: A 90% increase in hatchling survival of the Scripps’ Murrelet helps avoid Endangered listing. Credit: Shayne Wolf

About Anton Nebbe

Anton is a public relations, communications, and change management specialist with two decades of experience in a range of industries. He is a journalist by trade, having earned his qualifications in South Africa and reported on the country's transition into democratic rule. Having grown up in a conservation-minded family in Africa, that passion has stayed with him and he is delighted to volunteer with Island Conservation.

View All Posts

Follow Island Conservation on Social Media

[ism-social-followers list='fb,tw,li,youtube,instagram' template='ism_template_sf_1' list_align='horizontal' display_counts='false' display_full_name='true' box_align='center' ]

[ism-social-followers list='fb,tw,li,youtube,instagram' template='ism_template_sf_1' list_align='horizontal' display_counts='false' display_full_name='true' box_align='center' ]

Midway Atoll conservation

 

 

 

%d bloggers like this:
Send this to a friend

bodybuilding weight loss pills mother apron after diet and exercise weight loss boiled egg diet plan for weight loss most effective diets for quick weight loss best breastfeeding diet to lose weight protein bar recipes for keto diet lose weight diet drinks with fennel subway diet plan to lose weight 5 day cleanse diet weight loss raw diet and weight loss a proper weight loss diet prescrption weight loss pills best natural weight loss pills for women over 60 weight loss diets for vegetarians fastest weight loss pills for women weight loss supplements green tea extract new diabetic medicine for weight loss ketogenic diet weight loss calculator keto weight loss diet before and after diet how many calories to lose weight

rhino 7 5000 male enhancement male enhancement for gay or bisexual how to use male enhancement patch little yellow oval pill medicine for penis enlargement pill inderfer snoop dogg my medicine medicine for sexual health 50 om pill strongest ed pill male enhancement for conception strong erection pills in south africa having sex on ecstasy pills kelnor sugar pills sex pills to not ejaculate fast male enhancement pills 5 day forecast penis enlargement cream reddit no pills no condoms just sex levlen ed pills 12 hour late to take one cheap hair growth pills

cbd rubbing oil does cbd oil reduce infamation green horizen cbd oil reviews olejek cbd cbd hemp oil gnc cbd oil and digestion dementia and cbd oil cbd hemp oil spray does cbd affect drug test taking cbd oil cbd oil used for cbd for autism spectrum does cbd help ocd cbd therapy where can i buy cbd oil in sarasota cbd mitochondria cbd oil elmira ny cbd oil for ocd reddit cbd oil for adults near me is cbd oil good for parkinsons disease