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Marin Islands Natural Wildlife Reserve
Transcript of Marin Islands Natural Wildlife Reserve
The Marin Islands National Wildlife Refuge is about 51 miles or 57 minutes away from DVHS.
It's in the north western direction and it's 20 minutes away from the Landmarks Art and Garden Center.
Resources are managed by:
Not letting humans onto the heron and egret breeding area. Because of this, the refuge is NOT open to the public.
A company called Audubon Canyon Ranch monitors the number of nesting herons and egrets at the refuge. They do this annually, and they have been monitoring it since 1993. It is part of an ongoing study of heron and egret colonies in the northern San Francisco Bay Area.
California Slender Salamander
There are marshes, tidelands, forests, prairies and coastal shrubs.
Invasive weeds threaten the native species on Marin Islands.
Volunteers help remove invasive species and restore native ones.
This lizard's natural habitat ranges from the coast of San Diego to the east of the crest of the Sierra Nevada. It prefers sandy soil. Like many other lower level carnivores, it hunts and is hunted by tertiary hunters. It preys mostly on smaller insects like ants, but also spiders and bees.
Blainville's Horned Lizard (Phrynosoma Blainvillii)
Coast Range Fence Lizard
View of both East and West Marin Islands.
Northwest view of West Marin Island.
I really appreciate the hard work that goes into preserving the biodiversity of SF Bay.
Many species of birds are present on the Marin Islands. The Marin Islands are home to many species of egrets and herons.
Since this refuge is on the Northern side of the Equator, almost all birds here migrate.
Temperatures affect the amount of wetlands.
During Winter, birds may stay in their breeding areas if the water remains open.
Spring migration occurs during February and May.
Birds usually occupy their summering grounds until September.
I think preserving the refuges is very important because there's not many places that still have so much natural wildlife and biodiversity in the Bay Area.
The Marin Islands were controlled by the coast Miwok Indians until the 1800's.
Excavations of East Marin Island (1992) with carbon dating found evidence of habitation in 210 A.D.
Chief Marin sought refuge on the Marin Islands in 1824 while fleeing from the Mexicans.
Despite his efforts the Marin Islands still were taken under mexican control by General Vallejo.
Ownership of the islands was given to the U.S after the Mexican/American War.
Later on the islands were bought in auction by the Crowley family in 1926.
In 1992 the islands were sold to the "Friends of the Marin Islands" for 1 to 3 million dollars.
Given to the federal government in summer of the same year, and the western part turned into a State Wildlife Refuge.
Striped Bass live in the Bay Area and by coastlines. They can lay up to 180,000 eggs in one breeding season.
It is not known where this species first originated, but is possible that it had already been in San Francisco from the start.
Much about them is unclear to the biologists in the area, but we do know that Striped Bass lay their eggs in rivers and not in the bay.
These fish carry parasites called pacific lamprey, eel like worms that sucks the body fluid off the fish. It is sometimes fatal.
Presented by: Rachel Lin, Bill Hwang, Andrew Lu, Nicholas Keefer, and Jacquelin Ho from Period 2
Thank you for all your efforts, I hope you continue to maintain public awareness about the environment here in the Bay Area.
What's so unique about the Marin Islands?
Keeping the environment healthy will help save many species! I agree that preserving biodiversity is important.
Thank you for putting a lot of effort onto protecting the environment and all the species that live in this area.
Google Maps. N.p., n.d. Web. 29 Sept. 2013. <http://maps.google.com/>.
Ray, Captaln. "THE MARIN ISLANDS." Bay Crossings. Bay Crossing, Apr. 2012. Web. 07 Oct. 2013. <http://www.baycrossings.com/dispnews.php?id=2724>.
Luby, Edward M. "Excavations at East Marin Islands." N.p., 1992. Web. 6 Oct. 2013. <http://www.scahome.org/publications/proceedings/Proceedings.07Luby.pdf>.
Kelly, Johhn P., Binny Fischer, and T. Emiko Condeso. "Heron and Egret Monitoring Results at Marin Islands National Wildlife Refuge: 2012 Nesting Season." Audubon Canyon Ranch. Cypress Grove Research Center, Audubon Canyon Ranch, Dec. 2012. Web. 4 Oct. 2013. <http://www.egret.org/sites/default/files/scientific_contributions/wmi_report_2012.pdf>.
Pictures courtesy of californiaherbs.com