Antioch Dunes NWRBy Chait S.

Jarrod V.Julia S

Mustafa T.Adam R.

Kahaan R.

Antioch dunes is a national wildlife refuge that is dedicated to the protection of the :

Langes metalmark butterfly

Contra Costa Wildflower

Evening primrose

What is Antioch dunes NWR?

● A landmark near this NWR is Lake Alhabra

● North of San Ramon● 38.1 miles or 42 minutes away

Link for map:https://maps.google.com/maps?q=antioch+dunes+national+wildlife+refuge&safe=active&ie=UTF-8&hl=en

Where is it?

● has a mediterranean/semi arid climate. Moderate rain and in summer humid. Winters are a little more dry and it doesn't rain much in winter.

● Conservations generally try to keep the population from changing seasonally, since the refuge only focuses on 3 species. Therefore the population is maintained constantly.

Species and climate

● Antioch dunes is a sand dune habitat● This NWR doesn't have any invasive

species that they know of● However, other dune habitats have

beach vitex, an invasive plant introduced to stabilize habitats

● Volunteers kill it with herbicide, since no other ways to kill it work

Habitat

● One endangered species is the Lange's Metalmark Butterfly

● This butterfly lays their eggs on a specific type of buckwheat called naked that buckwheat

● Without the naked buckwheat the butterfly will land on other plant but will not lay any eggs leading to the endangerment of the Lange’s Metalmark Butterfly. The conservationists are adding more of the naked buckwheat to the Antioch Dunes. The butterfly is a consumer level 1.

Endangered species

● A keystone species is a species which without its existence would cause the ecosystem to collapse

● The keystone species here is the naked buckwheat

● Without it the Metalmark butterfly wouldn't lay its eggs, and the whole purpose of the refuge would be destroyed.

Keystone Species

● Resources are managed with 2 priorities

● The preservation of the lange's metalmark butterfly, and the preservation of the antioch dunes evening primrose and Contra Costa wallflower.

● This NWR is not open to the public without supervision

● Researchers conduct surveys of the species annually to make sure everything is in check

Resource management

This video shows what conservationist do and how and why Antioch Dunes is a wildlife refuge.

Other media

● Their facebook page is down, however a self generated topic page is therehttps://www.facebook.com/pages/Antioch-Dunes-National-Wildlife-Refuge/103486963039394

● The facebook page explains why the NWR exists and what it is doing to help the species

● This helps our research because it offers location, and info about its species

Social Media

During a dry interglacial period some 140,000 years ago, a network a sand dunes extended from the San Joaquin River to the Mojave Desert. Today a remnant of that once-mighty swathe remains in the 71-acre Antioch Dunes National Wildlife Refuge along the southern shore of the San Joaquin River, although the industrial surroundings make for a less-than-picturesque backdrop. Human activities started about a century ago, and have lessened the impact modern day buildings have wrought on it.

History

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