Highest_priority_cards_15_-_all_duplicates Flashcards
Q: List some local species the SFZA has been involved in conserving.
Yosemite toad
Western Pond Turtle
San Francisco forktail damselfly
Sierra Nevada Mountain yellow-legged frog
California red-legged frog
San Francisco garter snake (no details on slides)
Pacific chorus frog (Mountain Lake in Presidio, no details on slides)
Q: Yosemite toad
Status: VU
Range/Habitat: Central Sierra Nevada, fragmented populations
Threats:
-Habitat degradation (climate change), and to a lesser extent, chytrid fungus.
-High embryonic mortality due to drying up of shallow ephemeral waters.
-Also wildfires.
Cons:
-Head start and reintroduction projects.
-SFZA working with Yosemite N.P. to restore the Yosemite toad to its native habitat.
-SFZA is only institution rearing YT for release, and only one with them on exhibit.
-(Displayed in the Exploration Zone.)
Q: Western Pond Turtle:
Status: VU
Range/Habitat: wetlands and slow moving freshwater in CA, WA, OR.
Threats:
-Habitat degradation and disease.
Cons:
-SFZA manages the WPT SAFE
-Head start and reintroduction projects (working with NPS to reestablish in Marin Headlands.
-Researching shell fungal disease.
Q: San Francisco forktail damselfly
Status: EN, rarest odenate
Range/Habitat: Extremely fragmented wetland areas in urbanized localities in Marin, SF, and San Mateo counties.
Threats:
-Lack of quality habitat in already small range.
Cons:
-Head start and reintroduction.
-Partnership w/Presidio Trust to capture, breed, and release into (newly restored) Mountain Lake in Presidio.
- Released 12k in key areas, e.g., Mountain Lake and Crissy Field
Value:
-Indicator species
-Dragonflies and damselflies are predators as both nymphs and adults, feeding on a variety of prey including nuisance species such as mosquitoes and biting flies.
Q: Sierra Nevada Mountain yellow-legged frog
Status: VU
Range/Habitat: Lakes, ponds, marshes, streams in SN mountains
Threats:
-Habitat degradation, disease (chytrid fungus), introduced species.
-Had been expunged from Tahoe lakes by introduced non-native fish, which eat their eggs.
Cons:
-SFZA established the MYLF conservation program: testing, experimental immunization for Bd, captive rearing and reintroduction.
-Has released over 2000 juveniles to date.
-Partnered with US Forest Service, California Department of Fish and Wildlife, wildlife researchers, and others for above program.
Q: California red-legged frog
Status: NT
Range/Habitat: Near permanent bodies of water in CA
Threats:
-Habitat degradation
Cons:
-Head start and reintroduction into area where they’d been extirpated. 3000 juvenile frogs released. SFZA is first facility to do this at large scale. Working w/Yosemite National Park.
Value:
-Preferred prey for (EN) SF Garter snake
-Indicator species
Q: SFZA is working with Yosemite National Park to reintroduce which species?
Yosemite toads, CA red-legged frogs, Western pond turtle (now working with NPS in Marin Headlands)
Q: Local animals helped by SFZA head start program(s)?
Western pond turtle
CA red-legged frog
SF forktail damselfly
Yosemite toad
Sierra Nevada mountain yellow-legged frog
Q: Head start program vs. in situ stats.
Wild:
2,500 eggs -> 2200 tadpoles -> 10 juveniles -> 2 adults
Head start:
2,500 eggs -> 2200 tadpoles -> 1600 juveniles -> 1500 Adults
Q: List the conservation status of some local species the SFZA has been involved in conserving.
Yosemite toad - VU
Western Pond Turtle - VU
San Francisco forktail damselfly - EN
Sierra Nevada Mountain yellow-legged frog - VU
California red-legged frog - NT
San Francisco garter snake (no details on slides) - EN (?)
Pacific chorus frog (Mountain Lake in Presidio, no details on slides) - LC
