Non-native fish introductions and the decline of a mountain yellow-legged frog from within protected areas
Article Abstract:
The role of introduced fishes in the decline of the mountain yellow-legged frog in California's Sierra Nevada through surveys of more than 1700 sites in two adjacent and historically fishless protected areas that differed primarily in the distribution of introduced fish is quantified. The results suggest that it happens due to the unique life history of this amphibian, which frequently restricts larvae to deeper water bodies, the same habitats into which fishes are most frequently introduced and that the decline of the frog might be relatively easy to reverse.
Publication Name: Conservation Biology
Subject: Zoology and wildlife conservation
ISSN: 0888-8892
Year: 2000
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Evaluating the effectiveness of predator control: The non-native red fox as a case study
Article Abstract:
A variety of management programs are aimed at reducing predator effects and data from a predator-controlled program, which primarily targets the introduced red fox in central California, is examined. The results indicate that the predator effect was effective in the short term but for the program to be effective in the long term it is important to redirect efforts to control juvenile and immigrant foxes.
Publication Name: Conservation Biology
Subject: Zoology and wildlife conservation
ISSN: 0888-8892
Year: 2001
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Factors affecting population assessment of desert tortoises
Article Abstract:
A study is conducted on desert tortoises in Joshua Tree National Park, California, to establish baseline population estimates and to document changes over time. The population counting of tortoise varies during the dry and wet years. Studies show that in dry years, home ranges and captures decreased, and efforts to find each tortoise nearly doubled.
Publication Name: Conservation Biology
Subject: Zoology and wildlife conservation
ISSN: 0888-8892
Year: 2000
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