24. Marbled Murrelet Case Study

24. Marbled Murrelet Case Study - Marbled Murrelet...

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Marbled Murrelet ( Brachyramphus marmoratus )
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Taxonomy: Family Alcidae (the Auks) Auklets, Murres, Puffins, Guillemots, Murrelets Dovkies
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Marine Foragers Terrestrial Breeders
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Terrestrial Threats
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Marine Threats
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Current OG Historic OG US federally threatened Not listed Canadian Species at Risk Range and Distribution
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Population Trend in Washington to Northern California
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Nesting Habitat and Population Size
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Is Habitat Loss Causing Declines? Annual population decline is 4%, but only 1.3% of nesting habitat is lost every year No population declines in Oregon despite the biggest loss of nesting habitat Most nesting habitat in California was lost 100 years ago
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P = 0.996
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P = 0.613
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P = 0.449
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Half Moon Bay Santa Cruz Detailed Studies in Central California
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Measure reproductive success with the ratio of juvenile to adults birds observed during at-sea surveys Juvenile Ratio = # of Juveniles # of Adults
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This note was uploaded on 12/17/2011 for the course ZOO 360 taught by Professor Staff during the Fall '08 term at Wisconsin.

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24. Marbled Murrelet Case Study - Marbled Murrelet...

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