Resilience of anostracan cysts to fire |
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Authors: | Wells Michael L Hathaway Stacie A Simovich Marie A |
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Institution: | (1) Department of Geography, San Diego State University, 300 Campanile Drive, San Diego, CA 92181-5200, USA;(2) Biology Department, University of San Diego, 5998 Alcala Park, San Diego, CA 92130, USA |
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Abstract: | California's Mediterranean ecosystems include shrubland and grassland vegetation types that are fire-prone. Dotted within
this landscape are ephemeral wetlands called vernal pools. Since surrounding upland vegetation is adapted to survive fire,
it is expected that vernal pool organisms should be able to survive as well. One group of animals common to vernal pools are
anostracan crustaceans that survive the pool's dry period as encysted embryos. We hydrated anostracan cysts from the soil
of a recently burned pool and from soil samples intentionally burned in a prescribed fire. We also sampled burned pools when
refilled the next rainy season. We found that anostracan cysts in the soil can survive fire and that shrimp occur in pools
in the first post-burn season. This information is important from a management perspective concerning fire effects, controlled
or natural, on vernal pools and their rare and endangered species.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | Anostracans ephemeral pools fire Mediterranean-type ecosystems |
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