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Blue-Winged Teal
rolljack
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Arctic Refuge Headquarters in Kaktovik
rolljack
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Prescribed Burn
rolljack
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Helonias bullata, Swamp pink, siltation
rolljack
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Anhinga (Anhinga anhinga)
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Blind Ozark Cavefish Research
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rolljack
Registered: May 2008
Posts: 8,133
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The Ozark cavefish is found in small cave streams with pool areas. The water source is almost always an upwelling from the groundwater table. Suitable caves are usually found in the vicinity of large permanent streams. Over collecting and pollution are thought to be the prime factors in the decline of the Ozark cavefish. The low reproductive abilities, confined habitat, and inability to elude captors make the Ozark cavefish vulnerable to over collection. The largest Ozark cavefish populations occur in caves used by the gray bat, where the bat guano forms the cave's primary energy source. A reduction in bat numbers would likely be followed by a decline in the cavefish population.
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| · Date: Wed May 28, 2008 · Views: 52 · Filesize: 51.0kb, 73.6kb · Dimensions: 506 x 768 ·
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Credit: Hollingsworth, John and Karen/USFWS
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