Travis / Williamson Counties Karst Zones
收藏US Fish and Wildlife Service Open Data2026-03-28 收录
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https://gis-fws.opendata.arcgis.com/datasets/fws::travis-williamson-counties-karst-zones
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资源简介：
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</font><p style='margin: 0in 0in 8pt;'><font color='#000000' face='Calibri' size='3'>In 1992, four endangered species habitat and management
zones in the Austin region were delineated for the USFWS by George Veni and
Associates. Those zones were defined as:</font></p><font color='#000000' size='3'>
</font><div style='margin: 0in 0in 8pt;'><ul><li><font color='#000000' face='Calibri' size='3'>Zone 1: areas known to contain endangered cave fauna</font></li><li><font color='#000000' face='Calibri' size='3'>Zone 2: areas having a high probability of suitable habitat
for endangered or other endemic invertebrate cave fauna (refined now to only
endangered cave fauna)</font></li><li><font color='#000000' face='Calibri' size='3'>Zone 3: areas that probably do not contain endangered cave
fauna; and</font></li><li><font color='#000000' face='Calibri' size='3'>Zone 4: areas which do not contain endangered cave fauna.</font></li></ul></div><p><font color='#000000' face='Calibri' size='3'>Zone boundaries were updated in 2007 to reflect more recent studies of cave and karst development and the most current biological information available on the distribution of listed and non-listed troglobite species. For more information on listed karst invertebrates in Texas, see <a href='https://www.fws.gov/southwest/es/AustinTexas/ESA_Sp_KarstInverts.html'>https://www.fws.gov/southwest/es/AustinTexas/ESA_Sp_KarstInverts.html</a>.</font></p><font color='#000000' size='3'>
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提供机构：
U.S. Fish & Wildlife Service
