pacific lamprey master distributions
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::pacific-lamprey-master-distributions
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<div><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>Date: December 2020</span></div><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>Summary: The Pacific lamprey has inhabited the rivers, streams and coastal waters of the west for 350 million years (BPA, 2005). These data describe areas of known distribution (this dataset is limited to Oregon, Washington and Idaho) currently and historically used by Pacific Lamprey. Pacific Lamprey, Entosphenus tridentata are native to the Pacific coast from Baja California to the Bering Sea. They are anadromous, migrating from their natal stream to the ocean and back, but unlike salmon, Pacific Lamprey spend well over half of their total life cycle in freshwater. </span><div><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>Distribution data is mapped at a 1:24,000 scale and are based on the StreamNet Hydrography dataset. </span><div><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>Type: ArcGIS Feature Layer </span><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>View for Pacific Lamprey StoryMap. Only showing streams for Pacific Lamprey, Unknown lamprey streams not shown in this view</span></div><div><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>Reason: Public outreach </span></div><div><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>Scale: Web </span><div><span style='font-family:"Avenir Next W01", "Avenir Next W00", "Avenir Next", Avenir, "Helvetica Neue", sans-serif; font-size:16px;'>Source: </span><font><span style='font-size:16px;'>Columbia River Fish and Wildlife Conservation Office curated the data from multiple sources (see metadata).</span></font></div></div></div>
提供机构：
U.S. Fish & Wildlife Service
