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Tijuana Slough National Wildlife Refuge is located in the most southwestern corner of the contiguous United States. It is part of the San Diego National Wildlife Refuge Complex. It was established in 1980.〔(NWR planning document )〕 The slough is one of southern California's largest remaining salt marshes without a road or railroad trestle running through it. This important salt marsh is surrounded by San Diego County and Tijuana, Mexico, with a population of 4.3 million people. Within this international bioregion, the refuge maintains essential habitats for many migrating shorebirds and waterfowl along the Pacific Flyway.〔(Refuge website )〕 Tijuana Slough provides critical habitat for the federally listed endangered California least tern (''Sterna antillarum browni''), light-footed rail (''Rallus obsoletus levipes'') and least Bell's vireo (''Vireo bellii pusillus''), as well as the salt marsh bird's-beak (''Cordylanthus maritimus maritimus''), an endangered plant species. Designated as a Globally Important Bird Area by the American Bird Conservancy, over 370 species of birds have been sighted on the refuge.〔(Refuge profile )〕 The refuge's habitat and wildlife management programs focus on the recovery of endangered species through research, habitat restoration, and environmental education. The refuge is part of a larger unit called the Tijuana River National Estuarine Research Reserve, which is administered by the National Oceanographic and Atmospheric Administration. The Tijuana Reserve is one of 22 National Estuarine Research Reserves created nationwide to enhance scientific and public understanding of estuaries, and thereby contribute to improved estuarine management. ==See also== * Tijuana River Estuary 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Tijuana Slough National Wildlife Refuge」の詳細全文を読む スポンサード リンク
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