porcupine caribou herd location

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The Porcupine Caribou (Rangifer tarandus) Herd has consistently calved at high densities on the coastal plain of the Arctic National Wildlife Refuge. It shows that the Dophin and Union herd has declined to an estimated 4,105 in 2018, down from 17,000 in 2015. The Porcupine Caribou Herd, at nearly 170,000 strong, migrates throughout the Refuge and northwestern Canada. Caribou populations fluctuate constantly. The original range map was drawn by Fran Mauer, USFWS - Arctic Refuge, based on radio-telemetry locations and historic knowledge of movements of the herd. This incredible journey takes them through what is still a significantly intact landscape of the Arctic. By late June, the herd swells to nearly 200,000 animals and we regularly see thousands and even tens of thousands of caribou climbing tundra ridges … Porcupine caribou mother and calf, by Peter Mather. Isolated dispersals, such as movements into the Central Arctic herd area to the west, were not factored into the map. Arctic caribou are generally smaller in body size than caribou of the interior and Alaska Peninsula. The Dophin and Union herd is unique, being neither barren-ground nor Peary caribou. The Porcupine herd is estimated around 100,000 in population. The Central Arctic population is estimated around 30,000. Pregnant females come to the unprotected coastal plain of the Refuge to give birth in late May and early June. The Porcupine is the only barren-ground caribou herd across the north that is not in steep decline. Every year, the Porcupine caribou herd embarks on the longest land mammal migration in the world, covering over 2400 kilometers from the Northwest Territories, Yukon and into Alaska. The 200,000-strong porcupine caribou herd complete the longest known mammal migration on the coastal plain, where they give birth to 40,000 calves in the first week of June every year. The animal that has most come to symbolize the Refuge is the caribou. My journey, it turns out, would trace the migration route of the Porcupine caribou herd, linking boreal forest and arctic tundra ecosystems unlike any other northern mammal. Knowing where caribou migrate has immediate practical value for analyzing something like whether the Porcupine Caribou Herd passes through a potential oil exploration site in … Since 1979, the Porcupine herd has grown steadily at a rate of … This is one of the healthiest herds in Alaska with its numbers pushing 218,000. Each and every summer the Porcupine Caribou herd congregates in northern Alaska for one of the world’s most inspiring wildlife migrations. Calf survival is lower when calving is displaced from this area. This layer displays the approximate range of the Porcupine Caribou Herd. Caribou are a member of the deer family and they share common traits. The Caribou, Rangifer taradus, is among of the most majestic creatures of the Arctic.The arctic caribou is highly prized as an Alaskan game species. We were here to photograph and film this exceptional event, but nature lobbed us a surprise this year. Caribou Hunts. This 49 page (in English) report contains executive summaries in Inuktitut (both syllabics and western orthography). The wild landscape I traveled forms the northern extent of the North American Cordillera, one of the last intact mountain ecosystems on Earth. We hunt the Porcupine River caribou herd during its fall migration. Porcupine caribou herd This area for possible future oil drilling on the coastal plains of the Arctic National Wildlife Refuge, encompasses much of the Porcupine caribou calving grounds. The wild landscape I traveled forms the northern extent of the Arctic National wildlife Refuge member. Herd area to the unprotected coastal plain of the North American Cordillera, one of the interior and Alaska.. Photograph and film this exceptional event, but nature lobbed us a surprise this year surprise year... 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