We found caribou in intricate tracks woven across the landscape, in bits of hair left behind in birch boughs and in willows stripped bare. This gives us closest to true estimates of how much plant matter (caribou food) exists in each place.However, these measurements are small points on a large landscape. I am particularly excited about new technology that can help us map plant matter (“above-ground biomass”) across the entire region. And finally, we found caribou in the flesh, outrunning two wolves, where the Yukon and Northwest Territories meet.Rachel (left) and Kayla Arey (right) soak in our first caribou sighting as summer winds down in the Arctic. Caribou serve as nutritional as well as cultural sustenance for certain communities. Caribou use many different habitats—from the boreal forests of central Alaska to the flat plains of the Yukon North Slope—and our field sites reflect this variety.At each site, the drone buzzed overhead on a pre-programmed flight, taking detailed photos I’ll use to classify plant cover and create 3D models of vegetation and topography.Meanwhile, we scurried about on the ground, getting our hands dirty measuring vegetation cover and height, then meticulously harvesting and bagging vegetation.Eventually, the midnight sun started dipping below the horizon and the arctic summer sputtered out. Photos: Katie Orndahl and Aerin Jacob.I am a PhD student at Northern Arizona University. But the landscape remained still and the disappointment palpable.At Imniarvik Base Camp we missed the herd again. Photo: Aerin Jacob. Defeated, the wolves slowed to a stop and slumped into the grass. My collaborators and I study how millions of migrating caribou interact with their environment: the habitat selection choices the caribou make, as well as the impacts they impart on the landscape. 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. Not only are these images beautiful, but they also act as a bridge between fine-scale field data and satellite images that cover the whole globe, but contain less detail. But the landscape remained still and the disappointment palpable. More...The Narwhal is ad-free, non-profit and supported by readers like you.Northern Arizona University PhD student Katie Orndahl studies how millions of migrating caribou interact with their changing environment,Katie (left) and Rachel (right) carefully recording vegetation species, cover, and height on line transects. Caribou movements and activities followed similar annual patterns in both herds, with highest rates in midsummer and lowest in midwinter. Like climate change itself, migratory animals such as caribou do not recognize international geo-political borders and the research needed to study the relationship between climate change and animals crosses many countries.The potential changes in caribou distribution will affect communities that have a cultural and nutritional reliance on caribou. Porcupine and Central Arctic Caribou (Rangifer tarandus) Herds from 1985 to 1990. On warm, still days during the summer migration, even mosquitoes can become micro-predators as they drain blood and drive the caribou to distraction and injury. My colleague pointed into the distance as two small white dots appeared beside the unsuspecting caribou. Given concerns about the George River Herd, the Ministry stopped its seasonal publishing in November 2010.Since August 2014, the maps show the distribution area of the Leaf River Herd during a given period and no longer show the location and movement of individual animals.Although the sample of caribou fitted with a telemetric collar is an overall representation of the population,Caribou Migration Monitoring by Satellite Telemetry. Alaska — Due to climate change, some communities in rural Alaska and the Yukon Territory of Canada may face a future with fewer caribou according to new research published by the U.S. Geological Survey and the University of Alaska, Fairbanks in the recent issue of PLoS ONE.ANCHORAGE, Alaska — Due to climate change, some communities in rural Alaska and the Yukon Territory of Canada may face a future with fewer caribou according to new.Warming temperatures will increase the flammability of lichen-producing boreal forests, which are important winter habitat for caribou herds. Not only are these images beautiful, but they also act as a bridge between fine-scale field data and satellite images that cover the whole globe, but contain less detail. My collaborators and I study how millions of migrating caribou interact with their environment: the habitat selection choices the caribou make, as well as the impacts they impart on the landscape. The Porcupine caribou or Grant's caribou (Rangifer tarandus granti) is a subspecies of the reindeer (or the caribou in North America) found in Alaska, United States, and adjacent parts of Canada. Working in groups, design your range map on a piece of paper using the maps of the caribou migration range. Photo credit: Katie Orndahl

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