important in whitebark pine restoration efforts; managers need to add planting to this critical reforestation process. So why does this matter? Bears Bears pillage the ground burrows (middens) of the Red squirrels in order to obtain the high nutrient seeds. Bears then raid the middens consuming the nutritious seeds as primary source of pre-hibernation food. Seeds from whitebark pine are a frequent food for grizzly bears during mid-August through late September and, occasionally, in spring when seed production in the previous fall was high (Mattson et al. Some seeds simply pass through the bears and are deposited with a healthy mound of natural fertilizer far from their original location, improving genetic diversity and allowing the whitebark to “move” farther than it ever could on its own. Whitebark pine seeds are a fall staple for Yellowstone grizzlies, which rely on them (in part) ahead of the breeding and hibernation season. The whitebark pine trees are key producers in the Yellowstone ecosystem. All the things a grizzly bear needs to grow healthy and strong, all packed into one food source. And what does it have to do with grizzly bears? Explain your prediction. As it turns out, the seed cones of the whitebark pine are extremely rich in protein, fats, and carbohydrates. cies of bear viewing opportunities from 1990–2004 to an index of whitebark pine (Pinus albicaulis) cone abundance, a highly preferred bear food resource found in forested cover types not readily visible from Park roads. Grizzly bears that discover whitebark pine seeds will likely have a positive experience with that food resource, and they will therefore seek that habitat type again. Whitebark Pine seeds (pine nuts) can form another important spring food. October: Most bears enter their dens and begin a light hibernation. Black and grizzly bears desire these seeds as they are exceedingly nutritious, high in protein and easily digested. The Clark's Nutcracker, a mountain bird, can store up to 100,000 seeds … The whitebark pine trees are key producers in the Yellowstone ecosystem. Pine seeds are especially important to females who need to sustain themselves and their offspring during hibernation and post-hibernation lethargy. Response of Grizzly Bears to Changing Food Resources in the Greater Yellowstone Ecosystem. Tree Profile: Whitebark Pine. Walking through a whitebark pine forest in early fall, it is impossible not to feel a sense of awe. In years of lower cone production, bears tend to range farther in search of alternative food sources. In contrast, black bears have short, curved claws that are better for climbing than for digging so they eat less seeds and roots. Behavior, biochemistry, and hibernation in black, grizzly, and polar bears. Cubs born last winter will share their mother’s den.

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