Parallel Models of Animal Migration in Northern Yellowstone National Park
نویسندگان
چکیده
In landscape ecology, computer models are developed to simulate the migration of animal groups as they exist in nature. Typically, these models are sequential, and the animal groups move and forage in sequence. In this work, we discuss a parallel implementation of the NOYELP (NOrthern YELlowstone national Park) model on a 32-processor Thinking Machines CM-5. NOYELP is a spatially-explicit individual-based model that simulates the search, movement and foraging activities of groups of animals across the northern portion of Yellowstone National Park. NOYELP is primarily used to study the eeects of re scale and pattern on the winter foraging dynamics and survival of free-ranging bison and elk groups. Separate versions of a parallel NOYELP model (referred to as PNOYELP) with diierent degrees of data-sharing and message-passing are used to study the eeects on travel distances and semi-annual energy gain statistics. Comparisons of these statistics with the sequential NOYELP model are made, and reasonable speed improvements (ranging from 2:8 to 6:7) for PNOYELP on the CM-5 over the sequential model on a Sun SPARCstation 10 are reported.
منابع مشابه
Predicting Bison Migration out of Yellowstone National Park Using Bayesian Models
Long distance migrations by ungulate species often surpass the boundaries of preservation areas where conflicts with various publics lead to management actions that can threaten populations. We chose the partially migratory bison (Bison bison) population in Yellowstone National Park as an example of integrating science into management policies to better conserve migratory ungulates. Approximate...
متن کاملEnvironmental change and the evolution of migration.
Bergerud, A., H. Butler, and D. Miller. 1984. Antipredator tactics of calving caribou: dispersion in mountains. Canadian Journal of Zoology 62:1566–1575. Chapman, B. B., C. Brönmark, J. Å. Nilsson, and L. A. Hansson. 2011. The ecology and evolution of partial migration. Oikos 120:1764–1775. Creel, S., D. Christianson, S. Liley, and J. A. Winnie, Jr. 2007. Predation risk affects reproductive phy...
متن کاملWolves, Elk, Bison, and Secondary Trophic Cascades in Yellowstone National Park
Wolves were reintroduced into Yellowstone National Park in 1995/96, likely reestablishing a trophic cascade involving wolves, elk, and woody browse species. The return of wolves may have also triggered a secondary trophic cascade involving bison, which are generally a minor prey species for wolves in northern Yellowstone. We hypothesize a sequence of events in northern Yellowstone where: 1) wol...
متن کاملBerry-producing shrub characteristics following wolf reintroduction in Yellowstone National Park
Gray wolves (Canis lupus) were reintroduced into Yellowstone National Park in 1995–96, thus completing the park’s large predator guild. In the fall of 2010, approximately 15 years after wolf reintroduction, we sampled ten genera/species of berry-producing shrubs within 97 aspen (Populus tremuloides) stands in the park’s northern ungulate winter range. Regression analysis indicated shrub heights...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- IJHPCA
دوره 9 شماره
صفحات -
تاریخ انتشار 1995