Nutrient dynamics of the southern and northern BOREAS boreal forests

Frost Crack Incidence in Northern Hardwood Forests of the Southern Boreal–North Temperate Transition Zone

in the second-growth stands. In addition, because primary and second-growth northern hardwood stands often differ in overstory structure or composition (Goodburn and Lorimer 1999, Hale et al. 1999, McGee et al. 1999, Crow et al. 2002), we hypothesized (2) that %FC would be associated with differences in structural attributes between the two stand types.

Instream Movements by Boreal Toads (Bufo boreas boreas)

27 Twitty 1940; Nussbaum 1969). Our observations suggest that hyporheic zones might provide important and not previously recognized habitats for amphibians in intermittent headwater streams. Additional sampling is needed to better characterize hyporheic use by Dicamptodon and other stream amphibians such as the torrent salamanders (Rhyacotriton spp.). Better information notwithstanding, managem...

Population limitation of the northern red-backed vole in the boreal forests of northern Canada.

1. Across the vast boreal forests of North America, no population cycles in Clethrionomys species occur. In Eurasia, by contrast, some Clethrionomys populations of the same species undergo regular 3-5-year cycles. We examined the effects of nutrients, food, competitors, predators and climate on population limitation in the northern red-backed vole (Clethrionomys rutilus Pallas) in the south-wes...

Investigation of Batrachochytrium Dendrobatidis in Four Boreal Toad (Bufo Boreas Boreas) Populations in Wyoming

the study of bright and surface discrete cavity solitons dynamics in saturable nonlinear media

امروزه سالیتون ها بعنوان امواج جایگزیده ای که تحت شرایط خاص بدون تغییر شکل در محیط منتشر می-شوند، زمینه مطالعات گسترده ای در حوزه اپتیک غیرخطی هستند. در این راستا توجه به پدیده پراش گسسته، که بعنوان عامل پهن شدگی باریکه نوری در آرایه ای از موجبرهای جفت شده، ظاهر می گردد، ضروری است، زیرا سالیتون های گسسته از خنثی شدن پراش گسسته در این سیستم ها بوسیله عوامل غیرخطی بوجود می آیند. گسستگی سیستم عامل...