Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Mark W. Oswood"'
The boreal forest is the northern-most woodland biome, whose natural history is rooted in the influence of low temperature and high-latitude. Alaska's boreal forest is now warming as rapidly as the rest of Earth, providing an unprecedented look at ho
Autor:
S. Smidt, Mark W. Oswood
Publikováno v:
Hydrobiologia. 468:95-105
We investigated spatial variability in the community structure of stream macroinvertebrates at six reaches within Caribou-Poker Creeks Research Watershed in the Alaskan taiga forest. Stream reaches differed most notably in river continuum position (s
Publikováno v:
Journal of the North American Benthological Society. 19:405-418
We examined the spatial distributions of Alaskan freshwater fishes using 2 frameworks, ecoregions and hydroregions (catchments). Ecoregions are defined by climate, terrain, vegetation, and soils; their utility in explaining distributions of aquatic o
Publikováno v:
Biogeochemistry. 47:239-267
Understanding interactions between permanently frozen soils and stream chemistry is important in predicting the effects of management, natural disturbance and changing perma- frost distribution on stream ecosystems and nutrient budgets in subarctic w
Autor:
Alexander M. Milner, Mark W. Oswood
Alaska's great size is mirrored by the large number and diversity of its freshwater ecosystems. This volume reviews and synthesizes research on a variety of Alaskan freshwaters including lakes, rivers and wetlands. The vast range of Alaskan habitats
Publikováno v:
BioScience. 48:104-108
E cologists usually study systems at spatial and temporal scales (e.g., from centimeters to meters and from minutes to days) that are within easy range of human perception. Critical ecological processes, however, occur over a range of spatial and tem
Publikováno v:
Freshwater Biology. 32:401-411
SUMMARY 1. Forest stream food webs depend largely on input of dead riparian zone leaves for their energy, which is converted into living biomass by microbes, macroinvertebrates and fish. 2. Temperature has been invoked as important in controlling bre
Publikováno v:
Canadian Journal of Zoology. 71:98-108
Freshwater invertebrates of northern regions are faced annually with freezing of shallow habitats. Several responses to habitat freezing are possible, including migration to favorable habitats and physiological adaptations such as freeze-avoidance or
Autor:
John G. Irons, Mark W. Oswood
Publikováno v:
Hydrobiologia. 237:147-157
We investigated the thermal ecology of three Alaskan streams. Monument Creek (MC) and Little Poker Creek (LPC) are subarctic streams in interior Alaska; LPC is in a permafrost-dominated valley. Imnavait Creek (IC) is an arctic tundra beaded stream in
Publikováno v:
Annals of the Entomological Society of America. 84:239-247
Chloroperla ovibovis Ricker is removed from Chloroperla and placed in a new monotypic genus Alaskaperla , and first descriptions of its eggs and nymphs are provided. Vein A2 of the forewing is unbranched, unlike all other North American Chloroperlina