Filters: Tags: M1-Invertebrates (X)25 results (132ms)
Taenia arctos n. sp.(Cestoda: Cyclophyllidea: Taeniidae) from its definitive (brown bear Ursus arctos Linnaeus) and intermediate (moose/elk Alces spp.) hosts
Harvest, Abundance, Age and Length Characteristics of Razor Clams from Eastern Cook Inlet Beaches, 1993-2003
The dragonflies (Insecta: Odonata) of Northern British Columbia: field surveys, collections development and public education 2000-2005
A large barren-ground caribou (Rangifer tarandus granti) population (the Bering Seacoast Herd) historically ranged across southwest Alaska. The size of this herd peaked in the early 1860s but declined by the late 1880s. Caribou numbers remained low in southwest Alaska for the next 100 years. Biologists have argued that periodic dispersal has been an important factor in caribou population dynamics. However, others conclude there was no credible evidence that significant interchange between herds has ever occurred in Alaska. Since 1981, we monitored 318 radiocollared caribou and documented dramatic population growth, erratic movements, shifts from traditional ranges, and changes in migratory behavior. We also documented...
Climate change and insects as a forest disturbance in the Arctic Climate change and insects as a forest disturbance in the Arctic
Range expansion and hosts of Ctenophthalmus pseudagyrtes Baker (Siphonaptera: Ctenophthalmidae) in central Alaska
Recent infestation of forest stands by spruce beetles does not predict habitat use by little brown bats (< i> Myotis lucifugus</i>) in southwestern Yukon, Canada
Diversity of Agromyzidae (Diptera) [leafmining flies] in disjunct grasslands of the southern Yukon Territory
The diversity of Agromyzidae (Diptera) associated with disjunct xeric grasslands was studied at six south-facing slopes in the southern Yukon Territory, Canada. Agromyzidae was the most diverse of 32 families of Brachycera at the sites, with 34 species (485 specimens) collected. Eight new species are described: Liriomyza nares sp.nov., Metopomyza adretana sp.nov., Phytoliriomyza depricei sp.nov., Phytoliriomyza triangulata sp.nov., Phytomyza conglomerata sp.nov., Phytomyza dioni sp.nov., Phytomyza klondikensis sp.nov., and Phytomyza takhiniensis sp.nov. Twenty previously described species were identified and six other unnamed species were represented by females only. Fourteen of the 20 previously described species...
Distribution and abundance of exotic earthworms (Oligochaeta: Lumbricidae) within the Kenai National Wildlife refuge in Southcentral Alaska
Exotic earthworms (Oligochaeta: Lumbricidae) have well-documented negative effects on forest ecosystems such as decreasing organic matter in the soil and reducing plant species richness. However, little is known about exotic earthworms in Alaska. This study seeks to document the distribution and possible limitations by soil pH and moisture for exotic earthworms within the Kenai National Wildlife Refuge (KNWR) in southcentral Alaska. We sampled a total of 70 sites near popular fishing areas, along road corridors, and in low human impact areas. Nearly all road sites (90%) and boat launches (80%) contained earthworms, while half (50%) of low human impact sites were occupied. Distance to roads was the only significant...
Butterflies of British Columbia : including western Alberta, southern Yukon, the Alaska Panhandle, Washington, northern Oregon, northern Idaho, northwestern Montana
"Butterflies are found everywhere in British Columbia, from balcony planter boxes in the city to the vast, unexplored expanses of boreal forest and mountains across the north, and from coastal bogs and wild ocean shorelines to the deserts of the southern interior. The total known fauna of butterfly species in BC is by far the largest and most diverse in Canada." "Butterflies of British Columbia summarizes all available information on the butterflies of BC. The 187 species and 264 subspecies of butterflies known from BC, as well as 9 additional hypothetical species, are discussed with descriptions of identifying features, immature stages, larval foodplants, biology and life history, range and habitat, and conservation...
Relationship between spruce beetle and Inonotus tomentosus in sub-boreal forests of British Columbia