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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...
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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...
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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...
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"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...


map background search result map search result map Monitoring and modeling terrestrial arthropod diversity on the Kenai National Wildlife Refuge Mountain Pine Beetle in British Columbia Climate change and insects as a forest disturbance in the Arctic Climate change and insects as a forest disturbance in the Arctic Relationship between spruce beetle and Inonotus tomentosus in sub-boreal forests of British Columbia Dragonflies at Risk in British Columbia Diversity of Agromyzidae (Diptera) [leafmining flies] in disjunct grasslands of the southern Yukon Territory Butterflies of British Columbia : including western Alberta, southern Yukon, the Alaska Panhandle, Washington, northern Oregon, northern Idaho, northwestern Montana The dragonflies (Insecta: Odonata) of Northern British Columbia: field surveys, collections development and public education 2000-2005 Toward a Diatom Biological Monitoring Index for Cook Inlet Basin, Alaska, Streams INFLUENCE OF POPULATION GROWTH ON CARIBOU HERD IDENTITY, CALVING GROUND FIDELITY, AND BEHAVIOR Spruce beetle and the forests of the southwest Yukon Dynamics of phytophagous insects and their pathogens in Alaskan boreal forests Long-term change in limnology and invertebrates in Alaskan boreal wetlands Harvest, Abundance, Age and Length Characteristics of Razor Clams from Eastern Cook Inlet Beaches, 1993-2003 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 Butterflies Recorded on Flattop Mountain, Anchorage, Alaska Distribution and abundance of exotic earthworms (Oligochaeta: Lumbricidae) within the Kenai National Wildlife refuge in Southcentral Alaska Butterflies Recorded on Flattop Mountain, Anchorage, Alaska Monitoring and modeling terrestrial arthropod diversity on the Kenai National Wildlife Refuge Distribution and abundance of exotic earthworms (Oligochaeta: Lumbricidae) within the Kenai National Wildlife refuge in Southcentral Alaska Diversity of Agromyzidae (Diptera) [leafmining flies] in disjunct grasslands of the southern Yukon Territory 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 Long-term change in limnology and invertebrates in Alaskan boreal wetlands Toward a Diatom Biological Monitoring Index for Cook Inlet Basin, Alaska, Streams Harvest, Abundance, Age and Length Characteristics of Razor Clams from Eastern Cook Inlet Beaches, 1993-2003 Spruce beetle and the forests of the southwest Yukon 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 INFLUENCE OF POPULATION GROWTH ON CARIBOU HERD IDENTITY, CALVING GROUND FIDELITY, AND BEHAVIOR Dynamics of phytophagous insects and their pathogens in Alaskan boreal forests Butterflies of British Columbia : including western Alberta, southern Yukon, the Alaska Panhandle, Washington, northern Oregon, northern Idaho, northwestern Montana Mountain Pine Beetle in British Columbia Relationship between spruce beetle and Inonotus tomentosus in sub-boreal forests of British Columbia Dragonflies at Risk in British Columbia The dragonflies (Insecta: Odonata) of Northern British Columbia: field surveys, collections development and public education 2000-2005