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Describes a project to identify non-native plants in Alaska, to determine which of these plants pose the greatest threat to native ecosystems, and to conduct field surveys in Susitna, Matanuska, and Copper River basins, which are considered ecologically disturbed. This data was used in part to populate the AlaskaExotic Plant Information Clearinghouse (AKEPIC) database
Northern pike (Esox lucius) were introduced to the northern Susitna Basin of south-central Alaska in the 1950's, and have since spread throughout the upper Cook Inlet Basin. It is hypothesized here that invasive pike remodel the ecology of lakes in this region by removing vulnerable prey types. Trends in invasive diet suggest that pike switch to macroinvertebrate prey as fish prey are eliminated. Impacts of pike introduction were studied in detail for one species of resident fish, the threespine stickleback ( Gasterosteus aculeatus) to test hypotheses that invasive pike predation both reduces stickleback abundance and drives evolution of trophic and armor morphology in surviving populations. Stickleback abundance...
Ambermarked birch leafminer, Profenusa thomsoni (Konow) (Hymenoptera: Tenthredinidae), is an exotic, invasive pest of urban and wildland birch, Betula spp., in portions of North America. Profenusa thomsoni was first reported in the eastern United States in the early 1900s and has spread rapidly throughout the northern United States and Canada (MacQuarrie et al. 2007, Can. Entomol. 139: 545 - 553). The most likely mode of introduction was overwintering pupae present in the root balls of horticultural stock imported from Europe (Digweed and Langor 2004, Can. Entomol. 136:727 - 731), although this has not been documented. In Alaska, 3 exotic birch leaf mining sawflies have been found in recent years with the most significant...
Aquatic Invasive Species (AIS) are of increasing national and international concern. Rainbow Trout are considered to be an Invasive Species in many countries. It is not native to the Upper Yukon River Basin. In 2013 we conducted a literature review of the introduction of Rainbow Trout to the Upper Yukon River Basin and a field program to determine the species introduction and present distribution. We found the pathway of introduction was a successful introductionto Jackson Lake in the 1950’s. By the 1960s the species had colonized downstream as far as McIntyre Creek. In the 1970s it was reported from the Yukon River. In the 1990s it was documented in Croucher Creek, a tributary of the Yukon River downstream of McIntyre...
map background search result map search result map BAER Final Report; Invasive Plant Monitoring Following 2004 Fires. USFWS National Wildlife Refuges – Alaska Region. Prepared for the U.S. Fish and Wildlife Service- Alaska Regional Office BLM-BAER Final Report. Invasive Plant Species Monitoring and Control: Areas Impacted by 2004 and 2005 Fires in Interior Alaska. A survey of Alaska BLM lands along the Dalton, Steese, and Taylor Highways The impact of invasive sweetclover (Melilotus alba) in early-successional floodplain habitats of Alaska The impact of invasive sweetclover (Melilotus alba) in early-successional floodplain habitats of Alaska BLM-BAER Final Report. Invasive Plant Species Monitoring and Control: Areas Impacted by 2004 and 2005 Fires in Interior Alaska. A survey of Alaska BLM lands along the Dalton, Steese, and Taylor Highways BAER Final Report; Invasive Plant Monitoring Following 2004 Fires. USFWS National Wildlife Refuges – Alaska Region. Prepared for the U.S. Fish and Wildlife Service- Alaska Regional Office