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Factors associated with mortality of walleyes and saugers caught in live-release tournaments
We measured the initial mortality (fish judged nonreleasable at weigh-in), prerelease mortality (fish judged nonreleasable 1–2 h after weigh-in [which includes initial mortality]), and postrelease mortality (fish that died during a 5-d retention in net-pens) in 14 live-release tournaments for walleye Sander vitreus conducted in...
Schramm, Harold; Vondracek, Bruce C.; French, William E.; Gerard, Patrick D.Fine scale daily movements and habitat use of East Pacific green turtles at a shallow coastal lagoon in Baja California Sur, Mexico
Green turtles spend most of their lives in coastal foraging areas where they face multiple anthropogenic impacts. Therefore, understanding their spatial use in this environment is a priority for conservation efforts. We studied the fine scale daily movements and habitat use of East Pacific green turtles (Chelonia mydas) at Laguna San Ignacio, a...
Senko, Jesse; Koch, Volker; Megill, William M.; Carthy, Raymond R.; Templeton, R.obert P.; Nichols, Wallace J.Forest exlosures: an experimental approach to understanding browsing by moose and deer
No abstract available.
DeStefano, Stephen; Faison, Edward K.; Compton, J.; Wattles, David W.Genetic applications in wild felids
No abstract available.
Macdonald, David; Loveridge, Andrew; Culver, Melanie; Driscoll, Carlos; Eizirik, Eduardo; Spong, GoranHeadwater streams and forest management: does ecoregional context influence logging effects on benthic communities?
Effects of forest management on stream communities have been widely documented, but the role that climate plays in the disturbance outcomes is not understood. In order to determine whether the effect of disturbance from forest management on headwater stream communities varies by climate, we evaluated benthic macroinvertebrate communities in 24...
Medhurst, R. Bruce; Wipfli, Mark S.; Binckley, Chris; Polivka, Karl; Hessburg, Paul F.; Salter, R. BrionIdentification of marine-derived lipids in juvenile coho salmon and aquatic insects through fatty acid analysis
The energetic benefits enjoyed by consumers in streams with salmon runs depend on how those benefits are accrued. Adult Pacific salmon Oncorhynchus spp. deliver significant amounts of nutrients (i.e., nitrogen and phosphorus) and carbon to streams when they spawn and die; these nutrient additions can have demonstrable effects on primary...
Heintz, Ron A.; Wipfli, Mark S.; Hudson, John P.Linking ecosystems, food webs, and fish production: subsidies in salmonid watersheds
Physical characteristics of riverine habitats, such as large wood abundance, pool geometry and abundance, riparian vegetation cover, and surface flow conditions, have traditionally been thought to constrain fish production in these ecosystems. Conversely, the role of food resources (quantity and quality) in controlling fish production has received...
Wipfli, Mark S.; Baxter, Colden V.Maintenance of Eastern hemlock forests: Factors associated with hemlock vulnerability to hemlock woolly adelgid
Eastern hemlock (Tsuga canadensis [L.]) is the most shade-tolerant and long-lived tree species in eastern North America. The hemlock woolly adelgid (Adelges tsugae) (HWA), is a nonnative invasive insect that feeds on eastern hemlock and Carolina hemlock (Tsuga caroliniana Engelm.). HWA currently is established in 17 eastern states and is causing...
Fajvan, Mary Ann; Wood, Petra BohallMigration patterns and movements of sandhill cranes wintering in central and southwestern Louisiana
In this study we trapped wintering sandhill cranes (Grus canadensis) in Louisiana and fitted them with satellite transmitters to determine their migration routes. Four of the 6 sandhill cranes with validated locations and a terminus point used the Central Flyway for spring migration; 2 of these 4 (the only 2 for which we have data) also used the...
Hartup, Barry K.; King, Sammy L.; Pierce, Aaron R.; Hersey, Kent; Winstead, NicholasMigratory urge and gll Na+,K+-ATPase activity of hatchery-reared Atlantic salmon smolts from the Dennys and Penobscot River stocks, Maine
Hatchery-reared Atlantic salmon Salmo salar smolts produced from captive-reared Dennys River and sea-run Penobscot River broodstock are released into their source rivers in Maine. The adult return rate of Dennys smolts is comparatively low, and disparity in smolt quality between stocks resulting from genetic or broodstock rearing effects...
Spencer, Randall C.; Zydlewski, Joseph D.; Zydlewski, Gayle B.Nest and chick survival and colony-site dynamics of least terns in the U.S. Virgin Islands
We report nest and chick survival and colony-site dynamics of the Least Tern (Sternula antillarum). These results are the first for the Caribbean and were derived with likelihood-based approaches from 4640 nests and 44 chicks fitted with transmitters monitored in 52 colonies at St. Croix, U.S. Virgin Islands, 2003–2006. Managed colonies...
Lombard, Claudia D.; Collazo, Jaime; McNair, Douglas B.No evidence of trophic mismatch for caribou in Greenland
No abstract available.
Griffith, Dennis B.; Adams, Layne G.; Douglas, David C.; Cuyler, Christine; White, Robert G.; Gunn, Anne; Russell, Donald E.; Cameron, Raymond D.