Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Bernie Pientka"'
Autor:
Bernie Pientka, Nick Staats, Jason D. Stockwell, Rosalie Bruel, J. Ellen Marsden, Timothy B. Mihuc
Publikováno v:
Journal of Great Lakes Research. 47:1171-1181
Invasive species can have major disruptions on native food webs, yet the impact of species introductions and whether they will become invasive appears to be context-dependent. Rainbow smelt and alewife co-exist as invasive species in the Laurentian G
Publikováno v:
Journal of Great Lakes Research. 46:622-632
Identification of fish stocks plays an important role in fisheries management, but stock identification often depends on the techniques used and the management goals as much as on actual population structure. Historically, stocks were identified by p
Autor:
Lars G. Rudstam, Holly A. Waterfield, Patrick M. Kocovsky, Larry D. Witzel, Patrick J. Sullivan, Bernie Pientka, John W. Deller, David M. Warner, Ted Schaner, Daniel L. Yule
Publikováno v:
Journal of Great Lakes Research. 39:655-662
Standardized methods of data collection and analysis ensure quality and facilitate comparisons among systems. We evaluated the importance of three recommendations from the Standard Operating Procedure for hydroacoustics in the Laurentian Great Lakes
Autor:
Jeffrey S. Schaeffer, Thomas R. Hrabik, David M. Warner, Bernie Pientka, Timothy P. O'Brien, Jeffrey D. Holuszko, Lars G. Rudstam, Randall M. Claramunt, Daniel L. Yule
Publikováno v:
Fisheries Research. :62-69
Because it is not possible to identify species with echosounders alone, trawling is widely used as a method for collecting species and size composition data for allocating acoustic fish density estimates to species or size groups. In the Laurentian G
Autor:
Neil C. Kamman, Robert Estabrook, Peter M. Lorey, Bernie Pientka, Charles T. Driscoll, Andrew Major, E. D. Glassford
Publikováno v:
Environmental Toxicology and Chemistry. 23:1172
We report on mercury (Hg) contamination in waters, sediments, and biota of Vermont and New Hampshire (USA) lakes measured during 1998-2000, using a geographically randomized design. Waters and sediments of 92 lakes were sampled for mercury, methylmer