Publications
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2013 status of the Lake Ontario lower trophic levels 2013 status of the Lake Ontario lower trophic levels
Phosphorus showed high variation across nearshore (10 m depth) sites but was more stable at offshore (20 m and deeper) stations. In June and July, sites at the mouth of the Niagara River and at Oak Orchard had high phosphorus concentrations (20 – 46 μg/L). Epilimnetic average April-Oct total phosphorus (TP) ranged between 6.9 and 19.9 μg/L in the nearshore and between 5.8 and 10.2 μg/L...
Authors
Kristen T. Holeck, Lars G. Rudstam, Christopher Hotaling, Russ D. McCullough, Dave Lemon, Web Pearsall, Jana R. Lantry, Michael J. Connerton, Steve LaPan, Betsy Trometer, Brian F. Lantry, Maureen Walsh, Brian Weidel
Status and trends in the Lake Superior fish community, 2013 Status and trends in the Lake Superior fish community, 2013
In 2013, the Lake Superior fish community was sampled with daytime bottom trawls at 79 nearshore and 35 offshore locations. In the nearshore zone, a total of 23,432 individuals of 27 species or morphotypes were collected. Nearshore lakewide mean biomass was 5.5 kg ha-1, which was slightly higher than that observed in the past few years, but below the long-term average of 8.8 kg ha-1. In...
Authors
Mark Vinson, Lori M. Evrard, Owen T. Gorman, Daniel L. Yule
Fisheries research and monitoring activities of the Lake Erie Biological Station, 2013 Fisheries research and monitoring activities of the Lake Erie Biological Station, 2013
In 2013, the U.S. Geological Survey’s Lake Erie Biological Station successfully completed large vessel surveys in all three of Lake Erie’s basins. Lake Erie Biological Station’s primary vessel surveys included the Western Basin Forage Fish Assessment and East Harbor Forage Fish Assessment as well as contributing to the cooperative multi-agency Central Basin Hydroacoustics Assessment and...
Authors
Richard T. Kraus, Mark W. Rogers, Patrick Kocovsky, William Edwards, Betsy L. Bodamer Scarbro, Kevin R. Keretz, Stephanie A. Berkman
Openness to the unexpected: Our Pathways to Careers in a Federal Research Laboratory. Openness to the unexpected: Our Pathways to Careers in a Federal Research Laboratory.
Many fisheries professionals may not be in the job they originally envisioned for themselves when they began their undergraduate studies. Rather, their current positions could be the result of unexpected, opportunistic, or perhaps even “lucky” open doors that led them down an unexpected path. In many cases, a mentor helped facilitate the unforeseen trajectory. We offer three unique...
Authors
Kurt R. Newman, David B. Bunnell, Darryl W. Hondorp
Increased piscivory by lake whitefish in Lake Huron Increased piscivory by lake whitefish in Lake Huron
We evaluated the diet of Lake Whitefish Coregonus clupeaformis in Lake Huron during 2002–2011 to determine the importance of Round Goby Neogobius melanostomus and other fish as prey items. Lake Whitefish that had reached approximately 400 mm in length incorporated fish into their diets. The overall percentage of adult Lake Whitefish in Lake Huron that had eaten fish increased from 10% in...
Authors
Steven A. Pothoven, Charles P. Madenjian
Introduction to a special section: Ecology, culture, and management of Burbot Introduction to a special section: Ecology, culture, and management of Burbot
The Burbot Lota lota is the only truly freshwater member of the cod family (Gadidae) and one of only two species of freshwater fish that have a circumpolar range (McPhail and Lindsey 1970; McPhail and Paragamian 2000). Two subspecies of Lota lota have been documented: Lota lota maculosa, which is found exclusively in North America from south of Great Slave Lake in Canada to the southern...
Authors
Martin A. Stapanian, Charles P. Madenjian
Early responses to zebra mussels in the Great Lakes: a journey from information vacuum to policy and regulation Early responses to zebra mussels in the Great Lakes: a journey from information vacuum to policy and regulation
Invasive species such as zebra mussels pose a threat to the economies and environments of coastal and fresh-water habitats around the world. Consequently, it is important that government policies and programs be adequate to protect these waters from invaders. This chapter documents key events that took place in the early years (1988-1991) of zebra mussel colonization of the Laurentian...
Authors
Ronald W. Griffiths, Don W. Schloesser, William P. Kovalak
Quagga and zebra mussels: biology, impacts, and control Quagga and zebra mussels: biology, impacts, and control
Quagga and Zebra Mussels: Biology, Impacts, and Control, Second Edition provides a broad view of the zebra/quagga mussel issue, offering a historic perspective and up-to-date information on mussel research. Comprising 48 chapters, this second edition includes reviews of mussel morphology, physiology, and behavior. It details mussel distribution and spread in Europe and across North...
Routine screening of harmful microorganisms in beach sands: implications to public health Routine screening of harmful microorganisms in beach sands: implications to public health
Beaches worldwide provide recreational opportunities to hundreds of millions of people and serve as important components of coastal economies. Beach water is often monitored for microbiological quality to detect the presence of indicators of human sewage contamination so as to prevent public health outbreaks associated with water contact. However, growing evidence suggests that beach...
Authors
Raquel Sabino, R. Rodrigues, I. Costa, Carlos Carneiro, M. Cunha, A. Duarte, N. Faria, F.C. Ferriera, M.J. Gargate, C. Julio, M.L. Martins, Meredith Nevers, M. Oleastro, H. Solo-Gabriele, C. Verissimo, C. Viegas, Richard L. Whitman, J. Brandao
Probabilistic analysis showing that a combination of bacteroides and methanobrevibacter source tracking markers is effective for identifying waters contaminated by human fecal pollution Probabilistic analysis showing that a combination of bacteroides and methanobrevibacter source tracking markers is effective for identifying waters contaminated by human fecal pollution
Microbial source tracking assays to identify sources of waterborne contamination typically target genetic markers of host-specific microorganisms. However, no bacterial marker has been shown to be 100% host-specific, and cross-reactivity has been noted in studies evaluating known source samples. Using 485 challenge samples from 20 different human and animal fecal sources, this study...
Authors
Christopher Johnston, Muruleedhara N. Byappanahalli, Jacqueline MacDonald Gibson, Jennifer A. Ufnar, Richard L. Whitman, Jill R. Stewart
Multi-laboratory evaluations of the performance of Catellicoccus marimammalium PCR assays developed to target gull fecal sources Multi-laboratory evaluations of the performance of Catellicoccus marimammalium PCR assays developed to target gull fecal sources
Here we report results from a multi-laboratory (n = 11) evaluation of four different PCR methods targeting the 16S rRNA gene of Catellicoccus marimammalium originally developed to detect gull fecal contamination in coastal environments. The methods included a conventional end-point PCR method, a SYBR® Green qPCR method, and two TaqMan® qPCR methods. Different techniques for data...
Authors
Christopher D. Sinigalliano, Jared S. Ervin, Laurie C. Van De Werfhorst, Brian D. Badgley, Elisenda Ballestee, Jakob Bartkowiaka, Alexandria B. Boehm, Muruleedhara N. Byappanahalli, Kelly D. Goodwin, Michele Gourmelon, John Griffith, Patricia A. Holden, Jenny Jay, Blythe Layton, Cheonghoon Lee, Jiyoung Lee, Wim G. Meijer, Rachel Noble, Meredith Raith, Hodon Ryu, Michael J. Sadowsky, Alexander Schriewer, Dan Wang, David Wanless, Richard Whitman, Stefan Wuertz, Jorge W. Santo Domingo
PCB concentrations and activity of sea lamprey Petromyzon marinus vary by sex PCB concentrations and activity of sea lamprey Petromyzon marinus vary by sex
We determined the polychlorinated biphenyl (PCB) concentrations of 40 male and 40 female adult sea lampreys Petromyzon marinus captured in the Cheboygan River, a tributary to Lake Huron, during May 2011. In addition, we performed a laboratory experiment using passive integrated transponder tags to determine whether male adult sea lampreys were more active than female adult sea lampreys...
Authors
Charles P. Madenjian, Nicholas S. Johnson, Thomas R. Binder, Richard R. Rediske, James P. O'Keefe