Zobrazeno 1 - 10
of 31
pro vyhledávání: '"James R. Liebig"'
Autor:
Nancy R. Morehead, Sander D. Robinson, Geoffrey Paul Horst, Orlando Sarnelle, James R. Liebig, Henry A. Vanderploeg, Thomas H. Johengen
Publikováno v:
Freshwater Biology. 62:664-680
Summary Seston availability and quality can affect the condition, nutrient stoichiometry and nutrient excretion of dreissenid mussels and other aquatic consumers. Nutrient excretion by dreissenid mussels may affect phytoplankton community composition
Autor:
James R. Liebig, Masanori Fujimoto, Ann McCarthy, Joann F. Cavaletto, Henry A. Vanderploeg, Vincent J. Denef
Publikováno v:
Journal of Great Lakes Research. 42:1036-1048
Freshwater bacteria play key roles in biogeochemical cycling and contribute significantly to biomass and energy fluxes. However, studies of Great Lakes ecosystem dynamics often omit bacteria. Here, we used high throughput sequencing to analyze how ba
Publikováno v:
Applied and Environmental Microbiology. 82:1423-1432
The Chloroflexi CL500-11 clade contributes a large proportion of the bacterial biomass in the oxygenated hypolimnia of deep lakes worldwide, including the world's largest freshwater system, the Laurentian Great Lakes. Traits that allow CL500-11 to th
Autor:
Henry A. Vanderploeg, Doran M. Mason, Gregory A. Lang, Joann F. Cavaletto, Radka Ptacnikova, Steven A. Pothoven, Damon M. Krueger, Steven A. Ruberg, James R. Liebig
Publikováno v:
Journal of Great Lakes Research. 41:125-142
A plankton survey system, fisheries acoustics, and opening/closing nets were used to define fine-scale diel vertical spatial interactions among non-indigenous alewives and visually preying cercopagids ( Bythotrephes longimanus and Cercopagis pengoi )
Publikováno v:
Journal of Great Lakes Research. 40:83-94
Experiments from May to December measuring selective grazing and egestion of different phytoplankton taxa in natural Saginaw Bay (Lake Huron) seston by shallow-water morph quagga mussels ( Dreissena bugensis rostriformis ) showed that the mussels wer
Autor:
Thomas H. Johengen, James R. Liebig, Henry A. Vanderploeg, Peter J. Lavrentyev, Dinorah H. Chacin, Gayantonia Franzè
Publikováno v:
Journal of Great Lakes Research. 40:95-105
Invasive quagga mussels have recently replaced zebra mussels as the dominant filter-feeding bivalves in the Great Lakes. This study examined microzooplankton (i.e., grazers Microcystis and diatom blooms, respectively. Feeding on microzooplankton coul
Autor:
Charles P. Madenjian, Craig Stow Stow, James R. Liebig, Steven A. Pothoven, Henry A. Vanderploeg, Thomas F. Nalepa, Gary L. Fahnenstiel, David B. Bunnell, Joann F. Cavaletto
Publikováno v:
Journal of Great Lakes Research. 38:336-352
We examined seasonal dynamics of zooplankton at an offshore station in Lake Michigan from 1994 to 2003 and 2007 to 2008. This period saw variable weather, declines in planktivorous fish abundance, the introduction and expansion of dreissenid mussels,
Publikováno v:
Journal of Great Lakes Research. 36:74-82
Bythotrephes were collected on a regular basis at a 110 m deep reference station in Lake Michigan over a 10-year period 1994–2003. The measured population structure in conjunction with an updated bioenergetic model was used to estimate daily predat
Autor:
Steven A. Pothoven, Henry A. Vanderploeg, Gary L. Fahnenstiel, James R. Liebig, Thomas F. Nalepa
Publikováno v:
Journal of Great Lakes Research. 36:50-59
We determined the clearance rates of the profunda morph of the quagga mussel (Dreissena bugensis) using seston and Cryptomonas ozolini, a high-quality algal food, for the temperature range 1–7°C, which is the full temperature range this morph is l
Autor:
James R. Liebig, Steven A. Pothoven, Gary L. Fahnenstiel, Radka Pichlová-Ptáčníková, Joann F. Cavaletto, Henry A. Vanderploeg
Publikováno v:
Journal of Great Lakes Research. 36:65-73
The predatory cladocerans, Leptodora kindtii, Bythotrephes longimanus, and Cercopagis pengoi coexist in the waters of southeastern Lake Michigan near Muskegon, Michigan. Leptodora is indigenous, whereas Bythotrephes and Cercopagis are nonindigenous a