Search Results - "Cavaletto, Joann F."

Hypoxic zones as habitat for zooplankton in Lake Erie: Refuges from predation or exclusion zones? by Vanderploeg, Henry A., Ludsin, Stuart A., Cavaletto, Joann F., Höök, Tomas O., Pothoven, Steven A., Brandt, Stephen B., Liebig, James R., Lang, Gregory A.

“…Bottom hypoxia has reemerged as a prominent feature of Lake Erie's central basin during late summer. Similar to coastal marine systems, the impacts of hypoxia…”
Get full text

Distribution and dynamics of nitrogen and microbial plankton in southern Lake Michigan during spring transition 1999–2000 by Gardner, Wayne S., Lavrentyev, Peter J., Cavaletto, Joann F., McCarthy, Mark J., Eadie, Brian J., Johengen, Thomas H., Cotner, James B.

“…Ammonium and amino acid fluxes were examined as indicators of N and microbial food web dynamics in southern Lake Michigan during spring. Either 15NH4+ or a…”
Get full text

Hypoxia affects spatial distributions and overlap of pelagic fish, zooplankton, and phytoplankton in Lake Erie by Vanderploeg, Henry A., Ludsin, Stuart A., Ruberg, Steven A., Höök, Tomas O., Pothoven, Steven A., Brandt, Stephen B., Lang, Gregory A., Liebig, James R., Cavaletto, Joann F.

“…Bottom hypoxia has reemerged as a prominent feature of Lake Erie's central basin during late summer. Similar to coastal and marine systems, the influence of…”
Get full text

Alewife planktivory controls the abundance of two invasive predatory cladocerans in Lake Michigan by POTHOVEN, STEVEN A, VANDERPLOEG, HENRY A, CAVALETTO, JOANN F, KRUEGER, DAMON M, MASON, DORAN M, BRANDT, STEPHEN B

“…1. We sampled along a nearshore transect (10-m bathymetric contour) in Lake Michigan to determine diet, 24-h feeding periodicity, daily ration and food…”
Get full text

Temporal and Spatial Separation Allow Coexistence of Predatory Cladocerans: Leptodora kindtii, Bythotrephes longimanus and Cercopagis pengoi, in Southeastern Lake Michigan by Cavaletto, Joann F., Vanderploeg, Henry A., Pichlová-Ptáčníková, Radka, Pothoven, Steven A., Liebig, James R., Fahnenstiel, Gary L.

“…The predatory cladocerans, Leptodora kindtii, Bythotrephes longimanus, and Cercopagis pengoi coexist in the waters of southeastern Lake Michigan near Muskegon,…”
Get full text

Effects of Natural Light on Nitrogen Cycling Rates in the Mississippi River Plume by Gardner, Wayne S., Cavaletto, Joann F., Cotner, James B., Johnson, Jeffrey R.

“…Isotope-dilution experiments with15NH4 +were conducted of near-surface water samples in the Mississippi River plume during May 1992 and July 1993 to quantify…”
Get full text

Nutrient Limitation of Heterotrophic Bacteria in Florida Bay by Cotner, James B., Sada, Rosa H., Bootsma, Harvey, Johengen, Thomas, Cavaletto, Joann F., Gardner, Wayne S.

“…We examined heterotrophic bacterial nutrient limitation at four sites in Florida Bay, U. S. in summer 1994 and winter 1995. Bacterial growth and biomass…”
Get full text

Spatial variation in density, mean size and physiological condition of the holarctic amphipod Diporeia spp. in Lake Michigan by Nalepa, Thomas F., Hartson, David J., Buchanan, Jennifer, Cavaletto, Joann F., Lang, Gregory A., Lozano, Stephen J.

“…Summary 1 We examined spatial patterns in population characteristics (density, biomass, mean body length) and physiological condition (lipid content,…”
Get full text

Temporal and spatial patterns of UV penetration in Lakes Michigan and Huron by Vanderploeg, Henry A., Glyshaw, Paul W., Rutherford, Edward S., Cavaletto, Joann F., Mason, Doran M., Wells, David J., Tomczak, Madeline G.

“…Expansion of dreissenid mussel populations and decreased nutrient loading have led to a decrease in seston concentration and an increase in water clarity…”
Get full text

Seasonal Changes in Lipid Content and Composition in the Benthic Amphipods Monoporeia affinis and Pontoporeia femorata by Hill, Cathy, Quigley, Michael A., Cavaletto, Joann F., Gordon, Wendy

“…Seasonal variation in lipid content and composition was studied in deposit-feeding amphipods from a Baltic archipelago. In Monoporeia affinis, which is more…”
Get full text

Seasonal zooplankton dynamics in Lake Michigan: Disentangling impacts of resource limitation, ecosystem engineering, and predation during a critical ecosystem transition by Vanderploeg, Henry A., Pothoven, Steven A., Fahnenstiel, Gary L., Cavaletto, Joann F., Liebig, James R., Stow, Craig A., Nalepa, Thomas F., Madenjian, Charles P., Bunnell, David B.

“…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,…”
Get full text

Biotic and abiotic factors influencing zooplankton vertical distribution in Lake Huron by Nowicki, Carly J., Bunnell, David B., Armenio, Patricia M., Warner, David M., Vanderploeg, Henry A., Cavaletto, Joann F., Mayer, Christine M., Adams, Jean V.

“…The vertical distribution of zooplankton can have substantial influence on trophic structure in freshwater systems, particularly by determining spatial overlap…”
Get full text

Big versus small: Does Bythotrephes longimanus predation regulate spatial distribution of another invasive predatory cladoceran, Cercopagis pengoi? by Ptáčníková, Radka, Vanderploeg, Henry A., Cavaletto, Joann F.

“…Offshore–onshore spatial distribution and abundance of Cercopagis pengoi, a small non-indigenous predatory cercopagid, in Lake Michigan have been hypothesized…”
Get full text

Effects of the Zebra Mussel, Dreissena polymorpha, on Community Nitrogen Dynamics in Saginaw Bay, Lake Huron by Gardner, Wayne S., Cavaletto, Joann F., Johengen, Thomas H., Johnson, Jeffrey R., Heath, Robert T., Cotner, James B.

“…The effects of the zebra mussel, Dreissena polymorpha, on chlorophyll and nutrient concentration changes and community ammonium uptake and regeneration rates…”
Get full text

Spatial and predatory interactions of visually preying nonindigenous zooplankton and fish in Lake Michigan during midsummer by Vanderploeg, Henry A., Pothoven, Steven A., Krueger, Damon, Mason, Doran M., Liebig, James R., Cavaletto, Joann F., Ruberg, Steven A., Lang, Gregory A., Ptáčníková, Radka

“…A plankton survey system, fisheries acoustics, and opening/closing nets were used to define fine-scale diel vertical spatial interactions among non-indigenous…”
Get full text

Seasonal and Annual Variation in Weight and Biochemical Content of the Zebra Mussel, Dreissena polymorpha, in Lake St. Clair by Nalepa, Thomas F., Cavaletto, Joann F., Ford, Mark, Gordon, Wendy M., Wimmer, Marijo

“…Zebra mussels, Dreissena polymorpha, were collected monthly from April/May to November in 1990 and 1991 from two sites in Lake St. Clair. The sites were…”
Get full text

Lipids and Life-Cycle Strategy of a Hypolimnetic Copepod in Lake Michigan by Vanderploeg, Henry A., Gardner, Wayne S., Parrish, Christopher C., Liebig, James R., Cavaletto, Joann F.

“…Concentration and composition of lipids varied seasonally in adult female Diaptomus sicilis, a hypolimnetic suspension-feeding calanoid copepod, in Lake…”
Get full text

Wax Esters in Two Species of Freshwater Zooplankton by Cavaletto, Joann F., Vanderploeg, Henry A., Gardner, Wayne S.

“…Lipid classes were determined in three Lake Michigan hypolimnetic calanoid copepods, Limnocalanus macrurus, Diaptomus sicilis, and Senecella calanoides…”
Get full text

Lipid Composition Related to Size and Maturity of the Amphipod Pontoporeia Hoyi by Quigley, Michael A., Cavaletto, Joann F., Gardner, Wayne S.

“…Micro-gravimetric determination of the lipid content of amphipods ( Pontoporeia hoyi) obtained from a 45-m-deep Lake Michigan sampling site indicated that the…”
Get full text

Anatomy of the recurrent coastal sediment plume in Lake Michigan and its impacts on light climate, nutrients, and plankton by Vanderploeg, H. A., Johengen, T. H., Lavrentyev, P. J., Chen, C., Lang, G. A., Agy, M. A., Bundy, M. H., Cavaletto, J. F., Eadie, B. J., Liebig, J. R., Miller, G. S., Ruberg, S. A., McCormick, M. J.

“…As part of the Episodic Events Great Lakes Experiment, we sampled total suspended matter (TSM), light climate, nutrients, and plankton along cross‐margin…”
Get full text