Kevin P Kenow (Former Employee)
Science and Products
Filter Total Items: 68
Mercury and other element exposure in tree swallows nesting at low pH and neutral pH lakes in northern Wisconsin USA Mercury and other element exposure in tree swallows nesting at low pH and neutral pH lakes in northern Wisconsin USA
The primary objective of this study was to determine whether tree swallows (Tachycineta bicolor) demonstrate similar responses to lake pH and mercury (Hg) contamination in northern Wisconsin as do common loons (Gavia immer). Similar to common loons, Hg concentrations in the blood of tree swallow nestlings were higher, Hg concentrations in eggs tended to be higher, and egg size tended to...
Authors
Thomas W. Custer, Christine M. Custer, Wayne E. Thogmartin, Paul M. Dummer, Ronald Rossmann, Kevin P. Kenow, Michael W. Meyer
Mercury and other element exposure in tree swallows nesting at low pH and neutral pH lakes in northern Wisconsin USA Mercury and other element exposure in tree swallows nesting at low pH and neutral pH lakes in northern Wisconsin USA
The primary objective of this study was to determine whether tree swallows (Tachycineta bicolor) demonstrate similar responses to lake pH and mercury (Hg) contamination in northern Wisconsin as do common loons (Gavia immer). Similar to common loons, Hg concentrations in the blood of tree swallow nestlings were higher, Hg concentrations in eggs tended to be higher, and egg size tended to...
Authors
Thomas W. Custer, Christine M. Custer, Wayne E. Thogmartin, Paul M. Dummer, R. Rossmann, K.P. Kenow, M.W. Meyer
Bi-phasic trends in mercury concentrations in blood of Wisconsin common loons during 1992-2010 Bi-phasic trends in mercury concentrations in blood of Wisconsin common loons during 1992-2010
We assessed the ecological risk of mercury (Hg) in aquatic systems by monitoring common loon (Gavia immer) population dynamics and blood Hg concentrations. We report temporal trends in blood Hg concentrations based on 334 samples collected from adults recaptured in subsequent years (resampled 2–9 times) and from 421 blood samples of chicks collected at lakes resampled 2–8 times 1992–2010...
Authors
Michael W. Meyer, Paul W. Rasmussen, Carl J. Watras, Brick M. Fevold, Kevin P. Kenow
Effects of injected methylmercury on the hatching of common loon (Gavia immer) eggs Effects of injected methylmercury on the hatching of common loon (Gavia immer) eggs
To determine the level of in ovo methylmercury (MeHg) exposure that results in detrimental effects on fitness and survival of loon embryos and hatched chicks, we conducted a field study in which we injected eggs with various doses of MeHg on day 4 of incubation. Eggs were collected following about 23 days of natural incubation and artificially incubated to observe hatching. Reduced...
Authors
Kevin P. Kenow, Michael W. Meyer, Ronald Rossmann, Annette Gendron-Fitzpatrick, Brian R. Gray
Capturing Common Loons during prenesting and nesting periods Capturing Common Loons during prenesting and nesting periods
Several techniques have been used to capture Common Loons (Gavia immer), but effectiveness is limited during periods of the breeding season when loons do not have chicks. From 2005 to 2008, we studied loons in northern Wisconsin and used night lighting to capture loons on nests and also designed a lift net for capturing loons prior to nesting. At night, incubating loons were approached...
Authors
K.P. Kenow, J. M. Wilson, M.W. Meyer
Composition of the seed bank in drawdown areas of navigation pool 8 of the upper Mississippi river Composition of the seed bank in drawdown areas of navigation pool 8 of the upper Mississippi river
In an effort to enhance aquatic plant production and habitat diversity on the Upper Mississippi River (UMR), resource managers considered water level reduction as a management tool to increase the area of emergent and submersed aquatic vegetation by natural seed germination. To quantify the availability of seed, we assessed the potential seed bank of selected areas of Navigation Pool 8...
Authors
K.P. Kenow, J.E. Lyon
Science and Products
Filter Total Items: 68
Mercury and other element exposure in tree swallows nesting at low pH and neutral pH lakes in northern Wisconsin USA Mercury and other element exposure in tree swallows nesting at low pH and neutral pH lakes in northern Wisconsin USA
The primary objective of this study was to determine whether tree swallows (Tachycineta bicolor) demonstrate similar responses to lake pH and mercury (Hg) contamination in northern Wisconsin as do common loons (Gavia immer). Similar to common loons, Hg concentrations in the blood of tree swallow nestlings were higher, Hg concentrations in eggs tended to be higher, and egg size tended to...
Authors
Thomas W. Custer, Christine M. Custer, Wayne E. Thogmartin, Paul M. Dummer, Ronald Rossmann, Kevin P. Kenow, Michael W. Meyer
Mercury and other element exposure in tree swallows nesting at low pH and neutral pH lakes in northern Wisconsin USA Mercury and other element exposure in tree swallows nesting at low pH and neutral pH lakes in northern Wisconsin USA
The primary objective of this study was to determine whether tree swallows (Tachycineta bicolor) demonstrate similar responses to lake pH and mercury (Hg) contamination in northern Wisconsin as do common loons (Gavia immer). Similar to common loons, Hg concentrations in the blood of tree swallow nestlings were higher, Hg concentrations in eggs tended to be higher, and egg size tended to...
Authors
Thomas W. Custer, Christine M. Custer, Wayne E. Thogmartin, Paul M. Dummer, R. Rossmann, K.P. Kenow, M.W. Meyer
Bi-phasic trends in mercury concentrations in blood of Wisconsin common loons during 1992-2010 Bi-phasic trends in mercury concentrations in blood of Wisconsin common loons during 1992-2010
We assessed the ecological risk of mercury (Hg) in aquatic systems by monitoring common loon (Gavia immer) population dynamics and blood Hg concentrations. We report temporal trends in blood Hg concentrations based on 334 samples collected from adults recaptured in subsequent years (resampled 2–9 times) and from 421 blood samples of chicks collected at lakes resampled 2–8 times 1992–2010...
Authors
Michael W. Meyer, Paul W. Rasmussen, Carl J. Watras, Brick M. Fevold, Kevin P. Kenow
Effects of injected methylmercury on the hatching of common loon (Gavia immer) eggs Effects of injected methylmercury on the hatching of common loon (Gavia immer) eggs
To determine the level of in ovo methylmercury (MeHg) exposure that results in detrimental effects on fitness and survival of loon embryos and hatched chicks, we conducted a field study in which we injected eggs with various doses of MeHg on day 4 of incubation. Eggs were collected following about 23 days of natural incubation and artificially incubated to observe hatching. Reduced...
Authors
Kevin P. Kenow, Michael W. Meyer, Ronald Rossmann, Annette Gendron-Fitzpatrick, Brian R. Gray
Capturing Common Loons during prenesting and nesting periods Capturing Common Loons during prenesting and nesting periods
Several techniques have been used to capture Common Loons (Gavia immer), but effectiveness is limited during periods of the breeding season when loons do not have chicks. From 2005 to 2008, we studied loons in northern Wisconsin and used night lighting to capture loons on nests and also designed a lift net for capturing loons prior to nesting. At night, incubating loons were approached...
Authors
K.P. Kenow, J. M. Wilson, M.W. Meyer
Composition of the seed bank in drawdown areas of navigation pool 8 of the upper Mississippi river Composition of the seed bank in drawdown areas of navigation pool 8 of the upper Mississippi river
In an effort to enhance aquatic plant production and habitat diversity on the Upper Mississippi River (UMR), resource managers considered water level reduction as a management tool to increase the area of emergent and submersed aquatic vegetation by natural seed germination. To quantify the availability of seed, we assessed the potential seed bank of selected areas of Navigation Pool 8...
Authors
K.P. Kenow, J.E. Lyon