Paul Dummer (Former Employee)
Science and Products
Filter Total Items: 29
Contaminant exposure of birds nesting in Green Bay, Wisconsin, USA Contaminant exposure of birds nesting in Green Bay, Wisconsin, USA
In earlier studies, elevated concentrations of polychlorinated biphenyl (PCB) and p,p'-dichlorodiphenyldichloroethylene (DDE) were reported in double-crested cormorant (Phalacrocorax auritus) eggs and tree swallow (Tachycineta bicolor) eggs and nestlings collected from lower Green Bay (WI, USA) in 1994 and 1995 and black-crowned night-heron (Nycticorax nycticorax) eggs collected in 1991
Authors
Thomas W. Custer, Paul M. Dummer, Christine M. Custer, J. Christian Franson, Michael Jones
Dredging and contaminant exposure to tree swallows nesting on the upper Mississippi River Dredging and contaminant exposure to tree swallows nesting on the upper Mississippi River
n 2008 and 2009, dredge material from the Mississippi River in Pool 8 south of Brownsville, Minnesota was used to construct nearby islands. Chemical analysis of sediment in 2001 and 2002 in the area to be dredged indicated detectable concentrations of organic and inorganic contaminants. Tree swallows (Tachycineta bicolor), whose diet is mainly aquatic invertebrates, were used to evaluate
Authors
Thomas W. Custer, Paul M. Dummer, Christine M. Custer, David Warburton
Exposure and effects of perfluoroalkyl substances in tree swallows nesting in Minnesota and Wisconsin, USA Exposure and effects of perfluoroalkyl substances in tree swallows nesting in Minnesota and Wisconsin, USA
The exposure and effects of perfluoroalkyl substances (PFASs) were studied at eight locations in Minnesota and Wisconsin between 2007 and 2011 using tree swallows (Tachycineta bicolor). Concentrations of PFASs were quantified as were reproductive success end points. The sample egg method was used wherein an egg sample is collected, and the hatching success of the remaining eggs in the...
Authors
Christine M. Custer, Thomas W. Custer, Paul M. Dummer, Matthew A. Etterson, Wayne E. Thogmartin, Qian Wu, Kurunthachalam Kannan, Annette Trowbridge, Patrick C. McKann
Perfluorinated compound concentrations in great blue heron eggs near St. Paul, Minnesota, USA, in 1993 and 2010-2011 Perfluorinated compound concentrations in great blue heron eggs near St. Paul, Minnesota, USA, in 1993 and 2010-2011
A great blue heron (Ardea herodias) colony on Pig's Eye Island on the Mississippi River near St. Paul, Minnesota, USA, is located near several potential perfluorinated compound (PFC) sources. The PFC concentrations in great blue heron eggs reported from a 1993 collection from the Pig's Eye colony were among the highest measured in bird eggs worldwide. The objective of this investigation...
Authors
Thomas W. Custer, Paul M. Dummer, Christine M. Custer, Qian Wu, Kurunthachalam Kannan, Annette Trowbridge
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
Science and Products
Filter Total Items: 29
Contaminant exposure of birds nesting in Green Bay, Wisconsin, USA Contaminant exposure of birds nesting in Green Bay, Wisconsin, USA
In earlier studies, elevated concentrations of polychlorinated biphenyl (PCB) and p,p'-dichlorodiphenyldichloroethylene (DDE) were reported in double-crested cormorant (Phalacrocorax auritus) eggs and tree swallow (Tachycineta bicolor) eggs and nestlings collected from lower Green Bay (WI, USA) in 1994 and 1995 and black-crowned night-heron (Nycticorax nycticorax) eggs collected in 1991
Authors
Thomas W. Custer, Paul M. Dummer, Christine M. Custer, J. Christian Franson, Michael Jones
Dredging and contaminant exposure to tree swallows nesting on the upper Mississippi River Dredging and contaminant exposure to tree swallows nesting on the upper Mississippi River
n 2008 and 2009, dredge material from the Mississippi River in Pool 8 south of Brownsville, Minnesota was used to construct nearby islands. Chemical analysis of sediment in 2001 and 2002 in the area to be dredged indicated detectable concentrations of organic and inorganic contaminants. Tree swallows (Tachycineta bicolor), whose diet is mainly aquatic invertebrates, were used to evaluate
Authors
Thomas W. Custer, Paul M. Dummer, Christine M. Custer, David Warburton
Exposure and effects of perfluoroalkyl substances in tree swallows nesting in Minnesota and Wisconsin, USA Exposure and effects of perfluoroalkyl substances in tree swallows nesting in Minnesota and Wisconsin, USA
The exposure and effects of perfluoroalkyl substances (PFASs) were studied at eight locations in Minnesota and Wisconsin between 2007 and 2011 using tree swallows (Tachycineta bicolor). Concentrations of PFASs were quantified as were reproductive success end points. The sample egg method was used wherein an egg sample is collected, and the hatching success of the remaining eggs in the...
Authors
Christine M. Custer, Thomas W. Custer, Paul M. Dummer, Matthew A. Etterson, Wayne E. Thogmartin, Qian Wu, Kurunthachalam Kannan, Annette Trowbridge, Patrick C. McKann
Perfluorinated compound concentrations in great blue heron eggs near St. Paul, Minnesota, USA, in 1993 and 2010-2011 Perfluorinated compound concentrations in great blue heron eggs near St. Paul, Minnesota, USA, in 1993 and 2010-2011
A great blue heron (Ardea herodias) colony on Pig's Eye Island on the Mississippi River near St. Paul, Minnesota, USA, is located near several potential perfluorinated compound (PFC) sources. The PFC concentrations in great blue heron eggs reported from a 1993 collection from the Pig's Eye colony were among the highest measured in bird eggs worldwide. The objective of this investigation...
Authors
Thomas W. Custer, Paul M. Dummer, Christine M. Custer, Qian Wu, Kurunthachalam Kannan, Annette Trowbridge
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