Daniel R Ruthrauff, Ph.D. (Former Employee)
Science and Products
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A global threats overview for Numeniini populations: synthesising expert knowledge for a group of declining migratory birds. A global threats overview for Numeniini populations: synthesising expert knowledge for a group of declining migratory birds.
The Numeniini is a tribe of 13 wader species (Scolopacidae, Charadriiformes) of which seven are Near Threatened or globally threatened, including two Critically Endangered. To help inform conservation management and policy responses, we present the results of an expert assessment of the threats that members of this taxonomic group face across migratory flyways. Most threats are...
Authors
James W. Pearce-Higgins, Daniel J. Brown, David J.T. Douglas, José A. Alves, Mariagrazia Bellio, Pierrick Bocher, Graeme M. Buchannan, Rob Clay, Jesse R. Conklin, Nicola Crockford, Peter Dann, Jaanus Elts, Christian Friis, Richard A. Fuller, Jennifer A. Gill, Ken Gosbell, James A. Johnson, Rocio Marquez-Ferrando, Jose A. Masero, David S. Melville, Spike Millington, Clive Minton, Taej Mundkur, Erika Nol, Hannes Pehlak, Theunis Piersma, Danny I. Rogers, Daniel R. Ruthrauff, Nathan R. Senner, Junid Nazeer Shah, Rob D. Sheldon, Sergej A. Soloviev, Pavel S. Tomkovich, Yvonne I. Verkuil
Ways to be different: Foraging adaptations that facilitate higher intake rates in a northerly wintering shorebird compared with a low-latitude conspecific Ways to be different: Foraging adaptations that facilitate higher intake rates in a northerly wintering shorebird compared with a low-latitude conspecific
At what phenotypic level do closely related subspecies that live in different environments differ with respect to food detection, ingestion and processing? This question motivated an experimental study on rock sandpipers (Calidris ptilocnemis). The species' nonbreeding range spans 20 deg of latitude, the extremes of which are inhabited by two subspecies: C. p. ptilocnemis that winters...
Authors
Daniel R. Ruthrauff, Anne Dekinga, Robert E. Gill, Jan A. van Gils, Theunis Piersma
Avian influenza virus antibodies in Pacific Coast Red Knots (Calidris canutus rufa) Avian influenza virus antibodies in Pacific Coast Red Knots (Calidris canutus rufa)
Prevalence of avian influenza virus (AIV) antibodies in the western Atlantic subspecies of Red Knot (Calidris canutus rufa) is among the highest for any shorebird. To assess whether the frequency of detection of AIV antibodies is high for the species in general or restricted only to C. c. rufa, we sampled the northeastern Pacific Coast subspecies of Red Knot (Calidris canutus roselaari)...
Authors
James A. Johnson, Lucas H. DeCicco, Daniel R. Ruthrauff, Scott Krauss, Jeffrey S. Hall
Coping with the cold: An ecological context for the abundance and distribution of rock sandpipers during winter in upper Cook Inlet, Alaska Coping with the cold: An ecological context for the abundance and distribution of rock sandpipers during winter in upper Cook Inlet, Alaska
Shorebirds are conspicuous and abundant at high northern latitudes during spring and summer, but as seasonal conditions deteriorate, few remain during winter. To the best of our knowledge, Cook Inlet, Alaska (60.6˚ N, 151.6˚ W), is the world’s coldest site that regularly supports wintering populations of shorebirds, and it is also the most northerly nonbreeding location for shorebirds in...
Authors
Daniel R. Ruthrauff, Robert E. Gill, T. Lee Tibbitts
Ecological correlates of variable organ sizes and fat loads in the most northerly-wintering shorebirds Ecological correlates of variable organ sizes and fat loads in the most northerly-wintering shorebirds
Shorebirds at northern latitudes during the nonbreeding season typically carry relatively large lipid stores and exhibit an up-regulation of lean tissues associated with digestion and thermogenesis. Intraspecific variation in these tissues across sites primarily reflects differences in environmental conditions. Rock (Calidris ptilocnemis (Coues, 1873)) and Purple (Calidris maritima...
Authors
Daniel R. Ruthrauff, Anne Dekinga, Robert E. Gill, R.W. Summers, Theunis Piersma
Intercontinental migratory connectivity and population structuring of Dunlins from western Alaska Intercontinental migratory connectivity and population structuring of Dunlins from western Alaska
The Dunlin (Calidris alpina) is a polytypic shorebird with complex patterns of distribution and migration throughout its holarctic range. We analyzed mark-re sighting data obtained between 1977 and 2010 from birds captured at two major staging areas in western Alaska to test the hypothesis that the migration patterns of Alaskan populations are a mixture of parallel and chain, similar to...
Authors
Robert E. Gill, Colleen M. Handel, Daniel R. Ruthrauff
Science and Products
Filter Total Items: 24
No Result Found
Filter Total Items: 42
No results found.
Filter Total Items: 45
A global threats overview for Numeniini populations: synthesising expert knowledge for a group of declining migratory birds. A global threats overview for Numeniini populations: synthesising expert knowledge for a group of declining migratory birds.
The Numeniini is a tribe of 13 wader species (Scolopacidae, Charadriiformes) of which seven are Near Threatened or globally threatened, including two Critically Endangered. To help inform conservation management and policy responses, we present the results of an expert assessment of the threats that members of this taxonomic group face across migratory flyways. Most threats are...
Authors
James W. Pearce-Higgins, Daniel J. Brown, David J.T. Douglas, José A. Alves, Mariagrazia Bellio, Pierrick Bocher, Graeme M. Buchannan, Rob Clay, Jesse R. Conklin, Nicola Crockford, Peter Dann, Jaanus Elts, Christian Friis, Richard A. Fuller, Jennifer A. Gill, Ken Gosbell, James A. Johnson, Rocio Marquez-Ferrando, Jose A. Masero, David S. Melville, Spike Millington, Clive Minton, Taej Mundkur, Erika Nol, Hannes Pehlak, Theunis Piersma, Danny I. Rogers, Daniel R. Ruthrauff, Nathan R. Senner, Junid Nazeer Shah, Rob D. Sheldon, Sergej A. Soloviev, Pavel S. Tomkovich, Yvonne I. Verkuil
Ways to be different: Foraging adaptations that facilitate higher intake rates in a northerly wintering shorebird compared with a low-latitude conspecific Ways to be different: Foraging adaptations that facilitate higher intake rates in a northerly wintering shorebird compared with a low-latitude conspecific
At what phenotypic level do closely related subspecies that live in different environments differ with respect to food detection, ingestion and processing? This question motivated an experimental study on rock sandpipers (Calidris ptilocnemis). The species' nonbreeding range spans 20 deg of latitude, the extremes of which are inhabited by two subspecies: C. p. ptilocnemis that winters...
Authors
Daniel R. Ruthrauff, Anne Dekinga, Robert E. Gill, Jan A. van Gils, Theunis Piersma
Avian influenza virus antibodies in Pacific Coast Red Knots (Calidris canutus rufa) Avian influenza virus antibodies in Pacific Coast Red Knots (Calidris canutus rufa)
Prevalence of avian influenza virus (AIV) antibodies in the western Atlantic subspecies of Red Knot (Calidris canutus rufa) is among the highest for any shorebird. To assess whether the frequency of detection of AIV antibodies is high for the species in general or restricted only to C. c. rufa, we sampled the northeastern Pacific Coast subspecies of Red Knot (Calidris canutus roselaari)...
Authors
James A. Johnson, Lucas H. DeCicco, Daniel R. Ruthrauff, Scott Krauss, Jeffrey S. Hall
Coping with the cold: An ecological context for the abundance and distribution of rock sandpipers during winter in upper Cook Inlet, Alaska Coping with the cold: An ecological context for the abundance and distribution of rock sandpipers during winter in upper Cook Inlet, Alaska
Shorebirds are conspicuous and abundant at high northern latitudes during spring and summer, but as seasonal conditions deteriorate, few remain during winter. To the best of our knowledge, Cook Inlet, Alaska (60.6˚ N, 151.6˚ W), is the world’s coldest site that regularly supports wintering populations of shorebirds, and it is also the most northerly nonbreeding location for shorebirds in...
Authors
Daniel R. Ruthrauff, Robert E. Gill, T. Lee Tibbitts
Ecological correlates of variable organ sizes and fat loads in the most northerly-wintering shorebirds Ecological correlates of variable organ sizes and fat loads in the most northerly-wintering shorebirds
Shorebirds at northern latitudes during the nonbreeding season typically carry relatively large lipid stores and exhibit an up-regulation of lean tissues associated with digestion and thermogenesis. Intraspecific variation in these tissues across sites primarily reflects differences in environmental conditions. Rock (Calidris ptilocnemis (Coues, 1873)) and Purple (Calidris maritima...
Authors
Daniel R. Ruthrauff, Anne Dekinga, Robert E. Gill, R.W. Summers, Theunis Piersma
Intercontinental migratory connectivity and population structuring of Dunlins from western Alaska Intercontinental migratory connectivity and population structuring of Dunlins from western Alaska
The Dunlin (Calidris alpina) is a polytypic shorebird with complex patterns of distribution and migration throughout its holarctic range. We analyzed mark-re sighting data obtained between 1977 and 2010 from birds captured at two major staging areas in western Alaska to test the hypothesis that the migration patterns of Alaskan populations are a mixture of parallel and chain, similar to...
Authors
Robert E. Gill, Colleen M. Handel, Daniel R. Ruthrauff
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