Abby Powell, PhD (Former Employee)
Science and Products
Filter Total Items: 52
The Southeastern U.S. as a complex of use sites for nonbreeding rufa Red Knots: Fifteen years of band-encounter data The Southeastern U.S. as a complex of use sites for nonbreeding rufa Red Knots: Fifteen years of band-encounter data
Shorebirds have been banded for decades and monitoring programs have helped to accumulate large band-encounter datasets from across the globe; however, many of these datasets are left largely unused, particularly those collected by citizen scientists. These datasets can provide valuable insight into the migration and movement strategies of shorebirds and the threats they face throughout...
Authors
M.E. Tuma, Abby Powell
Factors limiting reproductive success of American Oystercatchers (Haematopus palliatus) in Florida's southern Big Bend region Factors limiting reproductive success of American Oystercatchers (Haematopus palliatus) in Florida's southern Big Bend region
Florida's Big Bend region hosts the second largest concentration of breeding American Oystercatchers in the state, but reproductive success is low. Nest site characteristics and predation were examined to determine their influence on survival of nests and broods at two areas in the southern Big Bend (Cedar Key and Barge Canal). The probability of a nest surviving in Cedar Key was low (x̄...
Authors
N. Vitale, J. Brush, Abby Powell
Loss of coastal islands along Florida’s Big Bend region: Implications for breeding American oystercatchers Loss of coastal islands along Florida’s Big Bend region: Implications for breeding American oystercatchers
Many coastal-dependent species have undergone large-scale population declines due to impacts from habitat loss, including American oystercatchers (Haematopus palliatus). Islands along the Big Bend region of Florida’s Gulf Coast provide important nesting habitat for oystercatchers, but reproductive success here is low and habitat degradation and loss are a major concern. To determine...
Authors
N. Vitale, J. Brush, Abby Powell
Does habitat partitioning by sympatric plovers affect nest survival? Does habitat partitioning by sympatric plovers affect nest survival?
The vertical structure and composition of vegetation can influence the quantity and quality of potential nesting sites for birds. Interspecific competition for high-quality nesting habitat may force some individuals into suboptimal habitat and lead to reduced reproductive success, eventually leading to changes in distribution or abundance. Large climate-mediated shifts in vegetation...
Authors
Kelly S Overduijn, Colleen M. Handel, Abby Powell
Temporal variation in genetic structure within the threatened spectacled eider Temporal variation in genetic structure within the threatened spectacled eider
We examined the genetic structure of the threatened spectacled eider 14–18 years after the initial assessment to evaluate the influence of population recovery on diversity. Concordant with the initial assessment, spectacled eiders were highly structured at mitochondrial (mt) DNA and lacked differentiation at microsatellite loci. The degree and spatial pattern of structure has changed at...
Authors
Sarah A. Sonsthagen, Christy Haughey, Matthew G. Sexson, Diana V Solovyeva, Margaret R. Petersen, Abby Powell
Energy intake rate influences survival of Black Oystercatcher Haematopus bachmani broods Energy intake rate influences survival of Black Oystercatcher Haematopus bachmani broods
Black Oystercatchers Haematopus bachmani, a species of conservation concern, depend on marine intertidal prey resources. We examined diet, feeding rates, growth, and survival of Black Oystercatcher broods in southcentral Alaska, 2013-2014. To determine the importance of diet on brood survival, we modeled daily survival rates of broods as a function of energy intake rate and other...
Authors
B.H. Robinson, L.M. Phillips, Abby Powell
Science and Products
Filter Total Items: 52
The Southeastern U.S. as a complex of use sites for nonbreeding rufa Red Knots: Fifteen years of band-encounter data The Southeastern U.S. as a complex of use sites for nonbreeding rufa Red Knots: Fifteen years of band-encounter data
Shorebirds have been banded for decades and monitoring programs have helped to accumulate large band-encounter datasets from across the globe; however, many of these datasets are left largely unused, particularly those collected by citizen scientists. These datasets can provide valuable insight into the migration and movement strategies of shorebirds and the threats they face throughout...
Authors
M.E. Tuma, Abby Powell
Factors limiting reproductive success of American Oystercatchers (Haematopus palliatus) in Florida's southern Big Bend region Factors limiting reproductive success of American Oystercatchers (Haematopus palliatus) in Florida's southern Big Bend region
Florida's Big Bend region hosts the second largest concentration of breeding American Oystercatchers in the state, but reproductive success is low. Nest site characteristics and predation were examined to determine their influence on survival of nests and broods at two areas in the southern Big Bend (Cedar Key and Barge Canal). The probability of a nest surviving in Cedar Key was low (x̄...
Authors
N. Vitale, J. Brush, Abby Powell
Loss of coastal islands along Florida’s Big Bend region: Implications for breeding American oystercatchers Loss of coastal islands along Florida’s Big Bend region: Implications for breeding American oystercatchers
Many coastal-dependent species have undergone large-scale population declines due to impacts from habitat loss, including American oystercatchers (Haematopus palliatus). Islands along the Big Bend region of Florida’s Gulf Coast provide important nesting habitat for oystercatchers, but reproductive success here is low and habitat degradation and loss are a major concern. To determine...
Authors
N. Vitale, J. Brush, Abby Powell
Does habitat partitioning by sympatric plovers affect nest survival? Does habitat partitioning by sympatric plovers affect nest survival?
The vertical structure and composition of vegetation can influence the quantity and quality of potential nesting sites for birds. Interspecific competition for high-quality nesting habitat may force some individuals into suboptimal habitat and lead to reduced reproductive success, eventually leading to changes in distribution or abundance. Large climate-mediated shifts in vegetation...
Authors
Kelly S Overduijn, Colleen M. Handel, Abby Powell
Temporal variation in genetic structure within the threatened spectacled eider Temporal variation in genetic structure within the threatened spectacled eider
We examined the genetic structure of the threatened spectacled eider 14–18 years after the initial assessment to evaluate the influence of population recovery on diversity. Concordant with the initial assessment, spectacled eiders were highly structured at mitochondrial (mt) DNA and lacked differentiation at microsatellite loci. The degree and spatial pattern of structure has changed at...
Authors
Sarah A. Sonsthagen, Christy Haughey, Matthew G. Sexson, Diana V Solovyeva, Margaret R. Petersen, Abby Powell
Energy intake rate influences survival of Black Oystercatcher Haematopus bachmani broods Energy intake rate influences survival of Black Oystercatcher Haematopus bachmani broods
Black Oystercatchers Haematopus bachmani, a species of conservation concern, depend on marine intertidal prey resources. We examined diet, feeding rates, growth, and survival of Black Oystercatcher broods in southcentral Alaska, 2013-2014. To determine the importance of diet on brood survival, we modeled daily survival rates of broods as a function of energy intake rate and other...
Authors
B.H. Robinson, L.M. Phillips, Abby Powell