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Declining scaup populations: a retrospective analysis of long-term population and harvest survey data
We examined long-term databases concerning population status of scaup (lesser [Aythya
affinis] and greater scaup [A. marila] combined) and harvest statistics of lesser scaup to …
affinis] and greater scaup [A. marila] combined) and harvest statistics of lesser scaup to …
Waterbirds as indicators of ecosystem health in the coastal marine habitats of southern Florida: 1. Selection and justification for a suite of indicator species
The coastal marine environment is currently under threat from many anthropogenic
pressures that were identified by the MARES project. Indicators of ecosystem health are …
pressures that were identified by the MARES project. Indicators of ecosystem health are …
A method for investigating population declines of migratory birds using stable isotopes: origins of harvested lesser scaup in North America
Background Elucidating geographic locations from where migratory birds are recruited into
adult breeding populations is a fundamental but largely elusive goal in conservation biology …
adult breeding populations is a fundamental but largely elusive goal in conservation biology …
Declining scaup populations: issues, hypotheses, and research needs
The population estimate for greater (Aythya marila) and lesser (Aythya affinis) scaup
(combined) has declined dramatically since the early 1980s to record lows in 1998. The …
(combined) has declined dramatically since the early 1980s to record lows in 1998. The …
Nutrient Reserves of Lesser Scaup (Aythya Affinis) During Spring Migration in the Mississippi Flyway: A Test of the Spring Condition Hypothesis
The continental scaup population (Lesser [Aythya affinis] and Greater [A. marila] combined)
has declined markedly since 1978. One hypothesis for the population decline states that …
has declined markedly since 1978. One hypothesis for the population decline states that …
Population vulnerability to climate change linked to timing of breeding in boreal ducks
Identifying and understanding why traits make species vulnerable to changing climatic
conditions remain central problems in evolutionary and applied ecology. We used spring …
conditions remain central problems in evolutionary and applied ecology. We used spring …
A multi-scaled analysis of avian response to habitat amount and fragmentation in the Canadian dry mixed-grass prairie
Previous research has suggested that ducks and songbirds may benefit from prairie
landscapes that consist primarily of contiguous grasslands. However, the relative …
landscapes that consist primarily of contiguous grasslands. However, the relative …
Trace elements, organochlorines, polycyclic aromatic hydrocarbons, dioxins, and furans in lesser scaup wintering on the Indiana Harbor Canal
TW Custer, CM Custer, RK Hines, DW Sparks - Environmental Pollution, 2000 - Elsevier
During the winter of 1993–94, male lesser scaup (Aythya affinis) were collected on the
heavily polluted Indiana Harbor Canal (IHC), East Chicago, IN, USA, and examined for …
heavily polluted Indiana Harbor Canal (IHC), East Chicago, IN, USA, and examined for …
Amphipod densities and indices of wetland quality across the upper-Midwest, USA
Nutritional, behavioral, and diet data for lesser scaup (Aythya affinis [Eyton, 1838]) indicates
that there has been a decrease in amphipod (Gammarus lacustris [GO Sars, 1863] and …
that there has been a decrease in amphipod (Gammarus lacustris [GO Sars, 1863] and …
A comparison of auditory brainstem responses across diving bird species
There is little biological data available for diving birds because many live in hard-to-study,
remote habitats. Only one species of diving bird, the black-footed penguin (Spheniscus …
remote habitats. Only one species of diving bird, the black-footed penguin (Spheniscus …