A5047093291- Marine and coastal plant biology
- Marine Biology and Ecology Research
- Avian ecology and behavior
- Marine and fisheries research
- Marine Bivalve and Aquaculture Studies
- Fish Ecology and Management Studies
- Marine animal studies overview
- Isotope Analysis in Ecology
- Coastal wetland ecosystem dynamics
- Wildlife Ecology and Conservation
- Aquatic Invertebrate Ecology and Behavior
- Species Distribution and Climate Change
- Rangeland and Wildlife Management
- Marine and coastal ecosystems
- Ecology and Vegetation Dynamics Studies
- Animal Behavior and Reproduction
- Crustacean biology and ecology
- Coral and Marine Ecosystems Studies
- Soil and Water Nutrient Dynamics
- Wildlife-Road Interactions and Conservation
- Animal Behavior and Welfare Studies
- Mollusks and Parasites Studies
- Tropical and Extratropical Cyclones Research
- Environmental DNA in Biodiversity Studies
- Recycling and Waste Management Techniques
Mount Allison University
2015-2024
Environment and Climate Change Canada
2023
Bridge University
2023
University of British Columbia
2023
University of New Brunswick
2001-2010
University of Guelph
1999-2000
Taylor, P. D., T. L. Crewe, S. A. Mackenzie, D. Lepage, Y. Aubry, Z. Crysler, G. Finney, C. M. Francis, Guglielmo, J. Hamilton, R. Holberton, H. Loring, W. Mitchell, Norris, Paquet, Ronconi, Smetzer, Smith, Welch, and B. K. Woodworth. 2017. The Motus Wildlife Tracking System: a collaborative research network to enhance the understanding of wildlife movement. Avian Conservation Ecology 12(1):8. https://doi.org/10.5751/ACE-00953-120108
Molecular scatology and next-generation sequencing identified previously unknown linkages among ecosystems in the diet of Semipalmated Sandpipers (Calidris pusilla) Bay Fundy, Canada. During their annual migratory stopover, birds consumed a wider range prey items than reported, which suggests that they are not selecting for amphipod Corophium volutator acting as generalist foragers. Our analysis several novel items—arachnids, crabs, bivalves, terrestrial freshwater insect species,...
Zebra mussels (Dreissena polymorpha) are a novel and abundant potential food source for several species of diving ducks in the Great Lakes region. Using predator exclusion cages, behavioral observations, analyses duck gizzard contents, we examined predator—prey relationship between zebra their predators during fall migratory period Lake Erie at Point Pelee, Ontario. Diving feeding on area reduced mussel biomass by 57% heaviest feeding, but had no measurable impact numbers. Birds were...
We conclude that the heat shock response is enhanced in juvenile compared with adult rainbow trout, Oncorhynchus mykiss . have shown magnitude of inducible response, as measured by increases protein (Hsp) Hsp70 significantly greater hearts fingerling than trout following an acute (1 h) stress at 25 °C. Juvenile fish also express higher levels constitutive Hsps (Hsc70, Hsp90) their tissues, possibly reflecting rates synthesis and increased chaperone function this early life stage. This robust...
During its fall migration stopover on mudflats in the upper Bay of Fundy, Canada, Semipalmated Sandpiper (Calidris pusilla) is thought to feed primarily amphipod Corophium volutator (mudshrimp). Sandpipers typically use a peck-probe foraging strategy and, until recently, there had been little evidence variability or opportunism their habits during this stopover. From 2006 2008 we recorded data sandpipers' behavior and food availability at three commonly used mudflats. Behavior varied...
Top-down, bottom-up, middle-out and abiotic factors are usually viewed as main forces structuring biological communities, although assessment of their relative importance, in a single study, is rarely done. We quantified, using multivariate methods, associations between biotic (top-down, bottom-up middle-out) variables infaunal population/community variation on intertidal mudflats the Bay Fundy, Canada, over two years. Our analysis indicated that spatial structural like site plot accounted...
Predation and disturbance have been well studied in intertidal communities. However, the impact of vertebrate predators, particularly waterfowl, has only infrequently determined long-term studies. Using predator exclusion cages simulated abiotic disturbance, I direct indirect effects predation by Common Eiders (Somateria mollissima) on an mussel bed community Passamaquoddy Bay, New Brunswick, Canada. fed heavily blue mussels (Mytilus edulis), dominant invertebrate present, reducing their...
Semipalmated Sandpipers ( Calidris pusilla (L., 1766)) use the upper Bay of Fundy, Canada, as a critical stopover site during their annual fall migration to wintering grounds in South America. While area, they feed extensively on mudflat invertebrates. Historically amphipod Corophium volutator (Pallas, 1766) has been thought make up majority diet. However, we have recently observed flexibility foraging behaviour and prey selection by sandpipers. The extent this current diet composition is...
We examined biotic and abiotic variables on the expansive intertidal mudflats of upper Bay Fundy, Canada, at 8 geographically separate sites over 2 years (2009–2011). Invertebrate density, surface density primary producers (mainly diatoms, measured as chlorophyll-a concentration), shorebird- fish-foraging activity, sediment properties varied considerably through time space. Dissimilarity in invertebrate community between consecutive sampling rounds was lower during peaks richness...
Abstract Long-distance migrants are assumed to be more time-limited during the pre-breeding season compared post-breeding season. Although breeding-related time constraints may absent post-breeding, additional factors such as predation risk could lead that were previously underestimated. By using an automated radio telemetry system, we pre- and movements of long-distance migrant shorebirds on a continent-wide scale. From 2014 2016, deployed transmitters 1,937 individuals 4 shorebird species...
Sprague, A. J., D. J. Hamilton, and W. Diamond. 2008. Site safety food affect movements of Semipalmated Sandpipers (Calidris pusilla) migrating through the upper Bay Fundy. Avian Conservation Ecology - Écologie et conservation des oiseaux 3(2): 4.http://dx.doi.org/10.5751/ACE-00252-030204
We studied size-selective predation by Common Eiders (Somateria mollissima) feeding on blue mussels (Mytilus edulis). Selection varied with location, season, and prey availability, for the most part ducks preferred smaller than those that would have been energetically profitable a per basis. tested predictions from two related hypotheses concerning optimal selection: (1) shell-mass minimization hypothesis, which states predators select food minimizes shell ingestion, as opposed to maximizing...
The upper Bay of Fundy is a critical staging area for migrating semipalmated sandpipers (Calidris pusilla), which feed extensively on the amphipod Corophium volutator. Recent changes in distributions birds around bay have generated interest understanding factors that influence shorebirds' habitat use. To examine some these factors, we surveyed four mud flats during summer 2000. Abundance shorebirds and density C. volutator snails (Ilyanassa obsoleta) were assessed two focused areas...
The scale of variation in population densities and other demographic variables is an important consideration the design interpretation experiments sampling programs. Here, we studied spatial temporal populations Corophium volutator, intertidal amphipod that most abundant macro-invertebrate on mudflats upper Bay Fundy, Canada. Variables were quantified included density (peaked mid-summer at |$10,000{\text{s per m}}^2$|), proportion juvenile (an index structure), sex ratio (female-biased...
Abstract We compiled a >50‐year record of morphometrics for semipalmated sandpipers ( Calidris pusilla ), shorebird species with Nearctic breeding distribution and intercontinental migration to South America. Our data included >57,000 individuals captured 1972–2015 at five locations three major stopover sites, plus 139 museum specimens collected in earlier decades. Wing length increased by ca. 1.5 mm (>1%) prior 1980, followed decrease 3.85 (nearly 4%) over the subsequent 35 years....