A5020100894- Fish Ecology and Management Studies
- Species Distribution and Climate Change
- Wildlife Ecology and Conservation
- Genetic diversity and population structure
- Genetic and phenotypic traits in livestock
- Morphological variations and asymmetry
- Marine and fisheries research
- Physiological and biochemical adaptations
- Amphibian and Reptile Biology
- Evolutionary Game Theory and Cooperation
- Animal Behavior and Reproduction
- Biomimetic flight and propulsion mechanisms
- Water Quality Monitoring Technologies
- Fish Biology and Ecology Studies
- Evolution and Science Education
- Evolution and Genetic Dynamics
- Ecology and Vegetation Dynamics Studies
- Ichthyology and Marine Biology
- Underwater Vehicles and Communication Systems
- Lattice Boltzmann Simulation Studies
- Identification and Quantification in Food
McGill University
2020-2025
Hólar University College
2023-2025
Memorial University of Newfoundland
2022
William & Mary
2017-2018
Williams (United States)
2017-2018
Populations must continuously respond to environmental change or risk extinction. These responses can be measured as phenotypic rates of change, which allow researchers predict their contemporary evolutionary responses. In 1999, a database in wild populations was compiled. Since then, have used (and expanded) this examine the function features study system (i.e., population set populations, given species, that experienced specific driver disturbance), traits, and methodological approaches....
Wild populations must continuously respond to environmental changes or they risk extinction. Those responses can be measured as phenotypic rates of change, which allow us predict contemporary adaptive responses, some are evolutionary. About two decades ago, a database change in wild was compiled. Since then, researchers have used (and expanded) this examine specific types human disturbance. Here, we update the by adding 5675 new estimates change. Using newer version data base, now containing...
Abstract Eco‐evolutionary experiments are typically conducted in semi‐unnatural controlled settings, such as mesocosms; yet inferences about how evolution and ecology interact the real world would surely benefit from natural uncontrolled settings. Opportunities for rare but do arise context of restoration ecology—where different “types” a given species can be introduced into “replicate” locations. Designing requires wrestling with consequential questions. (Q1) Which specific focal should to...
Vortical cross-step filtration in suspension-feeding fish has been reported recently as a novel mechanism, distinct from other biological and industrial processes. Although crossflow passing over backward-facing steps generates vortices that can suspend, concentrate, transport particles, the morphological factors affecting this vortical flow have not identified previously. In our 3D-printed models of oral cavity for ram fish, angle step with respect to model's dorsal midline affected vortex...
Thermal stratification is common in lentic freshwater systems, and has extensive effects on ecosystem function the interactions between aquatic organisms their surroundings. Although thermal regimes temperate systems are well-characterized, small arctic subarctic lakes ponds can have irregular regimes, conditions leading to mixing less predictable. Nevertheless, they be important habitats for northern fish species, ecological processes, including dissolved oxygen dynamics, may determine...
Assessing bird diversity and associated ecological patterns in remote freshwater lakes presents challenges that require innovative approaches. Here we evaluated the utility of time-lapse images from camera traps for this purpose using two Haida Gwaii, British Columbia, Canada. We consider four key factors: 1) manual versus automated image processing, 2) data validation through in-person observations, 3) ability to capture known patterns, 4) variation sampling effort. find (1) MegaDetector, a...
Ram suspension-feeding fishes swim with an open mouth to force water through the oral cavity and extract prey items that are too small be pursued individually. Recent research has indicated that, rather than using a dead-end mechanical sieve, American paddlefish (Polyodon spathula Walbaum) employ vortical cross-step filtration. In this filtration mechanism, flow is generated posterior branchial arches organizes crossflow processes into spatial structure across gill rakers. Despite known...
The calamity of amphibian population declines has preoccupied the thoughts many biologists for past 30 yr. Because amphibians provide multiple essential ecosystem services at all life stages, threats associated with their decline are likely also to be and interconnected. No single cause yet explained declines; one potential threat after another been investigated in isolation found explain only a piece larger puzzle. A more holistic, synergistic approach is needed understand how, when,...
AbstractPopulations are subjected to diverse environmental conditions that affect fitness and induce evolutionary or plastic responses, resulting in phenotypic divergence. Some authors contend such divergence is concentrated along a single major axis of trait covariance even if does not lead populations directly toward optimum. Other argue can occur readily many phenotype axes at the same time. We use threespine stickleback (
Reductions in a limiting nutrient might be expected to necessitate compromises the functional traits that depend on nutrient; yet populations existing locations with low levels of such nutrients often do not show degradation traits. Indeed, logperch (Percina caprodes), pumpkinseed sunfish (Lepomis gibbosus) and yellow perch (Perca flavescens) residing low-calcium water Upper St. Lawrence River were all previously found maintain scale calcium comparable those conspecific high-calcium water....
Abstract Freshwater populations of threespine stickleback ( Gasterosteus aculeatus ) have diverged from their marine ancestor and show extensive variation among throughout most range. However, phenotypes freshwater the east coast North America does not appear to demonstrate variability observed rest species’ The relative young age American may explain apparent lack variability. On other hand, in this part range received level attention as its low simply reflect data for region. We examined...
Abstract Recent methodological advances have led to a rapid expansion of evolutionary studies employing three‐dimensional landmark‐based geometric morphometrics (GM). GM methods generally enable researchers capture and compare complex shape phenotypes, quantify their relationship environmental gradients. However, some recent shown that the common, inexpensive, relatively two‐dimensional can distort important information produce misleading results because they cannot variation in depth ( Z )...
The threespine stickleback (Gasterosteus aculeatus) is a small, mesopredatory fish that widespread in coastal regions of the northern hemisphere. Although this species does not directly support commercial or recreational fishery, often serve as important prey for larger do fisheries, well many bird species. studied extensively model organism evolutionary biology, behavioral ecology, genomics, and numerous related subfields, research relies heavily on populations from Pacific North America...
Abstract We describe the antipredator armor of a unique population threespine stickleback ( Gasterosteus aculeatus ) from Narrows Pond in western Newfoundland and compare traits for this to nearby populations marine freshwater systems. After standardizing length, are shallower bodied have shorter dorsal spines than other populations. Also, though number plates is greater typical low-plate morphs, size lateral much smaller. Finally, most (nearly 75% sampled individuals) do not pelvic...
ABSTRACT Wild populations must continuously adapt to environmental changes or they risk extinction. Such adaptations can be measured as phenotypic rates of change and allow us predict patterns contemporary evolutionary change. About two decades ago, a dataset in wild was compiled. Since then, researchers have used (and expanded) this look at microevolutionary processes relation specific types human disturbances. Here, we updated the adding 5675 estimates it revisit established Using newer...
Abstract In nature, populations are subjected to a wide variety of environmental conditions that affect fitness and induce adaptive or plastic responses in traits, resulting phenotypic divergence between populations. The dimensionality divergence, however, remains contentious. At the extremes, some contend diverge along single axis trait covariance with greatest availability heritable variation, even if this does not lead population directly its optimum. Those at other extreme argue...