6 Works

Data from: Bay-scale patterns in the distribution, aggregation and spatial variability of larvae of benthic invertebrates

Remi M. Daigle, Anna Metaxas, Brad DeYoung & RM Daigle
This study aimed to investigate mechanisms of pattern formation in the larval distributions of benthic invertebrates by relating the spatial and temporal variability in the larval distributions to that in physical and biological variables, such as temperature, salinity, fluorescence and current velocity. Larvae were sampled at 11 sites on 7-8, and 11-12 Aug 2008 and at 16 sites on Aug 2-4, 2009, with a 200-μm plankton ring net (0.75-m diameter) towed for 5 min at...

Data from: Season and site fidelity determine home range of dispersing and resident juvenile Greenland cod (Gadus ogac) in a Newfoundland fjord

Melanie Shapiera, Robert S. Gregory, Corey J. Morris, Curtis J. Pennell, Paul V. R. Snelgrove, RS Gregory, CJ Morris, CJ Pennell & PVR Snelgrove
We used acoustic telemetry to track age 1 juvenile Greenland cod Gadus ogac in Newman Sound, Newfoundland, from October 2010 to November 2012, in 2 consecutive 1 yr experiments. Using single (Year 1) and reciprocal (Year 2) transplant study designs, we investigated seasonal dispersal, home range area, and potential homing behaviour between coves ~3.5 km apart. We tracked individuals moving at metre to kilometre scales, using a network of 26 to 32 hydrophones. We converted...

Data from: Assessing risks of invasion through gamete performance: farm Atlantic salmon sperm and eggs show equivalence in function, fertility, compatibility and competitiveness to wild Atlantic salmon

Sarah E. Yeates, Sigurd Einum, William V. Holt, Ian A. Fleming & Matthew J. G. Gage
Adaptations at the gamete level (a) evolve quickly, (b) appear sensitive to inbreeding and outbreeding and (c) have important influences on potential to reproduce. We apply this understanding to problems posed by escaped farm salmon and measure their potential to reproduce in the wild. Farm Atlantic salmon (Salmo salar) are a threat to biodiversity, because they escape in large numbers and can introgress, dilute or disrupt locally adapted wild gene pools. Experiments at the whole...

Data from: Assessing the in situ fertilization status of two marine copepod species, Temora longicornis and Eurytemora herdmani; how common are unfertilized eggs in nature?

Rachel S. Lasley-Rasher, Andrew M. Kramer, Victoria Burdett-Coutts & Jeannette Yen
We utilized an egg staining technique to measure the in situ fertilization success of two marine copepod species, Temora longicornis and Eurytemora herdmani from May to October 2008 in coastal Maine and correlated fertilization success with environmental conditions in their habitat. T. longicornis is a free spawning species that releases eggs into the ambient seawater after mating. In contrast, E. herdmani carries eggs in an egg sac until they hatch. The proportion of fertilized eggs...

Data from: Mapping coral and sponge habitats on a shelf-depth environment using multibeam sonar and ROV video observations: Learmonth Bank, northern British Columbia, Canada

Bárbara M. Neves, Cherisse Du Preez & Evan Edinger
Efforts to locate and map deep-water coral and sponge habitats are essential for the effective management and conservation of these vulnerable marine ecosystems. Here we test the applicability of a simple multibeam sonar classification method developed for fjord environments to map the distribution of shelf-depth substrates and gorgonian coral- and sponge-dominated biotopes. The studied area is a shelf-depth feature Learmonth Bank, northern British Columbia, Canada and the method was applied aiming to map primarily non-reef...

Data from: Non-climatic constraints on upper elevational plant range expansion under climate change

Carissa D. Brown & Mark Vellend
We are limited in our ability to predict climate-change-induced range shifts by our inadequate understanding of how non-climatic factors contribute to determining range limits along putatively climatic gradients. Here, we present a unique combination of observations and experiments demonstrating that seed predation and soil properties strongly limit regeneration beyond the upper elevational range limit of sugar maple, a tree species of major economic importance. Most strikingly, regeneration beyond the range limit occurred almost exclusively when...

Registration Year

  • 2014
    6

Resource Types

  • Dataset
    6

Affiliations

  • Memorial University of Newfoundland
    6
  • Université de Sherbrooke
    1
  • University of Georgia
    1
  • Dalhousie University
    1
  • Georgia Institute of Technology
    1
  • University of East Anglia
    1
  • Fisheries and Oceans Canada
    1
  • Norwegian Institute for Nature Research
    1
  • University of Victoria
    1
  • University of Sheffield
    1