9 Works

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: Free-living bacterial communities associated with tubeworm (Ridgeia piscesae) aggregations in contrasting diffuse flow hydrothermal vent habitats at the Main Endeavour Field, Juan de Fuca Ridge

Nathalie L. Forget & S. Kim Juniper
We systematically studied free-living bacterial diversity within aggregations of the vestimentiferan tubeworm Ridgeia piscesae sampled from two contrasting flow regimes (High Flow and Low Flow) in the Endeavour Hydrothermal Vents Marine Protected Area (MPA) on the Juan de Fuca Ridge (Northeast Pacific). Eight samples of particulate detritus were recovered from paired tubeworm grabs from four vent sites. Most sequences (454 tag and Sanger methods) were affiliated to the Epsilonproteobacteria, and the sulfur-oxidizing genus Sulfurovum was...

Data from: Molecular study of bacterial diversity within the trophosome of the vestimentiferan tubeworm Ridgeia piscesae

S. Kim Juniper, Maëva Perez & Nathalie L. Forget
A large proportion of the faunal biomass in hydrothermal vent ecosystems relies on symbiotic relationships, with bacteria as a source of nutrition. Whereas multiple symbioses have been observed in diverse vent hosts, siboglinid tubeworms have been thought to harbour a single endosymbiont phylotype affiliated to the Gammaproteobacteria. In the case of the Northeast Pacific vestimentiferan Ridgeia piscesae, two previous studies suggested the presence of more than one symbiont. The possibility of multiple, and possibly habitat-specific,...

Data from: Heavily hunted wolves have higher stress and reproductive steroids than wolves with lower hunting pressure

Heather Bryan, Judit Smits, Lee Koren, Paul Paquet, Marco Musiani, Katherine Wynne-Edwards, Paul C. Paquet, Heather M. Bryan, Judit E. G. Smits & Katherine E. Wynne-Edwards
1. Human-caused harassment and mortality (e.g. hunting) affects many aspects of wildlife population dynamics and social structure. Little is known, however, about the social and physiological effects of hunting, which might provide valuable insights into the mechanisms by which wildlife respond to human-caused mortality. To investigate physiological consequences of hunting, we measured stress and reproductive hormones in hair, which reflect endocrine activity during hair growth. Applying this novel approach, we compared steroid hormone levels in...

Data from: A year in hypoxia: epibenthic community responses to severe oxygen deficit at a subsea observatory in a coastal inlet

Marjolaine Matabos, Verena Tunnicliffe, S. Kim Juniper & Courtney Dean
Changes in ocean ventilation driven by climate change result in loss of oxygen in the open ocean that, in turn, affects coastal areas in upwelling zones such as the northeast Pacific. Saanich Inlet, on the west coast of Canada, is a natural seasonally hypoxic fjord where certain continental shelf species occur in extreme hypoxia. One study site on the VENUS cabled subsea network is located in the hypoxic zone at 104 m depth. Photographs of...

Data from: Testing a “genes-to-ecosystems” approach to understanding aquatic-terrestrial linkages

Gregory Crutsinger, Seth Rudman, Mariano Rodriguez-Cabal, Athena Mckown, Takuya Sato, Andrew M. MacDonald, Julian Heavyside, Armando Geraldes, Edmund Hart, Carri LeRoy, Rana El-Sabaawi, Athena D. McKown, Gregory M. Crutsinger, Seth M. Rudman, Mariano A. Rodriguez-Cabal, Edmund M. Hart, Carri J. LeRoy & Rana W. El-Sabaawi
A ‘genes-to-ecosystems’ approach has been proposed as a novel avenue for integrating the consequences of intraspecific genetic variation with the underlying genetic architecture of a species in order to shed light on the relationships among hierarchies of ecological organization (genes [RIGHTWARDS ARROW] individuals [RIGHTWARDS ARROW] communities [RIGHTWARDS ARROW] ecosystems). However, attempts to identify genes with major effect on the structure of communities and/or ecosystem processes have been limited and a comprehensive test of this approach...

Data from: The dorid nudibranchs Peltodoris lentiginosa and Archidoris odhneri as predators of glass sponges

Jackson W.F. Chu & Sally P. Leys
The dorid nudibranchs Peltodoris lentiginosa and Archidoris odhneri were found on glass sponges (Porifera, Hexactinellida) during remotely operated vehicle surveys of three reefs in the Strait of Georgia, British Columbia, Canada. Eight nudibranchs were sampled from 2009 to 2011. Identification of sponge spicules found in their gut and fecal contents confirmed the nudibranchs to be predators of the reef-forming hexactinellids Aphrocallistes vastus and Heterochone calyx, as well as of the demosponge Desmacella austini, which encrusts...

Data from: Multi-parametric study of behavioural modulation in demersal decapods at the VENUS cabled observatory in Saanich Inlet, British Columbia, Canada

M. Matabos, J. Aguzzi, K. Robert, C. Costa, P. Menesatti, J. B. Company, S. K. Juniper & S.K. Juniper
Understanding biological rhythms in benthic ecosystems and their modulation by habitat cycles has important implications for resource and ecosystem management. The recent development of permanent, multi-sensor seafloor observatories in deep-water environments provides opportunities for the in situ investigation of the behaviour of benthic organisms in relation to habitat variability. This paper describes a multi-disciplinary investigation at the VENUS observatory platform in Saanich Inlet, an intermittently anoxic fjord (Vancouver Island, Canada). A remotely operated digital camera...

Data from: Divergent immunity and energetic programs in the gills of migratory and resident Oncorhynchus mykiss

Ben J. Sutherland, Kyle C. Hanson, Johanna R. Jantzen, Ben F. Koop, Christian T. Smith & Ben J. G. Sutherland
Divergent life history strategies occur in steelhead or rainbow trout Oncorhynchus mykiss, and many populations produce both migrant (anadromous fish that move to the ocean after rearing) and resident (do not migrate and remain in fresh water) individuals. Mechanisms leading to each type are only partially understood; while the general tendency of a population is heritable, individual tendency may be plastic, influenced by local environment. Steelhead hatchery programmes aim to mitigate losses in wild stocks...

Registration Year

  • 2014
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Resource Types

  • Dataset
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Affiliations

  • University of Victoria
    9
  • University of Alberta
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  • Bar-Ilan University
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  • University of British Columbia
    1
  • Raincoast Conservation Foundation
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  • Kobe University
    1
  • University of Calgary
    1
  • The Evergreen State College
    1
  • Memorial University of Newfoundland
    1
  • United States Fish and Wildlife Service
    1