Data · dataset · 2012
Feeding ecology of the Greenland shark under different ice conditions
Listed in Borealis and Agri-environmental Research Data Dataverse — shown once because both records carry DOI 10.5683/sp3/lwaa6z
To date, five sampling trips to Cumberland Sound have been completed, three during times of open water (July-August 2007, 2008, 2009) and two during times of ice cover (April 2008, 2009).
Description
Preliminary results indicate that the Greenland shark is feeding at a high trophic position and on benthic and pelagic resources, based on chemical tracers. The Greenland shark appears to feed on seal during both open water and ice cover, and does not appear to target different resources with season based on chemical tracers.
However, some consumers, like ringed seals and predatory zooplankton appear to switch to a lower trophic level during open water, likely to exploit large number of Calanus copepods. Results from several satellite tags suggest that sharks are highly mobile, with regards to depth (i.e. vertical movement) and distance (i.e. horizontal movement). Based on our hierarchical models regarding turbot, we found a strong connection between environmental fluctuations and variations in fishery catch rates between 1987 and 2003.
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We hope to use the environmental predictors we were able to isolate in order to guide management decisions and improve efficiency of the Inuit fishery. The traditional knowledge survey revealed how Inuit make sense of the environment by using their generative logic product of extensive interaction with the arctic environment. To approach Inuit knowledge from this perspective becomes a platform to develop resource management strategies that encompass Inuit beliefs and values.
We are currently completing sample analysis for chemical tracers, and hope to soon better understand both temporal and spatial variability in the feeding behaviour of Greenland sharks and other consumers inhabiting Cumberland Sound.
Links
Where it is published
- Dataverse dataset page borealisdata.ca/dataset.xhtml?persistentId=doi%3A10.5683%2FSP3%2FLWAA6Z ↗
landing page · from borealisdata ca
- DOI doi.org/10.5683/sp3/lwaa6z ↗
DOI / persistent id · from borealisdata ca
Catalogue records · 1
- Dataverse API borealisdata.ca/api/datasets/:persistentId/?persistentId=doi%3A10.5683%2FSP3%2… ↗
metadata API · from borealisdata ca
Topics
- From keywords
- Chemistry · Climate · Climate · Computer Science & AI · Earth & Environmental Science · Earth & Environmental Science · Economics & Finance · Engineering · Humanities · Life Sciences · Life Sciences · Mathematics & Statistics · Medicine & Health · Ocean & Atmospheric Science · Ocean & Atmospheric Science · Social Science
Provenance · 2 source records, 22 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| Borealis | doi:10.5683/SP3/LWAA6Z | 10 d ago | JSON v1 |
| Agri-environmental Research Data Dataverse | doi:10.5683/SP3/LWAA6Z | 9 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].local:field:chemistry | mapping · borealisdata ca dataverse | connector:borealisdata_ca_dataverse@1.0.0 | /subjects |
| concepts[field].local:field:computer-science-ai | mapping · borealisdata ca dataverse | connector:borealisdata_ca_dataverse@1.0.0 | /subjects |
| concepts[field].local:field:earth-environmental | mapping · borealisdata ca dataverse | connector:borealisdata_ca_dataverse@1.0.0 | /subjects |
| concepts[field].local:field:earth-environmental | mapping · borealisdata ca | connector:borealisdata_ca@1.0.0 | /subjects |
| concepts[field].local:field:economics-finance | mapping · borealisdata ca dataverse | connector:borealisdata_ca_dataverse@1.0.0 | /subjects |
| concepts[field].local:field:engineering | mapping · borealisdata ca dataverse | connector:borealisdata_ca_dataverse@1.0.0 | /subjects |
| concepts[field].local:field:humanities | mapping · borealisdata ca dataverse | connector:borealisdata_ca_dataverse@1.0.0 | /subjects |
| concepts[field].local:field:life-sciences | mapping · borealisdata ca dataverse | connector:borealisdata_ca_dataverse@1.0.0 | /subjects |
| concepts[field].local:field:life-sciences | mapping · borealisdata ca | connector:borealisdata_ca@1.0.0 | /subjects |
| concepts[field].local:field:mathematics-statistics | mapping · borealisdata ca dataverse | connector:borealisdata_ca_dataverse@1.0.0 | /subjects |
| concepts[field].local:field:medicine-health | mapping · borealisdata ca dataverse | connector:borealisdata_ca_dataverse@1.0.0 | /subjects |
| concepts[field].local:field:ocean-atmospheric | mapping · borealisdata ca dataverse | connector:borealisdata_ca_dataverse@1.0.0 | /subjects |
| concepts[field].local:field:ocean-atmospheric | mapping · borealisdata ca | connector:borealisdata_ca@1.0.0 | /subjects |
| concepts[field].local:field:social-science | mapping · borealisdata ca dataverse | connector:borealisdata_ca_dataverse@1.0.0 | /subjects |
| concepts[subject].local:topic:climate | mapping · borealisdata ca dataverse | vocabulary-mapper@1.0.0 | keywords['Climate change'] |
| concepts[subject].local:topic:climate | mapping · borealisdata ca | vocabulary-mapper@1.0.0 | keywords['Climate change'] |
| created_date | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | |
| description | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | /description |
| publication_date | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | |
| title | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | /name |
| updated_date | source · borealisdata ca | connector:borealisdata_ca@1.0.0 | |
| version_label | source · borealisdata ca | connector:borealisdata_ca@1.0.0 |