Vegetation and goose nest data from Southampton Island, Nunavut ...
Ground cover within 1 m radius from the centre of goose nest bowls was visually estimated for into bins (trace, 1–5%, 5–25%, 25–50%, 50–75%, 75–95%, >95%) for each ground cover categories. Transects at East Bay were perpendicular to the south shore, using terrestrial vegetation at the high tide l...
| Main Authors: | , , |
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| Format: | Dataset |
| Language: | unknown |
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Canadian Cryospheric Information Network
2020
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| Online Access: | https://dx.doi.org/10.21963/13137 https://www.polardata.ca/pdcsearch/PDCSearch.jsp?doi_id=13137 |
| Summary: | Ground cover within 1 m radius from the centre of goose nest bowls was visually estimated for into bins (trace, 1–5%, 5–25%, 25–50%, 50–75%, 75–95%, >95%) for each ground cover categories. Transects at East Bay were perpendicular to the south shore, using terrestrial vegetation at the high tide line as “metre 0”. At South Bay transects extended in a cardinal direction from a randomly chosen prominent local feature such as a pond or river, into the surrounding vegetation. All transects were 1km in length traversing except TRCH2 was 500 m. Cover in a 10cm x 10cm area at each 1 m point along each transect was assessed visually. For points in which several cover categories co-occurred, all were separately noted; points with no vegetation were classified as appropriate into non-vegetation categories. A square quadrat (50 cm x 50 cm) divided into 10 cm x 10 cm cells was also used to quantify the occurrence of each plant species or cover class every 50 m along each transect; for the 500 m transect, quadrats were ... : We undertook intensive ground surveys of the plant communities in a multi-species goose breeding area at East Bay and South Bay on Southampton Island, Nunavut, Canada, in the summer of 2010. We chose the East Bay site because unpublished data, reports, and journals from studies in 1979 and 1980 (KFA) were available for comparison of some components of the ecosystem, providing a unique opportunity for us to describe changes in vegetation of this remote site over a 31-year period. This constitutes one of the longest histories of vegetation change available for an Arctic goose colony. We chose South Bay because a goose colony was established there after the 1979-1980 study and the site should provide a contrast to East Bay, which has been occupied by goose colonies for at least a century. We employed two different vegetation sampling schemes: nest site ground cover data, illustrating how the habitat selected by geese themselves has changed over the decades; and transect/quadrat sampling, providing an unbiased ... |
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