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Shrubification impacts on berry productivity at Umiujaq, Nunavik

Metadata

File Identifier: 12553_iso.xml
Metadata Language: eng; CAN
: utf8
Resource Type: Dataset
Responsible Party: Individual Name: Polar Data Catalogue Organisation Name: Canadian Cryospheric Information Network Role: Point Of Contact Contact Info: Voice: (519) 888-4567 x32689 Street Address: 200 University Avenue West, University of Waterloo City: Waterloo Province/State: Ontario Postal Code/ZIP: N2L 3G1 Country: Canada E-Mail Address: pdc@uwaterloo.ca
Metadata Date: 2016-01-13
Metadata Standard Name: North American Profile of ISO 19115:2003
Metadata Standard Version: 2009-01-01

Data Identification

Abstract: 41 large plots were established, varying in terms of moisture, cover and height of erect shrubs and in abundance and productivity of three berry species (Vaccinium vitis-idea L., Vaccinium L. uliginosum, Empetrum nigrum L.). A sub-sample of 15 quadras (70 cm x 70 cm) was conducted to evaluate the cover of erect shrubs, berries and various strata: Herbaceous, Rock, Water, Ground, Litter, Foam, Lichen, and Low shrub (0-50 cm), medium (50-100 cm) and high (> 100 cm). The fruits were harvested in 10 quadras (70 cm x 70 cm) in each sites and have subsequently been counted and weighed (fresh and dried) by ripening stage (1-Not ripe, 2-In ripening, 3-Ripe, 4-unsustainable fruit / prominent abortion). Several environmental variables were taken: slope, aspect, height of shrub cover and some soil characteristics (total nitrogen, total phosphorus, pH, moisture and temperature (time for 1 year)). In the same project, a paired approach was used to determine the impact of the presence, cover and height of erect shrubs. 402 pairs were made in August 2015 near Umiujaq. Each pair consisted of 4 forties (70 cm x 70 cm) arranged on a transect to cover three different conditions: under cover, open environment, external and internal margin of shrub patches. In each quadras shrubs cover (total and by species) and the recovery of berry species were assessed. In each quadra, a sub-sample of fruit was collected in 4 circles of 10 cm diameter always placed in the same locations. Then the fruits were weighed (fresh and dried) and sorted by maturity. The slope, soil type, type of environment, orientation of the transect and the average height of the shrub cover were also noted.
Purpose: In the context of current global warming, the tundra vegetation near treeline is changing. In places, the erect shrub layer has increased markedly transforming open habitats into shrublands. Such changes alter the composition, structure and dynamic of plant communities. Competition for light and nutrients can become stronger and reduce the growth and reproduction of less competitive plant species such as berry-producing shrubs. A recent study demonstrated the significant increase in shrub cover (> 20%) between 1994 and 2010 near the community of Umiujaq, Nunavik. Residents of the community are also noticing changes in vegetation and these sometimes affect their berry picking habits. A decrease in productivity of berries could have significant impacts on northern people for whom berry picking is an important activity. It could also impact animal species, such as black bear (Ursus americanus), that feed on them. The purpose of this project was to determine which environmental variables (including presence, cover and height of erect shrubs) promote fruit production for the three berry species.
Language: eng; CAN
Citation:
Contact Info: Title: Shrubification impacts on berry productivity at Umiujaq, Nunavik Date: Date: 2016-01-13 Date Type: Publication Date Individual Name: Lévesque, Esther Role: Principal Investigator Individual Name: Lussier, Isabelle Role: Individual Name: Boudreau, Stéphane Role:
Point Of Contact:
Individual Name: Polar Data Catalogue Organisation Name: Canadian Cryospheric Information Network Role: Point Of Contact Contact Info: Voice: (519) 888-4567 x32689 Street Address: 200 University Avenue West, University of Waterloo City: Waterloo Province/State: Ontario Postal Code/ZIP: N2L 3G1 Country: Canada E-Mail Address: pdc@uwaterloo.ca Online Resource: polardata.ca
Topic Category: Environment and Conservation
Keyword Collection:
Keyword: Berry picking Keyword: Berry productivity Keyword: Climate change Keyword: Food Keyword: Nunavik Keyword: Shrubification Keyword: Shrubs Keyword: Umiujaq Associated Thesaurus: Polar Data Catalogue Thesaurus (Canada) Keyword: Umiujaq, Nunavik, Québec, Canada
Spatial Extent:
West Bounding Longitude: -76.6 East Bounding Longitude: -76.4 North Bounding Latitude: 56.6 South Bounding Latitude: 56.5
Legal Constraints:
Access Constraints: Other Restrictions Use Constraints: Other Restrictions Other Constraints: Terms of Use of the Polar Data Catalogue: https://www.polardata.ca/pdcinput/public/termsofuse

Distribution

Distribution Format:
Format Name: Digital file Format Version: 1.0
Distributor:
Distributor Contact: Individual Name: Polar Data Catalogue Organisation Name: Canadian Cryospheric Information Network Role: Distributor Contact Info: Voice: (519) 888-4567 x32689 Street Address: 200 University Avenue West, University of Waterloo City: Waterloo Province/State: Ontario Postal Code/ZIP: N2L 3G1 Country: Canada E-Mail Address: pdc@uwaterloo.ca

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