Citation:

PANGAEA.974506 (dataset in review)

Name: Autotrophic community composition based on chlorophyll-a concentrations in lakes and streams in South Greenland in August 2022
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Biofilms; freshwater; Greenland; water chemistry

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Abstract:

This dataset contains measurements of physico-chemical parameters, biofilm, and watershed characteristics from subarctic lakes and streams in the Narsaq area, Greenland, collected in August 2022. Water samples were collected and analyzed for temperature, conductivity, alkalinity, and nutrient concentrations. Biofilm samples were collected from stones, with chlorophyll a (Chl a), ash-free dry weight (AFDW), and carbon-to-nitrogen (C:N) ratios measured. Algal pigments were analyzed using HPLC for taxonomic composition. Watershed delineation was performed using a digital elevation model (DEM), and vegetation greenness was quantified via the normalized difference vegetation index (NDVI) using Sentinel-2 satellite imagery. This dataset contributes to understanding the environmental drivers of biofilm biomass and community composition in Arctic freshwater ecosystems.

Keyword(s):

Biofilms; freshwater; Greenland; water chemistry

Funding:

Carlsberg Foundation, grant/award no. CF19-0436: Back to the future for lakes and streams at "Erik den Rødes land" (West Greenland)

H2020 Marie Skłodowska-Curie Actions (MSCA), grant/award no. 801199: RECORD: An anthropogenic archive of plastic pollution in Greenland

Coverage:

Median Latitude: 60.940082 * Median Longitude: -45.999818 * South-bound Latitude: 60.867460 * West-bound Longitude: -46.083300 * North-bound Latitude: 60.980690 * East-bound Longitude: -45.930770

Date/Time Start: 2022-08-04T00:00:00 * Date/Time End: 2022-08-14T00:00:00

Event(s):

Narsaq_L003 (Lake) * Latitude: 60.867460 * Longitude: -45.947300 * Date/Time: 2022-08-10T00:00:00 * Location: Greenland * Campaign: * Basis: Sampling on land * Method/Device: Water sample (WS)

Narsaq_L010 (Lake) * Latitude: 60.869700 * Longitude: -45.954360 * Date/Time: 2022-08-10T00:00:00 * Location: Greenland * Campaign: * Basis: Sampling on land * Method/Device: Water sample (WS)

Narsaq_L080 (Lake) * Latitude: 60.940850 * Longitude: -46.083300 * Date/Time: 2022-08-12T00:00:00 * Location: Greenland * Campaign: * Basis: Sampling on land * Method/Device: Water sample (WS)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Christoffersen, Kirsten Seestern
2	DATE/TIME	Date/Time		Christoffersen, Kirsten Seestern		Geocode
3	LATITUDE	Latitude		Christoffersen, Kirsten Seestern		Geocode
4	LONGITUDE	Longitude		Christoffersen, Kirsten Seestern		Geocode
5	Location type	Loc type		Christoffersen, Kirsten Seestern
6	Sample ID	Sample ID		Christoffersen, Kirsten Seestern
7	Algae assemblage	Algae		Christoffersen, Kirsten Seestern		Group
8	Chlorophyll a	Chl a	µg/cm²	Christoffersen, Kirsten Seestern	High Performance Liquid Chromatography (HPLC)

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

204 data points

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Datasets with similar metadata

Moedt, SM; Christoffersen, KS; Westergaard-Nielsen, A et al. (2024): Biofilm characteristics in streams located in Qeqertarsuaq and Narsaq, Greenland. https://doi.org/10.1594/PANGAEA.973239
Moedt, SM; Christoffersen, KS; Westergaard-Nielsen, A et al. (2024): Water chemistry and catchment parameters of streams located in three geographical areas in Greenland. https://doi.org/10.1594/PANGAEA.973238
Moedt, SM; Christoffersen, KS; Westergaard-Nielsen, A et al. (2024): Epilithic biofilm in streams located in three geographical areas in Greenland. https://doi.org/10.1594/PANGAEA.973237