Dataset specification
- Title: MarineBasis Nuuk - Benthic vegetation - Ascophyllum nodosum segment length
- Description: Nuuk basis monitoring of macroalgae and fauna – population dynamics of knotted wrack (Ascophyllum nodosum). Ascophyllum nodosum segment length. The dataset consist of annual (2012-2021) sampling of 20 Ascophyllum nodosum tips (actively growing, light brown), randomly sampled in the population in each of the tidal zones (upper, mid, lower) for the purpose of measuring annual tip growth. The tips were cut below the 3rd bladder and then cut into seperate segments/tip-sections (Outer tip incl. 1st bladder = year 0, below 1st bladder incl. 2nd bladder = year 1, below 2nd bladder incl. 3rd bladder = year 2). Each segment was measured to the nearest mm. From 2015, additional sampling of tips in the mid tidal zone from populations in two other sites in Kobbefjord were also included. Benthic vegetation:Benthic vegetation MarineBasis Nuuk:The MarineBasis programme collects physical, chemical and biological data from the Greenland coastal zone. Work is focused around three fjord systems, all influenced by glaciers connected to the Greenland Ice Sheet.
- DOI: 10.17897/4NJK-ZV13 - https://doi.org/10.17897/4NJK-ZV13
- Location/site: Kobbefjord - W Greenland - -51.38, 64.13 (lon-lat wgs84)
- Date span of the dataset: 2012-08-22 - 2022-08-31
Data originator, license and how to download the dataset
The dataset is a product of the Greenland Ecosystem Monitoring program (GEM): https://grid.ac/institutes/grid.507580.f. It is free and open data, licensed with terms of use under the Creative Commons CC-BY-SA license: https://creativecommons.org/licenses/by-sa/4.0/ When downloading you will automatically get a terms of use document, describing how to cite the data and other important information.
Download the dataset via this link (registration needed): http://data.g-e-m.dk/log-in/data-tables?doi=10.17897/4NJK-ZV13
Variables measured / columns in dataset
| ID | Name | Unit | Data Type | Description |
|---|---|---|---|---|
| http://data.g-e-m.dk/datasets?doi=10.17897/4NJK-ZV13&column=Date | Date | YYYY-MM-DD | Date | Sampling date |
| http://data.g-e-m.dk/datasets?doi=10.17897/4NJK-ZV13&column=Area | Area | Text | Text | Sampling area |
| http://data.g-e-m.dk/datasets?doi=10.17897/4NJK-ZV13&column=Year | Year | yyyy | Number | Year of sampling |
| http://data.g-e-m.dk/datasets?doi=10.17897/4NJK-ZV13&column=Site | Site | Text | Text | Sampling site |
| http://data.g-e-m.dk/datasets?doi=10.17897/4NJK-ZV13&column=Latitude | Latitude | Number | Number | Latitude WGS84, DD |
| http://data.g-e-m.dk/datasets?doi=10.17897/4NJK-ZV13&column=Longitude | Longitude | Number | Number | Longitude WGS84, DD |
| http://data.g-e-m.dk/datasets?doi=10.17897/4NJK-ZV13&column=Tidalzone | Tidalzone | Text | Text | Tidal zone |
| http://data.g-e-m.dk/datasets?doi=10.17897/4NJK-ZV13&column=Segment+(year) | Segment (year) | Number | Number | Tip-section: Outer tip incl. 1st bladder = year 0, below 1st bladder incl. 2nd bladder = year 1, below 2nd bladder incl. 3rd bladder = year 2 |
| http://data.g-e-m.dk/datasets?doi=10.17897/4NJK-ZV13&column=Avg+(cm) | Avg (cm) | Number | Number | Average length (cm) - measured to nearest mm. |
| http://data.g-e-m.dk/datasets?doi=10.17897/4NJK-ZV13&column=Std+(cm) | Std (cm) | Number | Number | Standard deviation (cm) |
| http://data.g-e-m.dk/datasets?doi=10.17897/4NJK-ZV13&column=N | N | Number | Number | Number of segments/tip-sections |
| http://data.g-e-m.dk/datasets?doi=10.17897/4NJK-ZV13&column=SE+(cm) | SE (cm) | Number | Number | Standard error (cm) |