Dataset specification
- Title: BioBasis Nuuk - Vegetation - Fluorescence of vegetation
- Description: The effect of increased UV-B radiation on plant stress is monitored indirectly by measuring chlorophyll fluorescence in three series of plots: Controls, plots with a filter excluding UV-B, and filter controls with a film without exclusion of UV-B. Measurements of chlorophyll fluorescence are carried out on Betula nana and Vaccinium uliginosum in a mesic dwarf shrub heath dominated by Empetrum nigrum and with B. nana and V. uliginosum as subdominant species. For further details, please refer to the newest BioBasis manual available at the website. Vegetation:Vegetation BioBasis Nuuk:The BioBasis programme monitors the dynamics of organisms and biological processes in the terrestrial and limnic ecosystems at Zackenberg and Nuuk. The BioBasis programme plays a central role in the development and implementation of the Circumpolar Biodiversity Monitoring Programme (CBMP) http://www.caff.is/monitoring across the Arctic.
- DOI: 10.17897/SD1R-RF39 - https://doi.org/10.17897/SD1R-RF39
- Location/site: Permanent plots - -51.38, 64.13 (lon-lat wgs84)
- Date span of the dataset: 2008-07-22 - 2017-08-09
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/SD1R-RF39
Variables measured / columns in dataset
| ID | Name | Unit | Data Type | Description |
|---|---|---|---|---|
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Date | Date | Text | Text | Date of measurement |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Time | Time | Hour | Time | Time of measurement (Local time, UTC -2h summer time, UTC -3h winter time) |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Species | Species | Text | Text | Species Betula nana or Vaccinium uliginosum |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Plot | Plot | Number | Number | Plot ID |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Treatment | Treatment | Text | Text | Controls (C), plots with a filter excluding UV-B (F), and filter controls with film without exclusion of UV-B (B). |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Record+No | Record No | Number | Number | Record number |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=P.+Light | P. Light | ?mol m-2 s-1 | Number | Pre-illumination intensity |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=P.+Dur.(sec) | P. Dur.(sec) | s | Number | Pre-illumination duration |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Light | Light | ?mol m-2 s-1 | Number | Flash intensity |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Gain | Gain | Number | Number | Brief measurement to determine likely size of Fo |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Dur.(sec) | Dur.(sec) | s | Number | Duration of flash |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Flash | Flash | Number | Number | Number of flashes |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Fo | Fo | Number | Number | Fluorescence origin |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Fm | Fm | Number | Number | Maximum fluorescence |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Fv | Fv | Number | Number | Variable fluorescence (Fm-Fo) |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Fv%2fFm | Fv/Fm | Number | Number | Maximum quantum efficiency |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Tfm | Tfm | Number | Number | Time at maximum Fm |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Area | Area | Number | Number | Area above fluorescence curve |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=T1+ms | T1 ms | ?s | Number | T1= 50 ?s |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=F1 | F1 | Number | Number | Fluorescence at T1 |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=T2+ms | T2 ms | ?s | Number | T2= 100 ?s |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=F2 | F2 | Number | Number | Fluorescence at T2 |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=T3+ms | T3 ms | ?s | Number | T3= 300 ?s |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=F3 | F3 | Number | Number | Fluorescence at T3 |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=T4+ms | T4 ms | ms | Number | T4= 2 ms |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=F4 | F4 | Number | Number | Fluorescence at T4 |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=T5+ms | T5 ms | ms | Number | T5= 30 ms |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=F5 | F5 | Number | Number | Fluorescence at T5 |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Protocol | Protocol | Number | Number | Protocol used (0=default) |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Dark+Offset | Dark Offset | Number | Number | Dark current measurement artefact |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=RC+%2f+ABS | RC / ABS | Number | Number | Force due to the concentration of active reaction centers |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Fv+%2f+Fo | Fv / Fo | Number | Number | Force of the light reactions |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=(1-Vj)+%2f+Vj | (1-Vj) / Vj | Number | Number | Force related to the dark reactions (after Qa-) |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=PI | PI | Number | Number | Performance index (PI) |
| http://data.g-e-m.dk/datasets?doi=10.17897/SD1R-RF39&column=Remarks | Remarks | Text | Text | Remarks from the field observer(s) |