Citation:

PANGAEA.995414 (dataset in review)

Name: Surface measurements of phytoplankton concentration and species diversity in the East Frisian Wadden Sea in 2020-2024
License: https://creativecommons.org/licenses/by/4.0/
Keywords: nutrients; plankton; Wadden Sea

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Abstract:

Nutrients concentrations are declining since 1995 in the Wadden Sea, while phytoplankton biomass is increasing since 2005. A survey started in 2006 by the Lower Saxony Water Management, Coastal and Nature Protection Agency regularly monitors the abundance, biomass, and cell size of phytoplankton species in the East Frisian Wadden Sea. A total of 14 stations are sampled from a monthly to weekly frequency. Samples are taken at the surface using a bucket, and kept in 5L canisters with Lugol's iodine solution to be stored in the cold and dark until microscopic analysis. An inverted microscope was used to identify and analyze phytoplankton samples following Utermöhl (1958). The unaccepted or original names of species are given in the 'Species UID' variable, and the accepted identifications are given in the 'Species'. The data provides a detailed time series of phytoplankton species composition, biomass, and cell size diversity from 2020 to 2025 in the East Frisian Wadden Sea surface waters.

Keyword(s):

nutrients; plankton; Wadden Sea

Supplement to:

Rönn, Lena; Wirtz, Kai W; Imbert, Thomas (in review): High relevance of top-down control in coastal planktonic food webs. Frontiers in Marine Science. In review. Frontiers in Marine Science

Coverage:

Median Latitude: 53.634971 * Median Longitude: 7.791223 * South-bound Latitude: 53.479015 * West-bound Longitude: 6.917592 * North-bound Latitude: 53.820000 * East-bound Longitude: 8.381554

Date/Time Start: 2020-01-08T07:10:00 * Date/Time End: 2024-12-30T08:37:00

Minimum DEPTH, water: 1 m * Maximum DEPTH, water: 1 m

Event(s):

Bork_W_1 * Latitude: 53.479015 * Longitude: 6.917592 * Date/Time Start: 2012-07-30T00:00:00 * Date/Time End: 2024-12-31T00:00:00 * Location: East Frisian Wadden Sea, Germany * Method/Device: Monitoring station (MONS)

JaBu_W_1 * Latitude: 53.512833 * Longitude: 8.149917 * Date/Time Start: 2019-01-07T00:00:00 * Date/Time End: 2022-12-19T00:00:00 * Location: East Frisian Wadden Sea, Germany * Method/Device: Monitoring station (MONS)

Nney_W_2 * Latitude: 53.697046 * Longitude: 7.165052 * Date/Time Start: 1998-06-22T00:00:00 * Date/Time End: 2024-12-31T00:00:00 * Location: East Frisian Wadden Sea, Germany * Method/Device: Monitoring station (MONS)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Rönn, Lena
2	Sample code/label	Sample label		Rönn, Lena
3	Latitude of event	Latitude		Rönn, Lena
4	Longitude of event	Longitude		Rönn, Lena
5	Location of event	Location		Rönn, Lena
6	DATE/TIME	Date/Time		Rönn, Lena		Geocode
7	DEPTH, water	Depth water	m	Rönn, Lena		Geocode
8	Sample method	Sample method		Rönn, Lena
9	Taxon/taxa	Taxa		Rönn, Lena	Inverted light microscopy (Utermöhl 1958)
10	Species, unique identification	Species UID		Rönn, Lena	Inverted light microscopy (Utermöhl 1958)	original species names in the datasets
11	Species	Species		Rönn, Lena	Inverted light microscopy (Utermöhl 1958)	WoRMS accepted species name (2026-06-10)
12	Species, unique identification (Semantic URI)	Species UID (Semantic URI)		Rönn, Lena	Inverted light microscopy (Utermöhl 1958)	original species names in the datasets
13	Species, unique identification (URI)	Species UID (URI)		Rönn, Lena	Inverted light microscopy (Utermöhl 1958)	original species names in the datasets
14	Abundance	Abund	#/l	Rönn, Lena	Inverted light microscopy (Utermöhl 1958)
15	Biovolume	Biovol	µm³/l	Rönn, Lena	Inverted light microscopy (Utermöhl 1958)
16	Biomass as carbon per volume	Biom C	µg/l	Rönn, Lena	Inverted light microscopy (Utermöhl 1958)

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:

141271 data points

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