Citation:

PANGAEA.995417 (dataset in review)

Name: Surface measurements of zooplankton concentration and species diversity in the East Frisian Wadden Sea in 2015-2024
License: https://creativecommons.org/licenses/by/4.0/
Keywords: nutrients; plankton; Wadden Sea

ShareShow Map Google Earth

Abstract:

Due to stagnant or even increasing phytoplankton biomass in the Wadden Sea since 2005, the Lower Saxony Water Management, Coastal and Nature Protection Agency started a zooplankton survey in 2015, regularly monitoring the abundance, biomass, body size, and species in the East Frisian Wadden Sea. A total of 10 stations are sampled monthly. Samples are taken using an Hydrobios Apstein net, 150 µm mesh size, hauled from 10 meters deep to the surface at constant speed (0.67 m/s). The net has an opening of 40 cm in diameter, and is attached to a cone with a 17 cm wide opening. Samples are collected with three vertical hauls and stored in a 1L container mixed with borax-buffered formalin (5%). Samples are analyzed in accordance with the standard procedure DIN EN 17204:2020-09 to measure abundance, dry and wet weight, and taxonomic composition. Organisms were counted and identified up to the species (if possible) or genus level using a Bogorov-Chamber and a stereoscopic magnifier. 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 zooplankton species composition, biomass, and body size distribution from 2015 to 2025 in the East Frisian Wadden Sea.

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: 53.685286 * Median Longitude: 7.683529 * South-bound Latitude: 53.479015 * West-bound Longitude: 6.874542 * North-bound Latitude: 53.820000 * East-bound Longitude: 8.381554

Date/Time Start: 2015-07-13T07:05:00 * Date/Time End: 2024-10-19T12:00:00

Minimum DEPTH, water: 5 m * Maximum DEPTH, water: 5 m

Event(s):

Balt_W_1 * Latitude: 53.731765 * Longitude: 7.440842 * 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)

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)

Bork_W_2 * Latitude: 53.613999 * Longitude: 6.874542 * 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)

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	Depth, water, top/minimum	Depth water top	m	Rönn, Lena
9	Depth, water, bottom/maximum	Depth water bot	m	Rönn, Lena
10	Sample method	Sample method		Rönn, Lena
11	Taxon/taxa	Taxa		Rönn, Lena	Bogorov-Chamber with stereoscopic magnifier, according to DIN EN 17204:2020-09
12	Species, unique identification	Species UID		Rönn, Lena	Bogorov-Chamber with stereoscopic magnifier, according to DIN EN 17204:2020-09	original species names in the datasets
13	Species	Species		Rönn, Lena	Bogorov-Chamber with stereoscopic magnifier, according to DIN EN 17204:2020-09	WoRMS accepted species name (2026-06-10)
14	Species, unique identification (Semantic URI)	Species UID (Semantic URI)		Rönn, Lena	Bogorov-Chamber with stereoscopic magnifier, according to DIN EN 17204:2020-09	original species names in the datasets
15	Species, unique identification (URI)	Species UID (URI)		Rönn, Lena	Bogorov-Chamber with stereoscopic magnifier, according to DIN EN 17204:2020-09	original species names in the datasets
16	Stage	Stage		Rönn, Lena	Bogorov-Chamber with stereoscopic magnifier, according to DIN EN 17204:2020-09
17	Abundance per volume	Abund v	#/m³	Rönn, Lena	Bogorov-Chamber with stereoscopic magnifier, according to DIN EN 17204:2020-09
18	Biovolume per volume	Biovol v	mm³/m³	Rönn, Lena	Bogorov-Chamber with stereoscopic magnifier, according to DIN EN 17204:2020-09
19	Carbon	C	mg/m³	Rönn, Lena	Bogorov-Chamber with stereoscopic magnifier, according to DIN EN 17204:2020-09
20	Wet mass	Wet m	mg/m³	Rönn, Lena	Bogorov-Chamber with stereoscopic magnifier, according to DIN EN 17204:2020-09
21	Dry mass	Dry m	mg/m³	Rönn, Lena	Bogorov-Chamber with stereoscopic magnifier, according to DIN EN 17204:2020-09

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:

241002 data points

Download Data (login required; moratorium until 2026-11-28)

Download dataset as tab-delimited text — use the following character encoding:

View dataset as HTML (shows only first 2000 rows)