Citation:

PANGAEA.980875 (dataset in review)

Name: Sediments of the Wadden Sea 2019-2021
Creator: Heino O Fock
License: https://creativecommons.org/licenses/by/4.0/
Keywords: endofauna; EUNIS habitat types; North Sea; softbottom

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Abstract:

The CRANIMPACT project investigated the effects of beam trawl shrimp fisheries on 2 habitat types in the sublittoral of the Wadden Sea National Parks of the northern German states. Two complementary approaches were used to investigate the short-term effects following an experimental fishing event and the chronic changes caused by sustained fishing pressure of varying intensity. In the experimental approach, the short-term, small-scale effects on endo- and epifauna after experimental fishing and their effect duration were investigated on a total of 4 study sites (A, B, B2 in the tidal flat system of the Sylt backshore tidal flat; C in the tidal flat system near Norderney). The experiments were conducted as before-after-control-impact studies (BACI) exclusively in habitat type fine and medium sands with ripple structure (a sufficiently large lanice field could not be sampled). The large-scale effects of fishing were determined along gradients of fishing intensity in the Wadden Sea of Lower Saxony, Schleswig-Holstein and Denmark. For this purpose, among other things, methods were developed to represent small-scale differences in fishing effort using satellite data in tidal flat systems. Gradient analysis (GA) was carried out on fine and medium sands with ripple structure as well as on fields with colonization of the tree tube worm Lanice conchilega for the endofauna alone. All surveys were conducted in the sublittoral. A total of 427 endofauna samples were examined from 2019, 2020, and 2021.

Keyword(s):

endofauna; EUNIS habitat types; North Sea; softbottom

Related to:

Fock, Heino O (2025): Endofauna traits 49 species Wadden Sea [dataset]. Zenodo, https://doi.org/10.5281/zenodo.14801828

Fock, Heino O; Dammann, Robin; Mielck, Finn; Kraus, Gerd; Lauerburg, Rebecca A M; López González, Alfonso; Nielsen, Pernille; Nowicki, Margarethe; Pauli, Matthias; Temming, Axel (2023): Auswirkungen der Garnelenfischerei auf Habitate und Lebensgemeinschaften im Küstenmeer der Norddeutschen Bundesländer Schleswig- Holstein, Hamburg und Niedersachsen (CRANIMPACT). Thünen-Institut, Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei, Thünen Report 107, https://doi.org/10.3220/REP1681989003000

Fock, Heino O: Macroinvertebrate endofauna of the Wadden Sea 2019-2021 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.981081

Funding:

European Commission (EC), grant/award no. SH-157-I.16 : CRANIMPACT

Coverage:

Median Latitude: 54.817452 * Median Longitude: 8.265540 * South-bound Latitude: 53.667233 * West-bound Longitude: 6.586833 * North-bound Latitude: 55.096583 * East-bound Longitude: 8.639700

Date/Time Start: 2019-07-15T00:00:00 * Date/Time End: 2021-10-25T09:55:12

Event(s):

CLUPEA20200902-track * Latitude Start: 53.718700 * Longitude Start: 6.586833 * Latitude End: 53.718800 * Longitude End: 6.690817 * Date/Time Start: 2020-09-02T08:58:05 * Date/Time End: 2020-09-02T11:15:40 * Location: North Sea * Campaign: * Basis:

CLUPEA20200903-track * Latitude Start: 53.668467 * Longitude Start: 6.693250 * Latitude End: 53.719833 * Longitude End: 6.786083 * Date/Time Start: 2020-09-03T07:29:25 * Date/Time End: 2020-09-03T09:19:30 * Location: North Sea * Campaign: * Basis:

CLUPEA20200907-track * Latitude Start: 53.692267 * Longitude Start: 7.153117 * Latitude End: 53.692100 * Longitude End: 7.153867 * Date/Time Start: 2020-09-07T09:23:00 * Date/Time End: 2020-09-07T10:08:45 * Location: North Sea * Campaign: * Basis:

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Fock, Heino O
2	Station label	Station		Fock, Heino O		distinctive station identifier for stations of: (1) BACI-experiments composed of 'station no.'_'days before/after impact'_'area'_'treatment'_'year' and (2) gradient analysis composed of 'station no. (followed by no. of haul, if applicable)'_'GR (for gradient analysis)'_'area'_'fisheries intensity ('0' for unfished reference area, 'U' for unknown, i.e. to be derived fom VMS-data)'_'year'
3	DATE/TIME	Date/Time		Fock, Heino O		Geocode – UTC
4	Local Time	Local time		Fock, Heino O		Central European Summer Time (CEST)
5	LATITUDE	Latitude		Fock, Heino O		Geocode
6	LONGITUDE	Longitude		Fock, Heino O		Geocode
7	Location	Location		Fock, Heino O		locality or geographical region
8	Vessel	Vessel		Fock, Heino O		FV: fishing vessel; RV: research vessel; FRV: fisheries research vessel; MPV: multi-purpose vessel
9	Leg Number	Leg		Fock, Heino O		waypoint positions for towed gear (e.g. beam trawls) are serially numbered e.g. 001
10	Device type	Device		Fock, Heino O
11	Length	l	m	Fock, Heino O		beam length [m] of beam trawls deployed
12	Sample comment	Sample comment		Fock, Heino O		purpose of deployment, as sampling of 'endofauna', 'epifauna', and 'sediment', or experimental fishing 'impact'
13	Action	action		Fock, Heino O		'on ground' as moment in which device touches sea bed, 'fishing' as towing the gear over ground, and 'hoisting' as start of spooling up the warp
14	Position	Position		Fock, Heino O		position obtained either by (D)GPS-antenna of 'vessel', underwater position of 'device' (using underwater positioning system Kongsberg µPAP), or position of 'block' deflecting the warp (using a DGPS-antenna mounted close to the block and using MagicMapper MF)
15	Comment	Comment		Fock, Heino O		additional information as free text; abbreviation 'TZ' stands for navigationals software 'TimeZero'
16	Sample type	Samp type		Fock, Heino O		description of sample type
17	Texture	Texture		Fock, Heino O		description of textural group
18	Grain size, mean	Grain size mean	µm	Fock, Heino O	Analysed according to Folk and Ward (1957)
19	Grain size description	Grain size descr		Fock, Heino O	Analysed according to Folk and Ward (1957)
20	Mode, grain size	Mode	µm	Fock, Heino O		mode 1; most often measured grain size of all particles
21	Sorting	Sort	µm	Fock, Heino O	Analysed according to Folk and Ward (1957)	sorting (σG); graphical method
22	Skewness	Skew		Fock, Heino O	Analysed according to Folk and Ward (1957)	skewness (SkG); graphical method [µm]
23	Kurtosis	Kurt		Fock, Heino O	Analysed according to Folk and Ward (1957)	kurtosis (KG); graphical method [µm]
24	Median, grain size	D50	µm	Fock, Heino O		percentile D50 or median grain size; grain size below which 50 % of all particles were found
25	Sample, dry mass	Samp dm	g	Fock, Heino O		total dry mass of sample
26	Subsample, dry mass	Subsamp dry m	g	Fock, Heino O		dry mass of sizefraction < 2 mm
27	Subsample, dry mass	Subsamp dry m	g	Fock, Heino O		dry mass of size fraction > 2 mm
28	Gravel	Gravel	%	Fock, Heino O		proportion of gravel of size fraction: 64 mm – 2 mm
29	Sand	Sand	%	Fock, Heino O		proportion of sand of size fraction 2000 µm – 63 µm
30	Size fraction < 0.063 mm, mud, silt+clay	<63 µm	%	Fock, Heino O
31	Size fraction 64-32 mm, very coarse gravel, pebble	64-32 mm	%	Fock, Heino O
32	Size fraction 32-16 mm, coarse gravel, pebble	32-16 mm	%	Fock, Heino O
33	Size fraction 16-8 mm, medium gravel	16-8 mm	%	Fock, Heino O
34	Size fraction 8.0-4.0 mm, fine gravel	8-4 mm	%	Fock, Heino O
35	Size fraction 4.0-2.0 mm, very fine gravel, granule	4-2 mm	%	Fock, Heino O
36	Size fraction 2.000-1.000 mm, (-1.0)-0.0 phi, very coarse sand	2-1 mm	%	Fock, Heino O
37	Size fraction 1.000-0.500 mm, 0.0-1.0 phi, coarse sand	1-0.5 mm	%	Fock, Heino O
38	Size fraction 0.500-0.250 mm, 1.0-2.0 phi, medium sand	500-250 µm	%	Fock, Heino O
39	Size fraction 0.250-0.125 mm, 2.0-3.0 phi, fine sand	250-125 µm	%	Fock, Heino O
40	Size fraction 0.125-0.063 mm, 3.0-4.0 phi, very fine sand	125-63 µm	%	Fock, Heino O
41	Size fraction 0.063-0.031 mm, very coarse silt	63-31 µm	%	Fock, Heino O
42	Size fraction 0.031-0.016 mm, coarse silt	31-16 µm	%	Fock, Heino O
43	Size fraction 0.016-0.008 mm, 6.0-7.0 phi, medium silt	16-8 µm	%	Fock, Heino O
44	Size fraction 0.008-0.004 mm, 7.0-8.0 phi, fine silt	8-4 µm	%	Fock, Heino O
45	Size fraction 0.004-0.002 mm, 8.0-9.0 phi, very fine silt	4-2 µm	%	Fock, Heino O
46	Size fraction < 0.002 mm, clay	<2 µm	%	Fock, Heino O

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:

228246 data points

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