Data Description

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Citation:
Wehkamp, S; Fischer, P (2013): Crustaceans and fish abundances and species at and around artificially introduced tetrapod fields in the southern North Sea, 2009. doi:10.1594/PANGAEA.821909,
Supplement to: Wehkamp, Stephanie; Fischer, Philipp (2013): Impact of hard-bottom substrata on the small-scale distribution of fish and decapods in shallow subtidal temperate waters. Helgoland Marine Research, 67(1), 59-72, doi:10.1007/s10152-012-0304-5
Abstract:
The micro-scale spatial distribution patterns of a demersal fish and decapod crustacean assemblage were assessed in a hard-bottom kelp environment in the southern North Sea. Using quadrats along line transects, we assessed the in situ fish and crustacean abundance in relation to substratum types (rock, cobbles and large pebbles) and the density of algae. Six fish and four crustacean species were abundant, with Ctenolabrus rupestris clearly dominating the fish community and Galathea squamifera dominating the crustacean community. Differences in the substratum types had an even stronger effect on the micro-scale distribution than the density of the dominating algae species. Kelp had a negative effect on the fish abundances, with significantly lower average densities in kelp beds compared with adjacent open areas. Averaged over all of the substrata, the most attractive substratum for the fish was large pebbles. In contrast, crustaceans did not show a specific substratum affinity. The results clearly indicate that, similar to other complex systems, significant micro-scale species-habitat associations occur in northern hard-bottom environments. However, because of the frequently harsh environmental conditions, these habitats are mainly sampled from ships with sampling gear, and the resulting data cannot be used to resolve small-scale species-habitat associations. A detailed substratum classification and community assessment, often only possible using SCUBA diving, is therefore important to reach a better understanding of the functional relationships between species and their environment in northern temperate waters, knowledge that is very important with respect to the increasing environmental pressure caused by global climate change.
Project(s):
Coastal Ecology @ AWI (AWI_Coast) *
Coverage:
Median Latitude: 54.193067 * Median Longitude: 7.878327 * South-bound Latitude: 54.192530 * West-bound Longitude: 7.877530 * North-bound Latitude: 54.193700 * East-bound Longitude: 7.879000
Date/Time Start: 2009-06-14T12:00:00 * Date/Time End: 2009-09-18T12:00:00
Event(s):
Helgoland_TMI * * Latitude: 54.192970 * Longitude: 7.878450 * Location: German Bight, North Sea * * Campaign: Helgoland * * Basis: Meeresstation Helgoland * * Device: Sampling by diver *
Helgoland_TN * * Latitude: 54.193700 * Longitude: 7.877530 * Location: German Bight, North Sea * * Campaign: Helgoland * * Basis: Meeresstation Helgoland * * Device: Sampling by diver *
Helgoland_TS * * Latitude: 54.192530 * Longitude: 7.879000 * Location: German Bight, North Sea * * Campaign: Helgoland * * Basis: Meeresstation Helgoland * * Device: Sampling by diver *
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEventMetadata
2DATE/TIME *Date/TimeGeocode
3LATITUDE *LatitudeGeocode
4LONGITUDE *LongitudeGeocode
5Sample code/label *LabelWehkamp, Stephanie *counting
6Direction *DirectiondegWehkamp, Stephanie *
7Distance *DistancemWehkamp, Stephanie *
8Temperature, water *TempCWehkamp, Stephanie *
9Visibility *VisibmWehkamp, Stephanie *
10Tide *TideWehkamp, Stephanie *
11Laminaria *Laminaria#Wehkamp, Stephanie *0=0-4, 1=5-9, 2=>10
12Comment *CommentWehkamp, Stephanie *
13Gadus morhua *G. morhua#Wehkamp, Stephanie *
14Trisopterus luscus *T. luscus#Wehkamp, Stephanie *
15Pollachius pollachius *P. pollachius#Wehkamp, Stephanie *
16Pollachius virens *P. virens#Wehkamp, Stephanie *
17Raniceps raninus *R. raninus#Wehkamp, Stephanie *
18Ciliata mustela *C. mustela#Wehkamp, Stephanie *
19Spinachia spinachia *S. spinachia#Wehkamp, Stephanie *
20Entelurus aequoreus *E. aequoreus#Wehkamp, Stephanie *
21Nerophis ophidion *N. ophidion#Wehkamp, Stephanie *
22Myoxocephalus scorpius *M. scorpius#Wehkamp, Stephanie *
23Taurulus bubalis *T. bubalis#Wehkamp, Stephanie *
24Agonus cataphractus *A. cataphractus#Wehkamp, Stephanie *
25Callionymus lyra *C. lyra#Wehkamp, Stephanie *
26Cyclopterus lumpus *C. lumpus#Wehkamp, Stephanie *
27Liparis spp. *Liparis spp.#Wehkamp, Stephanie *
28Trachurus trachurus *T. trachurus#Wehkamp, Stephanie *
29Labrus bergylta *L. bergylta#Wehkamp, Stephanie *
30Ctenolabrus rupestris *C. rupestris#Wehkamp, Stephanie *
31Zoarces viviparus *Z. viviparus#Wehkamp, Stephanie *
32Pholis gunnellus *P. gunnellus#Wehkamp, Stephanie *
33Pomatoschistus flavescens *P. flavescens#Wehkamp, Stephanie *
34Pomatoschistus minutus *P. minutus#Wehkamp, Stephanie *
35Pleuronectidae spp. *Pleuronectidae spp.#Wehkamp, Stephanie *
36Fish larvae *Fish larvae#Wehkamp, Stephanie *
37Homarus gammarus *H. gammarus#Wehkamp, Stephanie *
38Pilumnus hirtellus *P. hirtellus#Wehkamp, Stephanie *
39Pisidia longicornis *P. longicornis#Wehkamp, Stephanie *
40Hyas araneus *H. araneus#Wehkamp, Stephanie *
41Galathea squamifera *G. squamifera#Wehkamp, Stephanie *
42Pagurus bernhardus *P. bernhardus#Wehkamp, Stephanie *
43Cancer pagurus *C. pagurus#Wehkamp, Stephanie *
44Carcinus maenas *C. maenas#Wehkamp, Stephanie *
45Liocarcinus spp. *Liocarcinus spp.#Wehkamp, Stephanie *
46Necora puber *N. puber#Wehkamp, Stephanie *
License:
Size:
7465 data points

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