Crustaceans and fish abundances and species at and around artificially introduced tetrapod fields in the southern North Sea, 2009 ...

• Main Authors: Wehkamp, Stephanie, Fischer, Philipp
• Format: Dataset
• Language: English
• Published: PANGAEA 2013
• Subjects: Event label; DATE/TIME; Latitude of event; Longitude of event; Sample code/label; Direction; Distance; Temperature, water; Visibility; Tide; Laminaria; Comment; Gadus morhua; Trisopterus luscus; Pollachius pollachius; Pollachius virens; Raniceps raninus; Ciliata mustela; Spinachia spinachia; Entelurus aequoreus; Nerophis ophidion; Myoxocephalus scorpius; Taurulus bubalis; Agonus cataphractus; Callionymus lyra; Cyclopterus lumpus; Liparis spp.; Trachurus trachurus; Labrus bergylta; Ctenolabrus rupestris; Zoarces viviparus; Pholis gunnellus; Pomatoschistus flavescens; Pomatoschistus minutus; Pleuronectidae; Fish larvae; Homarus gammarus; Pilumnus hirtellus; Pisidia longicornis; Hyas araneus; Galathea squamifera; Pagurus bernhardus; Cancer pagurus; Carcinus maenas; Liocarcinus spp.; Necora puber; Sampling by diver; Helgoland; Meeresstation Helgoland; Coastal Ecology @ AWI AWI_Coast
• Online Access: https://dx.doi.org/10.1594/pangaea.821909; https://doi.pangaea.de/10.1594/PANGAEA.821909

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 ... : 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 ...