Crustaceans and fish abundances and species at and around artificially introduced tetrapod fields in the southern North Sea, 2010-2011 ...

In the coming decades, artificial defence structures will increase in importance worldwide for the protection of coasts against the impacts of global warming. However, the ecological effects of such structures on the natural surroundings remain unclear. We investigated the impact of experimentally i...

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Bibliographic Details
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
Pollachius pollachius, juvenile
Sampling by diver
Helgoland
Meeresstation Helgoland
Online Access:https://dx.doi.org/10.1594/pangaea.821915
https://doi.pangaea.de/10.1594/PANGAEA.821915
Description
Summary:In the coming decades, artificial defence structures will increase in importance worldwide for the protection of coasts against the impacts of global warming. However, the ecological effects of such structures on the natural surroundings remain unclear. We investigated the impact of experimentally introduced tetrapod fields on the demersal fish community in a hard-bottom area in the southern North Sea. The results indicated a significant decrease in fish abundance in the surrounding area caused by migration effects towards the artificial structures. Diversity (HB) and evenness (E) values exhibited greater variation after the introduction of the tetrapods. Additionally, a distinct increase in young-of-the-year (YOY) fish was observed near the structures within the second year after introduction. We suggest that the availability of adequate refuges in combination with additional food resources provided by the artificial structures has a highly species-specific attraction effect. However, these findings also ... : Supplement to: Wehkamp, Stephanie; Fischer, Philipp (2013): Impact of coastal defence structures (tetrapods) on a demersal hard-bottom fish community in the southern North Sea. Marine Environmental Research, 83, 82-92 ...

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