Data from: Bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors

Hiddink JG, Moranta J, Balestrini S, Sciberras M, Cendrier M, Bowyer R, Kaiser MJ, Sköld M, Jonsson P, Bastardie F, Hinz H

Date Published: May 31, 2016

DOI: http://dx.doi.org/10.5061/dryad.04dv4

 

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Title Abundance and biomass from grab samples
Downloaded 5 times
Description Abundance and biomass of benthic invertebrates from the Smith-McIntyre grab samples per species and per station. Benthic invertebrates were sampled by taking five 0.1 m2 Smith-McIntyre grabs at haphazard locations within the station box. For each grab, a 50ml sediment sample was retained for grain size analysis and the rest of the sample was sorted over a 1 mm sieve and preserved in 4% formalin for identification. All invertebrates were identified to the highest practicable taxonomic resolution (mostly genus or family) and the wet weight of each individual organism was estimated after blotting.
Download Infauna Kattegat Biomass all stations!!.csv (214.8 Kb)
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Title Station positions and sediment composition
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Description Latitude and longitude of the station and their sediment composition from particle size analysis. Fishing effort is given in the paper. Particle size distributions were determined using a Malvern laser diffraction particle sizer (Blott & Pye 2001).
Download Kattegat treatments.csv (1.235 Kb)
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Title Fish stomach content data
Description Stomach content data for plaice and dab have been submitted to the fish stomach database DAPSTOM that is maintained by CEFAS, UK. This contains the species, length, and weight of each fish, and the identity, number and weight of each prey item. The digestion state of each prey item is also given.
Download //www.cefas.co.uk/cefas-data-hub/fish-stom...ords/ (0 bytes)
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Title Otter trawl catches
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Description The catch composition of all species per trawl for the otter trawl catches. Two tows of 30 min were carried out at each station with an otter trawl (distance across mouth of the net 25 m, 80 mm diamond mesh cod-end) at a speed of 3 knots between 07.45h and 17.00h. The total catch number and weight per species was measured.
Download Kattegat otter trawl catches.xls (62.46 Kb)
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Title Fish species Length-weight data
Downloaded 13 times
Description The length and weight for individual fish that was used to estimate the condition of the fish. The length (to the nearest mm) and weight (to the nearest g) of the individual fish in the catch was recorded. If the catch of a species in a haul was large (>50 individuals), a subsample of ≥50 fish was measured and weighed. The BMI (body mass index) column is given here for quality assurance purposes only and not used in the analyses. Some values outside the possible range and have been marked as such.
Download Kattegat Length weight data.xls (562.6 Kb)
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Title Nephrops norvegicus length and weight data
Downloaded 7 times
Description Nephrops norvegicus length and weight data that was used to estimate their condition. The carapace length and the total weight was measured, and their sex recorded.
Download Kattegat_Nephrops.xls (92.16 Kb)
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When using this data, please cite the original publication:

Hiddink JG, Moranta J, Balestrini S, Sciberras M, Cendrier M, Bowyer R, Kaiser MJ, Sköld M, Jonsson P, Bastardie F, Hinz H (2016) Bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors. Journal of Applied Ecology 53(5): 1500-1510. http://dx.doi.org/10.1111/1365-2664.12697

Additionally, please cite the Dryad data package:

Hiddink JG, Moranta J, Balestrini S, Sciberras M, Cendrier M, Bowyer R, Kaiser MJ, Sköld M, Jonsson P, Bastardie F, Hinz H (2016) Data from: Bottom trawling affects fish condition through changes in the ratio of prey availability to density of competitors. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.04dv4
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