Get up early: Revealing behavioral responses of sandeel to ocean warming using commercial catch data

The impact of global positioning systems (GPS) and plotter systems on the relative fishing power of the northern prawn fishery fleet on tiger prawns (Penaeus esculentus Haswell, 1879, and P. semisulcatus de Haan, 1850) was investigated from commercial catch data. A generalized linear model was used to account for differences in fishing power between boats and changes in prawn abundance. It was found that boats that used a GPS alone had 4% greater fishing power than boats without a GPS. The addition of a plotter raised the power by 7% over boats without the equipment. For each year between the first to third that a fisher has been working with plotters, there is an additional 2 or 3% increase. It appears that when all boats have a GPS and plotter for at least 3 years, the fishing power of the fleet will increase by 12%. Management controls have reduced the efficiency of each boat and lowered the number of days available to fish, but this may not have been sufficient to counteract the increases. Further limits will be needed to maintain the desired levels of mortality.

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Growth, sexual maturation and spawning in central North Sea plaice (Pleuronectes platessa L.), and the generation of maturity ogives from commercial catch data

Journal of Sea Research ◽

10.1016/s1385-1101(00)00043-5 ◽

2000 ◽

Vol 44 (1-2) ◽

pp. 27-43 ◽

Cited By ~ 34

Author(s):

P.J Bromley

Keyword(s):

North Sea ◽

Sexual Maturation ◽

Commercial Catch ◽

Pleuronectes Platessa ◽

Catch Data ◽

Central North Sea

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The Irish Sea data-enhancement project: comparison of self-sampling and national data-collection programmes—results and experiences

ICES Journal of Marine Science ◽

10.1093/icesjms/fsr100 ◽

2011 ◽

Vol 68 (8) ◽

pp. 1778-1784 ◽

Cited By ~ 12

Author(s):

Deirdre Hoare ◽

Norman Graham ◽

Pieter-Jan Schön

Keyword(s):

Data Collection ◽

Data Quality ◽

Irish Sea ◽

Marine Science ◽

National Data ◽

Commercial Catch ◽

Catch Data ◽

National Programmes ◽

The Irish Sea ◽

The Uk

Abstract Hoare, D., Graham, N., and Schön, P-J. 2011. The Irish Sea data-enhancement project: comparison of self-sampling and national data-collection programmes—results and experiences. – ICES Journal of Marine Science, 68: 1778–1784. The Irish Sea Data Enhancement Pilot (ISDEP) was initiated by the UK and Irish fishing sectors, with the objective of improving the precision of commercial catch data (landings and discards) from vessels engaged in demersal trawling in the Irish Sea (ICES Division VIIa). The programme was supported by the Irish and UK Governments and managed by national laboratories. The experience of establishing and managing such a programme, including logistical, data-quality, and participation issues, is discussed. By contrasting with parallel national programmes, it is shown that the new data are robust and have improved precision. Experience has also shown that it is preferable to involve a few vessels in providing frequent samples, but that positive incentives are needed to maintain the participation.

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Determination of gill-net selectivity for bass (Dicentrarchus labrax L.) using commercial catch data

Fisheries Research ◽

10.1016/0165-7836(92)90025-o ◽

1992 ◽

Vol 13 (2) ◽

pp. 173-187 ◽

Cited By ~ 24

Author(s):

E.G. Reis ◽

M.G. Pawson

Keyword(s):

Dicentrarchus Labrax ◽

Commercial Catch ◽

Catch Data ◽

Gill Net

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