Impact of technological creep on fishing effort and fishing mortality, for a selection of European fleets
|Author(s)||Marchal Paul1, Andersen Bo2, Caillart B.3, Eigaard Ole2, Guyader Olivier4, Hovgaard Holger2, Iriondo Ane5, Le Fur Fanny3, Sacchi Jacques6, Santurtun Marina4|
|Affiliation(s)||1 : IFREMER, Channel & N Sea Fisheries Dept, F-62321 Boulogne, France.
2 : DIFRES, Charlottenlund Castle, DK-2920 Charlottenlund, Denmark.
3 : Ocean Dev, F-29900 Concarneau, France.
4 : IFREMER, Fishery Econ Dept, F-29280 Plouzane, France.
5 : AZTI, Fisheries REsources Dept, Sukarrieta 48395, Spain.
6 : IFREMER, Mediterranean and Overseas Fisheries Department, Avenue Jean Monnet, BP 171, 34203 Sète Cedex, France
|Source||ICES Journal of Marine Science (1054-3139) (Oxford university press), 2007 , Vol. 64 , N. 1 , P. 192-209|
|WOS© Times Cited||44|
|Keyword(s)||Twin trawls, Technological creep, Groundrope, Generalized linear models, Fishing mortality, Fishing effort, Catch rate|
|Abstract||Face-to-face interviews were conducted to identify the main changes in gear and vessel technology that may have improved the fishing efficiency of a number of French, Danish, and Basque fleets over the past few decades. Important changes include the gradual appearance of twin trawls (Danish and French trawlers) and trammel-nets (French gillnetters), and the increased polyvalence of Basque bottom trawlers. The results suggest that fishing effort descriptors that are not traditionally measured (gear type, groundrope type, length of net used per day, headline length, crew size, number of winch or net drums) may have a substantial impact on catch rates. Adjusting fishing effort using such descriptors may generally improve the relationship between fishing effort and fishing mortality.|