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Table 1. Comparison of <strong>the</strong> data/parameters currently collected by IEO and INRH.<br />
Data INRH Periodicity IEO Periodicity Observations<br />
Landings X January-<br />
December<br />
(monthly)<br />
X Quarterly INRH data in Tangier.<br />
IEO data in Tarifa and Algeciras<br />
(although data are collected<br />
quarterly by boat and fishing day)<br />
Fishing effort X January-<br />
December<br />
(monthly)<br />
X Quarterly INRH data in Tangier.<br />
IEO data in Tarifa and Algeciras<br />
(although data are collected<br />
quarterly by boat and fishing day)<br />
Length-frequency<br />
distributions<br />
X Quarterly X Monthly Length-frequency distribution<br />
sampling in <strong>the</strong> port of Tangier.<br />
Length-frequency distribution<br />
sampling by commercial category<br />
(4) in <strong>the</strong> port of Tarifa<br />
Fishing grounds – – X Monthly Information from <strong>the</strong> "green<br />
boxes" (from 2008 onwards) and<br />
on-board observers programme<br />
(2005-2009)<br />
Biological<br />
parameters:<br />
1. Size<br />
2. Weight<br />
3. Sex<br />
4. EMS<br />
5. Age<br />
6. Food<br />
– – X Monthly Monthly biological sampling (± 60<br />
samples) from 2003 <strong>to</strong> 2009<br />
Table 2. Data/minimum-priority parameters collected by IEO and INRH.<br />
Data INRH Periodicity IEO Periodicity Observations<br />
Landings X January-<br />
December<br />
(monthly)<br />
X Quarterly INRH data in Tangier and artisanal<br />
fleet.<br />
IEO data in Tarifa and Algeciras<br />
Fishing effort X January-<br />
December<br />
(monthly)<br />
Length-frequency<br />
distributions<br />
X Quarterly INRH data in Tangier and artisanal<br />
fleet.<br />
IEO data in Tarifa and Algeciras<br />
X Monthly X Monthly INRH data in Tangier and artisanal<br />
fleet.<br />
Size sampling of all commercial<br />
categories at <strong>the</strong> port of Tangier. To<br />
estimate <strong>the</strong> catches of small<br />
specimens (non-commercial), <strong>the</strong><br />
commercial sampling should be<br />
supplemented with size samples from<br />
<strong>the</strong> artisanal fisheries.<br />
Size sampling by commercial<br />
category (4) in <strong>the</strong> port of Tarifa. To<br />
estimate <strong>the</strong> catches of small<br />
specimens (non-commercial), <strong>the</strong><br />
commercial sampling should be<br />
complemented by concurrent<br />
sampling (and/or by-catch sampling)<br />
on board <strong>the</strong> commercial fishing<br />
vessels<br />
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