FN Archimer Export Format
PT C
TI A new statistic for sampling design investigation : an application to length-structured landings sampling
BT 
AF VIGNEAU, Joel
   MAHEVAS, Stephanie
AS 1:;2:;
FF 1:PDG-DOP-DCMMN-HMMN-RHPEB;2:PDG-DOP-DCN-EMH;
SI PORT-EN-BESSIN
   NANTES
SE PDG-DOP-DCMMN-HMMN-RHPEB
   PDG-DOP-DCN-EMH
UR https://archimer.ifremer.fr/doc/2005/acte-2698.pdf
LA English
DT Proceedings paper
DE ;stratification;sampling design;length structure;market sampling
AB Measuring fish on a market or on board a vessel is the most common action taken by biologists all around the world to gather data for stock assessment. The samples coming from this kind of survey are of vector type and are not straightforward to analyse and compare. This paper proposes a generic tool that enables to investigate in any multinomial like sampling scheme. The use of this tool will be discussed based on examples from two different sampling designs. One is a sampling of commercial market categories and the other is a métier based sampling. The research of outliers, misallocated samples or potential bias, the stratification and the analysis of within and between strata variance will be discussed with the objective of constructing the best sampling design and insure the quality of the input data for stock assessment models. This statistic is easy to implement and should be considered as a mandatory step to validate the sampling data at an international level. 
PY 2005
PD SEP
CT ICES CM 2005/Z :07
ID 2698
ER

EF