FN Archimer Export Format PT J TI Notes on survey-based spatial indicators for monitoring fish populations BT AF WOILLEZ, Mathieu RIVOIRARD, Jacques PETITGAS, Pierre AS 1:1;2:2;3:1; FF 1:PDG-DOP-DCN-EMH;2:;3:PDG-DOP-DCN-EMH; C1 IFREMER, Dept EMH, F-44311 Nantes 03, France. Ctr Geosci Geostat, F-77300 Fontainebleau, France. C2 IFREMER, FRANCE CTR GEOSCI GEOSTAT, FRANCE SI NANTES SE PDG-DOP-DCN-EMH IN WOS Ifremer jusqu'en 2018 copubli-france IF 1.227 TC 71 UR https://archimer.ifremer.fr/doc/2009/publication-6687.pdf LA English DT Article DE ;Fish populations;Spatial patterns;Monitoring;Spatial indicators AB This paper presents the spatial indicators used in the European project FISBOAT. These are statistics intended to capture spatial patterns of fish populations, using fish density data collected during scientific surveys. To handle diffuse population limits, indicators are designed not to depend on arbitrary delineation of the domain. They characterize the location (centre of gravity and spatial patches), occupation of space (inertia, isotropy, positive area, spreading area and equivalent area) and microstructure. Collocation between different populations is summarized by a global index of collocation. These spatial indicators have the potential to be used in a monitoring system to detect changes in spatial distribution. They could be helpful for relating the spatial distribution properties of fish stocks to their dynamics, their habitats, or to climate change. PY 2009 PD APR SO Aquatic Living Resources SN 0990-7440 PU EDP Sciences VL 22 IS 2 UT 000267128000005 BP 155 EP 164 DI 10.1051/alr/2009017 ID 6687 ER EF