Spatial distribution and species composition of small pelagic fishes in the Gulf of California
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| Formato: | Online |
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Universidad de Costa Rica
2008
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/5609 |
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RBT56092022-06-06T18:22:59Z Spatial distribution and species composition of small pelagic fishes in the Gulf of California Spatial distribution and species composition of small pelagic fishes in the Gulf of California Lanz, Edgar O. Nevárez Martínez, Manuel López Martínez, Juana A. Dworak, Juan Distribución espacial Golfo de California SIG regiones pesqueras pelágicos menores Spatial distribution Gulf of California GIS fishing regions small pelagic fishes Traditional regionalization methods in fisheries based on provinces or major fishing areas, includes large and arbitrary grids in which basic statistics or inferences on distribution or abundance are made. We describe a method for regionalization and analysis of fishing activities for small pelagic fisheries in the Gulf of California, based on spatial patterns of landing and catch data in a Geographic Information System (GIS) environment. A fisheries database from logbooks with spatial attributes from October 2002 to June 2007 was analyzed. Landings and catching data were transformed to a Weighted Region Index (WRI) by using fuzzy logic operators. The WRI revealed fishing action centers characterized by areas with the highest WRI values, and a hierarchy for the relative importance of the regions was established. Guaymas, Desemboque de Caborca, Isla Patos, and Bahía San Rafael were the most prominent ones. An analysis of the relative frequency of species composition showed that the Pacific sardine had over 80% abundance in the midriff islands, and remained as the most important in the upper gulf regions, while in the central part of the gulf, relative abundances of Pacific sardine and Northern anchovy were more balanced. Relative abundance of mackerel was significantly larger around Isla Patos than in any other place. Guaymas had the largest relative composition of Northern anchovy and the lowest values for Pacific sardine. Desemboque de Caborca showed the largest homogeneity in species relative composition. It is important to highlight that this results come from in situ data, while the results previously reported come from landing statistics by port. Therefore, the present method acknowledges the spatial differences of species by regions, additional to the traditional time series analysis. Universidad de Costa Rica 2008-06-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Text application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/5609 10.15517/rbt.v56i2.5609 Revista de Biología Tropical; Vol. 56 No. 2 (2008): Volume 56 – Regular number 2 – June 2008; 575–590 Revista de Biología Tropical; Vol. 56 Núm. 2 (2008): Volumen 56 – Número regular 2 – Junio 2008; 575–590 Revista Biología Tropical; Vol. 56 N.º 2 (2008): Volume 56 – Regular number 2 – June 2008; 575–590 2215-2075 0034-7744 10.15517/rbt.v56i2 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/5609/5353 Copyright (c) 2008 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Lanz, Edgar O. Nevárez Martínez, Manuel López Martínez, Juana A. Dworak, Juan |
| spellingShingle |
Lanz, Edgar O. Nevárez Martínez, Manuel López Martínez, Juana A. Dworak, Juan Spatial distribution and species composition of small pelagic fishes in the Gulf of California |
| author_facet |
Lanz, Edgar O. Nevárez Martínez, Manuel López Martínez, Juana A. Dworak, Juan |
| author_sort |
Lanz, Edgar |
| title |
Spatial distribution and species composition of small pelagic fishes in the Gulf of California |
| title_short |
Spatial distribution and species composition of small pelagic fishes in the Gulf of California |
| title_full |
Spatial distribution and species composition of small pelagic fishes in the Gulf of California |
| title_fullStr |
Spatial distribution and species composition of small pelagic fishes in the Gulf of California |
| title_full_unstemmed |
Spatial distribution and species composition of small pelagic fishes in the Gulf of California |
| title_sort |
spatial distribution and species composition of small pelagic fishes in the gulf of california |
| title_alt |
Spatial distribution and species composition of small pelagic fishes in the Gulf of California |
| publisher |
Universidad de Costa Rica |
| publishDate |
2008 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/5609 |
| work_keys_str_mv |
AT lanzedgar spatialdistributionandspeciescompositionofsmallpelagicfishesinthegulfofcalifornia AT onevarezmartinezmanuel spatialdistributionandspeciescompositionofsmallpelagicfishesinthegulfofcalifornia AT lopezmartinezjuana spatialdistributionandspeciescompositionofsmallpelagicfishesinthegulfofcalifornia AT adworakjuan spatialdistributionandspeciescompositionofsmallpelagicfishesinthegulfofcalifornia |
| _version_ |
1810114558049648640 |