Biodiversity associated to sargassum forest at the Gulf of California

Alvin Noé Suarez-Castillo, Rafael Riosmena-Rodriguez, Gustavo Hernandez-Carmona, María Del Carmen Méndez-Trejo, Juan Manuel López-Vivas, Carlos Sánchez-Ortiz, María Mónica Lara-Uc, Jorge Torre-Cosio

Research output: Chapter in Book/Report/Conference proceedingChapterResearch

Abstract

The Sargassum forests are one of the most characteristic and critical habitats for conservation in the rocky shores at the Gulf of California. Therefore, it is necessary to know more about the associated populations. The study was carried out in 2008 in five localities around La Paz Bay, México. The biodiversity associated with sub-tidal Sargassum forest was monitored by applying a modification of the NaGISA rocky shore protocol. The richness of fish species was estimated for long of transects of 50 m. The cover percent of the biotic and abiotic component of substrate, the composition of epibenthic invertebrates and the richness of macroalgae species were estimated inside of 1 m2 quadrants, and the density (thalli number) and size of Sargassum were estimated inside 625 cm2 quadrants. The substrate was composed principally of rock, Sargassum and other seaweeds. In total, 27 species of fishes, 23 species of macroalgae, 38 species of macro epibenthic and 17 micro epibenthic invertebrates were registered. Differences in species composition of macroalgae associated with Sargassum forests were observed between the locality El Saladito and The Sauzoso. During the study, the size of Sargassum showed temporal variation suggesting growth differences. The total number of epibenthic invertebrates found was 633 (mean = 3.7 individuals/m2), which were classified into six taxa; the Cnidaria was the most abundant. The cover percent of substrate components, the community structure of fauna and morphometric variables of the algae showed a spatial-temporal variation. The results show the baseline that can be obtained, which in turn will provide the information necessary to understand the ecological role of these brown algae for the maintenance of biodiversity and the community-associated changes. Sargassum forest is a critical habitat for conservation in the Gulf of California because it is sensitive to environmental and human-induced impacts. Their role in coastal areas is related to species recruitment, the fixation of CO2 and drift material, which are extremely important to sandy beach stability and food sources for insects from terrestrial environments. Sargassum forest comprise a relevant near shore ecosystem where species related to fisheries, protected species and those with high biodiversity treat it as a refuge There are several fisheries related who are close to this ecosystem and legal protection does not exist to protect this critical habitat for conservation in the Gulf of California. © 2013 by Nova Science Publishers, Inc. All rights reserved.
Original languageAmerican English
Title of host publicationInvertebrates: Classification, Evolution and Biodiversity
Number of pages182
ISBN (Electronic)9781626187894
StatePublished - 1 Dec 2013
Externally publishedYes

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biodiversity
invertebrate
rocky shore
substrate
temporal variation
habitat
fishery
gulf
ecosystem
brown alga
terrestrial environment
fish
seaweed
refuge
fixation
community structure
beach
transect
alga
insect

Cite this

Suarez-Castillo, A. N., Riosmena-Rodriguez, R., Hernandez-Carmona, G., Méndez-Trejo, M. D. C., López-Vivas, J. M., Sánchez-Ortiz, C., ... Torre-Cosio, J. (2013). Biodiversity associated to sargassum forest at the Gulf of California. In Invertebrates: Classification, Evolution and Biodiversity
Suarez-Castillo, Alvin Noé ; Riosmena-Rodriguez, Rafael ; Hernandez-Carmona, Gustavo ; Méndez-Trejo, María Del Carmen ; López-Vivas, Juan Manuel ; Sánchez-Ortiz, Carlos ; Lara-Uc, María Mónica ; Torre-Cosio, Jorge. / Biodiversity associated to sargassum forest at the Gulf of California. Invertebrates: Classification, Evolution and Biodiversity. 2013.
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Suarez-Castillo, AN, Riosmena-Rodriguez, R, Hernandez-Carmona, G, Méndez-Trejo, MDC, López-Vivas, JM, Sánchez-Ortiz, C, Lara-Uc, MM & Torre-Cosio, J 2013, Biodiversity associated to sargassum forest at the Gulf of California. in Invertebrates: Classification, Evolution and Biodiversity.

Biodiversity associated to sargassum forest at the Gulf of California. / Suarez-Castillo, Alvin Noé; Riosmena-Rodriguez, Rafael; Hernandez-Carmona, Gustavo; Méndez-Trejo, María Del Carmen; López-Vivas, Juan Manuel; Sánchez-Ortiz, Carlos; Lara-Uc, María Mónica; Torre-Cosio, Jorge.

Invertebrates: Classification, Evolution and Biodiversity. 2013.

Research output: Chapter in Book/Report/Conference proceedingChapterResearch

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AU - López-Vivas, Juan Manuel

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AU - Torre-Cosio, Jorge

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N2 - The Sargassum forests are one of the most characteristic and critical habitats for conservation in the rocky shores at the Gulf of California. Therefore, it is necessary to know more about the associated populations. The study was carried out in 2008 in five localities around La Paz Bay, México. The biodiversity associated with sub-tidal Sargassum forest was monitored by applying a modification of the NaGISA rocky shore protocol. The richness of fish species was estimated for long of transects of 50 m. The cover percent of the biotic and abiotic component of substrate, the composition of epibenthic invertebrates and the richness of macroalgae species were estimated inside of 1 m2 quadrants, and the density (thalli number) and size of Sargassum were estimated inside 625 cm2 quadrants. The substrate was composed principally of rock, Sargassum and other seaweeds. In total, 27 species of fishes, 23 species of macroalgae, 38 species of macro epibenthic and 17 micro epibenthic invertebrates were registered. Differences in species composition of macroalgae associated with Sargassum forests were observed between the locality El Saladito and The Sauzoso. During the study, the size of Sargassum showed temporal variation suggesting growth differences. The total number of epibenthic invertebrates found was 633 (mean = 3.7 individuals/m2), which were classified into six taxa; the Cnidaria was the most abundant. The cover percent of substrate components, the community structure of fauna and morphometric variables of the algae showed a spatial-temporal variation. The results show the baseline that can be obtained, which in turn will provide the information necessary to understand the ecological role of these brown algae for the maintenance of biodiversity and the community-associated changes. Sargassum forest is a critical habitat for conservation in the Gulf of California because it is sensitive to environmental and human-induced impacts. Their role in coastal areas is related to species recruitment, the fixation of CO2 and drift material, which are extremely important to sandy beach stability and food sources for insects from terrestrial environments. Sargassum forest comprise a relevant near shore ecosystem where species related to fisheries, protected species and those with high biodiversity treat it as a refuge There are several fisheries related who are close to this ecosystem and legal protection does not exist to protect this critical habitat for conservation in the Gulf of California. © 2013 by Nova Science Publishers, Inc. All rights reserved.

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Suarez-Castillo AN, Riosmena-Rodriguez R, Hernandez-Carmona G, Méndez-Trejo MDC, López-Vivas JM, Sánchez-Ortiz C et al. Biodiversity associated to sargassum forest at the Gulf of California. In Invertebrates: Classification, Evolution and Biodiversity. 2013