The rocky reefs found in the Gulf of California and the Mexican Pacific are home to a large diversity of invertebrate and fish species. These ecosystems are critical habitats for commercially important species that sustain the livelihoods of thousands of families. Rocky reefs are also important for the tourism industry since they are attractive sites for diving and and snorkeling.

Scientists are generating data to support resource management and improve public policy designed to protect rocky reefs to ensure a sustainable future for these ecosystems.

Climate change has catalyzed a series of environmental changes in the ocean which include changes in species’ distribution and abundance, increases in water temperature, frequency of storms, among others.

Data generated by Gulf of California Marine Program collaborators is improving our understanding of how rocky reefs function as we search for solutions to the environmental challenges we are facing.

TIMELINE

1998

The first Rocky Reef Monitoring campaign was launched under the leadership of Scripps Institution of Oceanography and with the collaboration of the UABCS.

2002

An evaluation of rocky reefs in the Gulf of California is carried out and a proposal to create a network of 13 marine reserves is published.

2006

Researchers travel to the Revillagigedo Islands on board the Nautilus Explorer to monitor the reefs and establish an ecological baseline for the archipelago.

2009

Cientists estimate that fish biomas in Cabo Pulmo National Park increased 463% in 10 years.

2010

The CBMC, Scripps Institution of Oceanography, UC Riverside and UABCS travelled to Islas Marías on board the Rocío del Mar from November 13-23.

2011

A list of 70 conspicuous reef fish species observed at 15 sites in Bahía de los Ángeles from 2008 to 2010 is presented.

2014

The GCMP published the monitoring protocol used by scientists to study rocky reefs.

2014

The GCMP launched dataMares to promote open access data, generated through the monitoring program.

2016

Under the leadership of the CBMC, scientists travelled to Revillagigedo to monitor reefs from March 30 to April 8.

2017

After visiting the Revillagigedo islands on the Sea Hunter, a multinational team of scientists published a report that supported a change in category for this MPA to National Park.

2018

CBMC and Scripps Institution of Oceanography scientists visit Islas Marías once again to monitor the reefs.

2019

The CBMC, SIO, Pristine Seas, Mares Mexicanos, ECOSUR, UADY and the Universidad Veracruzana visited Arrecife Alacranes on the Caribbean Kraken from August 7-11.

2019

Data is handed over to PN Bahía de Loreto (CONANP), and the CBMC participates in the review process of the management program.

2020

Restrictions associated to the COVID-19 pandemic limits scientific work. Monitoring was only conducted at Cabo Pulmo National Park.

2020

CBMC delivers data collected at PN Arrecife Alacranes and Bajos del Norte to CONANP.

2020

An analysis comparing reef biomass in Alacranes and Bajos del Norte is published, showing that geographic isolation is not sufficient to maintain healthy biomass levels.

2021

Three new species of the genus Leptogorgia are described in the Gulf of California.

2021

Data is handed over to RB Islas Marías (CONANP), and CBMC participates in the management program’s review process.

2021

Data is handed over to RB Islas Marías (CONANP), and CBMC participates in the management program’s review process.

2021

The CBMC coordinated a research team with scientists from Scripps Institution of Oceanography and UNAM’s Instituto de Ciencias del Mar y Limnología (ICMyL) during a monitoring trip to Banco Chinchorro from June 28 through July 8.

2022

CBMC conducted monitoring in 76 sites between September and October.

2022

A scientific publication shows the effect of tropicalization on rocky reefs in the Gulf of California.

2023

To celebrate the 25th Anniversary of the reef monitoring program, scientists and photographers recreated the original scientific campaign aboard the Quino El Guardián.

NUMERALIA:

RECORDS IN
THE DATABASE

NÚMERO DE
REGISTROS

SPECIES
RECORDED

NÚMERO
DE ESPECIES

ORGANISMS COUNTED
AND MEASURED

NÚMERO DE INDIVIDUOS
CONTADOS Y MEDIDOS

TRANSECTS
COMPLETED

NÚMERO DE
TRANSECTOS

HOURS SPENT
UNDERWATER

NÚMERO DE HORAS
BAJO EL AGUA

REGION 1

GRANDES ISLAS

REGION 2

SANTA ROSALÍA-BAHÍA CONCEPCIÓN

REGION 3

SAN BASILIO-LORETO-CORREDOR

REGION 4

LA PAZ-LA VENTANA

REGION 5

CABO PULMO-CABO SAN LUCAS

REGION 6

ISLAS MARÍAS-BAHÍA BANDERAS

REGION 7

REVILLAGIGEDO

REGION 8

IXTAPA-HUATULCO

REGION 9

ALACRANES-BAJOS DEL NORTE

GRANDES ISLAS

RELATIVE BIOMASS

Refers to the biomass for each trophic group with respect to the total biomass; it is expressed as a percentage.

41 SITES MONITORED

monitoreados

GRANDES ISLAS

RICHNESS

Total number of species in a type of a specific habitat, ecosystem, area or region.

RICHNESS TOTAL

188

INVERTEBRATES
AND FISHES

GRANDES ISLAS

TRANSECTS

TRANSECTS

DIVERS

METHODOLOGY

THE VALUE OF ROCKY REEFS

In addition to their biological and ecological importance, rocky reefs provide ecosystem services that benefit other ecosystems, species and humans that depend on them.

ECOSYSTEM SERVICES

Fisheries

Many of the species targeted by fishing fleets need rocky reefs at some point during their life cycle. Rocky reefs are important sites for spawning aggregations, they are critical habitats for juveniles and are feeding sites for many other species.

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Tourism

Rocky reefs are priority areas for the diving industry. Scientists estimated that Mexico’s diving industry generated approximately 725 MDD per year.

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Storm protection

Shallow reefs, usually located near the coast, form barriers that absorb most of the energy from the waves and water surge during storms and hurricanes.

Carbon sequestration

Some species that live on rocky reefs, like corals, mollusks that form shells and even algae, help remove dissolved carbon from the water by absorbing it and forming calcareous structures.

CONSULTA LOS METADATOS

SOLICITA DATOS

REFERENCIAS

• Aburto-Oropeza O, Erisman B, Galland GR, Mascareñas-Osorio I, Sala E, Ezcurra E (2011) Large Recovery of Fish Biomass in a No-Take Marine Reserve. PLoS ONE 6(8): e23601.

https://doi.org/10.1371/journal.pone.0023601

• Aburto-Oropeza, O. E. Ezcurra, J. Moxley, A. Sánchez-Rodríguez, I. Mascareñas-Osorio, C. Sánchez- Ortiz, B. Erisman and T. Ricketts. (2015). A framework to assess the health of rocky reefs linking geomorphology, community assemblage, and fish biomass. Ecological Indicators. Volume 52: 353-361.

https://doi.org/10.1016/j.ecolind.2014.12.006

• Aburto Oropeza, O., C. Margarita, B. Erisman, E. Ezcurra. (2017). Bitácora del mar profundo una expedición por el Golfo de California.

• Aburto-Oropeza O, Favoretto F. (2024). Beyond COVID-19: ecotourism's role in ocean conservation targets. Frontiers in Ecology and the Environment.

https://doi.org/10.1002/fee.2712

• Dennis, L.E., F. Favoretto, E.F. Balart, A. Munguía-Vega, C. Sánchez, D.A. Paz-García. (2024) Isolation by disturbance: a pattern of genetic structure of the coral Pocillopora grandis in the Gulf of California. Marine Ecology Progress Series DOI:

https://doi.org/10.3354/meps14553

• Erisman, B. G.R. Galland, I. Mascarenas, J Moxley. (2011). List of coastal fishes of Islas Marías archipelago, Mexico, with comments on taxonomic composition, biogeography, and abundance. Zootaxa. Vol. 2985 No. 1:4.

https://doi.org/10.11646/zootaxa.2985.1.2

• Favoretto, F., I. Mascareñas-Osorio, L. León-Deniz, C. González-Salas, H. Pérez-España, M. Rivera- Higueras, M.A. Ruiz-Zárate, A. Vega-Zepeda, H. Villegas-Hernández, and O. Aburto-Oropeza. (2020). Being isolated and protected is better than just being isolated: a case study from the Alacranes Reef, Mexico. Frontiers in Marine Science 7, 2020: 896.

• Favoretto, F., C. Sánchez, O. Aburto-Oropeza. (2022). Warming and marine heatwaves tropicalize rocky reefs communities in the Gulf of California. Progress in Oceanography. Volume 206: 102838.

https://www.frontiersin.org/articles/10.3389/fmars.2020.583056

• Hernández, O., J. Gomez-Gutiérrez, and C. Sánchez. (2021). Three new species of the sea fan genus Leptogorgia (Octocorallia, Gorgoniidae) from the Gulf of California, Mexico. ZooKeys 1017 (2021):1.

• Mascareñas-Osorio, I., B. Erisman, J. Moxley, E. Balart, O. Aburto-Oropeza. (2011). Checklist of conspicuous reef fishes of the Bahía de los Ángeles region, Baja California Norte, Mexico, with comments on abundance and ecological biogeography. Zootaxa. Issue: Vol. 2922 No. 1. DOI: 10.11646/ZOOTAXA.2922.1.7

• Rodriguez, A. S, Báez, M. M, Aburto-Oropeza, O., Arango, G. H, Masacareñas-Osorio, I., & Erisman, B. (2014). Protocolo de Monitoreo: Para Ambientes Marinos Costeros. UC San Diego: Aburto Lab.

https://escholarship.org/uc/item/23f1404c

• Sala, E., O. Aburto-Oropeza, G. Paredes, I. Parra, J.C. Barrera, P.K. Dayton. (2002) A general model for designing networks of marine reserves. Science 298 (5600), 1991-1993. DOI:10.1126/science.107528

• Sala, E., O. Aburto-Oropeza, M. Reza, G. Paredes. L.G. López-Lemus. (2004). Fishing down coastal food webs in the Gulf of California. Fisheries. Volume29, Issue3. Pages 19-25.

https://doi.org/10.1577/1548-8446(2004)29[19:FDCFWI]2.0.CO;2

• Sánchez-Rodríguez, A., Aburto-Oropeza, O., Erisman, B., Jiménez-Esquivel, V.M., Hinojosa-Arango, G. (2015). Rocky Reefs: Preserving Biodiversity for the Benefit of the Communities in the Aquarium of the World. In: Narchi, N., Price, L. (eds) Ethnobiology of Corals and Coral Reefs. Ethnobiology. Springer, Cham.

https://doi.org/10.1007/978-3-319-23763-3_11

• Ulate, K., T. Alcoverro, R. Arthur, O. Aburto-Oropeza, C. Sánchez, and L. Huato-Soberanis. (2018). Conventional MPAs are not as effective as community co-managed areas in conserving top- down control in the Gulf of California. Biological Conservation 228 (2018): 100-109.

• Vergneau-Grosset, C., R. Boudreau, F. Favoretto, G. Beauchamp, AJ. Chicoine, C. Sánchez and M.Y. Doucet. (2022). Occurrence of Ulcerative Lesions in Sea Stars (Asteroidea) of the Northern Gulf of California, Mexico. The Journal of Wildlife Diseases 58, no. 1 2022: 215-221.