Spatial and mass balanced trophic models of La Rinconada Marine Reserve (SE Pacific coast), a protected benthic ecosystem: Management strategy assessment

Ortiz, Marco; Avendaño, Miguel; Campos, Leonardo; Berríos, Fernando

doi:10.1016/j.ecolmodel.2009.08.020

Cited by 24 publications

(12 citation statements)

References 47 publications

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“…Modelling studies possessed even less generality, with a majority describing theoretical species, locations and times and lacking any grounding in measured data. Among the 72 studies extracted by literature search with emphasis on development of new mathematical models, only 15 studies (21% of total) described models based on data for two or more species or were structured with respect to multi‐species assemblages, such as trophic models (Ortiz et al , ). Thus, the great majority of MPA models assume that species operate in isolation from each other.…”

Section: Commentarymentioning

confidence: 99%

Does the global network of marine protected areas provide an adequate safety net for marine biodiversity?

Edgar

2011

Aquatic Conserv: Mar. Freshw. Ecosyst.

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Section: Commentarymentioning

confidence: 99%

Does the global network of marine protected areas provide an adequate safety net for marine biodiversity?

Edgar

2011

Aquatic Conserv: Mar. Freshw. Ecosyst.

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“…To analyze the distribution of metals, the food web structure was determined by consulting ecological studies that included information on the stomach contents, feeding strategies, and habitat preferences of the different benthic species found in San Jorge Bay (Laudin et al 2007;González et al 2008;Ortiz 2008;Ortiz et al 2009Ortiz et al , 2010. The species were El contenido de metales en sedimentos y organismos se midió en un espectrofotómetro de absorción atómica Shimadsu 6300, con técnica de llama.…”

Section: Materiales Y Métodosmentioning

confidence: 99%

“…Para el estudio de la distribución de metales, se determinó la estructura de las redes tróficas mediante una revisión de estudios ecológicos que incluyeran información sobre el contenido estomacal, las estrategias de alimentación y las preferencias de hábitat de las diferentes especies bentónicas presentes en la bahía San Jorge (Laudin et al 2007;González et al 2008;Ortiz 2008;Ortiz et al 2009Ortiz et al , 2010. Las especies fueron divididas en cuatro grupos tróficos: filtradores, suspensívoros, herbívoros y carnívoros.…”

Section: Materiales Y Métodosunclassified

Cu, Pb, and Zn content in sediments and benthic organisms from San Jorge Bay (northern Chile): Accumulation and biotransference in subtidal coastal systems

et al. 2014

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The concentration of Cu, Pb, and Zn was measured in order to evaluate their sediment enrichment and probable biomagnification trends in benthic trophic chains of the coastal zone of San Jorge Bay (northern Chile). The mean concentrations of Cu, Zn, and Pb were 103.6, 72.6, and 38.6 mg kg-1 , respectively, in sediments and 28.3, 32.5, and 21.9 mg kg-1 , respectively, in organisms. The geoaccumulation index indicated that sectors with industrial activities show some degree of metal enrichment; however, Zn and Pb contents have diminished in recent years, probably as a consequence of the closing of storage facilities for these minerals in the coastal zone of the bay. Evidence of biomagnification was observed in three of the seven coastal sectors studied, and herbivorous and carnivorous species showed the highest transfer factors of these metals. The results of this work suggest a high temporal variability of metal content in sediments and benthic organisms, which can be explained by changes in natural and anthropic factors that control the sources and accumulation of these metals in the coastal area of San Jorge Bay.

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“…Among the A. purpuratus banks most affected by overexploitation is the La Rinconada sector of Antofagasta (Figure 1). This bank is considered the most important natural bank in the country, both in terms of the population size of A. purpuratus and associated ecological diversity (Villanueva, 1974; Ortiz et al, 2009; Ortiz et al, 2010). In addition, the La Rinconada bank population shows hybrid vigour, providing a basis for recovery of the population as well as populations on other exploited banks (Moraga et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Implementation of seed collection programs for the recovery of Argopecten purpuratus populations in the La Rinconada marine reserve (Antofagasta, Chile)

Avendaño

Cantillánez

González

2022

Aquatic Conservation

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‘La Rinconada Marine’ Reserve (MR), Chile was created in 1997 to preserve the genetic stock of the scallop Argopecten purpuratus and eventually to supply seed to areas outside of the reserve and support aquaculture activities. Data from biological and fisheries monitoring of A. purpuratus as well as environmental conditions in the MR are available for the period from 1993 to 2009. The continuous extraction of A. purpuratus from La Rinconada MR in Chile, without a science‐based exploitation plan, has not only decreased the abundance and population structure of the species but has also significantly affected seed settlement in artificial collectors and population recruitment. Therefore, the goals of the MR have not been achieved. This review of biological and fishing studies of A. purpuratus in La Rinconada MR provides a basis for the implementation of a sustainable programme for the natural collection of A. purpuratus seed for population recovery. A. purpuratus recruitment varies substantially between years and is not strongly related to the size of the parental population. Larval collection and recruitment depend on environmental events (El Niño‐Southern Oscillation) and biological substrate availability (Rhodymenia red algae). These factors produce a bentho‐pelagic decoupling between parental abundance, larval production and subsequent recruitment of A. purpuratus that limits stock recovery in the MR. To address the poor population status of A. purpuratus in the MR, recovery of the adult population is needed. Therefore, an assisted collection and recruitment strategy is proposed to increase the population and enable the generation of surplus seed, fulfilling the initial aims of La Rinconada MR.

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Spatial and mass balanced trophic models of La Rinconada Marine Reserve (SE Pacific coast), a protected benthic ecosystem: Management strategy assessment

Cited by 24 publications

References 47 publications

Does the global network of marine protected areas provide an adequate safety net for marine biodiversity?

Does the global network of marine protected areas provide an adequate safety net for marine biodiversity?

Cu, Pb, and Zn content in sediments and benthic organisms from San Jorge Bay (northern Chile): Accumulation and biotransference in subtidal coastal systems

Implementation of seed collection programs for the recovery of Argopecten purpuratus populations in the La Rinconada marine reserve (Antofagasta, Chile)

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