Los patelogastrópodos intermareales de Chile y Perú

Espoz, Carmen; Lindberg, David R.; Castilla, Juan Carlos; Simison, W. Brian

doi:10.4067/s0716-078x2004000200006

Cited by 46 publications

(78 citation statements)

References 16 publications

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“…En el extremo norte de Chile (18°S a 23°S), el evento ENOS es una perturbación que ocasiona procesos de extinción y recolonización local de Lessonia y S. scurra correlacionados con la latitud (Camus 1994, Espoz et al 2004. Sin embargo, la recolonización de S. scurra no está necesariamente acoplada con Lessonia (Meynard 2014).…”

Section: Para Lessonia Trabeculata)unclassified

“…La distribución latitudinal de S. scurra abarca la costa de Chile entre los 24ºS y 42ºS, siempre en presencia del huiral que forma Figura 1. A) Área de estudio, destacada en el rectángulo con línea punteada; B) Asociación Scurria-Lessonia; C) Scurria scurra sobre estipes de Lessonia berteroana (ex L. nigrescens) en el área marina protegida de Isla Choros, D) en el área de libre acceso de Totoral Bajo; y E) sobre un estipe de Lessonia spicata (ex L. nigrescens) en la costa de Concepción / A) The study area highlighted in rectangle with dotted line; B) Scurria-Lessonia association; C) Scurria scurra on stipes of Lessonia berteroana (ex L. nigrescens) in marine protected areas of Isla Choros, D) in open access area of Totoral Bajo; and E) on a stipe of L. spicata in Concepción coast el complejo de especies L. nigrescens en la zona intermareal baja (Espoz et al 2004); constituido por L. berteroana al norte de los 30°S y L. spicata hacia el sur de esta latitud, respectivamente (González et al 2012). Los individuos más grandes de S. scurra habitan las partes proximales de los estipes en cavidades que horadan al alimentarse progresivamente del tejido de Lessonia spp.…”

Section: Introductionunclassified

“…Históricamente, eventos ENOS (El Niño-Oscilación del Sur) producen procesos de extinción local y recolonización de las praderas de L. berteroana en el norte de Chile afectando significativamente la asociación Scurria-Lessonia (Camus 1994, Espoz et al 2004. El efecto neto de esta perturbación natural resulta en cambios de los patrones de distribución a nivel local y regional y en la abundancia de S. scurra, debido a la lenta tasa de renovación de las praderas de L. berteroana después del evento (Camus 1994), incluso se ha detectado una compresión del rango de distribución de la especie hacia el sur (Espoz et al 2004).…”

Section: Introductionunclassified

“…El efecto neto de esta perturbación natural resulta en cambios de los patrones de distribución a nivel local y regional y en la abundancia de S. scurra, debido a la lenta tasa de renovación de las praderas de L. berteroana después del evento (Camus 1994), incluso se ha detectado una compresión del rango de distribución de la especie hacia el sur (Espoz et al 2004). …”

Section: Introductionunclassified

“…Se ha postulado que la pesquería de algas pardas, una perturbación de origen antrópico, también amenaza la asociación Scurria-Lessonia (Espoz et al 2004), y la biota que estas especies fundacionales sostienen (Camus 1994, Vega et al 2014. Considerando lo anterior, y que S. Scurria es un Patelogastrópodo representativo de las comunidades asociadas a praderas del complejo de especies L. nigrescens (Cancino & Santelices 1984, Vásquez & Santelices 1984, Camus 1994, Vásquez et al 2001 (Fig.…”

Section: Introductionunclassified

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Asociación Scurria-Lessonia, indicador de integridad ecológica en praderas explotadas de huiro negro Lessonia berteroana (ex L. nigrescens) en el norte de Chile

Vega

Asorey

Piaget

2016

Rev. biol. mar. oceanogr.

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Abstract.-Scurria scurra is a patelogastropod inhabiting the stipes and holdfasts cavities of Lessonia nigrescens complex species forming a herbivore-kelp association highly specialized. It has been proposed that the exploitation of kelp beds of Lessonia berteroana in northern Chile is a disturbance that affects Scurria-Lessonia association such as ENSO (El Niño-Southern Oscillation) events. Considering the above, and the important ecological role that have kelps as foundation species, this study proposes the use of Scurria-Lessonia association as an ecological indicator to monitor the integrity of kelp beds of L. berteroana. To achieve this, the abundance and size structure of S. scurra in plants of L. berteroana was evaluated under 3 different types of conservation strategies of fishing resources: open access areas and management areas (with harvest), and marine protected areas (without harvest) in the Region of Atacama and Region of Coquimbo, Chile. In addition, we monitored the time of recovery post-harvest of Scurria-Lessonia association in an experimental site (Lagunillas, 30°S). The results show that S. scurra population in open accessareas is dominated by juveniles in low abundances, a situation not detected in management areas and marine protected areas. Furthermore, the recovery of S. scurra post-harvest of Lessonia at the experimental site took more than 2 years (30 months). An indicator was proposed to validate the actions of management plan of brown algae for open access areas to fisheries. This ecological indicator is easy to observe, evaluate and disseminate among users of the productive chain of Chilean kelp resource. Key words: Kelp fisheries, ecological indicators, marine conservation, northern ChileResumen.-Scurria scurra es un patelogastrópodo que habita los estipes y cavidades de discos adhesivos del complejo de especies Lessonia nigrescens formando una asociación herbívoro-alga altamente especializada. En el norte de Chile, se ha propuesto que la explotación de praderas de Lessonia berteroana es una perturbación que afecta la asociación Scurria-Lessonia de manera similar que los eventos ENOS (El Niño-Oscilación del Sur). Considerando lo anterior, y el importante rol ecológico que cumplen las algas pardas como especies fundacionales, este estudio propone el uso de la asociación Scurria-Lessonia como un indicador ecológico para monitorear la integridad de praderas explotadas de L. berteroana.

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Section: Para Lessonia Trabeculata)unclassified

Section: Introductionunclassified

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Asociación Scurria-Lessonia, indicador de integridad ecológica en praderas explotadas de huiro negro Lessonia berteroana (ex L. nigrescens) en el norte de Chile

Vega

Asorey

Piaget

2016

Rev. biol. mar. oceanogr.

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Different kelp species support unique macroinvertebrate assemblages, suggesting the potential community‐wide impacts of kelp harvesting along the Humboldt Current System

Carbajal

Salazar

Moore

et al. 2021

Aquatic Conservation

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1. Kelp forests provide habitat for myriad species yet remain poorly studied in some ecoregions, including where there is increasing interest in commercial kelp harvesting for the lucrative alginate industry. 2. To identify indicators for monitoring the impacts of kelp harvesting, the structure and composition of macrobenthic invertebrate assemblages associated with large brown macroalgae, Eisenia cokeri, Lessonia trabeculata and Macrocystis pyrifera, from the Humboldt Current System of Peru were determined.3. Within kelp habitats two distinct habitats were sampled: (a) adult kelp holdfasts; and (b) the benthos adjacent to the kelp sporophyte (hereafter under-canopy rock). For each sample, organisms were identified, enumerated and weighed.4. Totals of 108, 102 and 113 different species were found associated with Eisenia cokeri, M. pyrifera and L. trabeculata, respectively comprising distinct assemblages associated with each kelp forest. Both habitat types (holdfasts and under-canopy rock) supported diverse, but different, macroinvertebrate assemblages, with richness, abundance and functional trophic groups in general higher in holdfasts compared with on under-canopy rock. Lastly, macroinvertebrate abundance, biomass, and species richness significantly increased with holdfast size. 5. Results confirm that each kelp species is unique in terms of associated assemblage composition and indicate that kelp harvesting for the alginate industry may have large impacts. We suggest that these effects on associated biodiversity should be incorporated within kelp harvesting management plans.6. We suggest that holdfast diameter is a good ecological indicator as reductions in holdfast size across the population will indicate a decline in the diversity of macroinvertebrates that are important food sources for higher order organisms. We therefore suggest that monitoring studies include morphological measurements as well as measurement of kelp density.

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Positive and negative effects of mesograzers on early‐colonizing species in an intertidal rocky‐shore community

Tejada‐Martinez

López

Bonta

et al. 2016

Ecology and Evolution

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The ecological consequences of human‐driven overexploitation and loss of keystone consumers are still unclear. In intertidal rocky shores over the world, the decrease of keystone macrograzers has resulted in an increase in the dominance of herbivores with smaller body (i.e., “mesograzers”), which could potentially alter community assembly and structure. Here, we experimentally tested whether mesograzers affect the structure of rocky intertidal communities during the period of early colonization after the occurrence of a disturbance. A manipulative field experiment was conducted to exclude mesograzers (i.e., juvenile chitons, small snails, amphipods, and juvenile limpets) from experimental areas in an ecosystem characterized by the overexploitation of keystone macrograzers and predators. The results of multivariate analyses suggest that mesograzers had significant effects on intertidal community structure through negative and positive effects on species abundances. Mesograzers had negative effects on filamentous algae, but positive effects on opportunistic foliose algae and barnacles. Probably, mesograzers indirectly favored the colonization of barnacles and foliose algae by removing preemptive competitors, as previously shown for other meso‐ and macrograzer species. These results strongly support the idea that small herbivores exert a firm controlling effect on the assembly process of natural communities. Therefore, changes in functional roles of top‐down controllers might have significant implications for the structure of intertidal communities.

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Los patelogastrópodos intermareales de Chile y Perú

Cited by 46 publications

References 16 publications

Asociación Scurria-Lessonia, indicador de integridad ecológica en praderas explotadas de huiro negro Lessonia berteroana (ex L. nigrescens) en el norte de Chile

Asociación Scurria-Lessonia, indicador de integridad ecológica en praderas explotadas de huiro negro Lessonia berteroana (ex L. nigrescens) en el norte de Chile

Different kelp species support unique macroinvertebrate assemblages, suggesting the potential community‐wide impacts of kelp harvesting along the Humboldt Current System

Positive and negative effects of mesograzers on early‐colonizing species in an intertidal rocky‐shore community

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