Las areas de filtracion de metano constituyen zonas de agregación del bacalao de profundidad (Dissostichus eleginoides) frente a Chile central

Sellanes, Javier; Pedraza-García, Milton; Zapata‐Hernández, Germán

doi:10.3856/vol40-issue4-fulltext-14

Cited by 12 publications

(11 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Even just considering the microbial community in this context, these habitats are an important sink for oxygen (Boetius and Wenzhofer, 2013) and thus both primary and secondary production. Furthermore, the hard substrate habitat created by the microbial processes at seeps provides a habitat for corals and other ecosystem engineers that create additional hotspots of secondary production (Cordes et al, 2008;Lessard-Pilon et al, 2010) and fish (Sellanes et al, 2012; Fig. 1).…”

Section: In Situ Primary and Secondary Productionmentioning

confidence: 99%

Ecosystem function and services provided by the deep sea

et al. 2014

View full text Add to dashboard Cite

Abstract. The deep sea is often viewed as a vast, dark, remote, and inhospitable environment, yet the deep ocean and seafloor are crucial to our lives through the services that they provide. Our understanding of how the deep sea functions remains limited, but when treated synoptically, a diversity of supporting, provisioning, regulating and cultural services becomes apparent. The biological pump transports carbon from the atmosphere into deep-ocean water masses that are separated over prolonged periods, reducing the impact of anthropogenic carbon release. Microbial oxidation of methane keeps another potent greenhouse gas out of the atmosphere while trapping carbon in authigenic carbonates. Nutrient regeneration by all faunal size classes provides the elements necessary for fueling surface productivity and fisheries, and microbial processes detoxify a diversity of compounds. Each of these processes occur on a very small scale, yet considering the vast area over which they occur they become important for the global functioning of the ocean. The deep sea also provides a wealth of resources, including fish stocks, enormous bioprospecting potential, and elements and energy reserves that are currently being extracted and will be increasingly important in the near future. Society benefits from the intrigue and mystery, the strange life forms, and the great unknown that has acted as a muse for inspiration and imagination since near the beginning of civilization. While many functions occur on the scale of microns to meters and timescales up to years, the derived services that result are only useful after centuries of integrated activity. This vast dark habitat, which covers the majority of the globe, harbors processes that directly impact humans in a variety of ways; however, the same traits that differentiate it from terrestrial or shallow marine systems also result in a greater need for integrated spatial and temporal understanding as it experiences increased use by society. In this manuscript we aim to provide a foundation for informed conservation and management of the deep sea by summarizing the important role of the deep sea in society.

show abstract

Section: In Situ Primary and Secondary Productionmentioning

confidence: 99%

Ecosystem function and services provided by the deep sea

et al. 2014

View full text Add to dashboard Cite

show abstract

“…), and structural habitat for predatory fish and crabs (Patagonian toothfish, Sellanes et al . , ; orange roughy, Bowden et al ; sablefish, B. M. Grupe & L. A. Levin, personal observations; lithodid decapods, Niemann et al . ).…”

Section: Introductionmentioning

confidence: 98%

“…High beta diversity at seeps and surrounding regions can enhance the overall species richness, ecosystem function, and biological regulation that can occur on continental margins (Danovaro et al 2008;Levin et al 2010. Examples of non-endemic seep fauna utilizing the habitat offered by methane seeps include egg-laying sites and nurseries for benthic octopuses and elasmobranchs (Treude et al 2011;Drazen et al 2003), sponge-garden refugia for macro-fauna , and structural habitat for predatory fish and crabs (Patagonian toothfish, Sellanes et al 2008Sellanes et al , 2012; orange roughy, Bowden et al 2013; sablefish, B. M. Grupe & L. A. Levin, personal observations;lithodid decapods, Niemann et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Methane seep ecosystem functions and services from a recently discovered southern California seep

et al. 2015

View full text Add to dashboard Cite

The recent discovery of a methane seep with diverse microhabitats and abundant groundfish in the San Diego Trough (1020 m) off the coast of Del Mar, California raised questions about the role of seep ecosystem functions and services in relation to continental margins. We used multicorer and ROV grab samples and an ROV survey to characterize macrofaunal structure, diversity, and trophic patterns in soft sediments and authigenic carbonates; seep microhabitats and taxa observed; and the abundance and spatial patterns of fisheryrelevant species. Biogenic microhabitats near the Del Mar Seep included microbially precipitated carbonate boulders, bacterial mats, vesicomyid clam beds, frenulate and ampharetid beds, vestimentiferan tubeworm clumps, and fields of Bathysiphon filiformis tubes. Macrofaunal abundance increased and mean faunal d 13 C signatures decreased in multicorer samples nearer the seep, suggesting that chemosynthetic production enhanced animal densities outside the seep center. Polychaetes dominated sediments, and ampharetids became especially abundant near microbial mats, while gastropods, hydroids, and sponges dominated carbonate rocks. A wide range of stable isotopic signatures reflected the diversity of microhabitats, and methane-derived carbon was the most prevalent source of nutrition for several taxa, especially those associated with carbonates. Megafaunal species living near the seep included longspine thornyhead (Sebastolobus altivelis), Pacific dover sole (Microstomus pacificus), and lithodid crabs (Paralomis verrilli), which represent targets for demersal fisheries. Sebastolobus altivelis was especially abundant (6.5-8.2 fishÁ100 m À2 ) and appeared to aggre-

show abstract

“…Esto sugiere que el bacalao recorre o se concentra sobre áreas profundas donde es posible hallar estos organismos bentónicos. Sellanes et al (2012) han encontrado similares resultados frente a Concepción (Chile), sus resultados sugieren que la mayor concentración de individuos de D. eleginoides estuvo asociada a zonas con presencia de filtraciones de metano (Cold Seeps), es decir, este tipo de hábitat dependiente de bacterias quimiosintéticas, con una gran riqueza en comunidades de invertebrados (entre las cuales están los poliquetos), podría ser un sitio de concentración frecuente de algunos recursos pesqueros como el bacalao de profundidad.…”

Section: Sostenibilidad De La Pesquería De D Eleginoides En Perú: Faunclassified

Breve síntesis sobre el recurso bacalao de profundidad Dissostichus eleginoides en Perú

Aramayo

2016

Rev. biol. mar. oceanogr.

View full text Add to dashboard Cite

Abstract.-The Southeastern Pacific Ocean is characterized by a large diversity of marine living resources with a high demand in world markets. Deep-water species such as the Patagonian toothfish Dissostichus eleginoides are among the most important marine resources in this region. Peru has a Patagonian toothfish fishery dating back 15 years, with relevant international markets for exportation. However, similar that others countries in the region, Peru has poor scientific data for stock assessment of this species. Furthermore, the current monitoring program of this fishery does not provide an adequate control of onboard catches, which might influence even more the real values of landings. It is urgent the development of comprehensive research programs that promote population studies on this resource and the sustainability of its fishery. For instance, this can be reached by integrating international efforts for exploring the ocean's diversity in deep regions and promoting the study and assessment of potential new marine resources. The permanent exploitation of this long-lived and slow-growing marine species without further research and strict fishing control could jeopardize, in the medium and long term, not only its fishery but the availability of this marine resource in Peruvian waters. Key words: Patagonian toothfish, Dissostichus eleginoides, fishery, PeruResumen.-El Pacífico Oriental Sur se caracteriza por tener una importante diversidad de recursos marinos de muy alta demanda comercial en el mundo. Especies de aguas profundas como el Bacalao de Profundidad Dissostichus eleginoides están entre los recursos importantes en varios países de esta región. Perú tiene una pesquería para este recurso desde hace más de 15 años con importantes mercados para la exportación; sin embargo, al igual que otros países de la región, aún resulta incompleta la información científica para evaluar el real estado poblacional de esta especie. Asimismo, la actual normativa pesquera no tiene suficiente alcance para controlar y monitorear las capturas y desembarques de esta pesquería de forma eficiente. Urge el fortalecimiento de programas integrales de investigación que impulsen los estudios poblacionales sobre este recurso y la sostenibilidad de su pesquería, contextualizando dicho esfuerzo en el marco de iniciativas internacionales para la exploración tanto de la diversidad en regiones profundas del océano como en la evaluación de recursos potenciales. La explotación pesquera permanente sobre esta especie de lento crecimiento y baja tasa de reprodución, sin un adecuado marco de investigación y control, puede poner en riesgo a mediano y a largo plazo, no sólo la actividad pesquera misma, sino también, la disponibilidad de este recurso en aguas peruanas.

show abstract

Las areas de filtracion de metano constituyen zonas de agregación del bacalao de profundidad (Dissostichus eleginoides) frente a Chile central

Cited by 12 publications

References 18 publications

Ecosystem function and services provided by the deep sea

Ecosystem function and services provided by the deep sea

Methane seep ecosystem functions and services from a recently discovered southern California seep

Breve síntesis sobre el recurso bacalao de profundidad Dissostichus eleginoides en Perú

Contact Info

Product

Resources

About