Descripción
Comprehensive information on Antarctic macrobenthic community structure is publicly available since the 1960s. It stems from trawl, dredge, grab, and corer samples as well as from direct and camera observations (Table 1). The quality of this information varies considerably; it consists of pure descriptions, figures for presence (absence) and abundance of some key taxa or proxies for such parameters, e.g. sea-floor cover. Some data sets even cover a defined and complete proportion of the macrobenthos with further analyses on diversity and zoogeography. As a consequence the acquisition of data from approximately 90 different campaigns assembled here was not standardised. Nevertheless, it was possible to classify this broad variety of known macrobenthic assemblages to the best of experts knowledge (Gutt 2007; Fig. 1). This overview does not replace statistically sound community and diversity analyses. However, it shows from where which kind of information is available and it acts as an example of the feasibility and power of such data collections. The data set provides unique georeferenced biological basic information for the planning of future coordinated research activities, e.g. under the umbrella of the biology program "Antarctic Thresholds - Ecosystem Resilience and Adaptation" (AnT-ERA) of the Scientific Committee on Antarctic Research (SCAR) and especially for actual conservation issues, e.g. the planning of Marine Protected Areas (MPA's) by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR).
Registros
Los datos en este recurso de registros biológicos han sido publicados como Archivo Darwin Core(DwC-A), el cual es un formato estándar para compartir datos de biodiversidad como un conjunto de una o más tablas de datos. La tabla de datos del core contiene 861 registros.
Este IPT archiva los datos y, por lo tanto, sirve como repositorio de datos. Los datos y los metadatos del recurso están disponibles para su descarga en la sección descargas. La tabla versiones enumera otras versiones del recurso que se han puesto a disposición del público y permite seguir los cambios realizados en el recurso a lo largo del tiempo.
Versiones
La siguiente tabla muestra sólo las versiones publicadas del recurso que son de acceso público.
¿Cómo referenciar?
Los usuarios deben citar este trabajo de la siguiente manera:
Gutt J, Barnes DKA, Lockhart S: Antarctic macrobenthic communities: A compilation of circumpolar information
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es Antarctic Biodiversity Information Facility (ANTABIF). This [DATA(BASE)-NAME] is made available under the Open Data Commons Attribution License: http://www.opendatacommons.org/licenses/by/1.0/
Registro GBIF
Este recurso ha sido registrado en GBIF con el siguiente UUID: dd92c709-8f7d-4bf3-9897-901aa88486e5. Antarctic Biodiversity Information Facility (ANTABIF) publica este recurso y está registrado en GBIF como un publicador de datos avalado por Scientific Committee on Antarctic Research.
Palabras clave
macrobenthic communities; trawls; dredges; grabs; corers; direct observations (scuba-diving; sea-bed video; sea-bed photography)
Contactos
- Proveedor De Los Metadatos ●
- Originador ●
- Punto De Contacto
- Editor
- Editor
Cobertura geográfica
The area generally covers almost the entire Southern Ocean, including some ice-shelf covered sites. The vast majority of information is from shelf areas around the continent at water depth shallower than 800m. Non-ice shelf covered shelf areas can be up to 300km wide or the shelf-edge at 600 to 800m depth can "disappear" beneath the floating ice-shelf. Shallow areas (<50m) are rare because 86% of the coast-line is glaciated or consists of an ice-shelf egde. A non-glaciated coast mainly exists along the Antarctic Peninsula. The coastline is either extremely complex with bays, channels , peninsulas, islands etc or less structured, especially where it is formed by the ice-shelf. Overdeepenend basins (inner-shelf depressions) can reach >1200m water depth. Most islands exist west of the Antarctic Peninsula and along the Scotia Arc linking the Peninsula with the southern tip of South America. The coastal waters are mainly affected by the Antarctic Coastal Current (East Wind Drift), whilst the largest off-shore part of the Southern Ocean is dominated by the Antarctic Circumpolar Current (West Wind Drift) with gyres of different size. Sediments are predominantly poorly sorted but also cobble "fields", bedrock and pure soft sediments exist. The Antarctic marine ecosystem is shaped by a distinct seasonality of the sea-ice cover affecting a short and intensive primary production in austral summer, by predominantly stable low temperature to which most organisms are specifically adapted and almost missing terrestrial run-off. Most of the shelf-inhabiting macrobenthic species are endemic; some taxa reach above-average species richness (Clarke & Johnston 2003). Only few marine habitats are protected, most of which are small. Plans and proposals for large Marine Protected Areas (MPA's), e.g. in East Antarctica, in the Ross and Weddell Seas exist and demand good scientific knowledge and data.
| Coordenadas límite | Latitud Mínima Longitud Mínima [-83, -180], Latitud Máxima Longitud Máxima [-52, 180] |
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Cobertura taxonómica
Macrobenthic communities have been uploaded in the category "vernacularNames", abbreviations in "taxonRemarks".
Cobertura temporal
| Fecha Inicial / Fecha Final | 1956-03-01 / 2010-02-21 |
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Datos del proyecto
No hay descripción disponible
| Título | Antarctic macrobenthic communities: A compilation of circumpolar information |
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Personas asociadas al proyecto:
- Editor
Métodos de muestreo
This project aggregates data from various expeditions with a full range of benthic sampling methods, such as grabs, corers, dredges, and trawls as well as non-invasive observations by scuba divers, stationary, towed, or ROV-based still and video-cameras. For detail descriptions see original publications in journals or data repositories (Table 1).
| Área de Estudio | Southern Ocean with emphasize on coastal shelf areas and some islands without specific temporal patterns of sampling. |
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| Control de Calidad | A first version of the classification of the macrobenthic communities had been published in a peer-reviewed journal (Gutt 2007). A modified version had been published in the Antarctic Climate Change and the Environment report (ACCE, Turner et al. 2009). The actual version is depicted in Fig. 1. |
Descripción de la metodología paso a paso:
- Attribution of the information from the different sources (for references see Table 1) to the classified macrobenthic assemblages (Fig. 1) was done to the best of experts knowledge. The principal parameter, on which theses assumptions have been made was biomass or a proxy for biomass such as sea-floor coverage. Some information on benthic functioning is also included directly or indirectly, e.g. predation, competition, succession after ice-berg scouring, epi-biotic life-mode and oligotrophic conditions under ice shelves.
Datos de la colección
| Nombre de la Colección | nil |
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| Identificador de la Colección | nil |
| Identificador de la Colección Parental | nil |
| Métodos de preservación de los ejemplares | Otro |
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Referencias bibliográficas
- Clarke A, Johnston NM 2003. Antarctic marine benthic diversity. Oceanography and Marine Biology: an Annual Review 41: 47-114 Gutt J 2007. Antarctic macro-zoobenthic communities: a review and an ecological classification. Antarctic Science 9: 165-182 Turner J, Bindschadler R, Convey P, di Prisco G, Fahrbach E, Gutt J, Hodgson D, Mayewsky P, Summerhayes C 2009. Antarctic Climate Change and the Environment. SCAR, Scott Polar Research Institute, Cambridge; 526pp
Metadatos adicionales
Additional files uploaded: list of references (Table 1) & classification of macrobenthic communities (Fig. 1).