Benthic marine mollusks of the Strait of Magellan, Chile (Polyplacophora, Gastropoda, Bivalvia): a historical review of Natural History

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 2.579 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:

Aldea C, Alcaino S, Novoa L, Rosenfeld S (2019): Benthic marine mollusks of the Strait of Magellan, Chile (Polyplacophora, Gastropoda, Bivalvia): a historical review of Natural History. v1. Universidad de Magallanes. Dataset/Occurrence. https://gbif-chile.mma.gob.cl/ipt/resource?r=moluscos-estrecho-magallanes&v=1.0

Derechos

Los usuarios deben respetar los siguientes derechos de uso:

El publicador y propietario de los derechos de este trabajo es Universidad de Magallanes. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento-NoComercial (CC-BY-NC 4.0).

Registro GBIF

Este recurso ha sido registrado en GBIF con el siguiente UUID: 204130fb-8924-4601-b015-69411d9d7917.  Universidad de Magallanes publica este recurso y está registrado en GBIF como un publicador de datos avalado por GBIF Chile.

Palabras clave

Occurrence; literature; Magellanic Biogeographic Province; South Pacific; South Atlantic; species richness; benthos; Mollusca; Observation

Contactos

Cobertura geográfica

One of the most important channels in the Magellanic Province is the Strait of Magellan, where most historical reports of mollusks are focused. This extensive channel connects the Pacific and Atlantic Oceans and is considered the most important one of the province. It is influenced by water masses of the Pacific, Atlantic and Southern Oceans, and it possess several geological characteristics derived from the last glaciation (Antezana 1999).

Cobertura taxonómica

To make the list of mollusks as complete as possible, information was gathered from all the available scientific publications that have sampled or reviewed benthic marine mollusks in the Magellanic Province, from the expedition of the HMS Beagle in the 19th century (King and Broderip 1832) to the present. A total of 323 articles were reviewed, of which 146 contained species within the Magellanic Province. The records and their respective geographical positions were entered into a spreadsheet structured with the Darwin Core Standard (Wieczorek et al. 2012), adjusted taxonomically according to the MolluscaBase (2019) and the revisions of classification and systematics of gastropods (Bouchet et al. 2017), bivalves (Nevesskaja 2009) and polyplacophorans (Sirenko 2006).

Cobertura temporal

Datos del proyecto

Diversity of benthic molluscs and crustaceans in the Strait of Magellan: biogeography, nestedness and comparative endemism in the Magellan Biogeographic Province

Personas asociadas al proyecto:

Métodos de muestreo

To make the list of mollusks as complete as possible, information was gathered from all the available scientific publications that have sampled or reviewed benthic marine mollusks in the Magellanic Province, from the expedition of the HMS Beagle in the 19th century (King and Broderip 1832) to the present. A total of 323 articles were reviewed, of which 146 contained species within the Magellanic Province. The records and their respective geographical positions were entered into a spreadsheet structured with the Darwin Core Standard (Wieczorek et al. 2012), adjusted taxonomically according to the MolluscaBase (2019) and the revisions of classification and systematics of gastropods (Bouchet et al. 2017), bivalves (Nevesskaja 2009) and polyplacophorans (Sirenko 2006).

Descripción de la metodología paso a paso:

1. The Strait of Magellan was divided into 420 quadrants of 6x6 minutes of latitude and longitude. The records located within this area were analyzed (Fig. 1), taking into account their georeference or approximate location. This analysis was developed using a tools for Google Earth (https://www.earthpoint.us), which transforms XLS extension files (Excel format) to KML (files that contains geographic data). In total, 108 articles provided records for the Strait of Magellan. Dubious records were counted and also the species that were recorded only once in history. Criteria were followed to determine which species records are doubtful: species that were cited once and later questioned in taxonomic revisions or never reported again; species that greatly exceed their distribution limit and do not appear in taxonomic revisions or alpha diversity studies; and species that have a huge geographical discontinuity and are not explained or figured in the article. A new matrix was elaborated with the Darwin Core standard from the database, with presence-absence data of each taxon per quadrant entered as 1 or 0, respectively. The quadrants with no species were removed from the matrix and the species considered doubtful and the taxa with imprecise locations were not included in the matrix. However, these were considered in the quantification of total richness. On the other hand, the records up to or above genus level (registered as "indet." or "sp.") were not considered as valid species for both species richness values and estimation models, except for those in which the author commented that it could be a new species.

Referencias bibliográficas

1. Antezana T (1999) Hydrographic features of Magellan and Fuegian inland passages and adjacent Subantarctic waters. Scientia Marina 63(S1): 23–34.
2. Bouchet P, Rocroi J, Hausdorf B, Kaim A, Kano Y, Nützel A, Parkhaev P, Schrödl M Strong E (2017) Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia, 61 (1–2), 1–526.
3. King PP, Broderip WJ (1832) Description of the Cirripedia, Conchifera and Mollusca, in a collection formed by the officers of H.M.S. Adventure and Beagle employed between the years 1826 and 1830 in surveying the southern coasts of South America. Zoological Journal 5: 332–349.
4. MolluscaBase eds. (2019) MolluscaBase. Accessed at https://www.molluscabase.org on 2019-07-31.
5. Nevesskaja L (2009) Principles of systematics and the system of bivalves. Paleontological Journal, 43 (1): 1–11.
6. Sirenko BI (2006) New Outlook оn the System of Chitons (Mollusca: Polyplacophora). Venus, 65 (1–2): 27–49.
7. Wieczorek J, Bloom D, Guralnick R, Blum S, Döring M, Giovanni R, Robertson T, Vieglais D (2012) Darwin Core: An evolving community-developed biodiversity data standard. PloS ONE 7(1): e29715.

Metadatos adicionales