Descripción
This study investigates the distribution patterns of subtidal benthic communities in the Strait of Magellan.
Conducted during the austral winter of 2021, the field expedition surveyed five locations through scuba diving and photographic records along vertical transects.
This study provides relevant information on subtidal biodiversity in rocky habitats of southern Chile.
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 180 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.
Derechos
Los usuarios deben respetar los siguientes derechos de uso:
El publicador y propietario de los derechos de este trabajo es Fundación Rewilding Chile. Esta obra está bajo una licencia Creative Commons de Atribución/Reconocimiento (CC-BY 4.0).
Registro GBIF
Este recurso ha sido registrado en GBIF con el siguiente UUID: 441fec02-b448-4db6-80bd-51fdf11bb611. Fundación Rewilding Chile publica este recurso y está registrado en GBIF como un publicador de datos avalado por GBIF Chile.
Palabras clave
Occurrence; Benthos; Diversity; Subtidal zone; Marine invertebrates; Observation
Contactos
- Originador
- Proveedor De Los Metadatos ●
- Punto De Contacto
Cobertura geográfica
Study Sites in the Strait of Magellan
1. Carlos III Island
Located at the boundary between the central and western micro-basins of the Strait of Magellan. This station borders the Francisco Coloane Multiple-Use Marine Protected Area, which covers approximately 672 km².
2. Clarence Island – Simón Bay and Bell Bay
Located approximately 30 km southeast of Carlos III Island. Both bays open directly into the Strait of Magellan and lie within the Kawésqar National Reserve.
3. Brunswick Peninsula – Cape San Isidro and Observatorio Island
Located approximately 60 km southeast of Clarence Island. These sites are situated along the boundary of the future Cabo Froward National Park, currently designated as a Protected National Asset (Bien Nacional Protegido, BNP).
General Environmental Characteristics
The region exhibits a precipitation gradient from southwest to northeast. Rocky bottoms extend beyond 25 meters in depth. The area is influenced by water masses from the Cape Horn Current entering from the South Pacific Ocean, with a lesser influence from Atlantic waters. Freshwater input originates from precipitation, coastal river discharge, and glacial meltwater.
| Coordenadas límite | Latitud Mínima Longitud Mínima [-90, -180], Latitud Máxima Longitud Máxima [90, 180] |
|---|
Cobertura taxonómica
No hay descripción disponible
| Reino | Reino, Animalia |
|---|---|
| Filo | Arthropoda, Annelida, Brachiopoda, Chordata, Filo, Echinodermata, Mollusca, Porifera, Bryozoa, Cnidaria |
| Class | Holothuroidea, Hydrozoa, Stenolaemata, Polychaeta, Camarodonta, Bivalvia, Ascidiacea, Anthozoa, Rhynchonellata, Maxillopoda, Gastropoda, Demospongiae, Clase, -, Gymnolaemata, Calcarea, Echinoidea, Polyplacophora, Ophiuroidea, Malacostraca, Asteroidea |
| Orden | Nudibranchia, Canalipalpata, Clionaida, Pectinida, Poecilosclerida?, Decapoda, Vetigastropoda, Aplousobranchia, Temnopleuridae, Dendrochirotida, Chitonida, Tetractinellida, Patellogastropoda, Valvatida, Cheilostomatida, Lepetellida , Terebratulida, Stolidobranchia, Orden, -, Anthoathecata, Cyclostomatida, Trochida , Suberitida, Mytilida, Neogastropoda, Forcipulatida, Leucosolenida, Poecilosclerida, Axinellida, Alcyonacea, Chaetopteridae, Sessilia, Arbacioida, Terebellida, Isopoda |
| Familia | Stylasteridae, Trichopeltariidae , Mytilidae, Clionaidae, chaetopteridae, -, Paguridae, Podospongiidae, Tedaniidae, Dictyonellidae, Chitonidae, Exochellidae, Latrunculiidae, Spiochaetopterus, Pyuridae, Sphaeromatidae, Ancorinidae, Pseudechinus, Crisinidae, Asteriidae, Suberitidae, Pectinidae, Volutidae, Lithodidae, Membraniporidae , Buccinidae, Familia, Magellaniidae, Primnoidae, Crellidae, Cellariidae, Calliostomatidae, Holozoidae, Balanidae, Nacellidae, Styelidae, Axinellidae, Psolidae, Campylonotidae, Amphoriscidae, Flabellinidae, Arbaciidae, Crangonidae, Solasteridae, Didemnidae, Biemnidae, Alcyoniidae, Hymenosomatidae, Fissurellinae , Terebellidae, Microcionidae, Munididae, Tegulidae , Polyclinidae, Muricidae |
Cobertura temporal
| Fecha Inicial / Fecha Final | 2021-07-07 / 2021-07-15 |
|---|
Métodos de muestreo
This study investigates the distribution patterns of subtidal benthic communities in the Strait of Magellan. Conducted during the austral winter of 2021, the field expedition surveyed five locations using scuba diving and photographic records along vertical transects (from 5 to 20 m depth). The main objective was to examine spatial scales—vertical (depth gradient) versus horizontal (differences among locations)—that explain community variation. Three replicates were obtained per depth level using 0.25 m² quadrats, identifying megabenthic organisms (<2 cm) to the lowest possible taxonomic level. The abundance of individual species was recorded, and colonial invertebrates were noted as presence/absence. This study provides relevant information on subtidal biodiversity in rocky habitats of southern Chile.
| Área de Estudio | The study was conducted in the interior of the Comau Fjord, Cahuelmó Fjord, and Lilihuapi Island, located in the southern region of Chile. |
|---|
Descripción de la metodología paso a paso:
-
Fieldwork was conducted using scuba diving along vertical transects at five locations, with images collected using a Nikon D500 digital camera equipped with a Tokina 10–17 mm fisheye lens. The camera was housed in an ISOTTA underwater casing and paired with dual INON Z-330 strobes to ensure optimal lighting. Photographic quadrats of 0.25 m² (50 × 50 cm) were used to document the megabenthic assemblages at depths between 5 and 20 meters. Image analysis and species identification were conducted using standard taxonomic literature and image review. Data processing and statistical analyses were performed using R (R Core Team, 2024), including both univariate and multivariate methods. QGIS was used for spatial visualization and mapping.
Metadatos adicionales
| Agradecimientos | This work was made possible thanks to Rewilding Chile Foundation, a Chilean non-profit organization financially supported by a broad philanthropic network. |
|---|---|
| Introducción | The Strait of Magellan, located in the sub-Antarctic Magellanic region of southern Chile, is a dynamic and ecologically rich area shaped by glacial history, oceanographic processes, and complex coastal geomorphology. Rocky subtidal habitats in this region act as biodiversity hotspots, supporting a high degree of endemism and playing key ecological and socioeconomic roles. Understanding the vertical and horizontal distribution patterns of benthic communities is essential to assess how abiotic and biotic factors influence their structure. This study aims to characterize subtidal benthic assemblages across five locations in the Strait of Magellan during the austral winter, focusing on whether community variation is primarily driven by depth (vertical scale) or by differences among sites (horizontal scale). |
| Propósito | This study investigates the distribution patterns of subtidal benthic communities in the Strait of Magellan. Conducted during the austral winter of 2021, the field expedition surveyed five locations through scuba diving and photographic records along vertical transects (from 5 to 20 m depth). The main objective was to examine spatial scales—vertical (depth gradient) versus horizontal (differences among locations)—that explain community variation. |
| Identificadores alternativos | https://gbif-chile.mma.gob.cl/ipt/resource?r=bentofauna_submareal_rewilding_estrecho_magallanes |