Sightings of marine mammals carried out during oceanographic surveys in the Argentine continental shelf

Ocorrência
Versão mais recente published by ArOBIS Centro Nacional Patagónico on mar. 10, 2017 ArOBIS Centro Nacional Patagónico
Publication date:
10 de março de 2017
Licença:
CC0 1.0

Baixe a última versão do recurso de dados, como um Darwin Core Archive (DwC-A) ou recurso de metadados, como EML ou RTF:

Dados como um arquivo DwC-A download 389 registros em English (24 KB) - Frequência de atualização: irregular
Metadados como um arquivo EML download em English (26 KB)
Metadados como um arquivo RTF download em English (16 KB)

Descrição

This dataset comprises 389 records of marine mammals collected during nine vessel surveys conducted during 2009-2015, along the Argentine continental shelf. The surveys, carried out between November and April, were designed as line-transect sampling methodology with data collection through visual methods. The database comprises 7 families, 14 genus and 17 marine mammals species were sighted, including records of dolphins, whales and pinnipeds.

Registros de Dados

Os dados deste recurso de ocorrência foram publicados como um Darwin Core Archive (DwC-A), que é o formato padronizado para compartilhamento de dados de biodiversidade como um conjunto de uma ou mais tabelas de dados. A tabela de dados do núcleo contém 389 registros.

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Versões

A tabela abaixo mostra apenas versões de recursos que são publicamente acessíveis.

Como citar

Pesquisadores deveriam citar esta obra da seguinte maneira:

Retana M V, Lewis M N, Dellabianca N A, Raya Rey A, Scioscia G, Torres M (2016): Sightings of marine mammals carried out during oceanographic surveys in the Argentine continental shelf. v1.2. ArOBIS Centro Nacional Patagónico. Dataset/Occurrence. http://arobis.cenpat-conicet.gob.ar:8081/resource?r=arobis-cenpat-cadic-mammalobs&v=1.2

Direitos

Pesquisadores devem respeitar a seguinte declaração de direitos:

O editor e o detentor dos direitos deste trabalho é ArOBIS Centro Nacional Patagónico. To the extent possible under law, the publisher has waived all rights to these data and has dedicated them to the Public Domain (CC0 1.0). Users may copy, modify, distribute and use the work, including for commercial purposes, without restriction.

GBIF Registration

Este recurso foi registrado no GBIF e atribuído ao seguinte GBIF UUID: 79e731ed-fe9b-4d50-93f7-ab1f01636385.  ArOBIS Centro Nacional Patagónico publica este recurso, e está registrado no GBIF como um publicador de dados aprovado por Ocean Biodiversity Information System.

Palavras-chave

Occurrence; Sightings; Vessels; Marine Mammals; Pinnipeds; Whales; Dolphins; Surveys; Census; Southwest Atlantic Ocean; Argentine Continental Shelf; Argentine Sea; Observation

Contatos

María Valeria Retana
  • Provedor Dos Metadados ●
  • Originador
  • Postdoctoral fellow
CESIMAR-CENPAT-CONICET
  • Bv. Almirante Brown 2915
U9120ACD Puerto Madryn
Chubut
AR
  • +54 280 4883184 (int. 1242)
Mirtha Noemí Lewis
  • Originador
  • Researcher
CESIMAR-CENPAT-CONICET
  • Bv. Almirante Brown 2915
U9120ACD Puerto Madryn
Chubut
AR
  • +54 280 4883184 (int. 1242)
Natalia Andrea Dellabianca
  • Originador
  • Researcher
CADIC-CONICET
  • Bernardo Houssay 200
V9410CAB Ushuaia
Tierra del Fuego
AR
  • +54 2901 422310
Andrea Raya Rey
  • Originador
  • Researcher
CADIC-CONICET
  • Bernardo Houssay 200
V9410CAB Ushuaia
Tierra del Fuego
AR
  • +54 2901 422310
Gabriela Scioscia
  • Originador
  • Postdoctoral fellow
CADIC-CONICET
  • Bernardo Houssay 200
V9410CAB Ushuaia
Tierra del Fuego
AR
  • +54 2901 422310
Monica Torres
  • Originador
  • Professional supporting to research
CADIC-CONICET
  • Bernardo Houssay 200
V9410CAB Ushuaia
Tierra del Fuego
AR
  • +542901422310
María Rosa Marin
  • Provedor Dos Metadados ●
  • Programador ●
  • Ponto De Contato
  • Professional supporting to research
CESIMAR-CENPAT-CONICET
  • Bv. Almirante Brown 2915
U9120ACD Puerto Madryn
Chubut
AR
  • +54 280 4883184 (int. 1202)
Renato Mazzanti
  • Programador
  • Coordinator of the Information Management Unit
CENPAT-CONICET
  • Bv. Almirante Brown 2915
U9120ACD Puerto Madryn
Chubut
AR
  • +54 280 4883184 (int. 1260)

Cobertura Geográfica

Argentine continental shelf (Southwest Atlantic Ocean)

Coordenadas delimitadoras Sul Oeste [-58, -70], Norte Leste [-37, -55]

Cobertura Taxonômica

All individuals were identified to species level, except for some individuals that been identified until family and genus level. The dataset comprises 7 families, 14 genus and 18 species.

Família Balaenopteridae (Rorquals), Delphinidae (Dolphins)
Gênero Balaenoptera (Baleen whales)
Espécie Arctocephalus australis (South American fur seal), Balaenoptera bonaerensis (Antarctic minke whale), Balaenoptera borealis (Sei whale), Cephalorhynchus commersonii (Commerson's dolphin), Delphinus delphis (Short-Beaked common dolphin), Eubalaena australis (Southern right whale), Globicephala melas (Long-finned pilot whale), Lagenorhynchus australis (Peale's dolphin), Lagenorhynchus cruciger (Hourglass dolphin), Lagenorhynchus obscurus (Dusky dolphin), Megaptera novaeangliae (Humpback whale), Mirounga leonina (Southern elephant seal), Orcinus orca (Killer whale), Otaria flavescens (South American sea lion), Phocoena dioptrica (Spectacled Porpoise), Physeter macrocephalus (Sperm whale), Tursiops truncatus (Common bottlenose dolphin)

Cobertura Temporal

Data Inicial / Data final 2009-11-29 / 2009-12-16
Data Inicial / Data final 2012-02-13 / 2012-03-24
Data Inicial / Data final 2012-03-27 / 2012-04-14
Data Inicial / Data final 2013-01-25 / 2013-02-19
Data Inicial / Data final 2014-01-30 / 2014-02-16
Data Inicial / Data final 2014-02-12 / 2014-03-18
Data Inicial / Data final 2014-03-29 / 2014-04-04
Data Inicial / Data final 2014-11-04 / 2014-11-27
Data Inicial / Data final 2015-02-17 / 2015-02-23

Métodos de Amostragem

Data were collected using line transect sampling methodology (Buckland et al. 2001).

Área de Estudo The Argentine continental shelf extends between the coast of Argentina and the continental slope, with a surface estimated of 1,000,000 km2 and depths less than 100 m in most of its extension (Fig. X). The continental shelf is dominated by two marine currents: the Malvinas Current and Brazil currents. The Malvinas current is a cold and rich in nutrients current that flows north along the continental slope of Argentina up to 38◦ S. The Brazil current is a warm and poor in nutrients current that enters the Argentine Sea from the north, along the slope, and moves south to meet Malvinas current. The collision of these two currents, known as the Brazil/Malvinas Confluence, is a transition area whose location varies seasonally between 30 and 46º S.
Controle de Qualidade During the census, all the individuals were identified at the lowest possible taxonomic level (species or genus) using reference guides of marine mammals (Folkens et al. 2002, Shirihai & Jarrett 2002, Shirihai et al. 2006, Bastida & Rodriguez 2010, Jefferson et al. 2011). All the scientific names of marine mammals were validated by matching them against World Register of Marine Species database (WoRMS, http://www.marinespecies.org/). The latitude and longitude of sightings were plotted on a GIS software to detect the outliers, which were corrected following the course of the ship.

Descrição dos passos do método:

  1. In the Coriolis II mission, one observer, in the roof of the wheelhouse, recorded all the marine mammals in a range of 300 meters in the side of the boat with better visibility using 7x50 binoculars. A screen connected to pilot’s cabin, shown in real time: ship position, ship speed and direction, wind speed and direction, latitude, and longitude. The census was conducted continuously during daylight hours (7-21 hours) when the ship was sailing at a relatively constant velocity of 10 knots. Species, number of individuals, behavior, sea state, ship speed and direction, wind speed and direction were recorded, and each observation was automatically recorded the position (latitude and longitude), date and time of day. In the other censuses, the marine mammals sightings were recorded on a portable handheld computer with integrated GPS (Trimble Juno ST), using the free software CyberTracker (CyberTracker Software (Pty) Ltd Reg. no. 97/01908/07, http://www.cybertracker.co.za). Surveys were conducted daily during daylight hours (~ 12 hrs) at a mean vessel speed of 10 knots. During the surveys, two observers collected the data from both sides of the vessel, through naked eye scans supplemented by use of 7x50 binoculars with internal compass and reticle. A third observer assisted in the scans and recorded observations. Observers switched between the three positions at 2 hour intervals. Data recorded for each sighting included GPS position, date and time, sighting distance, sighting angle, species, group size and composition. Vessel speed, air temperature, wind speed and direction, Beaufort Sea State (BSS), cloud cover and visibility were recorded at the start of each day and updated whenever they changed.

Citações bibliográficas

  1. Buckland ST, Anderson DR, Burnham KP, Laake JL, Borchers DL & Thomas L (2001) Introduction to distance sampling: estimating abundance of biological populations. Oxford University Press, Oxford. 432pp ISBN 978-0-19-850927-8
  2. Bastida R & Rodríguez D (2010) Mamíferos Marinos de la Patagonia y Antártida. Vazquez Mazzini Editores, Buenos Aires. 207pp. ISBN 978-9879-132-203
  3. Jefferson TA, Webber MA & Pitman RL (2011) Marine mammals of the world: a comprehensive guide to their identification. Academic Press.
  4. Shirihai H & Jarrett B (2002) The complete guide to Antarctic wildlife: birds and marine mammals of the Antarctic continent and the Southern Ocean. G. M. Kirwan (Ed.). Princeton University Press.
  5. Folkens P, Reeves A, et al. (2002) Guide to marine mammals of the world. National Audubon Society. 527 pp.
  6. Shirihai H, Jarrett B, & Kirwan GM (2006) Whales, dolphins, and other marine mammals of the world. Princeton University Press.

Metadados Adicionais

marine, harvested by iOBIS

Identificadores alternativos 79e731ed-fe9b-4d50-93f7-ab1f01636385
http://arobis.cenpat-conicet.gob.ar:8081/resource?r=arobis-cenpat-cadic-mammalobs