The Ecology and Biogeography of Heard Island Marine Benthos 1987/88

Occurrence
Dernière version Publié par Australian Antarctic Data Centre le oct. 16, 2018 Australian Antarctic Data Centre
Date de publication:
16 octobre 2018
Licence:
CC-BY 4.0

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Description

Collections of 23 macroinvertebrate taxa associated with Durvillaea antarctica holdfasts and 58 invertebrate taxa associated with artificial substrata collectors are described from shallow-water and intertidal habitats at Heard Island. The fauna sampled possessed strong biogeographic affinities with the Kerguelen Island fauna and, to a slightly lesser extent, the fauna recorded at Macquarie Island. The fauna possessed negligible affinity with the Antarctic. Experiments involving the offshore tethering of Durvillaea antarctica holdfasts indicated epifaunal invertebrates rapidly abandoned detached holdfasts, but that the few species surviving after one day can probably survive long periods adrift. The fields in this dataset are: Taxon (species) Distribution Locality Date ControlQuality: A preliminary trial indicated that whole plants attached to lines created too much drag for anchors, hence holdfasts were separated from fronds and tethered at the sea surface to anchored buoys. This process was undertaken on 20 November 1987, with four of the tethered holdfasts collected for faunal analysis the next day. Two holdfasts were lost to wave action during the study, with the remaining two holdfasts collected after 93 days afloat. Holdfasts (4 replicates) were also collected as faunal controls from the shore at the start (20 November 1987) and end of the experiment (21 February 1988). In order to assess whether recruitment was occurring on tethered holdfasts, four replicate holdfasts were defaunated by submersion in freshwater for 10 minutes at the start of the experiment before offshore tethering (see Edgar 1992). Two of these recruitment control holdfasts were lost through wave action and two collected at the end of the experiment. On collection, all holdfasts were carefully placed into plastic bags and formalin added. Animals were later separated from holdfasts in the laboratory by pouring the washed contents of the bags through a 0.5 mm sieve after the holdfast had been broken apart, and animals retained by the sieve counted under a binocular microscope using the same methods as for artificial algal habitats. Note from the AADC, 2018-08-02: The original datasheet was reformatted to fit OBIS/GBFI/IPT Biodiversity.AQ standards. The new datasheet "MacrofaunaDurvillaeaHoldfast87_88.csv" provides the data of fauna associated with holdfast of Durvillaea antarctica from Heard Island, from artificial algal habitats. This new data sheet contains datasetID, occurrenceID, continentCode, island, locationID, decimal latitude, decimal longitude, event date, organismQuantity, organismQunatityType, basisOfRecord, occurrenceStatus, associatedTaxa and associatedReference. It's also provides species identification to the lowest taxonomical rank that could be determined. Species names were matched in WoRMS (World Register of Marine Species).

Enregistrements de données

Les données de cette ressource occurrence ont été publiées sous forme dune Archive Darwin Core (Darwin Core Archive ou DwC-A), le format standard pour partager des données de biodiversité en tant quensemble dun ou plusieurs tableurs de données. Le tableur de données du cœur de standard (core) contient 119 enregistrements.

Cet IPT archive les données et sert donc de dépôt de données. Les données et métadonnées de la ressource sont disponibles pour téléchargement dans la section téléchargements. Le tableau des versions liste les autres versions de chaque ressource rendues disponibles de façon publique et permet de tracer les modifications apportées à la ressource au fil du temps.

Versions

Le tableau ci-dessous naffiche que les versions publiées de la ressource accessibles publiquement.

Comment citer

Les chercheurs doivent citer cette ressource comme suit:

Edgar, G. (2000, updated 2018) The Ecology and Biogeography of Heard Island Marine Benthos

Droits

Les chercheurs doivent respecter la déclaration de droits suivante:

L’éditeur et détenteur des droits de cette ressource est Australian Antarctic Data Centre. Ce travail est sous licence Creative Commons Attribution (CC-BY) 4.0.

Enregistrement GBIF

Cette ressource a été enregistrée sur le portail GBIF, et possède lUUID GBIF suivante : dc9b4f81-f75e-44e8-bb19-845e665ccb81.  Australian Antarctic Data Centre publie cette ressource, et est enregistré dans le GBIF comme éditeur de données avec lapprobation du Atlas of Living Australia.

Mots-clé

Occurrence

Données externes

Les données de la ressource sont disponibles dans dautres formats

Point of truth metadata record https://data.aad.gov.au/metadata/records/ASAC_254 ASCII DIF 9.9

Contacts

GRAHAM EDGAR
  • Personne De Contact
  • INVESTIGATOR
  • Institute for Marine and Antarctic Studies Private Bag 49
7001 Hobart
Tasmania
AU
GRAHAM EDGAR
  • Personne De Contact
  • DIF AUTHOR
  • Institute for Marine and Antarctic Studies Private Bag 49
7001 Hobart
Tasmania
AU
GRAHAM EDGAR
  • Personne De Contact
  • TECHNICAL CONTACT
  • Institute for Marine and Antarctic Studies Private Bag 49
7001 Hobart
Tasmania
AU
DATA OFFICER AADC
  • Distributeur
  • DATA CENTER CONTACT
Australian Antarctic Data Centre, Australia
  • Australian Antarctic Division 203 Channel Highway
7050 Kingston
Tasmania
AU

Couverture géographique

OCEAN > SOUTHERN OCEAN GEOGRAPHIC REGION > POLAR OCEAN > SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS OCEAN > SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS > Atlas Cove OCEAN > SOUTHERN OCEAN > HEARD AND MCDONALD ISLANDS > Corinthian Bay

Enveloppe géographique Sud Ouest [-53,21, 73,24], Nord Est [-52,95, 73,9]

Couverture taxonomique

23 specie of macroinvertebrate, taxa associated with Durvillea antarctica, were identified

Phylum Cnidaria, Nematoda, Platyhelminthes, Nemertea, Arthropoda, Echinodermata, Chordata
Class Polychaeta, Gastropoda, Bivalvia

Couverture temporelle

Date de début / Date de fin 1987-11-20 / 1988-02-21

Citations bibliographiques

  1. Edgar, G.J. and H.R. Burton (2000) The biogeography of shallow-water macrofauna at Heard Island. Papers and Proceedings of the Royal Society of Tasmania. 133(2), 23-26

Métadonnées additionnelles

Identifiants alternatifs dc9b4f81-f75e-44e8-bb19-845e665ccb81
https://data.aad.gov.au/ipt/resource?r=durvillaea_fauna