Data

Effects of introduced sessile invertebrates: removal experiments.

Australian Ocean Data Network
Barr, Lissa
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/a44bf690-bfe5-11dc-8c42-00188b4c0af8&rft.title=Effects of introduced sessile invertebrates: removal experiments.&rft.identifier=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/a44bf690-bfe5-11dc-8c42-00188b4c0af8&rft.description=Three removal experiments were conducted to test the effects of the introduced species, Bugula neritina, Ascidiella aspersa and Botryllus schlosseri on sessile invertebrate assemblages. Each experiment was run for approximately 2 months between 28th November 2004 and 13th February 2004. These experiments involved removing the introduced species from plates and then comparing these assemblages to those on disturbed control and control plates, where the introduced species had not been removed. The introduced species were removed by scraping them and surrounding species from the surface in 1/8 or 1/4 cm2 areas or by peeling individuals off with forceps. All individuals on the plates were counted and identified at the completion of the experiments.Maintenance and Update Frequency: notPlannedStatement: Removal of the introduced species not only removed the organisms but also increased space availability. To control for space creation and the damage to species on the perimeter of the scraped areas, random areas of space from disturbed control assemblages were removed (DC). The number of introduced species removed on the removal plates (R) varied between plates so each R was matched to a DC. The amount of space cleared on each DC was equal to its matched R but the introduced species on DC were not removed. Control plates (C) were left undisturbed. There were 3 or 4 replicates per treatment.&rft.creator=Barr, Lissa &rft.date=2004&rft.coverage=westlimit=144.909; southlimit=-37.861; eastlimit=144.909; northlimit=-37.861&rft.coverage=westlimit=144.909; southlimit=-37.861; eastlimit=144.909; northlimit=-37.861&rft.coverage=uplimit=3; downlimit=2&rft.coverage=uplimit=3; downlimit=2&rft_rights=Contact author or point of contact for access to data.&rft_rights=This metadata may be downloaded for use in accordance with the Copyright Act 1968&rft_subject=biota&rft_subject=ENVIRONMENTAL IMPACTS&rft_subject=EARTH SCIENCE&rft_subject=HUMAN DIMENSIONS&rft_subject=COMMUNITY STRUCTURE&rft_subject=BIOSPHERE&rft_subject=ECOLOGICAL DYNAMICS&rft_subject=COMMUNITY DYNAMICS&rft_subject=SPECIES RECRUITMENT&rft_subject=Oceans | Marine Biology | Marine Invertebrates&rft_subject=Biosphere | Zoology | Invertebrates&rft_subject=BENTHIC HABITAT&rft_subject=AQUATIC ECOSYSTEMS&rft_subject=Workshops Jetty&rft_subject=Williamstown&rft_subject=Port Phillip Bay&rft_subject=Botryllus schlosseri&rft_subject=35 033006&rft_subject=Bugula neritina&rft_subject=20 331013&rft_subject=Bugula dentata&rft_subject=20 331002&rft.type=dataset&rft.language=English Access the data
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Brief description

Three removal experiments were conducted to test the effects of the introduced species, Bugula neritina, Ascidiella aspersa and Botryllus schlosseri on sessile invertebrate assemblages. Each experiment was run for approximately 2 months between 28th November 2004 and 13th February 2004. These experiments involved removing the introduced species from plates and then comparing these assemblages to those on disturbed control and control plates, where the introduced species had not been removed. The introduced species were removed by scraping them and surrounding species from the surface in 1/8 or 1/4 cm2 areas or by peeling individuals off with forceps. All individuals on the plates were counted and identified at the completion of the experiments.

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Maintenance and Update Frequency: notPlanned
Statement: Removal of the introduced species not only removed the organisms but also increased space availability. To control for space creation and the damage to species on the perimeter of the scraped areas, random areas of space from disturbed control assemblages were removed (DC). The number of introduced species removed on the removal plates (R) varied between plates so each R was matched to a DC. The amount of space cleared on each DC was equal to its matched R but the introduced species on DC were not removed. Control plates (C) were left undisturbed. There were 3 or 4 replicates per treatment.

Notes

Credit
This thesis was carried out under the supervision of Dr Nathan Knott and Prof Mick Keough.

Issued: 30 04 2004

Data time period: 2003-11 to 2004-2

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144.909,-37.861

144.909,-37.861

text: westlimit=144.909; southlimit=-37.861; eastlimit=144.909; northlimit=-37.861

text: uplimit=3; downlimit=2

Subjects
20 331002 | 20 331013 | 35 033006 | AQUATIC ECOSYSTEMS | Benthic Habitat | BIOSPHERE | Biosphere | Zoology | Invertebrates | Botryllus schlosseri | Bugula dentata | Bugula neritina | COMMUNITY DYNAMICS | Community Structure | EARTH SCIENCE | ECOLOGICAL DYNAMICS | Environmental Impacts | HUMAN DIMENSIONS | Oceans | Marine Biology | Marine Invertebrates | Port Phillip Bay | Species Recruitment | Williamstown | Workshops Jetty | biota |

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global : 2122e200-bf2d-11dc-8728-00188b4c0af8

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  • global : a44bf690-bfe5-11dc-8c42-00188b4c0af8
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