Data

The population dynamics of the gastropod Lepsiella vinosa on the West Head rocky shore in Victoria

Australian Ocean Data Network
Synnot, Russell
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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/05f4f7f0-f49f-11dc-9f74-00188b4c0af8&rft.title=The population dynamics of the gastropod Lepsiella vinosa on the West Head rocky shore in Victoria&rft.identifier=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/05f4f7f0-f49f-11dc-9f74-00188b4c0af8&rft.description=This study surveyed the size distribution of Lepsiella vinosa at 3 sites on the rocky shore at West Head, Victoria. Monthly or bi-monthly searchers were conducted from June 1975 to August 1978 during spring low tide. Every individual L.vinosa found at the 3 sites was measured to the nearest 0.01cm with vernier calipers. To determine recruitment of L.vinosa to the shore, individuals were arbitrarily designated as juveniles (< 0.8 cm) or adult (> 0.8 cm). The type of microhabitat where each individual was found was recorded at Sites 1 and 2 for the searchers conducted in spring (November 1977), summer (January 1978), autumn (April 1978), and winter (August 1978). There were larger individuals of L.vinosa at higher intertidal levels (Site 1) compared to the mid- and lower sites (Sites 2 and 3). The recruitment of juveniles could not be determined from the size frequency distribution at any of the sites. There was more L.vinosa than expected in the rock pool habitats compared to the bare rock in all seasons except for winter at Site 2. There was high variability in abundance in the Lichinia habitat between all seasons and sites.Statement: Site 3 was at the lowest tidal level in the littorinid zone, Site 2 was in the mid-littoral zone and Site 1 was in the rock rubble in the high intertidal. There were 3 categories of microhabitat used in the surveys; bare rock, rock pools or individuals on Lichinia confinis (Lichinia). Photographs of 6 random quadrats were taken in Site 1 and 2 during the searchers to estimate the proportion of the 3 types of microhabitat. The proportions were used to calculate expected values to test the null hypothesis that L.vinosa shows no preference for habitat type in any season.&rft.creator=Synnot, Russell &rft.date=1980&rft.coverage=westlimit=145.03; southlimit=-38.48; eastlimit=145.03; northlimit=-38.48&rft.coverage=westlimit=145.03; southlimit=-38.48; eastlimit=145.03; northlimit=-38.48&rft_rights=Contact the principal investigator for more information about the data&rft_rights=This metadata may be downloaded for the use in accordance with the Copyright Act 1968&rft_subject=biota&rft_subject=Oceans | Marine Biology | Marine Invertebrates | gastropoda | thaid&rft_subject=Biosphere | Zoology | Invertebrates&rft_subject=Oceans | Marine Biology | Marine Invertebrates&rft_subject=POPULATION DYNAMICS&rft_subject=EARTH SCIENCE&rft_subject=BIOSPHERE&rft_subject=ECOLOGICAL DYNAMICS&rft_subject=SPECIES/POPULATION INTERACTIONS&rft_subject=Biosphere | Ecological Dynamics | Life History | mortality&rft_subject=Biosphere | Ecological Dynamics | Life History | reproduction&rft_subject=Biosphere | Ecological Dynamics | Predation&rft_subject=Biosphere | Aquatic Habitat | Benthic Habitat | rocky shore&rft_subject=West Head&rft_subject=Western Port Bay&rft_subject=Lepsiella vinosa&rft_subject=24 200165&rft.type=dataset&rft.language=English Access the data
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Brief description

This study surveyed the size distribution of Lepsiella vinosa at 3 sites on the rocky shore at West Head, Victoria. Monthly or bi-monthly searchers were conducted from June 1975 to August 1978 during spring low tide. Every individual L.vinosa found at the 3 sites was measured to the nearest 0.01cm with vernier calipers. To determine recruitment of L.vinosa to the shore, individuals were arbitrarily designated as juveniles (< 0.8 cm) or adult (> 0.8 cm). The type of microhabitat where each individual was found was recorded at Sites 1 and 2 for the searchers conducted in spring (November 1977), summer (January 1978), autumn (April 1978), and winter (August 1978). There were larger individuals of L.vinosa at higher intertidal levels (Site 1) compared to the mid- and lower sites (Sites 2 and 3). The recruitment of juveniles could not be determined from the size frequency distribution at any of the sites. There was more L.vinosa than expected in the rock pool habitats compared to the bare rock in all seasons except for winter at Site 2. There was high variability in abundance in the Lichinia habitat between all seasons and sites.

Lineage

Statement: Site 3 was at the lowest tidal level in the littorinid zone, Site 2 was in the mid-littoral zone and Site 1 was in the rock rubble in the high intertidal. There were 3 categories of microhabitat used in the surveys; bare rock, rock pools or individuals on Lichinia confinis (Lichinia). Photographs of 6 random quadrats were taken in Site 1 and 2 during the searchers to estimate the proportion of the 3 types of microhabitat. The proportions were used to calculate expected values to test the null hypothesis that L.vinosa shows no preference for habitat type in any season.

Notes

Credit
Dr. Murray Littlejohn

Issued: 18 02 1980

Data time period: 1975-06 to 1978-12

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145.03,-38.48

145.03,-38.48

text: westlimit=145.03; southlimit=-38.48; eastlimit=145.03; northlimit=-38.48

Subjects
24 200165 | BIOSPHERE | Biosphere | Aquatic Habitat | Benthic Habitat | rocky shore | Biosphere | Ecological Dynamics | Life History | mortality | Biosphere | Ecological Dynamics | Life History | reproduction | Biosphere | Ecological Dynamics | Predation | Biosphere | Zoology | Invertebrates | EARTH SCIENCE | ECOLOGICAL DYNAMICS | Lepsiella vinosa | Oceans | Marine Biology | Marine Invertebrates | Oceans | Marine Biology | Marine Invertebrates | gastropoda | thaid | Population Dynamics | SPECIES/POPULATION INTERACTIONS | West Head | Western Port Bay | biota |

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