Brief description
The abundance and size of individuals of 10 gastropod species were measured in rocky intertidal reefs in 10 Marine Protected Areas (Marine National Parks and Marine Sanctuaries) in Victoria, Australia. Similar surveys were conducted at 8 comparable sites outside these parks. The study species consist of broadcast spawners (Cellana tramoserica, Turbo undulatus, Austrocochlea constricta, Patelloida alticostata) and egg laying species (Nerita atramentosa, Bembicium nanum, Cominella lineolata, Dicathais orbita, Lepsiella vinosa, Siphonaria diemenensis) with different larval dispersal potentials.Lineage
Maintenance and Update Frequency: notPlanned
Statement: Vernier calipers, 50 x 50cm quadrats, 1 x 1m quadrats.
Statement: Marine Protected Area sites (M) were Port Phillip Heads Marine National Park, Point Nepean National Park, Mornington Peninsula National Park, Jawbone Marine Sanctuary, Point Cooke Marine Sanctuary, Ricketts Point Marine Sanctuary, Point Addis Marine National Park, Eagle Rock Marine Sanctuary, Point Danger Marine Sanctuary and Barwon Bluff Marine Sanctuary. Sites that were not located in Marine Protected Areas (O) were Williamstown, Altona, Brighton (Green Point), Mornington (Fishermans Beach), Mount Martha, Winkipop, Sandy Gully and Point Impossible
Population censuses for all sites were undertaken at the commencement of the study in 1993, except for the coastal populations at Point Addis, Eagle Rock, Point Danger, Winkipop, Sandy Gully and Point Impossible, which were censured in 2005. 15 replicates were taken in the upper littoral and the mid-low littoral zones. Each replicate was a 50 x 50cm quadrat or 1 x 1m quadrats for the less abundant species (e.g. Turbo undulatus), or an individual rock, where the shore consisted of boulders and large rocks. The number of individuals of each species was counted in each replicate. The size (mm) of 100 individuals of each species was measured within each quadrat or rock. If there was less than 100 individuals of any particular species then random individuals found outside the quadrat or rocks were measured to make a sample size of 100. Percent cover of algae ('browns', 'red', 'coralline', Ulva sp. and 'other green'), bare rock, sand, water or other features such as mussels or barnacles was estimated in each replicate.
Notes
CreditFunding from the University of Melbourne and Parks Victoria
Credit
Field assistance from Cameron Miller, Vivian Wallace, Jeff Ross, Clare Bennett, Liz Morris, Emma Bathgate, Gwillim Roberts, Justine Wallace and Allyson O'Brien
Field assistance from Cameron Miller, Vivian Wallace, Jeff Ross, Clare Bennett, Liz Morris, Emma Bathgate, Gwillim Roberts, Justine Wallace and Allyson O'Brien
Purpose
This is baseline population data used to determine how populations of gastropod species vary between sites, and to examine the extent to which existing marine protected areas may act as larval sources or sinks, and thus function from a conservation perspective.
This is baseline population data used to determine how populations of gastropod species vary between sites, and to examine the extent to which existing marine protected areas may act as larval sources or sinks, and thus function from a conservation perspective.
Created: 09 10 2007
Data time period: 1993 to 2005
text: westlimit=144.10; southlimit=-38.47; eastlimit=145.03; northlimit=-37.86
Subjects
24 002002 |
24 010002 |
24 045004 |
24 046007 |
24 057001 |
24 095010 |
24 200008 |
24 200165 |
24 202002 |
24 488001 |
ANIMALS/INVERTEBRATES |
AQUATIC ECOSYSTEMS |
Austrocochlea constricta |
Benthic Habitat |
BIOLOGICAL CLASSIFICATION |
BIOSPHERE |
Bembicium nanum |
Biosphere | Ecological Dynamics | Life History |
Civil Disturbance |
Cellana tramoserica |
Cominella lineolata |
EARTH SCIENCE |
ECOLOGICAL DYNAMICS |
ENVIRONMENTAL IMPACTS |
HUMAN DIMENSIONS |
Lepsiella vinosa |
Mollusks |
Nerita atramentosa |
Oceans | Marine Biology | Marine Invertebrates |
Population Dynamics |
Patelloida alticostata |
SPECIES/POPULATION INTERACTIONS |
Siphonaria diemenensis |
Thais (Dicathais) orbita |
Turbo undulatus |
biota |
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Identifiers
- global : 6e973b10-7623-11dc-8bf5-00188b4c0af8