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Earth Science | Biosphere | Aquatic Ecosystems | Lakes

7 record(s)

 

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    This dataset consists of sea mullet tagging log sheets from 1954 to 1956 and tag recovery log sheets from 1954 to 1958. The data was collected from Lake Macquarie.

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    This dataset contains the results from quadrat surveys in the Marmion Lagoon, Perth, Western Australia. Approximately monthly surveys were conducted between October 1993 and October 1994 to determine the biomass and distribution of filter feeders in relation to seagrass distributions.

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    This dataset contains seagrass distribution and density data from Marmion Lagoon, Perth, Western Australia. Every 6 months from 1979 until January 1998, two transects a north south and an east west (370 m and 330 m long) in 4 m of water were conducted. Any species or density changes along the transects were recorded.

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    This dataset contains nutrient and chlorophyll a data from Marmion Lagoon, Perth, Western Australia. Samples were obtained between March 1994 and March 1995.

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    Dataset contains monitoring data from field surveys (mainly from crab-traps) on the distribution of European green crab (Carcinus maenas) in Tasmanian coastal waters, from January 1996 onwards. Data are also collected for bycatch of native crab species (including common shore crab Paragrapsus gaimardii, rough rock crab Nectocarcinus integrifrons, and ocean surf crab Ovalipes australiensis). The majority of data comes from keysites on the north-east (Georges Bay, Falmouth) and south-east (Little Swanport, Blackman Bay, Norfolk Bay) coast which are surveyed each late Spring to early Autumn (initially fortnightly, later monthly, most recently bimonthly). Data contains details of catch location, date, crab species, crab size, abundance, sex, gonad condition, limb loss, carapace colour. These data are collected as part of CSIRO's studies on the impacts and demographics of introduced marine species in Australian waters.

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    Dataset contains monitoring data from field surveys (mainly from crab-traps) on the distribution of European green crab (Carcinus maenas) in mainland Australian coastal waters, from January 1997 onwards. Data are also collected for bycatch of native crab species (including common shore crab Paragrapsus gaimardii, rough rock crab Nectocarcinus integrifrons, and ocean surf crab Ovalipes australiensis). The majority of data comes from one-off trappings in St Vincent Gulf, South Australia, and a suite of sites from SE Victoria (this latter area has been surveyed repeatedly). Some sites were in southern NSW. Data contains details of catch location, date, crab species, crab size, abundance, sex, gonad condition, limb loss, carapace colour. These data were collected as part of CSIRO's studies on the impacts and demographics of introduced marine species in Australian waters and for comparison with green crab distributions in Tasmania.

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    Dataset contains data from both laboratory and field experiments on the impacts of European green crab (Carcinus maenas) in Tasmanian coastal waters from January 1996 onwards. Impacts of primary interest are those on benthic infauna and native crabs. Most of the experiments were done inside the green crab's range in NE Tasmania (including Henderson Lagoon and Georges Bay), but also at some control sites in SE Tasmania (e.g. Norfolk Bay, Upper Pitwater). Studies included both inclusion and exclusion caging experiments, in which green crabs were included and excluded from caged areas, respectively, and the impacts over time on other fauna inside the cages determined. Infaunal surveys were done at several sites both inside and outside the crab's range in Tasmania, with particular emphasis on bivalves and gastropods. Infaunal surveys at several SE Victorian sites were later included for comparison. Studies were done in collaboration with scientists from the Smithsonian Environmental Reseach Centre in Maryland, USA, and Honours students from Department of Zoology, University of Tasmania. Subsets of the data are held at Smithsonian Environmental Research Centre, Maryland, and at Dept. Zoology, University of Tasmania.