Keyword
Earth Science | Biosphere | Ecological Dynamics | Ecosystem Functions | Decomposition
3 record(s)
Type of resources
Topics
Keywords
Contact for the resource
Provided by
Formats
Update frequencies
Status
draft
-
Data were collected on stable isotope ratios and decomposition of mangrove and seagrass leaves set 'in situ' among the mangrove forest and seagrass beds, respectively, in the Weipa region in 1993/94. The leaf material were set in porous bags intertidally and subtidally. Two experiments, one beginning in June 1993 (dry season), and one beginning in December 1993 (wet season) were conducted. Successive bags were harvested after about 4-8 days, then they were harvested every two months for 10 months and four months (respectively). Data were also collected on litterfall from mangrove trees in three mangrove communities; Rhizophora, Avicennia and Ceriops. Litter traps were set at two sites in each community in March 1993 and harvested every two months for 10 months. These data may only have been stored in EXCEL files and may be lost, though a paper was published on the results of the experiments (see Conacher et al, 1996).
-
This record describes sediment trap data obtained with the SAZ16 Sediment Trap, collected on the Marine National Facility RV Investigator voyage IN2015_V01, departing Hobart on the 21st March and returning to Hobart on the 29th of March, 2015. The SAZ sediment trap mooring focuses on quantifying the transfer of carbon and other nutrients to the ocean interior by sinking particles, and collecting samples to investigate their ecological controls. SAZ16 Sediment Traps were recovered and data downloaded from sediment trap controller computers.
-
Ecosystem process measurements were made on sediment sampled with a box core and water sampled from CTD profiles. For sediments, measurements were of wet/dry weight ratio, total organic carbon, chlorophyll and stable isotopes, nitrogen cycling (nitrogen fixation and denitirification) and oxygen demand. For water samples, measurements were of total suspended solids, chlorophyll and stable isotopes. The survey design was a natural experiment (i.e. control-impact, but not before-after) to test the long-term, broadscale effects of prawn fishing on non-target species and habitats. Deployments were stratified by fishing intensity (three strata) and day/night. The survey was repeated in three regions: (a) north of Groote Eylandt, (b) north-east of the Vanderlins, and (c) north of Mornington Island.