AndreaBozzo/ceres-open-data-index huggingface dataset:
Population dynamics of the intertidal limpet, Siphonaria diemenensis at Griffith Point, Victoria.

A combination of surveys and experiments were used to determine the size distribution, recruitment, mortality and growth rates of Siphonaria diemenensis in 2 zones on the rocky shore at Griffith Point, San Remo, Victoria. One zone was in the high intertidal (Zone 2) and one was in the low intertidal area on the shore. There were 3 sites in Zone 1 and 2 sites in Zone 2 (see parent record for more details). 

A size frequency distribution was constructed for each site from surveys that recorded the size of all individuals every 2 months from October 1979 to December 1981. In addition to the sites in Zone 1 there were 12 permanent quadrats (50 x 50cm) which were surveyed in the same manner from December 1980 to December 1981. The sizes of recruits were similar in both Zones but the sizes of adults were significantly greater in Zone 2. In both years, the maximum density of recruits in Zone 1 was greater than in Zone 2. The mortality rate of adult limpets in Zone 2 was lower compared to limpets in Zone 1.

The growth rates (mm per month) of marked individuals were calculated for 3 time intervals; January-March, March-May and May-late July (Zone 2) and Mary-early August (Zone 1) in 1981. Limpets in Zone 2 grew faster (average 0.63 mm per month) than the limpets in Zone 1 (average 0.11mm per month). 

In addition, an experiment was conducted in Zone 1 from May to July in 1981 to determine the effects of adult density and macroalgal cover on limpet recruitment. It was found that there was no effect of adult density but a significant interactive effect of algal cover and sampling date on the number of limpet recruits.

Tags: 24 488001, Aquatic Habitat, Benthic Habitat, Biosphere, Competition, Ecological Dynamics, Feeding Habitat, Griffith Point, Invertebrates, Life History, Marine Biology, Marine Invertebrates, Oceans, Population Dynamics, San Remo, Siphonaria diemenensis, Zoology, food availabiltiy, gastropoda, intraspecific, limpet, rocky shore
Organization: School of BioSciences, The University of Melbourne
Quantifying the isotopic composition of oxygen and carbon with increasing depth in core GC10, located in the Capricorn Channel

A gravity core (GC10) was collected from a depth of 335 mbsl within the Capricorn Channel, southern Great Barrier Reef (GBR). The data from stable isotopes of Globigerinoides ruber were analysed to allow a preliminary understanding of the hemipelagic sedimentary environment over the last glacial / interglacial cycle. The results suggest that the core reaches the Last Glacial Maximum (LGM) at ~130cm depth, corresponding to isotopically heavier 18O. The 13C appears to lag the 18O signal with the minimums just proceeding the glacial maximums in the 18O.

Tags: 51200000, Biosphere, Foraminifera, Foraminiferans, Foraminiferida, Foraminifers, Isotopes, Microbiota, Paleoclimate
Organization: National Institute of Water and Atmosphere (NIWA)
Population dynamics of the infaunal bivalve, Soletellina alba

The population dynamics of the infaunal bivalve Soletellina alba were investigated at three sites situated in close proximity to the mouth of the Hopkins River estuary from 1997 to 1999. The distribution and abundance of juvenile and adult S.alba was very variable across all dates, sites and channel elevations (i.e. water depths). An experimental test comparing the recruitment of juveniles at different channel elevations and in sediments of varying particle size was conducted  during 1999. The results of these tests showed that recruitment was greatest at the shallowest channel elevation and there was little evidence that sediment particle size influenced recruitment. In contrast to 1999, recruitment during 1997 or 1998 was very low.

Growth rates were monitored using tagged individuals held in caged and uncaged plots, which revealed that growth was highly variable among individuals, but not between sites. These tests also revealed that growth was negligible during the colder, winter months, and that the fastest growing individuals were capable of growing 0.2 mm/day.

Salinity tolerance experiments showed that bivalves exposed to low salinities (< 6 ppt), exhibited poorer condition and took longer to re-burrow into sediments than those exposed to greater salinities (> 14 ppt), while death of bivalves exposed to salinities < 1 ppt occurred after 8 days of exposure. These tests provide evidence that low salinities are probably the principal cause of mass mortalities that are observed during winter flooding, although the interaction between salinity, temperature and turbidity also deserve consideration in the future. 

It is hypothesised that the survival of very young juveniles (between 0.5mm and 1mm shell length) and rapid growth rates are important features of the life history of S.alba that explain its successful persistence within the Hopkins River estuary. It is highly likely that this species is capable of completing its entire life cycle within the estuary. The absence of other nearby populations, and periods of mouth closure, are likely to greatly limit the potential contribution made by larvae entering from the surrounding marine environment. This study has added to our knowledge of how an infaunal bivalve copes with life in the intermittently closing estuaries that typify semi-arid coastlines in the Southern Hemisphere.

Tags: 23 357024, Aquatic Habitat, Benthic Habitat, Biosphere, Ecological Dynamics, Estuarine Habitat, Invertebrates, Marine Biology, Marine Invertebrates, Oceans, Population Dynamics, Soletellina alba, Species Recruitment, Zoology, estuary mouth, infauna, soft sediments
Organization: School of Life and Environmental Sciences (LES), Deakin University
Population dynamics of shrimp populations in Western Port Bay, Victoria

This study investigated seasonal variation in the abundances and size distribution of shrimp species in Western Port Bay, Victoria from July 1977 to January 1980. Four species, Macrobrachium intermedium, Pontophilus candidus, Hippolyte caradina and Chlorotocella leptorhyncus, were sampled using a beam trawl as described in the record 'The ecology and trophic role of caridean shrimps in the eelgrass community of Western Port, Victoria' (File identifier: 268431c0-f18e-11dc-aaae-00188b4c0af8). Individuals in each sample were counted, identified, sexed, size measured (total length, carapace length), and reproductive state of females noted. The relationship between body size and ash-free dry mass was obtained in order to calculate the standing crop and productivity of each species. 

M.intermedium was the numerically dominant shrimp species in the eelgrass. Mean densities of P.intermedius and H.cardian were 20-50% and 3-4% less abundant than M.intermedium, respectively. Maximum abundances of M. intermedium and P.intermedius occurred early in the year and coincided with the recruitment of large numbers of juveniles. Densities of H.caradina showed high variability between years.   Low capture efficiency of C.leptorhyncus meant that this species was excluded from the analyses.

Tags: 28 756901, 28 767018, 28 770020, 28 781018, 63 619003, 63 619004, Aquatic Habitat, Benthic Habitat, Biosphere, Chlorotocella leptorhyncus, Community Structure, Ecological Dynamics, Flowering Plants, Heterozostera tasmanica, Hippolyte caradina, Invertebrates, Macrobrachium spp., Malacostraca, Marine Biology, Marine Invertebrates, Oceans, Phillip Island, Pontophilus candidus, Population Dynamics, Predation, Rhyll, Trophic Dynamics, Vegetation, Western Port Bay, Zoology, Zostera muelleri, carid prawn, carid shrimp, carid shrimps, eelgrass, hump-backed shrimp, tidal flats
Organization: Cliffs Natural Resources
Population Density, Australia 2011 (ABS)

This data set contains the Australian Bureau of Statistics population data for Australian states and territories. Population data was collected as part of national census’ in 1991, 1996, 2001, 2006 and 2011. Data presented is the total population for all collection districts by place of enumeration. District Boundaries differed for each census and therefore were re-projected onto the 2011 population mesh blocks to standardise the spatial extent of the reporting areas. Given the focus of this project, population data was clipped by a 50km coastal buffer. 

Note: population data for census’ 1991 – 1996 - 2001 was purchased by NESP and is made publically available through by NESP

Note: population data for 2006 and 2011 was downloaded through the ABS webportal. 
http://www.abs.gov.au/websitedbs/censushome.nsf/home/tablebuilder?opendocument&navpos=240

Note. 2006 Census district boundaries were downloaded from the ABS website
http://www.abs.gov.au/AUSSTATS/abs@.nsf/Lookup/2919.0.55.001Main+Features1Aug%202006?OpenDocument
and 2011 population mesh blocks
http://www.abs.gov.au/ausstats/abs@.nsf/mf/1270.0.55.001


This data contains geographical information in shape files that represent the population density in Australia, from 1991 to 2011. The data contains the summary polygon, state_code, cd_code19, 91_pop_dat (population count), area and density (in persons per km^2). For other data sets the count will be 96_pop_dat, 2001_pop_dat, 2006_pop_dat and 2011_pop_dat.

Tags: Population
Organization: Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS)
P&O Nedlloyd Brisbane HPLC Pigment and Ocean Colour Data December 1999 - October 2000

This record contains data collected on the P&O Nedlloyd Brisbane between December 1999 and October 2000 as part of the CSIRO Ocean Observing Experiment (COOE). This vessel circumnavigated Australia every 28 days with an additional stop in the Port of Singapore. Underway T, S and F were measured continuously throughout the period of the project. At times an observer was on board and collected samples from the outflow of the underway system for the determination of chlorophyll and carotenoid pigments, the absorption co-efficient for the dissolved component (aCDOM) of the water and salinity. In all 277 samples were collected during the 10 month period of the project. Retrieved chlorophyll a estimates from the SeaWifs ocean colour sensor were also collected and compared with the in situ data.

Organization: CSIRO Oceans and Atmosphere - Information and Data Centre
Phytoplankton Ecology in the Upper Swan River Estuary, Western Australia - Summary

The aim of the study was to determine the extent to which phytoplankton population in the upper Swan River Estuary, W.A. (see thumbnail) are controlled by physico-chemical parameters (bottom-up) or biological (top-down) factors through water samples taken from November 1995 to January 1999 that measured NO3-, NH4+, Total Nitrogen and Carbon, Temperature, Salinity, Oxygen, Irradiance, Chlorophyll and Phytoplankton Species.

Tags: Biosphere, Coastal Processes, Ecological Dynamics, Estuaries, Food-web Dynamics, Microbiota, Microheterotroph, Nitrogen uptake, Oceans, Phytoplankton
Organization: Poplin Pty Ltd
Phytoplankton Ecology in the Upper Swan River Estuary, Western Australia - Species composition and distribution patterns

This study correlated temporal and depth differences in phytoplankton species distribution  with various physical and chemical parameters in the upper Swan River Estuary between November 1995 and May 1999, with the aim of identifying environmental or physiological factors that may enhance one species' competitive advantage over others.

Tags: Biosphere, Chlorophyll, Coastal Processes, Conductivity, Estuaries, Light Transmission, Microbiota, Oceans, Oxygen, Phytoplankton, Water Quality, Water Temperature
Organization: Poplin Pty Ltd
Phytoplankton Ecology in the Upper Swan River Estuary, Western Australia - Seasonal nitrogen uptake rates and preferential uptake of inorganic and organic nitrogen and comparison of C:N ratios

The major aim of the study was to determine monthly and seasonal nitrogen uptake by phytoplankton communities of the three nitrogen species NO3-, NH4+ and urea from 1998 to 1999 at the Ron Courtney Island site, representing "new" inorganic-based production, regenerated inorganic-based production and organic-based production respectively.

Tags: Biosphere, Chlorophyll, Coastal Processes, Ecological Dynamics, Estuaries, Microbiota, Nitrogen Compounds, Nutrient Cycling, Oceans, Phytoplankton, Water Quality
Organization: Poplin Pty Ltd
Phytoplankton Ecology in the Upper Swan River Estuary, Western Australia - Nitrogen uptake for inorganic and organic nitrogen sources

The main aim of this study was to detemine seasonal uptake kinetics for the different nitrogen species; two inorganic sources (NO3- and NH4+), and an organic source (urea) in the upper Swan River estuary from November 1997 to November 1998.  Uptake kinetics were related to species composition and ambient concentrations of these three nitrogen sources to determine whether physiological adaptation to the ambient N-species concentrations present are indicated in seasonal species assemblages

Tags: Biosphere, Coastal Processes, Estuaries, Microbiota, Nitrogen Compounds, Oceans, Phytoplankton, Water Quality
Organization: Poplin Pty Ltd
Phytoplankton Ecology in the Upper Swan River Estuary, Western Australia - Microheterotroph grazers and their impact on phytoplankton biomass

Species composition trends for the microheterotrophic grazing community (<300 um) over an annual period (1998-1999) were determined for the upper Swan River estuary.  Also differences in grazing rates, monthly over an annual cycle and changes in grazing pressure and grazer species composition over the course of a typical (summer dinophyte) bloom were measured.

Tags: Biomass, Biosphere, Coastal Processes, Ecological Dynamics, Estuaries, Food-web Dynamics, Microbiota, Oceans, Phytoplankton, microheterotroph
Organization: Poplin Pty Ltd
Phytoplankton Ecology in the Upper Swan River Estuary, Western Australia - A comparison of nitrogen uptake by seasonal bloom assemblages

Maximum nitrogen uptake rates (Vmax) and preferential nitrogen sources were determined for the different major bloom types between November 1995 and May 1996 in the upper Swan River Estuary.  These uptake rates and preferences were related to the pattern of succession for phytoplankton blooms and diurnal changes in ambient nutrient concentrations for NH4+ in the summer bloom.

Tags: Biosphere, Chlorophyll, Coastal Processes, Ecological Dynamics, Estuaries, Microbiota, Nitrogen Compounds, Nutrient Cycling, Oceans, Phytoplankton, Water Quality
Organization: Poplin Pty Ltd
Phytoplankton dynamics in a seasonal estuary - Swan River Estuary, Western Australia

To examine how phytoplankton biomass and species' successions are influenced by multiple variables in the Swan River estuary, the four primary phytoplankton groups were modelled with a three-dimensional hydrodynamic model (Estuarine and Lake Computer Model; ELCOM) coupled with an ecological model (Computational Aquatic Ecosystem Dynamics Model; CAEDYM) to simulate physical and ecological processes in the Swan River estuary, Western Australia.  The model was run using inputs of bathymetry, meteorological, flow and water quality data.  The water quality data was collected weekly at nine sites along a 20 km domain of the Swan River estuary, from Blackwall Reach to Success Hill Reserve from October 1994 to July 1998 for this study.

Tags: Aquatic Habitat, Bathymetry, Biomass, Biosphere, Chlorophyll, Coastal Processes, Conductivity, Ecological Dynamics, Estuarine Habitat, Microbiota, Nutrients, Ocean Chemistry, Ocean Temperature, Oceans, Oxygen, Phytoplankton, Population Dynamics, Saltwater Intrusion, Tidal Height, Tides, Water Depth, Water Quality, Water Temperature
Organization: Water Studies Centre (WSC), Monash University
Phytoplankton concentration measurements in Sydney Harbour, Summary.

A study of the response of phytoplankton to rainfall in Sydney Harbour is reported here. Sydney Harbour is an important port and recreational region for the city of Sydney. Phytoplankton can be used as one of the indexes of water quality. The concentration of phytoplankton is influenced by the nutrients in the water and the amount of nutrients is thought to alter according to the urban and industrial wastes that drain from the city of Sydney.    

The amount of phytoplankton before and after rainfall at Pyrmont in Sydney Harbour was observed. The concentration of chlorophyll after a period of rainfall from the 15th October to the 4th November 2004, as measured from the surface to 7m deep, was almost 5 times as much as that as before the rain event. The maximum chlorophyll concentration observed by fluorometer was 27 [ug/litre].

Tags: Biosphere, Fluorescence, Microbiota, Ocean Optics, Oceans, Phytoplankton, Turbidity
Organization: Ocean Technology Group (OTG), The University of Sydney (USYD)
Phytoplankton concentration measurements in Sydney Harbour - 4th November 2004

A study of the response of phytoplankton to rainfall in Sydney Harbour on 4th November 2004 is reported here. 

Sydney Harbour is an important port and recreational region for the city of Sydney. Phytoplankton can be used as one of the indexes of water quality. The concentration of phytoplankton is influenced by the nutrients in the water and the amount of nutrients is thought to alter according to the urban and industrial wastes that drain from the city of Sydney.    
The amount of phytoplankton before and after rainfall at Pyrmont in Sydney Harbour was observed. The concentration of chlorophyll after a period of rainfall from the 15th October to the 4th November 2004, as measured from the surface to 7m deep, was almost 5 times as much as that as before the rain event. The maximum chlorophyll concentration observed by fluorometer was 27 [ug/litre].

Tags: Biosphere, Chlorophyll, Microbiota, Ocean Optics, Oceans, Phytoplankton, Turbidity, Water Quality, chlorophyll concentration, depth, phytoplankton count
Organization: Ocean Technology Group (OTG), The University of Sydney (USYD)
Phytoplankton concentration measurements in Sydney Harbour - 30th October 2004

A study of the response of phytoplankton to rainfall in Sydney Harbour on 30th October 2004 is reported here. 

Sydney Harbour is an important port and recreational region for the city of Sydney. Phytoplankton can be used as one of the indexes of water quality. The concentration of phytoplankton is influenced by the nutrients in the water and the amount of nutrients is thought to alter according to the urban and industrial wastes that drain from the city of Sydney.    

The amount of phytoplankton before and after rainfall at Pyrmont in Sydney Harbour was observed. The concentration of chlorophyll after a period of rainfall from the 15th October to the 4th of November 2004, as measured from the surface to 7m deep, was almost 5 times as much as that as before the rain event. The maximum chlorophyll concentration observed by fluorometer was 27 [ug/litre].

Tags: Biosphere, Chlorophyll, Microbiota, Ocean Optics, Oceans, Phytoplankton, Turbidity, Water Quality, data parameter chlorophyll concentration, data parameter depth, data parameter phytoplankton count
Organization: Ocean Technology Group (OTG), The University of Sydney (USYD)
Phytoplankton concentration measurements in Sydney Harbour - 29th October 2004

A study of the response of phytoplankton to rainfall in Sydney Harbour, on the 29th of October 2004, is reported here. Sydney Harbour is an important port and recreational region for the city of Sydney. Phytoplankton can be used as one of the indexes of water quality. The concentration of phytoplankton is influenced by the nutrients in the water and the amount of nutrients is thought to alter according to the urban and industrial wastes that drain from the city of Sydney.    
The amount of phytoplankton before and after rainfall at Pyrmont in Sydney Harbour was observed. The concentration of chlorophyll after a period of rainfall from the 15th October to the 4th of November 2004, as measured from the surface to 7m deep, was almost 5 times as much as that as before the rain event. The maximum chlorophyll concentration observed by fluorometer was 27 [ug/litre].

Tags: Biosphere, Chlorophyll, Microbiota, Ocean Optics, Oceans, Phytoplankton, Turbidity, Water Quality, data parameter chlorophyll concentration, data parameter depth, data parameter phytoplankton count
Organization: Ocean Technology Group (OTG), The University of Sydney (USYD)
Phytoplankton concentration measurements in Sydney Harbour - 27th October 2004

A study of the response of phytoplankton to rainfall in Sydney Harbour on 27th October 2004 is reported here. 

Sydney Harbour is an important port and recreational region for the city of Sydney. Phytoplankton can be used as one of the indexes of water quality. The concentration of phytoplankton is influenced by the nutrients in the water and the amount of nutrients is thought to alter according to the urban and industrial wastes that drain from the city of Sydney.   
 
The amount of phytoplankton before and after rainfall at Pyrmont in Sydney Harbour was observed. The concentration of chlorophyll after a period of rainfall from the 15th October to the 4th of November 2004, as measured from the surface to 4m deep, was almost 5 times as much as that as before the rain event. The maximum chlorophyll concentration observed by fluorometer was 27 [ug/litre].

Tags: Biosphere, Chlorophyll, Microbiota, Ocean Optics, Oceans, Phytoplankton, Turbidity, Water Quality, chlorophyll concentration, depth, phytoplankton count
Organization: Ocean Technology Group (OTG), The University of Sydney (USYD)
Phytoplankton concentration measurements in Sydney Harbour - 26th October 2004

A study of the response of phytoplankton to rainfall in Sydney Harbour on 26th October 2004 is reported here. 

Sydney Harbour is an important port and recreational region for the city of Sydney. Phytoplankton can be used as one of the indexes of water quality. The concentration of phytoplankton is influenced by the nutrients in the water and the amount of nutrients is thought to alter according to the urban and industrial wastes that drain from the city of Sydney.    

The amount of phytoplankton before and after rainfall at Pyrmont in Sydney Harbour was observed. The concentration of chlorophyll after a period of rainfall from the 15th October to the 4th of November 2004, as measured from the surface to 7m deep, was almost 5 times as much as that as before the rain event. The maximum chlorophyll concentration observed by fluorometer was 27 [ug/litre].

Tags: Biosphere, Chlorophyll, Microbiota, Ocean Optics, Oceans, Phytoplankton, Turbidity, Water Quality, chlorophyll concentration, depth, phytoplankton count
Organization: Ocean Technology Group (OTG), The University of Sydney (USYD)
Phytoplankton concentration measurements in Sydney Harbour - 22nd October 2004

A study of the response of phytoplankton to rainfall in Sydney Harbour, on the 22nd October 2004, is reported here. Sydney Harbour is an important port and recreational region for the city of Sydney. Phytoplankton can be used as one of the indexes of water quality. The concentration of phytoplankton is influenced by the nutrients in the water and the amount of nutrients is thought to alter according to the urban and industrial wastes that drain from the city of Sydney.    
The amount of phytoplankton before and after rainfall at Pyrmont in Sydney Harbour was observed. The concentration of chlorophyll after a period of rainfall from the 15th October to the 4th of November 2004, as measured from the surface to 7m deep, was almost 5 times as much as that as before the rain event. The maximum chlorophyll concentration observed by fluorometer was 27 [ug/litre].

Tags: Biosphere, Chlorophyll, Microbiota, Ocean Optics, Oceans, Phytoplankton, Turbidity, Water Quality, data parameter chlorophyll concentration, data parameter depth, data parameter phytoplankton count
Organization: Ocean Technology Group (OTG), The University of Sydney (USYD)