Data

The Phytoplankton Ecology of Wilson Inlet, Western Australia - Nitrogen Uptake

Australian Ocean Data Network
Twomey, Luke
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
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/9dc208c0-461c-11dc-bc9b-00188b4c0af8&rft.title=The Phytoplankton Ecology of Wilson Inlet, Western Australia - Nitrogen Uptake&rft.identifier=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/9dc208c0-461c-11dc-bc9b-00188b4c0af8&rft.description=The phytoplankton uptake rates of ammonium, nitrate and urea on monthly, seasonal and annual time scales in Wilson Inlet were measured. In addition, it was determined whether phytoplankton community in Wilson Inlet was preferentially using a particular form of nitrogen and whether the ambient concentration of ammonium, nitrate or urea was limiting to phytoplankton biomass production.Maintenance and Update Frequency: notPlannedStatement: Fourteen field trips were conducted at three sampling stations (see Fig 3.1 of thesis), between January 1997 to November 1998. During periods of high water column primary production in spring, field sampling was intensified to determine which sources of nitrogen were responsible for the initiation and maintenance of phytoplankton blooms. Water column temperature, salinity and dissolved oxygen concentrations were measured with a Hydrolab H2O multiprobe (Hydrolab Corportation, Austin Texas, USA) at 0.5 m intervals from the surface to the bottom. Water samples for nutrient and chlorophyll a analysis were collected at the surface and bottom of each site. Water samples collected for dissolved nutrient analyses were immediately filtered through 0.45 um cellulose nitrate membranes with a diameter of 47 mm (Whatman). Chlorophyll a samples were collected by filtering of a known volume of sample water through 47 mm glass fibre filters (Whatman, GF/C) with a nominal pore size of 1.2um. Nutrient samples and chlorophyll a samples were stored below 4 degrees Celsius and sent for analysis within one week at the Australian Environmental Laboratories. Duplicate chlorophyll a samples were collected and measured immediately upon return to the laboratory (&rft.creator=Twomey, Luke &rft.date=2007&rft.coverage=westlimit=117.31; southlimit=-35.03; eastlimit=117.49; northlimit=-34.95&rft.coverage=westlimit=117.31; southlimit=-35.03; eastlimit=117.49; northlimit=-34.95&rft_subject=oceans&rft_subject=INLETS&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=COASTAL PROCESSES&rft_subject=PHYTOPLANKTON&rft_subject=BIOLOGICAL CLASSIFICATION&rft_subject=PROTISTS&rft_subject=PLANKTON&rft_subject=BIOMASS&rft_subject=BIOSPHERE&rft_subject=VEGETATION&rft_subject=NITROGEN COMPOUNDS&rft_subject=TERRESTRIAL HYDROSPHERE&rft_subject=WATER QUALITY/WATER CHEMISTRY&rft.type=dataset&rft.language=English Access the data
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Full description

The phytoplankton uptake rates of ammonium, nitrate and urea on monthly, seasonal and annual time scales in Wilson Inlet were measured.

In addition, it was determined whether phytoplankton community in Wilson Inlet was preferentially using a particular form of nitrogen and whether the ambient concentration of ammonium, nitrate or urea was limiting to phytoplankton biomass production.

Lineage

Maintenance and Update Frequency: notPlanned
Statement: Fourteen field trips were conducted at three sampling stations (see Fig 3.1 of thesis), between January 1997 to November 1998. During periods of high water column primary production in spring, field sampling was intensified to determine which sources of nitrogen were responsible for the initiation and maintenance of phytoplankton blooms. Water column temperature, salinity and dissolved oxygen concentrations were measured with a Hydrolab H2O multiprobe (Hydrolab Corportation, Austin Texas, USA) at 0.5 m intervals from the surface to the bottom. Water samples for nutrient and chlorophyll a analysis were collected at the surface and bottom of each site. Water samples collected for dissolved nutrient analyses were immediately filtered through 0.45 um cellulose nitrate membranes with a diameter of 47 mm (Whatman). Chlorophyll a samples were collected by filtering of a known volume of sample water through 47 mm glass fibre filters (Whatman, GF/C) with a nominal pore size of 1.2um. Nutrient samples and chlorophyll a samples were stored below 4 degrees Celsius and sent for analysis within one week at the Australian Environmental Laboratories. Duplicate chlorophyll a samples were collected and measured immediately upon return to the laboratory (<24 h). The chlorophyll a concentrations were determined by acetone extraction and analysed by spectrophotometry. Ammonium, nitrate and total nitrogen (TN), were determined by an Auto-Analyser with a detection limit of 0.36 ug-atoms N liter-1 for NH4+ and NO3- and 3.6ug-atoms N liter-1 for TN. Urea concentration was determined using the urea-diacetyl monoxime method with a detection limit of 0.1 ug-atoms N liter-1. For further methods see Chapter 5 of the thesis.

Notes

Credit
National Eutrophication Management Program and Water and Rivers Commission of WA (now Department of Water)

Created: 08 08 2007

Data time period: 1997-01 to 1998-11

This dataset is part of a larger collection

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117.49,-34.95 117.49,-35.03 117.31,-35.03 117.31,-34.95 117.49,-34.95

117.4,-34.99

text: westlimit=117.31; southlimit=-35.03; eastlimit=117.49; northlimit=-34.95

Subjects
BIOLOGICAL CLASSIFICATION | Biomass | BIOSPHERE | COASTAL PROCESSES | EARTH SCIENCE | Inlets | Nitrogen Compounds | OCEANS | Phytoplankton | PLANKTON | PROTISTS | TERRESTRIAL HYDROSPHERE | VEGETATION | WATER QUALITY/WATER CHEMISTRY | oceans |

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Other Information
(PhD Thesis)

url : http://adt.curtin.edu.au/theses/available/adt-WCU20020415.154409/

Identifiers
  • global : 9dc208c0-461c-11dc-bc9b-00188b4c0af8