Brief description
This data collection was started in 2005 as part of the Reef Plan. Nearshore water quality data from direct water sampling by Niskin cast (suspended solids; chlorophyll; nitrogen, phosphorus and organic carbon species; silicate), summarised for the whole Great Barrier Reef and for each Natural Resource Management (NRM) region, by year (2005/06, 2006/07, etc.) and season (dry season, May-Oct; and wet season, Nov-Apr). Salinity, secchi depth, and temprature. From October 2007 data loggers are deployed at 14 sites to record readings of chlorophyll a and turbidity every 10 minutes. Water column profiles of salinity, temperature and turbidity (as % transmission) using CTD casts. Geographic areas (note not all locations have all data in all years/seasons) relate to the NRM regions: mainly Wet Tropics NRM, Burdekin NRM, Mackay Whitsunday NRM, Fitzroy NRM, some mention of Burnett Mary NRM and Cape York NRM. From 2008 sampling points are focused close to inshore reefs.Notes
Data forms a baseline for assessing future changes in water quality on inshore reefs of the Great Barrier Reef. Objectives are to: Determine persistent spatial patterns and, where long-term data are already available, long-term (decadal) trends in inshore coral communities within the Great Barrier Reef lagoon, particularly in inshore habitats most directly affected by river runoff; and to explore the usefulness of autonomous instruments for high-frequency measurements of local water quality at inshore reef sites. The key aim of turbidity measurement is to detect long-term trends, if any, in loads of sediments delivered to the mouths of significant or representative rivers entering the Great Barrier Reef lagoon, and thereby, to assist assessments of the effectiveness of land-based delivery reduction measures under the Reef Plan. Ongoing, direct monitoring of lagoon waters to provide data for those variables that cannot be measured by instrumental methods or remote sensing techniques (e.g. organic matter, nutrients and pesticides) and to provide suitable high quality validation data for the remote sensing and instrumentation approaches The reef monitoring sites are close to the sampling locations for lagoon water quality to assess the relationship between changes in reef communities and changes in water quality as well as other more acute impacts.Lineage
Information pertaining to quality control and assurance generally includes the assessment of the limit of detection (LOD), measurements of accuracy (e.g. using reference materials to assess recovery of known amount of analyte) and precision (the repeated analyses of the same concentration of analyte to check for reproducibility). Some results are also validated by using an alternative method for comparison. Detailed QAQC data are available.Created: 20050101
Data time period: 01 01 2005
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- URI : eatlas.org.au/data/uuid/a5a02dc8-16b4-4b50-abad-af4a1c1e9c49
- global : a5a02dc8-16b4-4b50-abad-af4a1c1e9c49
