Combining in-situ water quality and remotely sensed data across spatial and temporal scales to measure variability in wet season chlorophyll-a:Great Barrier Reef lagoon(Queensland,Australia)  

作　　者：Michelle J Devlin Eduardo Teixeira da Silva Caroline Petus Amelia Wenger Daniel Zeh Dieter Tracey Jorge GÁlvarez-Romero Jon Brodie 

机构地区：[1]Catchment to Reef Research Group,TropWater,James Cook University,Townsville,QLD,4811,Australia [2]Australian Research Council Centre of Excellence for Coral Reef Studies,James Cook University,Townsville,QLD,Australia [3]School of Marine and Tropical Biology,James Cook University,Townsville,QLD,Australia

出　　处：《Ecological Processes》2013年第1期328-349,共22页生态过程（英文）

基　　金：The authors would like to thank the Department of Sustainability,Environment,Water,Population and Communities and the Great Barrier Reef Marine Park Authority for their financial support for the ongoing work in the Reef Rescue Marine Monitoring Program.We would also like to acknowledge the contribution of valuable discussions and interactions with staff within the collaborating organisations in the MMP.In addition,the field assistance and coordination from Jason and Rebecca Rowlands at Mission Beach Charters is greatly appreciated.Thank you to the reviewers and editors for comments which have greatly improved the contents of this paper.

摘　　要：Introduction:Combining in-situ data from single-point time series with remotely sensed spatial data allowed a greater elucidation of changes in chlorophyll-a concentrations through wet season conditions in the Great Barrier Reef coastal waters.Methods:Single-point time-series data were collected from 2006 to 2012 during high river flow conditions to assess changes in phytoplankton biomass(measured as chlorophyll-a).Additionally,three flood plume water types,derived from classified true-colour Aqua moderate resolution imaging spectroradiometer(MODIS)images,were used to group single-point time-series data for the phytoplankton biomass assessment.Results:Survey data illustrate the heterogeneity of chlorophyll-a distribution over seasonal and inter-annual cycles and the difficulty in describing community responses through the wet season.The spatial data demonstrate distinct regional differences throughout the Great Barrier Reef.The high chlorophyll-a concentrations measured in flood plume waters immediately adjacent to the inshore,highly turbid‘inner’flood plume are a product of sufficient light,given most of the suspended solids have settled from the plume,and the availability of sufficient nutrients,which drive higher phytoplankton production and characterise the formation of secondary stage flood plumes.The formation and extent of these secondary flood plumes were mapped using MODIS true-colour satellite imagery.The distance and the location of the secondary plume water are reliant on flow,coastal hydrodynamics,and biological activity.Conclusions:The combination of in-situ data and remotely sensed data provides information on the complexity of these coastal processes during the wet season and offers managers a more comprehensive understanding of the extent of nutrient enrichment in the Great Barrier Reef coastal area and the potential influence of flood plumes on coastal marine ecosystems.

关 键 词：CHLOROPHYLL-A Great barrier reef PHYTOPLANKTON Monitoring Remote sensing MODIS 

分 类 号：P73[天文地球—海洋科学]