Impact of wet season river flood discharge on phytoplankton absorption properties in the southern Great Barrier Reef region coastal waters

Cherukuru, Nagur, Brando, Vittorio E., Blondeau-Patissier, David, Ford, Phillip W., Clementson, Lesley A., and Robson, Barbara J. (2017) Impact of wet season river flood discharge on phytoplankton absorption properties in the southern Great Barrier Reef region coastal waters. Estuarine, Coastal and Shelf Science, 196. pp. 379-386.

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Abstract

Light absorption due to particulate and dissolved material plays an important role in controlling the underwater light environment and the above water reflectance signature. Thorough understanding of absorption properties and their variability is important to estimate light propagation in the water column. However, knowledge of light absorption properties in flood impacted coastal waters is limited. To address this knowledge gap we investigated a bio-optical dataset collected during a flood (2008) in the southern Great Barrier Reef (GBR) region coastal waters. Results presented here show strong impact of river flood discharges on water column stratification, distribution of suspended substances and light absorption properties in the study area. Bio-optical analysis showed phytoplankton absorption efficiency to reduce in response to increased coloured dissolved organic matter presence in flood impacted coastal waters. Biogeophysical property ranges, relationships and parametrisation presented here will help model realistic underwater light environment and optical signature in flood impacted coastal waters.

Item ID: 58057
Item Type: Article (Research - C1)
ISSN: 1096-0015
Copyright Information: Copyright Elsevier 2017
Funders: Great Barrier Reef Marine Park Authority, CSIRO Wealth from Oceans Flagship, Great Barrier Reef Foundation, Science Industry Endowment Fund
Research Data: https://www.sciencedirect.com/science/article/pii/S0272771416303833#ack0010
Date Deposited: 17 Apr 2019 09:22
FoR Codes: 04 EARTH SCIENCES > 0405 Oceanography > 040501 Biological Oceanography @ 50%
02 PHYSICAL SCIENCES > 0205 Optical Physics > 020501 Classical and Physical Optics @ 50%
SEO Codes: 96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960507 Ecosystem Assessment and Management of Marine Environments @ 100%
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