Interactive effects of herbicides and higher sea surface temperatures on Great Barrier Reef corals and crustose coralline algae (MTSRF Project 3.7.1a)

The coral, Acropora millepora and the crustose coralline algae, Neogoniolithon fosliei were exposed to 3 photosystem II (PSII) herbicides (diuron, hexazinone and atrazine). Corals were collected at depths between 1 and 3m from Double Cone Island and Hayman Island in the Whitsunday group. The crustose coralline algae was collected from Davies Reef at depths between 5 and 7m. Experiments assessed the effects of the variables temperature (26, 30, 31, 32 °C) in combination with 3 herbicide concentrations, and exposure duration (up to 7 days) on photosynthetic efficiency and bleaching.

To examine the effects of the herbicides diuron, atrazine and hexazinone in conjunction with increasing temperatures on coral and crustose coralline algae.

Related AIMS Publications Negri AP, Flores F, Rothig T and Uthicke S (2011) Herbicides increase the vulnerability of corals to rising sea surface temperature. Limnology and Oceanography 56: 471-485. http://data.aims.gov.au/extp...leId=8706

Principal Investigator
Negri, Andrew P, Dr Australian Institute of Marine Science (AIMS)
Point Of Contact
Australian Institute of Marine Science (AIMS) adc@aims.gov.au

Data collected from 01 Jul 2008 until 30 Jun 2009


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Tags: Oceans - Coastal Processes - Coral Reefs | Biological Classification - Plants - Microalgae | Biological Classification - Plants - Macroalgae (seaweeds) , Red Algae | Biological Classification - Animals/Invertebrates - Cnidarians , Anthozoans/Hexacorals , Hard Or Stony Corals | Biosphere - Ecological Dynamics - Ecotoxicology , Toxicity Levels | Biosphere - Ecological Dynamics - Ecosystem Functions , Photosynthesis | Oceans - Ocean Temperature - Sea Surface Temperature | Herbicides | Diuron | Atrazine | Hexazinone | PAM fluorometry | Climate change | Acropora millepora | Crustose coralline algae (CCA) | Neogoniolithon fosliei