Featured News JCU surveys mangroves in wake of mass dieback

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Sun, 28 May 2017

JCU surveys mangroves in wake of mass dieback

Mangrove dieback, Norman River
Mangrove dieback, Norman River

A team from James Cook University’s TropWATER centre will film every mangrove between Cairns and Cape York following an unprecedented dieback of the trees in the Gulf of Carpentaria last year.

Dr Norm Duke, leader of the JCU mangrove hub research team, said the scientists will fly the coastline north of Cairns up to Cape York – a shoreline distance of more than 1,500 km, between May 28 and June 5. The research is supported by funding from the Australian Government.

“The aim of the project is to quantify the condition and health of shoreline habitats in the region.  We’ll also stop and take a closer look at key issues and threats to tidal wetlands such as cyclone damaged patches and places threatened by feral pigs and cattle,” he said.

The research takes place after an enormous dieback of 7400 hectares of mangroves was discovered along 1000 kilometres of the Gulf of Carpentaria in 2016. Scientists believe this was due to persistent drought, high temperatures and the sea level dropping during a particularly strong El Nino year.

The Great Barrier Reef bordering the Cape York survey area has been severely damaged by bleaching events caused by a warming sea, but there has been no close assessment of neighbouring mangroves.

“Shoreline mangrove systems are essential for protecting threatened coral reefs. Healthy coral reefs need intact and healthy shoreline mangroves so they can better respond and adapt to warming sea temperatures,” said Dr Duke.

Dr Duke said the JCU team will use MangroveWatch methodologies (www.mangrovewatch.org.au) to assess and geo-tag mangrove and shoreline condition. The plan is to capture aerial and on-ground high-resolution imagery for the compilation of a baseline list of key issues for environmental managers and locals.

“The information will be used to better inform future plans for on-ground projects involving key stakeholders, such as local Traditional Owner Ranger groups,” he said.

As part of the project, the JCU team wants to hear from people about specific local issues such as emerging threats to high value tidal wetland areas of Eastern Cape York Peninsula.

The Australian Government has provided $110,000 to support this priority project under the Reef 2050 Plan. The project forms part of the Eastern Cape York Coastal Habitat Archive and Monitoring Program (CHAMP).

Damage can be reported to mangrovewatch@gmail.com

Images here.


Dr Norm Duke
E: Norman.duke@jcu.edu.au

Jock Mackenzie
E: Jock.mackenzie@jcu.edu.au