Wednesday, March 15, 2017

03 March 2017
By Gabrielle Ahern

Mangrove forests (click here) cover only a small percentage of the planet in comparison to other forest types – roughly 1.9% of coastline in the world – but they contain the largest source of carbon sequestration per hectare of land and are a major player in the carbon cycle of the oceans.

This means they have high economic value as “blue carbon” – carbon captured in oceans and coastal ecosystems – but around the world they have often been destroyed in the course of coastal development, agricultural and mining activities.

Increasingly, however, they are being acknowledged as formidable carbon sinks. But has this acknowledgement come too late? Does the ongoing loss mean we’ve squandered our best last chance to put the brake on global warming?

Carbon is stored as biomass in the sediment captured through the growth of mangroves. The carbon produced by its decomposing roots alone is a major contributor to this complex sink. The removal of mangroves adds 10% to the total carbon lost from global tropical deforestation through greenhouse gas emissions....

Below is the You Tube video of the recently diagnosed dead Mangrove Forests of Australia. That is a lot of chlorophyll and complex biological processes to lose.

March 13, 2017

One of the worst instances of mangrove forest dieback (click here) ever recorded globally struck Australia’s Gulf of Carpentaria in the summer of 2015-16. A combination of extreme temperatures, drought and lowered sea levels likely caused this dieback, according to our investigation published in the journal Marine and Freshwater Research.

The dieback, which coincided with the Great Barrier Reef’s worst ever bleaching event, affected 1,000km of coastline between the Roper River in the Northern Territory and Karumba in Queensland....