Our Marshes Are Dying -- Courant.com
...The fate of Banca marsh, and of tidal wetlands around the world, may be tied to rising sea levels and global warming in intriguing ways. The life of these simple grasses ebbs and flows to the moon's orbital cycles, to the pressing influence of humans and perhaps even to a fungus that sails across the Atlantic Ocean on dust storms kicked up by drought in Africa.
"Sudden dieback" may be a misnomer: For more than a decade scientists have been uncovering troubling changes in marshes around the world and trying to decipher the causes. So far, there is no one simple answer....