Riding small native Irish horses, 'hobins", which are well suited to the marshes and rugged terrain of Ireland, the Gaelic Hobiguir are able to outmaneuvre heavier cavalry with ease."
Clapper rails in particular are highly dependent on the marshes-including fiddler crabs, a dietary staple-and they'll have nowhere to go if the oil arrives.
In New Zealand the plant has spread rapidly, changing mudflats with marshy fringes to extensive salt meadows and reducing the number and kinds of birds and animals that use the marsh.
Spartina has the ability to take up sulfides and convert them to sulfate, a form of sulfur that the plant can use; this ability makes it easier for the grass to colonize marsh environments.