Wiers Opening?

[Smalls]

Originally Posted by TNP

Can someone just tell me the scientific reason behind closing them. I understand salinity levels being too high. What does that do to the marsh? Kill Widgeon grass I heard.

Kills all sorts of vegetation, not just widgeongrass. The Marsh is brackish, fresh in some areas. If the salinity gets too high, it will kill majority of the vegetation. I've seen it at times get to 36 ppt. Depending on who you ask, gulf strength is 32-36 ppt. Either way, that's to high for the Marsh. A lot of the high shrimp numbers historically were due to a large portion of the Marsh dieing off at one time. Shrimp and crabs feed on dead plant material. But they also use the Marsh as a breeding ground. So while some dead vegetation is good, too much is a bad thing.

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