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Started By
Message
re: Wildlife and Fisheries and Ducks Unlimited have destroyed Rollover Bayou
Posted on 9/3/15 at 12:54 pm to jimbeam
Posted on 9/3/15 at 12:54 pm to jimbeam
quote:
Fresh water won't kill saltwater species. Those species will just be outcompeted by fresh water species
That may be correct. However, the one thing you can absolutely bank on is that there will be another hurricane or tropical storm which will flood the former salt marsh, now dominated by freshwater species, with salt water. If freshwater species have taken over due to artificial amounts of retained freshwater, then what is there will be killed. A healthy brackish marsh along the coast is a protective barrier. If the ducks don't want to land there, they will land a few miles further inland, as they have done for ... what ... thousands of years? tens of thousands of years?
Posted on 9/3/15 at 12:57 pm to TBoy
I'm not saying that isn't true, just wanted to clarify
Posted on 9/3/15 at 1:16 pm to Galactic Inquisitor
quote:Yes it absolutely does. Fresh, salt, or brackish it doesn't matter, moving water causes erosion.
Fresh water does not cause erosion. Salt killing vegetation is a bigger culprit.
Posted on 9/3/15 at 2:13 pm to Capt ST
quote:
they have grown accustomed to catch speckled trout where they used to catch sac a lait. And heaven forbid they have to run more than 5 mins
Well stated, and the troof
Posted on 9/3/15 at 2:33 pm to TBoy
quote:
they will land a few miles further inland, as they have done for ... what ... thousands of years? tens of thousands of years?
Not even close to true...salt water intrusion was not the problem it is today before the levees. Ducks wouldn't be landing further inland then, they would have been landing closer to the coast and still having the proper vegetation there.
Over the last century, many of our brackish waterways have become salt water and many of our fresh water have become brackish completely ruining their prior ecosystems. There is a reason Lake Maurpas has banks filled with cypress trees that are dying and are having stingrays and other salt water species being caught at camps on Blind River.
We did the damage with the levees and now after all the years of negative impact people are looking for a quick fix that is anything but getting rid of the levees. Problem is how do you expect to fix 100+ years of negative impact fast enough for those impacted immediately in the short term to not bitch and moan to see the long term goal?
Posted on 9/3/15 at 4:25 pm to Scrowe
quote:
Lake Maurpas has banks filled with cypress trees that are dying
Dude, the problems on the Mississippi River side of the state are very different than the issues in lower Vermilion and Calcasieu Parish. There are no levees denying needed sediment to Rockefeller Refuge. Sediment in the Refuge from the use of weirs and dams is actually a growing problem. Generic ideas and approaches to coastal issues can cause real damage in an area which requires a different analysis and approach.
I'll give you another irrelevant example. In New Orleans the way to build sturdy houses is to driving pilings into the ground until you hit something solid. After Katrina there was an influx of New Orleans engineers and builders and evacuee home builders in Lafayette. They wanted their houses built like in Metairie, and so they drove pilings in Lafayette until they hit something solid, and poured their slabs on the pilings. Unfortunately, the hard layer under Lafayette is a layer of expansive clay, which expands when it rains and contracts when it is dry. Those pilings used under homes in River Ranch and other areas of town pushed upward when the clay expanded, upward into the slabs of the houses, and pulled away during dry months. The movement is still tearing those homes apart.
Don't assume that just because blocking out salt water and introducing extra fresh water improves the quality of the coast in the Eastern part of the state, that that same formula is good for the coast in the central part.
Posted on 9/3/15 at 6:13 pm to TBoy
First off the builders that drove piles and stopped in clay should have their Ford F-250s taken away along with their contractor licenses. You stop piles at a sand formation not clay.
The natural progression is for the ridge to be overwashed and degraded over time. The only place I can see sediment being supplied to Rockfeller is during a storm unless there is some agricultural runoff. You remove the weirs and let nature take its course you are going loose a lot more than just a summer of throwing a cast net. The fourchon headland is prime example, with every storm another cut is created.
The natural progression is for the ridge to be overwashed and degraded over time. The only place I can see sediment being supplied to Rockfeller is during a storm unless there is some agricultural runoff. You remove the weirs and let nature take its course you are going loose a lot more than just a summer of throwing a cast net. The fourchon headland is prime example, with every storm another cut is created.
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