NPR/NGS Radio Expeditions
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Jean Lafitte National Historical Park and Preserve; Barataria Preserve
Jefferson, Louisiana, United States
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Latitude and Longitude 29.791, -90.147 Map

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Equipment Notes: Two-Channel Mono. Show: Louisiana Date: 9/16/05 DAT #9 TD = Tom Doyle DM = David Muth CS = Chris Swarzenki Tom = Thomas G. Hargis CJ = Chris Joyce JG = Jessica Goldstein Talking about plans 2:48 DM - this tall grass that looks like cattail is actually called giant cutgrass, Zizaniopsis, barbed edges, it will cut you badly and it is a favorite roosting site, during the day, of tree frogs. You can see right on these fronds here - tree frogs here and here. And my hypothesis for why that is true is that the - one of the main predators of these tree frogs is little type of Gardner snake called a riddler (?) snake and it is probable that they can't easily climb into this grass w/out cutting themselves to shreds. So I assume it is a protective thing, plus of course their color blends in nicely. But if you start looking at the fronds you will see more and more of the frogs. 3:34 3:34 - 3:59 bit of ambi right there 4:37 walking on planks of boardwalk 4:57 DM There is another little tree frog out on that Sagittaria leaf but they are on the vegetation everywhere here. This is frog paradise here. 5:07 5:59 - 6:40 ambi (nice crickets? Frogs?) 6:48 TD - we are just south of NO proper, southwest - 35 or 40 miles (this is muddled) from the gulf. One can take a boat from here and make it all the way to the gulf of mexico 7:08 7:09 CJ - so you might call this liquid land. TD - oh definitely I like that term, LIQUID LAND. It is - water is the important compont of what is here and why it is here. 7:47 airboat motor shut down 7:52 DM - ok, can you take us all at once? All aboard! 8:05 DM - watch the fire ants! 8:51 some clanking as we get on the boat **8:59 - 11:59 airboat start and then drive off, slow down, then drive faster and then shut down get out of boat 12:00 Thank you Tom (the airboat captain) Walking off boat and talking in bg Stop down for lunch 12:44 CJ - maybe it is time for me to put my boots on We are with Chris Swarzenki? as he sets up his experiment 14:29 CS - I am Chris Swarzenki. I work with the US Geological Survey in Baton Rouge. (says it again) as a wetland ecologist hydrologist and we are here at Jean Lafitte National Park about 2 weeks after Hurricane Katrina coming to some long term stations that were (sp) with monitoring water quality and water levels some basic hydrology and chemistry of the marshes. We have 10 yrs worth of data out here at about 10-12 stations throughout the park and diff kinds of habitats. And this is our southern most habitat where we are at right now. From here, if you were on the water in about an hour and a half you will be in the Gulf of Mexico, direct line, there are no obstructions. And this marsh we are at is the most saline of the fresh water peat marshes in Jean Lafitte Natl Parks. The salinity of the soil here is the highest and the vegetation reflects that somewhat higher salinity. 15:39 we have sartina patons (sp) and something called scorpis aleinae (sp) at one point - the three cornered glass. I think it is shinoplexus ameracanus now (sp). This is more of - this is sort of in the boundary btwn brackish and intermediate marsh and salinity may be about 4 parts per thousand when the gulf of mexico maybe 25 parts per thousand and some of the other marshes we will look at today the salinities will be almost completely fresh, zero, half a part per thousand. CJ - off mic - is this the first time you have been here since HK 16:12 - CS - this is the first time. Right now we are in a mode where we come out about every 3 - 6 months and check on some water quality. We have some instruments that are recording water level and marsh mat movements since a lot of these marshes here are floating and we download that data usually about 3 - 6 months apart. This is sort of the quiet phases of ... (Notes truncated)

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22 Apr 2010 by Ben Brotman
21 Apr 2010 by Ben Brotman
22 Apr 2010 by Ben Brotman