ML141295
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Subject 1: (Interview). Subtitle: Mark Fonseca. Timecode In: 00:04:33. Timecode out: 00:25:52. Notes: Benthic microalgae and coral reefs. Subject 2: (Interview). Subtitle: John Burke. Timecode In: 00:04:33. Timecode out: 00:25:52. Notes: Benthic microalgae and coral reefs. Equipment Notes: Stereo=1; Decoded MS stereo; Neumann RSM 190 through Sonosax preamp into Sony TCDD8. NPR/NGS RADIO EXPEDITIONS Show: Dry Tortugas Log of DAT #: 2 Engineer: Leo del Aguila Date: June 30, 2001 John Burke (John) Mark Fonseca (Mark) Craig Quirolo ?? (Craig) Alex Chadwick (Alex) Leo del Aguila (Leo) ng = not good ok=okay g = good vg = very good [Note: This is a good short scene: Use all three of the following clips with Craig] 00:06 -00:11 -FX Good banging about on the launch 00:12 Craig is getting back in boat from dive + intercom chatter. *00:41 -Craig: "Ok Good dive. Lots of fish ....going out to an algae covered sand plain where the species composition changes -less numbers and less diversity, and that's what we expect to find."0l:08 [VG] JB: "Yes, it was a beautiful spot" + chatter about the dive/tanks etc. 02:00 *02:24 -Craig: "It was a pretty good transect It was definitely into two different habitat zones, and that's what we're looking for, that interface, so we can come back and look at the two different habitats and see what happens after this place falls under protection -which it should, it's a beautiful place 02:41 [VGl John: went over a great big anchor, now covered with corals and sponges, fishing gear down there. *03: 11 -Craig: "Successful dive, one more to go. 3:14 [VGl FX: 03:22 -3:25 Whistle and boat start Craig: "Ok let's go pick up the buoy ...." Back on the Ferrel: -in the van looking over data from the previous dive: 04:51 Mark: So now that we've done the dive, we've got the position fixed, we're criss-crossing the area with the towed sonar system. And what we're seeing scrolling by on the monitor is the sand flat area, but in reality it's revealing itself to be quite a combination of small sand patches about a meter wide, a lot of corral rubble, farther out from the reef. We're about 300-400 meters out from the reef. The ship is going to turn around. We're going to make a run across the reef face. We've dropped down to about 19 -20 meters of water, and we'll come up to about 14 meters to get to reef top. Very gentle slope. A lot of rubble, heavily colonized with gorgonian sponges and live coral. It's opening up a lot more sand here, and when you were in the boat, you could look down and see the dark areas, and the sand break, you get pretty good visibility, it's 61 feet at the bottom .... so this is what you're picking up..... colonized by more than sand. See isolated sponges .... John over here is extracting that micro algae off of the sediment particles. 06:45 One thing we've found that really surprised us was some studies we've done near this area that the productivity just in this top centimeter of the sediment is as much production as we're finding in the entire water column in 90 feet of water that has phyto plankton in it is not producing as much carbons from photosynthesis. It's just that top skim of the seafloor where light is reaching the seafloor. This is why we're exploring this area. It's clearly the breadbasket for the reef systems around here, and separating out how much is coming off the non-reef environments, how much is recycled within the reef is the whole mystery we're after here. 07:46 [move to a more sound friendly place] AC: explain again about this top centimeter 08:40 MF "The shallow ocean floor where we can look over the side of the ship right here and see the dark and light patches. We're in an area where there's a tremendous amount of sunlight reaching the seafloor, maybe as much as 30% of the light that's getting past... (Notes truncated)
Technical information
- Recorder
- SONY TCD-D8
- Microphone
- Accessories
Archival information
- Cataloged
- 3 Dec 2009 - Ben Brotman
- Digitized
- 3 Dec 2009 - Ben Brotman
- Edited
- 3 Dec 2009 - Ben Brotman