WEBVTT 1 00:00:03.038 --> 00:00:05.165 BIO250 Paleoecology, Department of biological sciences, University of Bergen 2 00:00:05.165 --> 00:00:09.425 We are at Lygra, near Bergen in Hordaland 3 00:00:09.425 --> 00:00:13.270 students walk on a path in the fields 4 00:00:13.270 --> 00:00:15.460 they wear raingear and boots, and carry equipment down to a bog 5 00:00:15.460 --> 00:00:23.128 students work in small groups, looking a core samples and taking notes 6 00:00:23.128 --> 00:00:43.482 text - "The bog" - we see an aerial view of the bog marked with a pin, a small forest is visible in the foreground, a fjord in the background 7 00:00:43.482 --> 00:01:05.957 text - "The transect" - a group of students walk across the fieldwork area, they use a long measuring tape to mark a transect 8 00:01:05.957 --> 00:01:19.050 text - "Coring at the bog" - students work at various locations, looking at core samples, taking measurements and writing down notes in a book 9 00:01:19.050 --> 00:01:29.075 text - "The russian corer" 10 00:01:29.075 --> 00:01:40.268 2 students are assembling a russian corer, putting together the sampler and a T-shaped handle 11 00:01:40.268 --> 00:01:52.287 the 2 parts are secured with a screw that goes all the way through the tube of the sampler 12 00:01:52.287 --> 00:02:11.491 the students are pushing down the sampler in the ground 13 00:02:11.491 --> 00:02:23.408 an additional rod is added to the assembly to bring the sampler further down, and secured with a screw 14 00:02:23.408 --> 00:03:02.593 a stronger handle is mounted on the rod 15 00:03:02.593 --> 00:03:13.458 the students rotate the handle counterclockwise and lift the corer out of the ground 16 00:03:13.458 --> 00:03:32.570 the rods and handles are being dismounted 17 00:03:32.570 --> 00:03:44.255 the students look at the sample in the corer, checking layers, looking at the texture of the sample and taking measurements 18 00:03:44.255 --> 00:03:49.582 text - "Take field notes" 19 00:03:49.582 --> 00:04:11.950 students take notes of the measurements, the sample properties, and other useful observations 20 00:04:11.950 --> 00:04:16.248 text - "Preserving the core" 21 00:04:16.248 --> 00:04:33.485 students put the core sample onto a sheet of aluminium foil 22 00:04:33.485 --> 00:05:04.715 the sample is now being wrapped in a plastic foil, and marked before being stored away 23 00:05:04.715 --> 00:05:10.320 aerial view of the bog