SAY: BI O DI VER SI TY! CLICK!
We are done with our field sampling! Two days ago we finished the trawling surveys, and since then we have been submerged in assessing the diversity of the Bay of Tjärnö using a video camera method. On one hand, we were using a sledge with an attached camera (with and without a net). Pulled for one minute, the structure stayed on the sea bottom and recorded during this minute the communities living there (called a video transect). Once in the lab, part of our group was in charge of analyzing these videos and estimating the number of species and their abundance. A bottom full of algae and sea grass made it difficult to identify all the benthic species. Whereas, other times video footage showed clearly all the organisms attached and living on the bottom. On the other hand, we were using our well known landing platform, that was comparable to a low-cost ROV. We used this platform for two methods! In one method, we took a picture of the sea floor in different areas of the bay. ...










Comments
Post a Comment