Dugong reproductive behaviour in Koh Libong, Thailand: observations using drones. Dugong populations are decreasing worldwide due to human activities. Reproductive behaviour observations are valuable due to the scarce information on dugong reproductive behaviour, which vary between populations. Surveys were carried out to document dugong reproductive behaviour at the island of Koh Libong, province of Trang, Thailand. Aerial images of dugong reproductive behaviour were captured using a zoom camera mounted on a drone. Images clearly revealed several stages of matting (following, approaching and stimulating, pairing, mounting and separating). In addition, we also identify a possible method to track individual dugongs by recording the tusk scars in dorsal regions using drone images. This study highlights the importance of small quadcopter drones as a cost-efficient tool to document dugong behaviour such as mating, identification of individuals, measurement of body mass index, contributing to an effective conservation effort. . . Read more at.... Infantes E, Cossa D, Stankovik M, Panyawai J, Tuntiprapas P, Daochai C, Prathep A. (2020) Dugong reproductive behaviour in Koh Libong, Thailand: observations using drones. Aquatic mammals, 46(6): 603-608. . Download at: https://www.eduardoinfantes.com/pubs/dugong-behaviour-drone/ or at: https://www.aquaticmammalsjournal.org/index.php?option=com_content&view=article&id=2099:dugong-dugong-dugon-reproductive-behaviour-in-koh-libong-thailand-observations-using-drones&catid=190&Itemid=326

Rätt täthet, rätt sorts djup och rätt planteringsmönster. Det handlar om ålgräsodlingar under vattenytan. Ett projekt som under två år gått mycket trögt men som nu Göteborgs hamn har lyckats med. – Ålgräsängar är havets barnkammare och en väldigt viktig miljö för fiskarnas föryngring, säger Edvard Molitor, hållbarhetschef på Göteborgs hamn.

Eelgrass has been declining in the Swedish West coast since the 80's and there is an increasing interest to stop this decline and restore the bays that were lost. The Zorro group at Gothenburg University is developing and implementing methods for large-scale restoration in Sweden. In Kosterhavet National Park, eelgrass has vanished in two bays, Tånguden and Långevik. After a drone survey in 2018 where eelgrass was mapped in the park, we found that 16.1 hectares of eelgrass were lost since the 80's. Now, after successful small planting test, we are coordinating a large effort to restore 1 hectare of eelgrass in 2020 and another 1-2 hectares in 2021. www.eduardoinfantes.com Twitter: @ed_infantes Instagram: @edinfantes