Integrated seaweed – sea cucumber farming in Tanzania

Abstract

Aims and scope: The Western Indian Ocean Journal of Marine Science provides an avenue for the wide dissemination of high quality research generated in the Western Indian Ocean (WIO) region, in particular on the sustainable use of coastal and marine resources. This is central to the goal of supporting and promoting sustainable coastal development in the region, as well as contributing to the global base of marine science. The journal publishes original research articles dealing with all aspects of marine science and coastal management. Topics include, but are not limited to: theoretical studies, oceanography, marine biology and ecology, fisheries, recovery and restoration processes, legal and institutional frameworks, and interactions/relationships between humans and the coastal and marine environment. In addition, Western Indian Ocean Journal of Marine Science features state-of-the-art review articles and short communications. The journal will, from time to time, consist of special issues on major events or important thematic issues.

Review of fisheries and management of sea cucumbers in the Indian Ocean

“…An up-date of the fishery status in this country will be useful. Co-culture trials for seaweed and sea cucumbers were started since 2011, and the synthesis from the experiments and the questions asked is detailed in Kunzmann et al (2018).…”

Drone-Based Characterization of Seagrass Habitats in the Tropical Waters of Zanzibar

“…Steps 1-11 correspond to the decisions made for: (1-2) the site selection, where S2 imagery, literature, and reconnaissance surveys were used; drone planning in (3) flight design, including choice of optimal days for mapping; (4) drone image capturing; (5) in situ data collection to create waypoints with GPS receiver, and photo quadrats and videos with Paralenz camera and underwater drones. In step (6), data organization involved post-field data preparation for processing, this included checking for data accuracy, data entry, and creating vector spatial layers; (7) data processing, where we transformed individual photos into orthomosaics with Agisoft and transferred the tiff files into the ArcGIS environment for the creation of an integrated geodatabase ready for step (8), in which the OBIA classification was performed. In step (9), validation and accuracy, the assessment was executed with reimplementation of maximum likelihood algorithm (MLA) if the classification was not to the desirable accuracy, and, if desirable, step (10) followed to allow for the production of classified cover maps, and these cover maps were used to undertake, in step (11), the fragmentation analysis with the landscapemetrics R package.…”

“…Seagrasses are vital components of nearshore shallow-water ecosystems, as nurseries for juvenile fish, and as hotspots for abundant invertebrates [3][4][5]. Seagrass habitats also function as feeding grounds for small pelagic species, such as grazers, sea turtles, and sea urchins, among others [6], and they support aquacultures as well [7,8]. Furthermore, the seagrass habitats are important blue carbon sinks [9,10], and they play a crucial role in wave dissipation, sediment stabilization, and the uptake and retainment of nutrients in coastal waters [11][12][13][14].…”

Toward integration of sea cucumber and cockles with culture of shrimps in earthen ponds in Kenya

“…Wild stock depletion and increased demand for the species triggered interest to develop culture techniques for H. scabra aimed at increasing the numbers, reducing fishing pressure from the wild while providing alternative sources of income in different countries across the globe (Kumara & Dissanayake, 2017). Some countries like Vietnam, Madagascar, Tanzania, and the Philippines initiated restocking and sea ranching (Eriksson, de la Torre‐Castro, Purcell, & Olsson, 2014; Kunzmann, Beltran‐Gutierrez, Fabiani, Namukose, & Msuya, 2018; Purcell, Hair, & Mills, 2012; Senff, Blanc, Slater, & Kunzmann, 2020; Watanabe, Sumbing, & Lebata‐Ramos, 2014).…”