In view of all production and productivity problems the seaweed aquaculture industry has been facing as well as the impact of the seaweed die-off on the Island economy with sharp decline of income and revenues for thousands of farmers and traders and, recognizing the compounded problems that about 20,000 seaweed farmers' livelihood are based on a single aquaculture system affecting mostly women and youth, the FAO-funded Technical Cooperation Programme “Support to the Aquaculture Subsector of Zanzibar” (TCP/URT/3401) recognized and recommended the Biological and Economic Research on Seaweed as a relevant pillar of the Aquaculture Development Strategy Plan. This technical report is part of the FAO-TZ project “Support to Seaweed Diseases and Die-off Understanding and Eradication in Zanzibar” TCP/URT/3601/C1, and covers an initial analysis of the die-offs due to epiphyte infestation and ice-ice disease in Zanzibar. The assessment is mainly based on site visits to the seaweed farms in Unguja and Pemba and laboratorial analysis of collected seaweed samples conducted by the authors between February and June 2017. Findings were cross-checked with a literature review on the topic and presented during stakeholders’ meetings in both Islands.

This book collates the latest information on Kappaphycus and Eucheuma seaweeds. The edited volume provides an important companion to anyone studying or working with what is the world’s largest cultivated marine plant biomass. The contributing authors have excelled in providing information on production and present and future uses of these carrageenan-bearing seaweeds. Important elements of taxonomy, distribution and methods of cultivation and processing are presented to the reader in an accessible and easily understood format. The book provides a number of valuable opinions on value addition and MUZE technologies which highlight value-chains associated with these important red algae.

Carrageenan is a gelling agent extracted from red seaweeds and it has multiple applications in the food processing and other industries. Increasing demand for carrageenan has led to rapid expansion of carrageenan seaweed (primarily Kappaphycus and Eucheuma) farming in tropical areas. This expansion is expected to continue, but many issues need to be addressed to enable the sector to develop its full potential in contributing towards sustainable livelihoods, human development and social well-being. Including six country case studies and a global synthesis, this document provides a comprehensive and balanced assessment of the economic, social and governance dimensions of carrageenan seaweed farming. Information and insights provided by this document should facilitate evidence-based decision-makings in both the public and private sectors.

This book provides a thorough understanding of the key policy debates on international trade and investment for development with a focus on the East African Community (EAC) to strengthen Member States’ capacity to develop policies to promote their exports’ competitiveness and diversification. Beyond Member States’, the book serves as a base for a deeper understanding of the challenges, opportunities and requirements of the intra-continental trade agreement which is now in sight with the ratification of the Tripartite (EAC-COMESA-SADC) Free Trade Area that is critical in addressing key constraints to trade in the African continent. Moreover, the lessons from this edited volume may also extend to the challenges and opportunities of the African Continental Free Trade Area. The book brings together a comprehensive overview and an evidence-based analysis that can be considered best practice in the region. The trade and investment policy analysis of constraints and opportunities aims to improve trade and competitiveness and covers macro- (economy-wide), meso- (sectoral) and micro- (firm or household) levels. This multi-level approach is crucial for understanding how current trade and investment policies limit competitiveness and diversification in order to identify more tangible policy action for overcoming such constraints. The individual contributors follow comprehensive applied empirical approaches, and each chapter generates knowledge needed to identify key challenges and opportunities focusing on research-led policy-relevant approaches that enable readers to better understand national, bilateral, and multilateral cooperation as well as policies for sustainable development in East Africa. The contributors know the EAC context very well as their engagement in policymaking goes beyond the context of the papers they are writing about. The individual chapters were developed as part of a research and capacity building programme under the aegis of ACP and EU that we implemented in 2020-2022. The research project well fits into the Frontiers in African Business Research series as we have many African contributors. The contributions matter to policymakers and academic circles. For students, the book serves as an excellent guide for understanding international trade and investment theories and gaining up-to-date knowledge on developments in the world economy and their effects on developing countries and SDGs. Trade policy researchers and students will be able to extend theories and empirical data to address new and emerging topics beyond the settings already covered in the book.

Algae, including seaweeds and microalgae, contribute nearly 30 percent of world aquaculture production (measured in wet weight), primarily from seaweeds. Seaweeds and cmicroalgae generate socio-economic benefits to tens of thousands of households, primarily in coastal communities, including numerous women empowered by seaweed cultivation. Various human health contributions, environmental benefits and ecosystem services of seaweeds and microalgae have drawn increasing attention to untapped potential of seaweed and microalgae cultivation. Highly imbalanced production and consumption across geographic regions implies a great potential in the development of seaweed and microalgae cultivation. Yet joint efforts of governments, the industry, the scientific community, international organizations, civil societies, and other stakeholders or experts are needed to realize the potential. This document examines the status and trends of global algae production with a focus on algae cultivation, recognizes the algae sector’s existing and potential contributions and benefits, highlights a variety of constraints and challenges over the sector’s sustainable development, and discusses lessons learned and way forward to unlock full potential in algae cultivation and FAO’s roles in the process. From a balanced perspective that recognizes not only the potential of algae but also constraints and challenges upon the realization of the potential, information and knowledge provided by this document can facilitate evidence-based policymaking and sector management in algae development at the global, regional and national levels.

Global warming is accelerating faster than the ability for natural repair, and environmental stresses are damaging ecosystems, all affecting physical and biological systems on Earth. A new Nasa-led study shows that human activity has caused climate changes resulting in permafrost thawing, acid rain, and lower productivity in lakes as well as increased emissions of greenhouse gases, including CO2, N20, CH4, CF3, and CFC. Marine plants play a vital role in maintaining the balance of marine environments, while serving as a source of food for humankind and important chemical compounds. Microalgae and seaweed have enormous potential for reducing global warming and climate change. During photosynthesis algae grow, draw CO2 from the atmosphere, release oxygen, and produce solar biofuel. Experts in the life of marine plant ecosystems in globally changing environments contributed chapters to this book. The target readers are phycologists, ecologists, atmospheric scholars, conservationists, environmentalists, and ecologically aware laymen.