Flower E. Msuya

Flower E. Msuya
University of Dar es Salaam, Dar es Salaam, Tanzania · Botany

PhD

About

94
Publications
114,443
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
1,870
Citations
Introduction
I am work8ng on a project *GlobalSeaweedSTAR"-safeguarding the future of seaweed aquaculture. We are researching on seaweed genetics, biosecurity, diseases and socioeconomic. The aim is to share the results with stakeholders to get good quality seed, practice proper biosecurity measures, mitigate diseases and improve farmer resilience.
Education
September 1999 - February 2004
Tel Aviv University
Field of study
  • Seaweed Biofilters

Publications

Publications (94)
Article
Full-text available
Seaweed-based mariculture is an important source of livelihoods for impoverished coastal communities in Tanzania. However, the impacts of climate change across East Africa are putting a strain on the growth of the seaweed industry. Smallholder farmers are already mobilizing strategies to cope with challenges such as disease outbreaks, but they are...
Article
Full-text available
Global demand for seaweed and its products has increased exponentially over the last 25 years. Equally, the continent of Africa and its offshore islands have considerable potential for seaweed production to contribute to world demand. Compared with China and the rest of Asia, Africa lags behind in seaweed production and utilisation. However, for re...
Technical Report
Full-text available
The seaweed industry makes a significant contribution to Tanzania’s economy, but this has been severely impacted due to climate-induced pest and disease outbreaks in the recent years. Seaweed farming is a crucial livelihood option for coastal communities, which may be marginalised or hindered in their income generating options, particularly th...
Article
Seaweeds form the second largest global aquaculture product in volume, and despite rapid growth of the sector over the last 25 years, production and quality in top producing regions is becoming increasingly limited due to disease and pest outbreaks, the spread of non-native cultivars and the degradation of genetic health due to inbreeding. Most not...
Article
Full-text available
Highlights 1. This policy brief highlights key challenges that must be addressed for the long-term sustainability of the global seaweed industry, ensuring its role in providing nature-based solutions within the sustainable ocean economy agenda and in contributing to the UN Decade of Ocean Science for Sustainable Development (2021-2030). 2. Seaweed...
Technical Report
Full-text available
Cottier-Cook, E.J., Nagabhatla, N., Asri, A., Beveridge, M., Bianchi, P., Bolton, J., Bondad-Reantaso, M.G., Brodie, J., Buschmann, A., Cabarubias, J., Campbell, I., Chopin, T., Critchley, A., De Lombaerde, P., Doumeizel, V., Gachon, C.M.M., Hayashi, L., Hewitt, C.L., Huang, J., Hurtado, A.Q., Kambey, C., Kim, G.H., Le Masson, V., Lim, P.E., Liu, T...
Article
A decline in seaweed production in Tanzania is attributed to a rising prevalence of pathogens that have subsequently reduced the quantity and commercial value of the crop. This constraint has led to severe socio-economic implications for the seaweed industry, threatening the livelihoods of tens of thousands of farmers. Despite the growing demands f...
Article
Full-text available
Societal Impact Statement Seaweed cultivation is the fastest‐growing aquaculture sector, with a demonstrable potential to drive development in some of the poorest coastal populations worldwide. However, sustainable exploitation, fair access and equitable benefits from marine genetic resources, such as seaweeds have yet to be fully realised. Patchy...
Article
Full-text available
Farming of Eucheuma denticulatum is a major activity in Zanzibar affecting seagrass ecosystems primarily through shading and trampling. The aim of this study was to test the impacts of shading and trampling during seaweed farming on seagrass meadows composed by Halophila stipulacea and Thalassia hemprichii and their associated benthic macroalgae. A...
Article
Full-text available
Pest and disease outbreaks have significant impacts on the livelihoods of seaweed farmers each year, particularly in low- to middle-income countries around the world. Commercial seaweed farming of the red carrageenophytes, Eucheuma denticulatum, Kappaphycus alvarezii and Kappaphycus striatus, in Tanzania was established in 1989. The impacts of pest...
Article
Full-text available
Each year a significant proportion of global food production is lost to pests and diseases, with concerted efforts by government and industry focussed on application of effective biosecurity policies which attempt to minimise their emergence and spread. In aquaculture the volume of seaweeds produced is second only to farmed fish and red algal carra...
Article
Full-text available
Tanzania is endowed with a rich biodiversity of seaweed species that grow naturally in its oligotrophic waters of the Western Indian Ocean. Most of these species are unexploited. Only two red seaweeds Eucheuma and Kappaphycus have been studied for commercial farming and the industrial production is based on these species. Another genus of red seawe...
Article
This study focused on identifying the rotenoids from the Tephrosia vogelli plant (fish-poison-bean), investigating the toxic potency of a crude T. vogelii extract and individual rotenoids (tephrosin, deguelin and rotenone) in vitro and in vivo and assessing the mode of action. A trout (Onychorynhis mykiss) gill epithelial cell line (RTgill-W1) was...
Article
Full-text available
In Zanzibar, seaweed farming is a small-scale but important livelihood activity carried out mainly by women. Women producers are, however, confronted with many challenges: inadequate technology, climatic variations, low yields, economic inefficiencies and social and cultural constraints. Tubular nets – an innovation piloted in the context of the Se...
Article
Full-text available
Seaweeds have been used as a food for centuries in Asia and are increasingly exploited as a source for dietary supplements, animal feed, chemicals, and biofuels. In recent years, there has been an increase in the prevalence of diseases and pests in these aquaculture crops, with a subsequent reduction in their quantity and commercial value. In this...
Conference Paper
Full-text available
Global aquaculture production continues to increase, whilst capture fisheries stagnate. The cultivation of marine and freshwater species has undergone a dramatic global expansion since the 1960s (5.8 – 6.9% yr-1), exceeding the annual growth rates of many other important commercial agricultural products, such as livestock (1.9% yr-1) and cereals (2...
Technical Report
Full-text available
Seaweed farming using pegs and ropes was introduced in Zanzibar 30 years ago and became an important livelihood source for the women of the island. Since then, climatic variations, low productivity and prices, inappropriate technology and difficult work conditions have increasingly challenged their economic and social benefits from the activity. To...
Article
Full-text available
The small-fisheries social-ecological system in the western Indian Ocean (WIO) represents a typical social-ecological trap setting where very poor natural resources dependent coastal communities face local and global threats and engage in unsustainable practices of exploiting limited resources. Community-based aquaculture (CBA) has been implemented...
Article
Full-text available
Managing integrated social-ecological systems to reduce risks to human and environmental wellbeing remains challenging in light of the rate and extent of undesirable changes that are occurring. Developing frameworks that are sufficiently integrative to guide research to deliver the necessary insights into all key system aspects is an important outs...
Chapter
Kappaphycus and Eucheuma species have been successfully cultivated in Southeast Asia since the early 1970s. The increasing global demand for carrageenan in processed foods and thereby the need for industrial-scales of biomass to be provided to feed an extraction industry, exceeded wild stock availability and productivity and commercial demands coul...
Article
Full-text available
In most developing countries, the majority of people involved with seaweed farming are women. Their immense contribution to the industry has been widely demonstrated and evaluated in successful examples/case studies. These ‘seaweed women’ have made significant advances in the sustainability of seaweed farming for more than four decades and their de...
Article
Full-text available
Mangroves provide multiple benefits, from carbon storage and shoreline protection to food and energy for natural resource-dependent coastal communities. However, they are coming under increasing pressure from climate change, coastal development, and aquaculture. There is increasing need to better understand the changes mangroves face and whether th...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Full-text available
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Full-text available
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Conference Paper
Full-text available
Global aquaculture production continues to increase, whilst capture fisheries stagnate (FAO et al. 2014). Many wild fisheries have been overexploited and cultivation, if managed sustainably, is a viable alternative. The seaweed industry is undergoing a rapid global expansion and currently accounts for ~27% of the total global aquaculture production...
Article
Full-text available
A rising number of valuable uses being found for seaweed -- from food and fertilizer to pharmaceuticals and industrial gels -- is driving the rapid growth of an industry that could easily and needlessly drop into some of the same pitfalls previously experienced in both agriculture and fish farming. Drawing on the expertise of 21 institutions worldw...
Article
Full-text available
Aquaculture in the Zanzibar Islands of Tanzania (Fig. 1) takes place mainly in the marine environment. The main types of farmed organisms are seaweed (Eucheuma denticulatum, Kappaphycus striatum, and Kappaphycus alvarezii), marine finfish (milkfish Chanos chanos and mullet Mugil cephalus), bivalve shellfish (pearl oyster Pinctada martensii, P. marg...
Article
Deposit-feeding sea cucumbers play a key role in marine ecosystems through biotur- bation, burrowing and feeding on organic matter in marine sediments. Many deposit-feeding holothurians have therefore been recommended for integrated multitrophic aquaculture systems (IMTA). We set up an integrated mariculture system of sea cucumber Holothuria scabra...
Chapter
Algae are a diverse group of photosynthetic organisms that can easily grow in marine, fresh-, and wastewater environments. About 90% of marine plants are algae that efficiently convert carbon dioxide into sugars and oxygen, hence being responsible for more than 50% of the global carbon fixation and oxygen production. There are more than 200,000 dif...
Article
Full-text available
The farming of the red seaweed Kappaphycus alvarezii and related species as raw material for the hydrocolloid carrageenan rapidly spread from the Philippines in the late 1960s to Indonesia, Tanzania, and other tropical countries around the world. Although numerous studies have documented positive socioeconomic impacts for seaweed farming, factors s...
Article
Commercially valuable sea cucumbers are potential co-culture species in tropical lagoon environments, where they may be integrated into established aquaculture areas used for seaweed farming. In the current study, wild-caught juvenile sea cucumbers, Holothuria scabra, and red seaweed Kappaphycus striatum were co-cultured on Zanzibar, United Republi...
Article
Full-text available
Tanzania, like many other countries where eucheumatoid seaweeds are farmed, is experiencing die-off of Kappaphycus alvarezii. Farming is failing in many cultivation sites in shallow intertidal areas where it used to grow well. Production has fallen dramatically, and in some areas, hardly any seaweed is produced any longer. This study was carried ou...
Article
Full-text available
Tanzania, like many other countries where eucheumatoid seaweeds are farmed, is experiencing die-off of Kappaphycus alvarezii. Farming is failing in many cultivation sites in shallow intertidal areas where it used to grow well. Production has fallen dramatically, and in some areas, hardly any seaweed is produced any longer. This study was carried ou...
Conference Paper
Full-text available
One of the three most important industries bringing foreign income to Zanzibar Islands of Tanzania is seaweed farming. The industry is the third most important employing about 20,000 farmers with a production of 15,087 tonnes dry seaweed per year (2012). There has been a recent incidence of algal blooms that have affected the farms and the farmers...
Article
Full-text available
Since commercial seaweed cultivation in Tanzania started in 1989, only limited research has been done on impact of stocking density and nutrients, which are factors that may limit seaweed growth. In this study, Eucheuma denticulatum and Kappaphycus alvarezii were cultivated at low (50 g cuttings of seaweed (half of what farmers use) in 4m long nylo...
Article
Full-text available
Seaweed farming in the Western Indian Ocean (WIO) Region is carried out in a number of countries, most of them farming Eucheuma denticulatum, Kappaphycus alvarezii and Kappaphycus striatum. These species are farmed mostly in Tanzania with limited production in Madagascar, Mozambique and Kenya; current production (2012) stands at 15,966 t (dry weigh...
Data
Seaweed mariculture has been promoted as a development project in tropical countries and Zanzibar, Tanza-nia, is commonly presented as a successful story. However, the results of the present research provide a nu-anced picture of the activity identifying serious health problems among farmers. Semi-structured interviews were conducted with female se...
Article
Full-text available
Kappaphycus alvarezii and Eucheuma denticulatum were cultivated under two treatments: with & without additional nutrients in Uroa, Zanzibar. The seaweeds were cultivated for 8 weeks (total of 15 weeks) in contrast to the 4-6 weeks normally used by farmers. Water column nutrients were 8-17µM total ammonia nitrogen & 2-38 µM soluble reactive phosphat...
Article
Full-text available
The effects of seagrass cover and nutrients on seaweed cultivation were examined in tidal pools in Tanzania. The seaweeds Eucheuma denticulatum and Kappaphycus alvarezii were cultivated from August 2006 - August 2007 in pools with and without seagrasses, and with and without added nutrients. Growth rates of fertilised E. denticulatum were significa...
Article
Seaweed mariculture has been promoted as a development project in tropical countries and Zanzibar, Tanzania, is commonly presented as a successful story. However, the results of the present research provide a nuanced picture of the activity identifying serious health problems among farmers. Semi-structured interviews were conducted with female seaw...
Technical Report
Full-text available
This study examines the relationship between Community-Based Organizations (CBOs) and marine and coastal resource management in the Western Indian Ocean Region. It explores what roles CBOs play in relation to natural resource utilisation and whether they have an ability to act effectively as community managers of these resources. The research focus...
Book
Full-text available
The culture of marine organisms (mariculture) is a growing industry worldwide, and both developing and developed countries are now enganging in it. While it may be a good source of protein as well as income, there is a need to ensure that mariculture is conducted in such a way that it causes as little impact as possible to the marine environment. O...