Few data but many fish

Marine small-scale fisheries catches for Mozambique and Tanzania

Jennifer Jacquet, H. Fox, H. Motta, A. Ngusaru, D. Zeller

    Research output: Contribution to journalArticle

    Abstract

    The fisheries data supplied to the Food and Agriculture Organization of the United Nations (FAO) by national agencies have served as the primary tool for many global and regional studies. However, it is recognised that these data are incomplete and often underestimate actual catches, particularly for small-scale fisheries. This study reconstructed total marine fisheries catches from 1950 to 2005 for Mozambique and the United Republic of Tanzania, by applying an established catch reconstruction approach utilising all available quantitative and qualitative data, combined with assumption-based estimations and interpolations. Since the 1950s, Mozambique has reported primarily industrial catches and has substantially under-reported the country's small-scale fishing sector due to lack of resources and civil war. In Tanzania, Zanzibar's recorded fisheries statistics prior to 2000 are absent from Tanzania's marine fisheries catches reported to FAO, and total mainland catches are at least one-third larger than officially reported. Based on our reconstruction, since 2000, Mozambique caught between 150 000 and 172 000 t y-1, while the United Republic of Tanzania caught at least 95 000 t y-1. For the period 1950-2005, reconstructed total marine catches were 6.2 and 1.7 times greater than data supplied to FAO by Mozambique and Tanzania respectively. The reliance on incomplete and substantially under-reported national data puts authorities under serious risk of over-licensing fishing access and mismanaging marine ecosystems and national food security.

    Original languageEnglish (US)
    Pages (from-to)197-206
    Number of pages10
    JournalAfrican Journal of Marine Science
    Volume32
    Issue number2
    DOIs
    StatePublished - Nov 2010

    Fingerprint

    Mozambique
    Tanzania
    marine fish
    fishery
    fisheries
    Food and Agricultural Organization
    fish
    marine fisheries
    fishing
    fishery statistics
    fisheries statistics
    Zanzibar
    Food and Agriculture Organization
    United Nations
    civil war
    food security
    marine ecosystem
    interpolation
    agriculture
    food

    Keywords

    • Catch rates
    • Catch reconstructions
    • Food security
    • Malthusian overfishing
    • Small-scale fisheries
    • Sub-Saharan Africa
    • Subsistence fisheries

    ASJC Scopus subject areas

    • Aquatic Science
    • Ecology, Evolution, Behavior and Systematics

    Cite this

    Few data but many fish : Marine small-scale fisheries catches for Mozambique and Tanzania. / Jacquet, Jennifer; Fox, H.; Motta, H.; Ngusaru, A.; Zeller, D.

    In: African Journal of Marine Science, Vol. 32, No. 2, 11.2010, p. 197-206.

    Research output: Contribution to journalArticle

    Jacquet, Jennifer ; Fox, H. ; Motta, H. ; Ngusaru, A. ; Zeller, D. / Few data but many fish : Marine small-scale fisheries catches for Mozambique and Tanzania. In: African Journal of Marine Science. 2010 ; Vol. 32, No. 2. pp. 197-206.
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