Exploring the demarcation requirements of fish breeding and nursery sites to balance the exploitation, management and conservation needs of Lake Victoria ecosystem

Aura, Christopher Mulanda; Nyamweya, Chrisphine Sangara; Njiru, James M.; Musa, Safina; Ogari, Zachary; May, Linda ORCID: https://orcid.org/0000-0003-3385-9973; Wakwabi, Enock. 2019 Exploring the demarcation requirements of fish breeding and nursery sites to balance the exploitation, management and conservation needs of Lake Victoria ecosystem [in special issue: Proceedings of the African Great Lakes Conference, Entebbe, Uganda, 2–5 May 2017] Fisheries Management and Ecology, 26 (5). 451-459. 10.1111/fme.12311

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Abstract/Summary

Fisheries resources in vital freshwater ecosystems have been reported to be under immense threat, resulting in conflicts between conservation, management and exploitation. This study established requirements for identifying and mapping fish breeding and nursery grounds in such ecosystems in the Kenyan part of Lake Victoria. The criteria were characterised by the use of indigenous knowledge, field data, literature on breeding sites, macroinvertebrates distribution, larval and relative fish abundances, digitisation, participatory mapping, and periodic sampling. Data were collected from trawl and seine net surveys. Digitisation and mapping of the proposed conservation sites were carried out using Quantum GIS software. Participatory physical demarcation of sites was done using buoys and markers. Larval and juvenile fishes were diverse and abundant in all seven river mouths and six bays surveyed with little variance; an important aspect of breeding areas. Additionally, a preponderance of macroinvertebrates and high fish diversity compared with offshore sites in the lake strengthened the hypothesis that these are critical habitats for spawning and preferred habitats for nurseries for fish. The approach can be adopted globally to guarantee the long‐term integrity of critical fish habitats for sustainable fisheries management and blue growth.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	10.1111/fme.12311
UKCEH and CEH Sections/Science Areas:	Water Resources (Science Area 2017-)
ISSN:	0969-997X
Additional Keywords:	blue economy, conflicts, criteria, critical habitats, integrity, lake-fishery, SUNRISE
NORA Subject Terms:	Ecology and Environment
Date made live:	25 Oct 2018 10:07 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/521342

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