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RAPID BIODIVERSITY ASSESSMENT ON THE ESSEI AND
BUTUAH LAGOONS AND THE WHIN RIVER ESTUARY

IN THE SEKONDI-TAKORADI METROPOLIS OF
THE WESTERN REGION OF GHANA



Technical Report





Implemented by the Coastal Resources Center-Ghana and Friends of

the Nation in partnership with:



United States Agency for International Development (USAID)
The University of Rhode Island

The Government of Ghana
SustainaMetrix

The WorldFish Center
AUGUST, 2010

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Citation: Coastal Resource Center-Ghana/Friends of the Nation (2010), Rapid
Biodiversity Assessment on the Essei and Butuah Lagoons and Whin River Estuary in the

Sekondi-Takoradi Metropolis of the Western Region of Ghana. Coastal Resource Center

in Partnership with Friends of the Nation on the Hεn Mpoano Initiative in
Ghana.

Disclaimer: This publication is made possible by the generous support of the American people

through the United States Agency for International Development (USAID)/Ghana. The contents

are the responsibility of the authors as part of the Integrated Coastal and Fisheries Governance

(ICFG) Project and do not necessarily reflect the views of the United States Government.

Associate Cooperative Agreement No. 641-A-00-09-00036-00 for “Integrated Coastal and Fisheries

Governance (ICFG) Program for the Western Region of Ghana,” Under the Leader with Associates

Award No. EPP-A-00-04-00014-00.



















Cover Photos:

Crab species ( ) from the Butuah lagoon,

fish sampling in the Butuah Lagoon, Marine turtle at the mouth of Butuah lagoon.

Hermit crab, sp., Mangroves (

) at the Whin estuary.

Collection of fish species from the Whin Estuary,

Barnacles and Mud skippers ( ) at the Whin estuary.

Photo Credits: S-P. K. Aheto

Compiled by:

Dr. Denis Worlanyo Aheto (Lead Researcher)
Coastal Zone Management Specialist
Department of Fisheries and Aquatic Sciences
University of Cape Coast (UCC)
Private Mail Bag, University Post Office
Cape Coast
Tel: 0242910056
Email: [email protected] or [email protected]



mailto:[email protected]
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Table 25: List of fish species of the Whin Estuary in the Sekondi – Takoradi
Metropolis


Family Species

Mugilidae









Clupeidae

Cichlidae

Gobiidae



Acanthuridae

Labridae

Bothidae

Haemulidae

Lutjanidae

Eleotridae

Gerreidae

Portunidae

Ocypodidae

Grapsidae

Sesarmidae


* = Marine crab ** = Land crab

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Table 26: Species richness of fish communities of the three water bodies

Water Body No. of

Families

No. of fish

species

No. of crab

species

Total no of

species

Essei 8 5 3 8

Butuah 9 10 4 14

Whin 15 16 4 20



Table 27: Richness and diversity indices for the fish communities of the three water
bodies

Water body Margalef‘s Richness

(d)

Shannon – Wiener

diversity ( )

Pielou‘s evenness

( )

Essei 0.99 1.02 0.57

Butuah 1.54 1.56 0.68

Whin 3.21 1.62 0.57



Table 28: Sorensen’s similarity index for pairs of fish communities of the three
water bodies







The two main species which dominated the Essei fish community were

(51.3 %) and (34.3%) while dominated the

Butuah community (49.1 %), followed by (16.3 %) (Fig.

21). The Whin community was dominated by (26.5 %) and the snapper

Essei Butuah

Butuah 0.64

Whin 0.36 0.53

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 Reduction of Environmental Impact from coastal tourism.

 Gulf of Guinea Large Marine Ecosystem Project

 Fisheries Sub-sector Capacity Building Project

 Establishment of a Protected Wetland Ecosystem on the coast

 Development and Implementation of Oil Spill Contigency Plan

 Monitoring of fish stocks levels and associated oceanographic parameters

 Institution of a programme of Monitoring, Compliance and Surveillance of the marine

environment

 Development of industrial pollution standards

 Public education on sound coastal and marine environmental practices

 Scientific information and research on wetlands include works on shorebirds, sea turtles,

mangroves and fish resources.

 Presently the USAID supported Integrated Coastal and Fisheries Governance (ICFG)

Initiative implemented in collaboration with the Friends of the Nation in the Western Region.

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