Completed · Benthic Ecological Survey

BES — Northern Coast

The northern leg of ASUTA's Benthic Ecological Survey — 2,156 grids of high-resolution seabed imagery across the Dar es Salaam seascape.

StatusCompleted
Timeline2022 — 2024
FunderUSAID
Coverage2 districts & 1 marine reserve
Programme story

Heshimu Bahari was awarded to ASUTA in three components, in this order: BES Northern (1st)BES Southern (2nd)Community Based Activities (3rd). This page covers the BES Northern · 1st award component. The successor flagship is Bahari Yetu.

2,156
Grids surveyed
2
Districts covered
50m
Max depth
1,000m
Grid interval
Project Overview

Evidence for a healthier Dar seascape

The northern Benthic Ecological Survey (BES) is the Dar es Salaam-anchored half of ASUTA's contribution to the USAID Heshimu Bahari Activity. It established a high-resolution baseline of benthic habitats — coral, seagrass and seabed substrates — across the Dar es Salaam Marine Reserves System.

Scope

The northern survey engaged local government authorities and protected-area managers across the Dar es Salaam seascape:

Kinondoni districtKigamboni districtDar es Salaam Marine Reserves System (DMRSF)

Approach

ASUTA deployed marine scientists and short-term technical consultants to execute the survey along a standardised 1,000-metre grid protocol, photographing benthic habitat below the 50-metre depth contour. Imagery was processed and uploaded to Coral-Net for collaborative annotation.

2,156 high-resolution benthic grids were captured along the northern coast — building the first systematic baseline of seabed condition across the Dar es Salaam seascape.

Strategic outcomes contributed to

01

Resilient biodiversity conservation across the Dar es Salaam Marine Reserves System.

02

Strengthened community co-management of MMAs and wild-caught fisheries.

03

Better integration of marine science into management decisions.

04

A defensible baseline for monitoring change over time.

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