Paper · 2026 · Oryx

New assessment reveals extraordinary plant diversity at risk in Ngezi–Vumawimbi Forest Reserve, Pemba Island, Zanzibar, Tanzania

Simone Orsenigo; Andrea Lucio Bianchi; Michele Menegon; et al.

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Open access · cc-by

Abstract

Abstract The Ngezi–Vumawimbi Forest Reserve is the largest remaining patch of natural vegetation on Pemba Island, Zanzibar, Tanzania. In 2024, in collaboration with the Department of Forestry, Ministry of Agriculture, Zanzibar, we conducted a baseline biodiversity survey of animal and plant communities. Preliminary results reveal previously unrecognized plant diversity, including species likely new to science that are currently under study. We confirmed the presence of endemic and threatened plant species, and recorded populations of species not previously reported on Pemba Island. We also confirmed the presence of a small population of blue duiker Philantomba monticola , currently under threat from poaching. One of the areas richest in plant diversity is designated for development of a new tourist resort. This would replace most of the Vumawimbi evergreen coastal forest, home to a unique forest type in continental Africa dominated by Intsia bijuga .

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 5

Observationobservedoriginal resultmeasured

Claim · model-written summary

The survey revealed previously unrecognized plant diversity, including likely new species.

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plante0
Outcome
previously unrecognized plant diversitye0

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e0

“Preliminary results reveal previously unrecognized plant diversity, including species likely new to science that are currently under study.”

✓ located verbatim in the source · abstract, characters 305–444 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The survey confirmed endemic and threatened plant species.

Taxon
plant speciese0
Outcome
presence of endemic and threatened plant speciese0

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e0

“We confirmed the presence of endemic and threatened plant species”

✓ located verbatim in the source · abstract, characters 445–510 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The survey recorded species not previously reported on Pemba Island.

Taxon
speciese0
Outcome
populations of species not previously reported on Pemba Islande0
Setting
Pemba Islande0

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e0

“recorded populations of species not previously reported on Pemba Island”

✓ located verbatim in the source · abstract, characters 516–587 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

An area rich in plant diversity is designated for a tourist resort.

Taxon
plante0
Outcome
areas richest in plant diversitye0

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e0

“One of the areas richest in plant diversity is designated for development of a new tourist resort.”

✓ located verbatim in the source · abstract, characters 719–817 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Vumawimbi evergreen coastal forest is dominated by Intsia bijuga.

Taxon
Intsia bijugaIntsia bijugae0
Outcome
dominated by Intsia bijugae0
Setting
continental Africae0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Intsia bijuga
Intsia bijuga · TaxonDenis.prévôt · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Vumawimbi evergreen coastal forest, home to a unique forest type in continental Africa dominated by Intsia bijuga”

✓ located verbatim in the source · abstract, characters 849–962 · show in text ↑