Expedition Angano – Mapping the Impact of Forest Fragmentation in Northern Madagascar

When: December 2015

Where: North of Bealanana, Sofia District, Madagascar.

What: Herpetology surveys

Who: UK scientists, Malagasy Institute for Conservation and Tropical Ecology (MICET), University of Antananarivo and University of Antisiranana

Status: Completed

Links: Expedition Website


In December 2015 we led an international research expedition to a remote forested mountain in Northern Madagascar. Against a backdrop of deforestation we’re aiming to study the processes that threaten species in fragmented forests, as well as supporting the development of young Malagasy scientists.


Madagascar possesses unparalleled levels of biodiversity and endemism, yet has lost around 80-90% of its forest cover.

Expedition Anagano 2015 - Expedition Base Camp

One of the problems of deforestation is that it doesn’t just reduce the total area of surviving forest, it also drastically increases the proportion of forest edges. Edges are frequently hotter and drier, with greater human disturbance, hunting, wind damage and more. All in all, edges are very different habitats, but we don’t know how that impacts the species that live in the forest. Crucially, we don’t know how ‘deep’ edge effects occur: a.k.a. how bad the effect is.

In a country where 90% of surviving forest is estimated to be within 1 kilometer of an ‘edge’ then this is critically important research. We aim to study these edges using reptiles and amphibians as indicators, in order to find out which species are resilient, and which are not. Species that can’t survive on edges could be at far greater risk of extinction than we realise (and some may still be unknown to science!).

In a practical sense, with much conservation attention now focused on forest regeneration and habitat corridors, we hope to be able to assess the value of smaller fragments which have large proportions of edge habitat. Thus, we could prioritize those fragments which have the potential to support viable relict populations of rare species.

Expedition Angano 2015 - Expedition Base Camp


North of Bealanana, Sofia District, Madagascar.

Approx region 14°26’08″S 48°42’11″E


  • To assess how different species groups respond to forest edges.
  • To compile an inventory of reptile and amphibian species present in the region, with voucher specimens deposited in appropriate collections.
  • To provide training and field experience to local Malagasy students.
  • Produce a short documentary on the project.


Forest fragmentation is a problem right around the world, yet the impact of ‘edge effects’ is hugely understudied. Hopefully, we can help contribute to understanding these, whilst supporting the training of the next generation of young Malagasy scientists.


Expedition Leader: James Borrell (UK)
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Logistics Officer: Lawrence Ball
Science Officer: Mark Scherz
Filming and Photography: Duncan Parker
GIS and Data Specialist: Thom Starnes
Chief in-country Collaborators: Jeanneney Rabearivony, Marius Rakotondratsima & John Zaonarivelo


The expedition collaborated with MICET (Malagasy Institute for Conservation and Tropical Ecology), University of Antananarivo and University of Antisiranana

Expedition Angano 2015 - Expedition Base Camp


Expedition Budget: £15,000

Income from Grants: £8,000
Income from Crowdfunding: £1,400
Personal Contributions: £5,500
Value of loaned equipment: £700


Zoological Society of London
Royal Geographical Society
Scientific Exploration Society
Cadogan Tate
Royal Meteorological Society
Queen Mary University of London


Visit www.expeditionangano.org

Or connect on Facebook or You Tube



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