Biodiversity | GVI Kenya

The Frog Blog – Another Amphibian Species in Shimoni’s Coastal Forest

Category: Amphibians, Coastal Forest, Shimoni Forest | Date: Apr 28 2009 | By: gvikenya

Last week saw the rainy season begin to creep in. The first few days were fairly tame, with only a few light showers. But towards the end of the week, the dark clouds rolled in off the sea and the true African rains started. This can make some elements of our forest research slightly more challenging, and some – like our primate community surveys – impossible. Either way, its sodden clothes and wet boots all round.

There are however, some advantages to the rains. Not only does the vegetation, fruits and flowers all spring back into life, but the forest sees an explosion in diversity and abundance of amphibians!

We’ve seen several very cool frogs this week, but the highlight has been what we believe to be a Fornasini’s spiny reed frog (Afrixalus fornasini). It is a beautifully patterned reed frog that is usually associated with ponds where reeds and sedges are growing. It has been found in Kenya southward through eastern and southern Tanzania, including the low slopes of the Usambara, Uluguru and Udzungwa mountains, south to Malawi, Mozambique, and north eastern South Africa. Another common name for this frog is the greater leaf folding frog, due to a rather clever way the female protects its eggs. About 80 eggs are laid on a reed leaf, starting at the tip, the edges of which are then folded toward one another and glued together, to defend against predators. This species also has skin that contains small amounts of substances called tachykinins, which are responsible for upsetting the heartbeat and serve to detract mammal predators.

It is a beautiful and very cool little frog, and we look forward to finding more and more as the rains continue!

Matt

Tags: amphibian, biodiversity, Coastal Forest, conservation, reed frog, research

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Biodiversity in the Forest, Bush Babies in the Kitchen & Bush Pigs at the Bar!

Category: Birds, Coastal Forest, Colobus, Elephant Shrew, Shimoni Forest, Small mammals, Uncategorized, bush baby, chameleon | Date: Jan 21 2009 | By: gvikenya

It was only a matter of days after the arrival of our expedition members, before we were back in Shimoni’s coastal forest and underway with our research programme. The beginning of 2009 did not disappoint… within just the first week it felt like we’d seen an expedition’s worth of biodiversity. Heading out at 5.30am on bird surveys was made more than worthwhile with groups of colobus seemingly in every tree above. With the onset of the dry season, the leaves are falling and we were treated to clear views of colobus crashing through the branches and Syke’s monkeys scampering below.

The bird surveys delivered a hatrick of hornbills - crowned, silvery-cheeked and trumpeter. Elephant shrews were in evidence every day, hurtling over the leaf litter as were the small suni antelope. The night walk provided everyone with a clear view of a suni as it stood in our torchlight for a minute before disappearing in to the bush and bush babies too, their bright orange reflective eyes giving them away. However the most exciting ‘cameo’ of the week was a little chap that we hadn’t recorded since our first sighting nearly three years ago… an impressively cryptic species in the dry leaf litter, it seems remarkable that we should see it at all, and very satisfying to have a short-tailed (or bearded) pygmy chameleon make a reappearance on our casual observations database.

However, it seems that we didn’t need to go to all the effort of 5.30am departures and hot sweaty treks to the furthest reaches of our transects to enjoy Shimoni’s rich wildlife… we didn’t even need to leave the kitchen. Having quietly cursed rats for leaving half chewed bananas on the kitchen floor, I was proven wrong when two brown bundles of fur climbed through the window. The short-eared bush babies have returned every night since, and I can happily report that mangoes make for a suitable alternative to bananas for our uninvited dinner guests. And just when we thought our forest week was over, and we could relax with a cold beer at Smugglers, the biggest surprise of them all dropped by… a bush pig behind the bar!