GVI Kenya

Category: Kisite Mpunguti MPA, Turtles, mpunguti island | Date: Oct 21 2009 | By: gvikenya

Around 2000 years ago, trade in sea turtle products was observed in the Red Sea and East Africa region and although trade in ambergris and ivory occurred, tortoise and turtle shell was the most commonly mentioned product.  (Jack Frazier, Proceedings of the Western Indian Ocean Marine Turtle Conservation Workshop, Mombasa, 2005). All five species of Indian Ocean sea turtles are considered to be endangered and can be found in Kenya. Green turtles (Chelonia mydas) are reported to nest throughout the coastline but although there are some green turtle nests confirmed in the nearby area of Funzi Island, sea turtles haven’t laid their eggs in the KMMPA (Kisite-Mpunguti Marine Protected Area) for at least seven years.

So it was with great joy that last week GVI Kenya heard the good news about a green turtle visiting the white sandy beach located in the Lower Mpunguti Island. Lily, from Coral Spirit Restaurant, located in Wasini village, shared with us the pictures she took while she was visiting the island.

Green turtle arriving in Lower Mpunguti Island in September 2009 (photo by Lili Angel).
This is an amazing happening in this Marine Protected Area, and will hopefully contribute to the conservation efforts GVI and its major local partner KWS (Kenya Wildlife Service) are putting in place in the area. The islands of Mpunguti are known to support an important population of coconut crabs, nesting sites to African fish eagles, and its surrounding waters are frequently visited by Bottlenose and Humpback dolphins, as well as Hawksbill and Green turtles that feed on sea grass and algae. Both local fishermen and KWS rangers still recall the days when the turtles came to lay eggs on the Lower Mpunguti Island, the only sandy beach available for setting up the nest.  It has been almost seven or eight years since the last turtle arrived on the Lower Mpunguti Island.

 Female Green Turtle preparing the nesting site, throwing sand with her flippers (photo by Lili Angel).

Green turtle leaving the beach, returning to the sea (photo by Lili Angel). 
Green turtles typically live about 45 to 59 years. Given that a female nests in six or seven of those years and lays about 330 eggs each nesting season, she will produce 1900-2300 eggs in her lifetime. Factoring in natural predation, fungus infection of nests, and other embryo failure rates, one can expect each healthy female to produce 1000-1900 hatchlings (Spotila, James R. Sea Turtles, 2004). This information emphasises the importance of a single nest in this region. Although this turtle did not lay its eggs, she might go back to the nesting place or other turtles might look for this place as an option to nest. The next crucial step in this process is to take management actions in order to protect the nesting area and recognize it as a non-disturbance place.

Nesting site attempt (photo by Lili Angel)
The historic decline of green turtles is one of the most cited and best documented conservation issues. Its population has declined 50-70% since the 1900’s and they are recognized internationally as endangered by the World Conservation Union (IUCN) and are protected in the Appendix I of the Conventional on International Trade in Endangered Species (CITES) and in Appendix I and II of the Convention Migratory Species (CMS).

The Kenya Sea Turtle Conservation Committee (KESCOM) was established to complement government commitment to addressing global concerns for marine turtle population decline. GVI works closely with KESCOM in sea turtle conservation efforts, through research, education and capacity building activities such as training in biology and ecology of sea turtles. The data and the pictures collected in our study area (KMMPA) are shared with this organization in order to recognize and protect important foraging, mating and nesting areas for sea turtles. The ultimate goal is to restore green turtles to population levels at which they can fulfil the ecological roles they performed in the past.

 Ines Gomez

Tags: , African Fish Eagle, algae, ambergris, biology, bottlenose dolphin, capacity building, coconut crab, conservation issues, Convention Migratory Species, Conventional on International Trade in Endangered Speci, Coral Spirit Restaurant, East Africa, ecology, education, embryo failure rates, endangered, fishermen, fungus infection, Funzi Island, global conscerns, hawksbill turtle, humpback dolphin, indian ocean, ivory, Kenya, Kenya Sea Turtle Conservation Committee, Kenya Wildlife Service, kisite mpunguti marine protected area, KWS rangers, Lower Mpunguti Island, management actions, natural predation, Red Sea, research, sea grass, sea turtles, tortoise shell, turtle shell, Wasini Village, World Conservation Union

No responses yet

Category: African Fish Eagle, Coastal Forest, Colobus, Primate Research, Primate census, Shimoni Forest | Date: Aug 04 2009 | By: gvikenya

Today will be the first of a two part update on some exciting research going on in Shimoni Forest.  We are attempting to build on work previously done in 2001 by Julie Anderson and then in 2007 by GVI.  We are doing a colobus census of the whole forest!

Marta is a volunteer here with us for three months and is currently working towards her masters in environmental modeling, monitoring and reconstruction.  She contacted us asking if she could use her time here to do the field-work for her project in the forest, consisting mainly of a colobus census – we welcomed her with open arms!

 Preparing to synchronise watches

We timed the census for when we had the most number of people on the mainland, and managed to get a keen group of 15 people fired up and ready.  To do the census we require groups to conduct what is essentially a primate community survey along all of our regular transects, plus groups moving through the forest in between the transects following compass bearings, so a group every 100 metres.  Unfortunately our GPS’s do not work in the forest due to poor satellite coverage, so we had to devise a cunning system of counting paces and regular check points coordinated using mobile phones (on silent of course!), to ensure we were all moving through the forest at a similar pace. 

 The team heading in

In an ideal world, you would have enough people to do the entire forest in a single day, leaving you with a ‘snapshot’ population count.  We don’t have enough people so are having to do it over two days.  For those groups traveling between our regular marked and cut transects, it was pretty rough going – there was plenty of crawling through thickets and fighting through thorns.  However our sense of adventure and the belief in the value of the work prevailed, and lots of smiling faces headed back to base.

 Getting through one of the many thickets!

During the day five groups of colobus, ten groups of sykes and one group of yellow baboon were sighted.  Some of the other casual observations included a pair of zanj elephant shrews, hornbills, African fish eagles and lots of red bellied coastal squirrels!

One of the sighted colobus 

We’re all tired, but looking forward a second day out in the forest.  We really can’t wait to see the results and compare them with the previous years.  I’ll hopefully get a post out letting you all know how it went!

Tags: African Fish Eagle, colobus monkey, hornbill, Primate census, Primate Research, sykes monkey, yellow baboon, zanj elephant shrew

No responses yet

Category: Cetacean research, Dolphins, Kisite Mpunguti MPA, Turtles | Date: Jan 29 2009 | By: gvikenya

It doesn’t happen as often as I’d like with so much else going on but yesterday I joined the marine research team, 6.30am departure aboard our research vessel ‘Lampard’, on calm waters with the rising sun to warm us…

I take the tiller, captaining the boat east out of the Wasini channel, the rest of the team assume positions for dedicated watch. Passing the coastal forest of Shimoni I spot a colobus in the canopy and an African Fish Eagle… but today is the marine research programme, and it’s dolphins and turtles that we search for.

Rounding the south-east corner of Shimoni peninsula we enter Funzi bay, hoping to spot Indo-Pacific humpback dolphins that favour these near-shore habitats. No sign of them today. We pass a green turtle, but sadly a recently dead one floating at the water’s surface. No obvious cause of death, but this time of the year, during the kaskazi winds (the NE monsoon winds), seems to bring a peak of turtle mortalities each year.  Much of Funzi bay is shallow and doesn’t leave us much room to manouvre so we turn the boat around and head south, towards the continental shelf and open water. A flock of terns dives persistently at the water’s surface but the fish shoal they target has gone unoticed by any dolphin.

A more distant splash and a suspected dolphin sigthing, something dark and rounded surfacing. Half-way there before it becomes evident it’s another dead turtle bobbing at the surface. A huge one this time, a hawksbill, it’s been dead for longer and given the size it reached, somehow a sadder loss as we circle around it and continue our route south.

Sergi, our marine research officer takes over from me at the stern as I join the rotation of observers up front, each with our 45 degree field of view to patrol. Tom calls out a potential dolphin far ahead, an apparent leap and splash, Sergi steers us toward the point on the horizon and we keep scanning the surface. We rotate positions, both Tom and I looking forward, he sees something again, but is disappointed when there’s no following dorsal fins or repeat splashes.

Still we head further south, further from the shore and are rewarded 15 minutes later by 4 dorsal fins breaking the water’s surface ahead. They approach the boat to ride the bow and a further 3 dorsal fins join them. We expect them to be Indian Ocean bottlenose dolphins out here, but the small triangular fins, the smaller torpedo-like bodies and the long narrow beaks all point to something different. Three tone body colouration as they surface confirms we have found a small group of spinner dolphins.

Sergi hands me the camera, I try to get photos of the dorsal fins of each one as they sruface to breathe. It’s not as easy as it seems it should be. Unpredicatable quite where and when they will surface as they dart across the bow just below the surface, the angle has to be right, the sun behind, sharp focus… and you have to be quick. Sergi uses the time to talk the team of observers through the dolphins’ behaviour. Close to the surface, regular slow shallow surfacing, no obvious directional travel; they were probably resting. We leave the small group and within minutes an apparent lone individual further away leaps from the water, an acrobatic spin that gives them their name. Then 10 dorsal fins surface to our right. We barely get through counting them when at least 20 fins appear on the right. Our group of 7 was actually part of a larger group, in the end we estimate 40 to 50 individuals.

Spinner dolphins are thought to be seasonal visitors to this part of the Kenyan coast, possibly crossing the channel from Pemba, following the food with the kaskazi. In previous years we have recorded them between mid-February to mid-March, in large active groups (up to and over 200) off the shelf, south of the MPA. This kaskazi we had one sighting in December, and then last week. We do not think that this season represents any ‘break from the routine’ but more likely that our new research vessel gives us a higher, clearer viewing platform, and survey routes take us further from shore so we simply see more. The real exctitement is that we are now understanding more about these seasonal visitors; their ’season’ is longer than we first thoguht, and they are using habitats east of the MPA for resting suggesting they may be here for more than just quick foraging forays. Ironically, the fact that they are consistenly recorded outside of the marine protected area is not of too great concern. They are free from disturbance by the dolphin-watching tourist boats and in the absence of commercial fishing activities are not threatened here by high levels of accidental deaths from by-catch that plague some of their open-ocean counter-parts through industries such as tuna fisheries which are yet to be quite as ‘dolphin-friendly’ as we might be lead to believe.

I’ll keep you posted throughout our ’spinner season’…

Tags: African Fish Eagle, Colobus, dolphin research, green turtle, hawksbill turtle, Kisite Mpunguti MPA, spinner dolphin

One response so far