Endangered | GVI Kenya

Green Turtles Return To Nest In Mpunguti Island After Seven Years!

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

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A Real Welcome Back

Category: Cetacean research, Coastal Forest, Colobus, Humpback whales, Primate Research, Shimoni Forest, Southern Banded Snake Eagle | Date: Oct 09 2009 | By: gvikenya

Well hello everyone!

First of all, apologies for the lack of blog action over the last few weeks or so. We have had a month long break in research, and all of us here at GVI have had a well deserved holiday! We’re back now, for another 3 month research period that will bring us up to December.

We’ve kicked off with an amazing first week for both the marine and terrestrial research programs, with plenty of exciting sightings. I’ll begin today with a bit about the terrestrial action, and then will fill you all in tomorrow about our humpback whale sighting on marine!

Wednesday saw the first exciting sighting for one of the groups in the forest. We were on transect 6 (our northern most transect) doing a primate community survey. We had stopped to observe two troops of colobus monkeys that were having a verbal disagreement. The two dominant males were producing a barrage of croaking roars, aimed at each other. Male colobus monkeys have an enlarged larynx which allows them to produce this sound – a territorial vocalisation. It is an awesome sound to hear, and we were standing in the middle of these two going all out!

As we were watching the colobus, a huge shadow passed over us as gazing upwards we were presented with a spectacular view of a southern-banded snake eagle! It had obviously been disturbed by the noise, and flew so low over our head we got a perfect look at it, allowing for a 100% identification. We are all trained on the identification of the rare, threatened or endangered bird species in Shimoni forest, specifically for opportunities such as this.

(Stevenson, Fanshawe 2004)

The southern banded-snake eagle is a threatened species, and we have only sighted it a few times over the last year. It is a stunning eagle, and we were all gibbering with excitement for hours afterwards!

(Stevenson, Fanshawe 2004)

We have a bunch more exciting sightings from the rest of the week, but these shall have to wait until we’ve told you about the whale tomorrow! We are very glad to be back, and look forward to getting into our blog again, to keep you all up to date with the progress, sightings and happenings on the beautiful south coast of Kenya.

Until tomorrow!