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Gulf of Guinea Expeditions 

April 20, 2012

The Race: Mountains That Glow

Drs. Brian Simison and Tomio Iwamoto and Roberta Ayres and Rayna Bell left early this morning on the TAP flight for home; five of us remain: our two botanists on Principe and three of us here on Sao Tome continue.  It is time for a science update, especially since it is pouring rain as I write, and our biodiversity education mission on the big island is completed for now.

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Last week, and for the first time, Academy scientists collected the top of Pico do Sao Tome. At over 2,000 meters, the peak is remote and can be quite dangerous to ascend in the rainy season, especially carrying equipment. Our guys were able to accomplish this with help from our friends, Andre Reis, Hugo Serodio and Antonio Fernandes. Andre runs Tropic Ventures, a new company that provides various tourist activities including car rentals, water sports, etc but they also take on really hairy missions into the interior of the island. Andre is ex-military (Portuguese) and his company, equipment and skills are very, very good.

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After a postponement due to the rains, Jim Shevock, Miko Nadel, and our photographer Andrew Stanbridge made two-day ascent, collecting all the way.

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Those who know Jim Shevock, the Academy’s moss expert, will not be surprised to learn that he went nuts. I have no idea how many moss specimens he got nor how many are new, but to say he was enthusiastic upon their return would be a gross understatement.

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But the neatest discovery was made by Miko Nadel, our lichen grad student from San Francisco State.  Sitting and eating dinner in the darkness, Miko looked down and thought he saw Andrew’s wristwatch on the ground, glowing at his feet. What he soon discovered was not Andrew’s watch but a patch of  bioluminescent mushrooms!

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Miko’s graduate advisor, Dr. Dennis Desjardin, a world authority on mushrooms, was with us on GG II and GG III and made the first comprehensive survey of both islands. But , curiously, Dennis (a Fellow of CAS) has recently been doing cutting edge research on bioluminescent mushrooms! So I waited until Dennis gave his OK, before posting Andrew’s images of these remarkable fungi. As usual, we will not know what all this means until we return to CAS for analysis. That is how science works.

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Rayna Bell’s mission was to examine the possible hybridization between the Sao Tome giant treefrog, Hyperolius thomensis and the oceanic treefrog, H. molleri.  We have had genetic and phenotypic hints that this might be happening for some time now.  Rayna’s PhD thesis at Cornell is on the evolution of sexual dichromatism in African treefrog species.

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It looks as though hybridization is indeed going on between the two species at about 800 to 900 meters. Rayna was able to get samples of the giant frog at 1400 meters and then sampled “downhill” at various elevations to nearly sea level, in oceanic treefrog territory.  We had great help from Joao Pedro Pio, a young Portuguese friend who is working on the endemic maroon pigeon; lucky for us, he loves adventure and frogs.  Rayna is tireless, bright and fun to be with; but among us bush herpetologists, the real test is how one does in the boonies. She is wonderful; I was proud to have her along with us.

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And by the way, last night (Rayna’s last), she and Andrew visited the “magic tree” where we have always found the giant treefrog.. they came in about midnight, and told me that as they sat next to the tree, waiting for frogs, the entire forest floor around them was aglow!

It is still raining and outside my door, a Sao Tome prinia is hopping around in the bushes; I will let Andrew’s pictures speak of Tomio Iwamoto and Brian’s adventures in Micoló catching mudskippers and pipefish.

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The Parting Shot:

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all photos by Andrew Stanbridge

PARTNERS

We gratefully acknowledge the support of the G. Lindsay Field Research Fund Hagey Research Venture Fund of the California Academy of Sciences, (GG I, II), the Société de Conservation et Développement (SCD) and Africa’s Eden for logistics, ground transportation and lodging (GG III-V), STePUP of Sao Tome http://www.stepup.st/, Arlindo de Ceita Carvalho, Director General, and Victor Bomfim, and Salvador Sousa Pontes of the Ministry of Environment, Republic of São Tomé and Príncipe for permission to collectexport specimens for study. Special thanks for the generosity of private individuals who have made the GG III-V expeditions possible: George G. Breed, Gerry F. Ohrstrom, Timothy M. Muller, Mrs. W. H. V. Brooke, Mr. and Mrs. Michael Murakami, Hon. Richard C. Livermore, Prof. & Mrs. Evan C. Evans III, Mr. and Mrs. Robert M. Taylor, Velma and Michael Schnoll, and Sheila Farr Nielsen; GG VI supporters include The Herbst Foundation, The “Blackhawk Gang,” the Docent Council of the California Academy of Sciences in honor of Kathleen Lilienthal, Bernard S. Schulte, Corinne W. Abell,John and Judy Sears, John S. Livermore and Elton Welke. Logistics and lodging for GG VI (Omali Lodge and Bom Bom Island) were kindly provided by HBD.

Our expeditions can be supported by tax-free donations to “California Academy of Sciences Gulf of Guinea Fund”.


10 Comments »

  1. A GREAT report and special thanks for the wonderful quality of Andrew Stanbridge’s photos — they keep getting better and better.

    Comment by Bruce Potter — April 20, 2012 @ 10:08 am

  2. Thanks, Bruce42! Your comments especially mean a lot to us. regards from Henrique42

    Comment by bob — April 20, 2012 @ 10:59 am

  3. Love reading these – can’t wait for the next update!

    Comment by Corlis Schneider — May 17, 2012 @ 2:45 pm

  4. coming soon, I hope, Corlis. waiting for more photos.

    Comment by bob — May 17, 2012 @ 2:45 pm

  5. I love this research. I have always liked the idea of designing a phosporecent garden exhibit. It might be something the Academy is interested in.http://biosarch.wordpress.com/2009/11/07/thermochromatic-sustainability-phosphorescent-fungi-gardens-and-booze-belching-synthetic-biology/ . You might also like my recent exhibit at the Field museum in Chicago http://biosarch.wordpress.com/2012/05/27/natures-toolbox-biodiversity-art-and-invention-show-features-dissipative-system-by-charles-lee-2/ Please feel free to contact me if you would like to discuss further

    Cheers,

    Charles Lee

    Comment by Charles Lee — June 4, 2012 @ 10:26 am

  6. Thanks, Charles… the bioluminescent ‘shrooms came as a rather major surprise to us, having been creeping about in the forest at night off and on for 12 years. One of our former field compadres is Dr. Dennis Desjardin (GG II and GG III) who is involved in this field in a major way. He is a Professor at San Francisco STate U. and I suggest you contact him.
    thanks again for the comment.

    Comment by bob — June 4, 2012 @ 11:00 am

  7. Great! lets hope very few humans ever go near there again!

    Comment by jim — June 4, 2012 @ 1:35 pm

  8. I wish that were the case, but it is not likely, given human population growth in general and likely development on the islands in particular… Our job is to let the islanders know what they have so that they can at least make informed decisions down the road… thanks for the comment.

    Comment by bob — June 4, 2012 @ 2:10 pm

  9. Interesting! Mushrooms are cool!

    Comment by Mike — June 4, 2012 @ 2:27 pm

  10. That they are, and over 30% of them on the islands are not yet known to science

    Comment by bob — June 11, 2012 @ 12:36 pm

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