The Race: More Bricks in the Wall of Biodiversity

Laguna Azul, an exquisite bay in northwestern São Tomé, with hanging Baobab seed pod. Weckerphoto, GG III.

The scientific name of each living species is like the handle on a drawer, enabling biologists to pull it open and learn all that has been observed and written about that species. These names, usually Latinized or in Greek, are the most basic building blocks in any attempt to describe the Earth’s natural habitats and ecological systems… literally the first step in the exploration of unknown or poorly known habitats. First question asked: what’s living there? If no one has noted a species before, we communicate its existence by describing it and giving it a name..

Our first expedition to the islands of São Tomé and Principe was in 2001, and the first new island species our scientists described was a beetle (below). Although it was collected high in the mountains on São Tomé during our first expedition, the new name was actually published four years later.

Straneo seligmani Kavanaugh, a new carabid beetle from near Macambrara, São Tomé at about 1100 m. Straneo is an endemic genus; its two known species occur only on this island..

It takes a lot of time to recognize and describe a new species; after all, the scientist has to know all of related species that the new species is not! This new beetle was named for Ned Seligman, Director of STeP UP, an island NGO. We have worked closely with STeP UP since the beginning in 2001.

Another special insect collected on our first expedition was an ant species new to science; it was described a few years later (below).

Tetramorium renae Garcia, Fischer & Peters from Bom Sucesso, São Tomé

During the past 17 years, our teams have undoubtedly collected many new insect species on São Tomé and Príncipe. But it takes a lot of time for entomologists to sort through our nearly two decades of island specimens.

The bryophyte flora (mosses, liverworts and hornworts) was poorly known before tireless Jim Shevock joined us on several recent expeditions. The new moss species described by Jim and his colleagues (below) is but the first of many awaiting publication.

 

Porotrichium saotomense Enroth & Shevock from São Tomé

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In fact, Jim and his colleagues  such as Dr. Cesar Garcia the University of Lisbon (above) have added 46 mosses, 66 liverworts and 3 hornworts to the flora of the islands so far, suggesting that this group is surprisingly rich these ancient islands .

 

Botanists at work on Príncipe, GG XI. A. Stanbridge phot.]

Lizards are usually a fairly conspicuous part of any environment during both day and night (geckos), so it might be expected that the lizard fauna of the two islands would be well known. Not so; our teams have described one new species and are working on a second.

Principe, 2008

 

Hemidactylus principensis Miller, Sellas & Drewes. Weckerphoto.

This nocturnal gecko of Príncipe Island shares a unique character with its nearest relative, H. greeffii of São Tomé – the absence of the last digit on the thumb (below).

 

Radiograph: Hemidactylus principensis (A), H. greeffii (B)) showing absence of terminal thumb digit.

An additional new species was described a couple of years ago by Dr. Luis Ceriaco of the University of Lisbon. The skink lives on Tinhosa Grande, an islet off the south coast of Principe.

 

Trachylepis adamastor Ceriaco, Tinhosa Grande island.

Several earlier blogs have featured our mushroom work ; in earlier times, there were only about twelve known species on the islands.  Drs Dennis Desjardin and Brian Perry collected more than 200 kinds during GG II and III expeditions, and their analysis of these specimens is ongoing.  

 

The description of Phallus drewesi Desjardin & Perry (above) was the first of the new mushroom descriptions and for obvious reasons, its shape and size received some notoriety- it is the second smallest mushroom in the genus Phallus, and it grows limp.  The publication was featured on a humorous American radio show called “Wait, Wait. Don’t Tell Me!”

Scytinopogon havencampii Desjardin & Perry  of Principe (above) was named in honor of a group of friends who helped fund this particular work. Earlier this year, four additional new species from both islands were described by Desjardin & Perry and just this week,  the same authors published yet another scientific paper in the international journal, Mycosphere. They recognized 31 hitherto unreported fungus species on the islands, and these include ten new ones; three of the new species names commemorate individuals who have helped support our expeditions: Campanella burkeii, Gymnopus rodhallii and G. billbowesii.

Campanella burkei Desjardin & Perry from Principe Island.

 

Gymnopus rodhallii Desjardin & Perry from São Tomé.

Several of our expeditions have included workers studying inshore marine organisms. Then graduate student Dana Carrison-Stone published the descriptions of two new species of barnacles she discovered during dives in 2008 (GG III).

Conopea saotomensis Carrison-Stone, Van Syoc, Williams & Simison. The other new species, C. fidelis, was described in the same publication. Both were collected off Príncipe Island and formed part of the research for her MSc degree]

Carrison-Stone in the field off Príncipe, GG III

Drs Tomio Iwamoto and Luis Rocha have both worked on our Gulf of Guinea expeditions, Tomio since the very beginning in 2001. Luis has led several separate diving expeditions there including GG X in 2016 .

 

 

 

 

 

 

 

 

 

 

Serranus pulcher Wirtz & Iwamoto (above) was described from a specimen Tomio caught by rod and reel off the pier of Ned Seligman’s house on the northeastern shore of São Tomé during GG II. Luis named Sparisoma choati Rocha, Brito & Robertson (below), a new parrotfish from the waters of Príncipe just last year (Rocha phot).

 

Amphibians are not supposed to occur on islands that have never been attached to a mainland source. This point has been made about oceanic islands ever since islands have been studied (see early blogs in this series); for obvious reasons (salt water) the same is true for freshwater fishes. Nevertheless, São Tomé may well be unique in having eight species of endemic amphibians, two of which were discovered and described by members of our Gulf of Guinea expeditions.

Phrynobatrachus leveleve Uyeda, Drewes & Zimkus of São Tomé (above) was discovered to be genetically distinct from its Príncipe relative, P. dispar as early as 2007 by Dr. Josef Uyeda, a two-time expedition member.

A similar situation exists with the very similar small green tree frogs of the islands. Dr. Rayna Bell discovered that the two island populations were actually quite distinct from one another and named the Príncipe species, Hyperolius drewesi Bell, a great honor.

Hyperolius drewesii Bell of Príncipe. Gasparini phot.

Finally another graduate student contributor to our island work on São Tomé and Príncipe is Matthias Neumann of the University of Kassel, Germany. His fieldwork on flatworms (aka geoplanids) of the islands led to the description of five new species in a recent publication. His work is particularly relevant as many of these  strange, brightly colored species are known predators of land snails, and the snail species of São Tomé and Príncipe are more than 70% endemic, found nowhere else in the world.

 Various geoplanid flatworms from São Tomé among which are five new species described by Sluys and Neumann.

We will be returning to the islands once again in November.

Here’s the Parting Shot:

 

 

Rio Porco, at the remote southern end of Príncipe not far from new Scops owl species site (see last blog).  A. Stanbridge phot.

PARTNERS

Our research and educational expeditions are supported by tax-deductable donations to the “California Academy of Sciences Gulf of Guinea Fund*.” We are grateful for ongoing governmental support from the Republic of São Tomé and Príncipe, and especially to Arlindo de Ceita Carvalho, Director General, Victor Bonfim, and Salvador Sousa Pontes of the Ministry of Environment and to Faustino de Oliviera of the Department of Forestry for their continuing authorization to collect and export specimens for study, and to Ned Seligman, Roberta dos Santos, Anita Rodriguez and Quintino Quade of STePUP of Sao Tome, our “home away from home”. GG IX, X and XI were funded in part by a generous grant from The William K. Bowes Jr. Foundation, and substantial donations from Rod C. M. Hall, Mr. and Mrs. Henri Lese, Mr. and Mrs. John L. Sullivan Jr., Mr. and Mrs. John Sears, in memory of Paul Davies Jr. and a heartening number of Bohemian friends. We are grateful for the support of Roça Belo Monte (Africa’s Eden-Príncipe) for both logistics and lodging.

*55 Music Concourse Drive, Golden Gate Park, San Francisco CA 94118 USA

 

 

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The Race: Worth Two in the Bush…. Part II

Note: This blog and the preceding one are dedicated to the memory of our friend Bill Bowes, of the William K. Bowes Jr. Foundation, who graciously lent his personal encouragement to and support for the GG IX, X and XI expeditions. We of the Gulf of Guinea team and the California Academy of Sciences will miss him very, very much.

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The São Tomé weaver (Ploceus sanctithomae] is a forest species known only from the big island. Phot. P. Loureiro.
During Gulf of Guinea IX, two years ago, our education effort was focused on the endemic bird species of both islands; as mentioned before, the bird fauna is hugely important; the two islands have perhaps the highest number of unique bird species by area in the world, 28 endemics/1000km ².

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The São Tomé Prinia. (Prinia molleri). The “Truqui” is found only on the big island and is probably the most common endemic species there (top photo. P. Loureiro.) As we visited the classrooms, each student got a pair of plastic binoculars (they work!), and our booklet that highlights some of the most beautiful species on both islands and their natural history (above, left and right. phots by A. Stanbridge).

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And, expedition patches are given by the teachers to 10 students who do the best work each year. (photo by A. Stanbridge, above)

Our intent is always to instill in the kids a sense of ownership for these species for their uniqueness and beauty: “No one else has these, even on the other island!”  The image below was taken by our senior educator, Roberta Ayres, but it might have been made anywhere little kids play. Regardless, we never preach in our classroom presentations; we present the species of the flora and fauna as rare and beautiful.

Ayers, Nova Moca GG IV

Our Gulf of Guinea Islands project is indeed multiplex, and some of the most interesting scientific discoveries in past years have been made by graduate students in pursuit of higher degrees.

10_Me and Ricardo ringing the Ploceus grandis. This was during a teaching couse we were giving to our field guides. Extiment is noticeable (at least mine)

Recently, Ana P. Coelho (above middle), received her MSc degree in conservation biology from the University of Lisbon; her thesis advisor was our long-time colleague, Dr. Ricardo Lima (left), whose earlier PhD thesis was also based on the island ecology.

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Field assistant Octavio, mist-nettng (A. Coelho phot.)
Ana studied the roles of birds in dispersing seeds on São Tomé.  Some 18 species of birds, all endemic, were systematically mist-netted (above), and ring-banded (below). Their droppings were studied over time to determine what seeds the fruit-eating (frugivorous) species were eating. The field/data collection part of the study was several months in duration.

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Ana banding an endemic  São Tomé scops owl , Otus hartlaubi. (A. Carvalho phot)

Of the 18 species captured and released, nine were frugivorous, and Ana showed that the great majority of seeds they ate were in the fruit of endemic or native plant species.  Some species of non-native plants were ingested and dispersed as well.

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Birds of larger size (and thus larger beak gape) eat larger fruit (above).

This relationship among endemics makes evolutionary sense. We know that the accumulation of genetic (and morphological) change leading to the evolution of new species takes isolation and time. This is as true for the consumer (the birds) as it is for the energy source (the fruit of the plants). So one can suggest that the birds and the seed plants upon which they feed co-evolved over thousands of years. The birds benefit from the fruits of the plants and in turn, the plants’ seeds are carried to distant environments (along with fertilizer) in the bird droppings.

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The São Tomé speirops  (above) is by far the most frequent seed disperser; Ana found this endemic produced 84% of all droppings containing seeds. .

However, it should be noted that in this case, the birds are also responsible for a rather difficult conservation issue. Through seed dispersal of endemic plants, they are contributing to native forest regeneration,  but because they also disperse a number of non-native plant species, the birds are also involved in biological invasion – the spread of alien species..

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Above is an additional endemic predator/prey relationship: a São Tomé house snake ingesting a São Tomé giant tree frog; both species are endemic to the big island. (Matthias Neumann phot. )

Another recent graduate student contributor to our scientific knowledge of Gulf of Guinea biology is Matthias Neumann (below), who recently completed his MSc in biology at the University of Kassel in Germany.

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(M. Neumann phot)

Matthias spent a couple of months in the islands last year collecting and studying geoclads (flatworms), many species of which are known to be predatory on snails.
We have made the point in earlier blogs that these flatworms are potentially very important because the land snail fauna of both islands is over 70% unique, and if these flatworms are recent arrivals, they may pose a real danger to the existence of the endemic snails.  Prior to Matthias’ field investigations almost nothing was known about the island flatworm fauna except for some random observations by some of us working in the forests (see earlier blogs).

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Mathias (left) with field assistant, Lionel; a geoclad feeding on a terrestrial snail (right). M. Neumann phots.
Matthias was successful in completing his degree, and his work has recently been published: Sluys R., M. Neumann, R.F. de Lima, & R, C. Drewes. 2017. Land flatworms (Platyhelminthes, Geoplanidae) of São Tomé: a first account on their diversity, with the description of five new species. Zootaxa 4221 (3): 291–322.

 

Matthias estimates that there at least as many additional undescribed flatworm species on the islands awaiting identification and study.  Two of the species he has discovered so far are definitely snail predators. If these two species are long-time inhabitants of the islands, it is likely they have co-evolved with their snail prey, a situation probably not unlike the endemic bird/endemic plant relationship studied by Ana Coelho. There is so much more to be learned in these islands.

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As Ana’s and Matthias’s photos above suggest, both of these young scholars are born naturalists, interested in a wide range of living species. The images include a freshwater blenny, a freshwater shrimp, a São Tomé house snake and a giant sunbird, all endemic or native to the islands.

The Parting Shot:

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Dr. Cesar Garcia, of Lisbon, working on Principe. Fieldwork is always exhausting, occasionally painful but forever a joy!
PARTNERS
Our research and educational expeditions are supported by tax-deductable donations to the “California Academy of Sciences Gulf of Guinea Fund*.” We are grateful for ongoing governmental support from the Republic of São Tomé and Príncipe, and especially to Arlindo de Ceita Carvalho, Director General, Victor Bonfim, and Salvador Sousa Pontes of the Ministry of Environment and to Faustino de Oliviera of the Department of Forestry for their continuing authorization to collect and export specimens for study, and to Ned Seligman, Roberta dos Santos and Quintino Quade of STePUP of Sao Tome, our “home away from home”. GG IX, X and XI have been funded in part by a generous grant from The William K. Bowes Jr. Foundation, and substantial donations from Rod C. M. Hall, Mr. and Mrs. Henri Lese, Mr. and Mrs. John L. Sullivan Jr., Mr. and Mrs. John Sears, in memory of Paul Davies Jr. and a heartening number of Bohemian friends. We are grateful for the support of the Omali Lodge (HBD-São Tomé) and Roça Belo Monte (Africa’s Eden-Príncipe) for both logistics and lodging.
*California Academy of Sciences
55 Music Concourse Dr.
San Francisco, CA 94118

The Race: A Bird in the Hand…Part I

Principe Island looking south toward Rio Porco, site of the new discovery.  A. Stanbridge phot.

The birds of São Tomé and Príncipe are truly spectacular and by rights should be a major birdwatchers tourist destination.  The island avifauna is probably the best understood of the terrestrial vertebrates and since our research concentrates on poorly known species, our expeditions have never included an ornithologist and the incredible bird life appears only occasionally in this blog.  Recent events require further attention.

Birds have fascinated amateurs and scientists alike from very early on in the history of science; because of this strong and enduring attention, the discovery of new, undescribed bird species is rather infrequent and thus quite exciting.

The Principe scops owl, valley of the Rio Porco. phot  P. Verbelen

After some 90 years of rumors and speculation, Felipe Spina of Fauna & Flora in Santo Antonio and Philippe Verbelen of Belgium discovered there is, in fact, an owl species living on Príncipe Island! It has finally been seen, photographed (above) and recorded by these gentlemen in the remote southern valley of the Rio Porco, in July, 2016.

Scientists know very little about the new owl beyond discovery that it exists. We do know that the call of the little owl is very different from the call of other known scops species.

The Sao Tome scops owl,  Otus hartlaubi. Phot. Hotspot Birding.

But how many owls are there in these rugged, trail-less valleys, and how widely are they distributed on the island? Is it really a new species, genetically distinct from the nearby São Tomé scops owl, Otus hartlaubi? (above) There are three widely distributed species on the mainland, plus two found exclusively in different East African coastal forests (below), and there is another island endemic in the Indian Ocean (Socotra).

Sokoke scops owl, known only from the Arabuko-Sokoke Forest of coastal Kenya.  phot. of red phase by Syczek Brunatny.]

How do the Gulf species relate to other scops owls? These basic questions can only be answered by detailed genetic and morphological examination of a live specimen; future work is being planned and led by Dr. Martim Melo of CIBIO, Porto, Portugal, the foremost expert on the birds of São Tomé and Príncipe. Martim first heard this owlet in 1998 and has been searching for it ever since!

The non-wading bird assemblage of São Tomé and Príncipe may represent the highest level of unique species in the world, by area.  Above is an image comparing the bird faunas of the two Gulf islands with the famous Galapagos, a much larger archipelago in the Atlantic Ocean. The Galapagos are justly famous, but it is interesting to note that the majority of endemic bird species there evolved from a very few colonizers; for instance, the celebrated Darwin’s finches are all each others’ closest relatives.

Principe glossy starling, Lamprotornis ornatus. Roca Belo Monte. Phot. P. Loureiro.

The São Tomé and Príncipe avifauna is much richer in different evolutionary lineages; these range from endemic starlings (above), weavers and an oriole to unique sunbirds, kingfishers and flycatchers.

Sao Tome giant weaver. Phot by. Nik Borrow

Among this rich assemblage are several species that are excellent examples of the phenomena of island gigantism and dwarfism discussed in earlier blogs.  For instance, the largest weaver bird in the world (70+ species) is the giant weaver (Ploceus grandis, above), endemic to São Tomé.  The world’s largest sunbird (Dreptes thomensis, below) is a species also unique to São Tomé.

Sao Tome giant subird.  phot. Fabio Olmos

Sunbirds are Old World, nectar-feeding equivalents of the New World hummingbirds. The two groups are not closely related, but they converge greatly in appearance and behavior because they fill the same ecological niche in their respective geographic areas.

Above, the giant sunbird is shown on the right, together with Newton’s sunbird, itself an endemic species; photo taken after banding by Dr. Martim Melo.  Like the giant hummingbird of the Andes, the giant hummingbird is also drab in coloration.

São Tomé dwarf ibis. phot. Nik Borrow

There are 27 species of ibis, world-wide; the smallest by far is the São Tomé dwarf ibis, (above, Bostrychia bocagei); there is but a single population of these birds living in the remote southern forest of the big island, and they are severely threatened by poaching for food and the expansion of a large oil palm plantation to the south.

Many of the unique birds on the two islands are singletons; i.e. they are the only representative of their group on one of the two islands, with no relatives on the other.

São Tomé oriole, Oriolus crassirostris. 

These endemic flycatchers are also sexually dimorphic]

Among the other endemic species are pairs represented by one closely related species on each island.  When these species are each other’s closest relatives, they are called “sibling species; however, they can be very similar in appearance and behavior because they fill the same ecological niche on each island- not because they are each others’ closest relatives.

 

 

Each island has a thrush species; the Principe thrush (right), newly discovered, is obviously similar and related to that of the big island, but they are not necessarily each others’ closest relatives.  Dr. Melo has determined by genetic study that their ancestral colonizers arrived at very different times from the mainland. Recall that Principe is geologically twice as old as Sao Tome. If the ancestor of the thrush on Sao Tome dispersed from Principe, they would be siblings, but as Dr. Melo has shown, both species descended  from mainland ancestors at different times.

Many other intriguing bird pairs are found on the islands.

 

 

 

 

 

 

 


A number of much earlier workers considered some of the islands’ bird species so distinct that they deserved their own generic names, and traditionally, there were seven unique genera recognized on the islands (including the giant sunbird, and Speirops, above).   Dr. Melo has shown that even though some of these are dramatically different in appearance from relatives, this similarity is the result of relatively recent selection pressures and genetically, they should still be included within pre-existing genera.

END OF PART I

Here’s the parting shot.

The 2016 education team at Bom Bom island bridge, PrÍncipe Id.: Dr. Maria Jeronimo (left), the author,  and Roberta Ayres]

Note: This blog, Part II to follow, is dedicated to the memory of our friend Bill Bowes, of the William K. Bowes Jr. Foundation, who graciously lent his personal encouragement and financial support to and for the GG IX, X and XI expeditions.  We of the Gulf of Guinea team and the California Academy of Sciences will miss him very, very much.

 

THE RACE: Reflections on Awareness

In an earlier blog, I described the mission of our biodiversity awareness program in the island primary schools here. We all participate but the group activities are coordinated by Roberta Ayres and assisted by our local colleagues from an NGO called STeP UP (founded by an old San Francisco friend of mine, Ned Seligman, who lives here). The classroom materials we use are designed each year by a committee at the California Academy of Sciences, headed by Roberta Ayres.  These materials are given to the students and teachers. We visit about 2000 students each year in pre-selected schools on both islands.

All of the images below are by our photographer Andrew Stanbridge, veteran of six Gulf of Guinea expeditions. I think they largely speak for themselves.

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Roberta (“Grande”) dos Santos, co-Director of STeP UP.

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Danqua (stripes) and Roberta on Sao Tome streets. Coastal waters poster distribution.

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Anita Rodrigues with Camilla, STeP UP office.

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Danny, Bob and Camilla, STeP UP office.

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Porto Real School, Principe Id.

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The coastal waters booklet, with S. Edgerton’s centerpage artwork.

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Dr. Maria Jeronimo, Roberta ” Pequena”Ayres and Bob, school presentation of posters

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Sean Edgerton’s centerfold in the booklet.

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And each fourth grader received a magnifier, with instructions on  use.

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Roberta Ayres is the coodinator of our biodiversity awareness education program.

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School yard of the largest primary school on Sao Tome, our traditional starting place.

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Ellen Swanborn-Von Hagen of Africa’s Eden joins us on Principe

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A familiar bar in Santo Antonio, Principe Island.

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Here’s the  PARTING SHOT:

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Andrew Stanbridge, our indomitable photographer, modeling Africa’s largest tree Principe Id.  GG IX.

PARTNERS

Our research and educational expeditions are supported by tax-deductable donations to the “California Academy of Sciences Gulf of Guinea Fund.”*  On the islands, we are grateful for ongoing governmental support, and especially to Arlindo de Ceita Carvalho, Director General, Victor Bonfim, and Salvador Sousa Pontes of the Ministry of Environment of the Republic of São Tomé and Príncipe for their continuing authorization to collect and export specimens for study, to Faustino Oliviera of the Department of Forestry, and to Ned Seligman, Roberta dos Santos and Quintino Quade of STePUP of Sao Tome, our “home away from home”.  GG XI has been funded in part by a generous grant from The William K. Bowes Jr. Foundation, and substantial donations from Rod C. M. Hall, Mr. and Mrs. Henri Lese, Mr. and Mrs. John L. Sullivan Jr., Mr. and Mrs. John Sears, and a heartening number of “Coolies”.  Once again we are deeply grateful for the support of the Omali Lodge (HBD-São Tomé) and Roça Belo Monte (Africa’s Eden-Príncipe) for both logistics and lodging, and to the Príncipe Trust for partial sponsorship of our ongoing primary school education program.

*California Academy of Sciences
55 Music Concourse Dr.
San Francisco, CA 94118
USA

THE RACE: At Play in the Fields of a “Lost World”

THE RACE: At Play in the Fields of a “Lost World”

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“Jita,”the Principe house snake (above, Lamprophis); the Sao Tome form is striped, not blotched.  They are different species from each other and from mainland relatives, and we are in the process of describing them.

As I began to write this, Drs Lauren Esposito and Rayna Bell were spending their second rain-drenched night camping in the rugged southern end of Príncipe, accompanied by biologist Felipe Spina of the Príncipe Trust and local guide, Balô.  Like the botanists a week and a half ago, they traveled by boat (there are no roads in the southern two-thirds of the island) to the Rio Porco, which drains an isolated valley where a likely new species of Scops owl was recently discovered by Felipe. It had been pouring rain since they left, and we had just learned (by lucky text) that they proceeded to the top of Pico Mesa! So for the first time ever, we have had two different teams exploring this remote and difficult “lost world” on Príncipe Island. The team has since returned, safe and sound, and we are now back on São Tomé-the big island

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The Belo Monte boat; Pico Mesa in the background.

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Left, Filipe Spina, Principe Trust biologist with Rayna Bell.

Lauren is a relatively new Academy faculty member of our Entomology Department who specializes on the biology of scorpions.  But given that only one species has ever been recorded here (by us on São Tomé in 2001), she is donning the cloak of general arachnologist, sampling spiders, amblypigids and other poorly known island invertebrate faunas. She thus joins the ranks of earlier expedition members such as Drs. Charles Griswold, Joel Ledford, and Tamas Szuts of Hungary.

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Latrodectus

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Heteropoda

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Leptopholcus

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Above is Isometrus, the only scorpion species known from the island; this specimen is from the basalt cliffs of the northwestern part of the island. Scorpions glow under ultraviolet light.  Lauren has also been very involved with our education project; she brings the experience of having founded and continues to run an extensive similar program in the West Indies.

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Rayna Bell (above) has returned as a team member for the  fifth time. After completing her postdoctoral appointment at the University of California, she became the new curator of herpetology at the Smithsonian Institution, our U.S. National Museum.

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Among her recent discoveries is that the green tree frog of Príncipe (above) is quite  different from its similar counterpart on São Tomé; the scientific description will be published this month and will bring the amphibian biodiversity of the islands to eight endemic species! Rayna is also studying development (egg mass below)

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The new green tree from of Principe Island.

.Dr. Bell is currently working on understanding more about the biology of the enigmatic Príncipe giant tree frog, Leptopelis palmatus. Prior to our 2001 expedition this largest of African tree frogs was known only from a single female specimen collected over 100 years ago. During our first work on Príncipe, we were able to collect and describe the much smaller males of this species but even to this day, the larvae (tadpoles) remain unknown. As can be seen above, the highly variable colors and patterns in this species are very unusual; they exhibits  a high level of color and pattern polymorphism. The reason for this is unclear;  in such cases, this variation is usuall due to  natural selection for crypsis (camouflage), mate recognition or sexual dichromatism. We have no evidence that the frogs are particularly distasteful or toxic to predators; i.e., warning or “aposematic” coloration.

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Also, adult tree frogs of this species appear to attain sexual maturity at varying sizes; reproductively mature males and females on the mainland usually attain a fairly narrow range of size.  Early indications suggest this is probably not the case with the giant tree frog of Príncipe, where mature females appear to vary in size within 20-30mm.

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Maria Adelina Jeronimo has returned with us for her second expedition, having completed all but her thesis defense for her PhD at the New University of Lisbon (Gulbenkian Institution).  She is an expert on butterfly genetics, and particularly interested in environmental influences upon gene expression. In GG IX, she worked with Dr. Luis Mendes specimens to support his monograph of the island lepidoptera.

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Lauren and Maria (right) working at night on Sao Tome.

Most of Maria’s specimens (below) must be examined in the laboratory before they can be postively identified.

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In addition to continuing to sample butterfly and moth species in the field, she has been closely involved the production and presentation of our primary school biodiversity awareness program. As readers already know, this program annually reaches around 2,000 third, fourth or fifth grade students in different schools on both islands.

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As a last project, the team went south on Sao Tome into the habitat of the endemic ibis, the Galinhola. This endemic is the smallest ibis in the world and is highly endangered by habitat loss and hunters seeking bush meat.  And below is the endemic gecko, Hemidactylus greeffi, found only on Sao Tome

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Ex Africa Semper Aliquid Novi; indeed, there is always something new out of Africa.I have just learned that Drs Dennis Desjardin and Brian Perry just published the 4th scientific paper based on their collections made on Sao Tome and Principe much earlier (Gulf of Guinea expeditions II and III).

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To date, they have added 25 new species records for the two islands and described six unique, endemicss.  There is a great deal of material yet to be examined; they estimate there are many more undescribed fungi in the collection.Here’s the Parting Shot:

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Members of Gulf of Guinea IX dining with our old friend and host, Ned Seligman of the NGO, STeP UP.  Left to right, Rayna Bell, Cesar Garcia, Lauren Esposito (small son of Danny’s, Bob, Ned, Roberta Ayres, Tom Daniel, Maria Jeronimo and Jim Shevock.

PARTNERS

Our research and educational expeditions are supported by tax-deductable donations to the “California Academy of Sciences Gulf of Guinea Fund.”*  On the islands, we are grateful for ongoing governmental support, and especially to Arlindo de Ceita Carvalho, Director General of the Ministry of the Environment and Faustino de Oliviera of the Forestry Department,  Republic of São Tomé and Príncipe, for their continuing authorization to collect and export specimens for study, and to Ned Seligman, Roberta dos Santos and Quintino Quade of STePUP of Sao Tome, our “home away from home”. Gulf of Guinea XI has been funded in part by a generous grant from The William K. Bowes Jr. Foundation, and substantial donations from Rod C. M. Hall, Timothy M. Muller, Mr. and Mrs. John L. Sullivan Jr., Mr. and Mrs. John Sears, and a heartening number of “Coolies”.  Once again we are deeply grateful for the support of the Omali Lodge (HBD-São Tomé) and Roça Belo Monte (Africa’s Eden-Príncipe) for both logistics and lodging, and to the Príncipe Trust for partial sponsorship of the production of our primary school, biodiversity awareness education program.

*California Academy of Sciences
55 Music Concourse Dr.
San Francisco, CA 94118
USA

THE RACE: Our Botanists “Run The Table”

THE RACE: Our Botanists “Run The Table”

Gulf of Guinea Expedition XI is now at the  midpoint. When we arrived two weeks ago, one team stayed on the big island while our botany group proceeded almost immediately to Principe, the smaller and most ancient in the archipelago (31 myr). Two of the botanist only had a couple of weeks, and the team was entering highly inaccessible parts of the southern half of the island for the first time.  The title of this blog refers to Pico Mesa (table), the most arduous and final botany destination of GG XI.

I have decided to construct this blog report as a series of Andrew Stanbridge’s magnificent photos  made during  expeditions into four rather remote parts of Principe Island. The botanists were introduced in an earlier blog.

I.  Day hike into Morro De Leste in the Obo National Park.  A relatively easy access point into  primary forest in the northwest corner of the island.

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Jim Shevock (California Academy of Sciences)

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Dr. Tom Daniel (California Academy of Sciences)

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II. Praia Seca to Rio Porco. A beach on the extreme south coast of Principe and hike to the ridge overlooking the Rio Porco (overnight).  There are no roads here, and the southern reaches of the island must be accessed by boat.  The botanists joined a group  researchers and trainees from the Principe Trust that was searching for individuals of the recently discovered Principe scops owl and teaching forest mapping techniques to local participants.

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Traveling down the east side of the island in a boat from Belo Monte.

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Dr. Cesar Garcia of the University of Lisbon.  Cesar is a specialist in bryophytes: mosses, liverworts and hornworts, as is Jim Shevock of CAS.

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III.  A day expedition on the north coast-Military Caverns to Praia Banana

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The field team. left to right: Balo (head guide), Dr. Tom Daniel, monkey hunters, Drs James Shevock and Cesar Garcia. Photographer Andrew Stanbridge not pictured.

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IV. Assault on Pico Mesa

Route from Roca Belo Monte in the north, south to Pico Mesa by boat.

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Pico Mesa. below, route from Rio Sao Tome to the mesa and back (overnight).

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Below: “The Father” one of the many ancient phonolite peaks on Principe.

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Above: An exhausted Dr. Cesar Garcia after reaching the summit of the mesa.

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Below: Dr. Shevock in a forest of endemic screwpines (Pandanus sp.)

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Below: Balo demonstrates how to stay hydrated using the jungle’s resources

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Below: Dr. Shevock collects his 50,000th career sample!

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Return to Belo Monte (above); below, Cesar sorting out the bryophyte collections.

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Some flowers found along the way

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All of the botanists  returned home at time of writing.   The next posting will be on the various activities of the remaining six expedition members.

PARTING SHOT:

blog-46-of-46Straw-colored fruit bat (Eidolon helvum)  Photo: Cesar Garcia

PARTNERS

Our research and educational expeditions are supported by tax-deductable donations to the “California Academy of Sciences Gulf of Guinea Fund.”*  On the islands, we are grateful for ongoing governmental support, and especially to Arlindo de Ceita Carvalho, Director General, Victor Bonfim, and Salvador Sousa Pontes of the Ministry of Environment of the Republic of São Tomé and Príncipe for their continuing authorization to collect and export specimens for study, and to Ned Seligman, Roberta dos Santos and Quintino Quade of STePUP of Sao Tome, our “home away from home”. The upcoming GG XI has been funded in part by a generous grant from The William K. Bowes Jr. Foundation, and substantial donations from Rod C. M. Hall, Timothy M. Muller, Mr. and Mrs. John L. Sullivan Jr., Mr. and Mrs. John Sears, and a heartening number of “Coolies”.  Once again we are deeply grateful for the support of the Omali Lodge (São Tomé) and Roça Belo Monte (Príncipe) for both logistics and lodging, and to the Príncipe Trust for partial sponsorship of our ongoing primary school education program.

*California Academy of Sciences
55 Music Concourse Dr.
San Francisco, CA 94118
USA

The Race: Fiat Lux

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Andrew Stanbridge, our photographer, receiving welcome local support; Príncipe Id, 2013 (all photos by Andrew unless otherwise indicated)

Readers will know that our primary focus from the beginning has been to discover and describe the biological wonders of these two islands in the Gulf of Guinea.  So far we have done pretty well on the scientific side of things, publishing 35 peer- reviewed, scientific papers, participating in international symposia on the biodiversity and island science and, among us delivering numerous presentations and posters at other scientific meetings via various media such as film, radio and video around the world. While in the islands of São Tomé and Príncipe we give illustrated talks to tourists at lodges, on local television and to advanced students at the polytechnic; even to friends in the government. But what about the majority of citizens of the islands themselves?  To be honest, they are no more aware of science nor of their unique environmental heritage than the majority of people in our own countries in Europe and the New World are aware of theirs.

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Youngster at Nova Moca, Sao Tome

Some six years ago, I was pondering how to involve the island people in the unique biological nature of their island home when I remembered something from my own youth: I happened to be young at the time one of the most successful food franchises in modern history caught fire in America: McDonald’s hamburgers!!

In the early sixties McDonald’s hamburgers were marketed heavily to young children, not to adults  Early Saturday mornings televisions  were beset with cartoon shows and other youth programs which entertained kids and allowed parents a little more time to sleep. There, the McDonald’s ads featured a clown (Ronald McDonald), lots of young kids and the memorable logo, the Golden Arches (below), which still endures today!  Youthful viewers were urged to convince their parents to take them to McDonalds….and the rest is history!

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A survey of the overall primary school curriculum by Roberta Ayres, MSc, coordinator and co-founder of our education project, revealed that the kids were mostly learning about European farm animals, rather than the unique island  species all around them!.  So in 2012, we and our local island colleagues inaugurated the education program focusing on youngsters, and this continues today..  We initially chose about  thirty geographically disparate primary schools (below) on both islands as our targets. We visit the same kids for three years in a row in these schools; i.e. we see the same group of classmates when they are in the third grade, then the fourth and finally fifth grades. After three years, we start over with the third grade.

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Third grade in primary school. Velma Schnoll, early participant from CAS in the background.

Each year our committee (below) meets to decide upon and produce the educational materials to bring to the schools.

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Education Team: Roberta Ayres, Sean Edgerton, Dr, Tom Daniel, Wayne and Alice Settle. Absent: Mike Murakami, Jim Boyer and Bob Drewes.

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These materials have ranged from simple colorful posters to decks of playing cards featuring endemic species (above). Last year (Gulf of Guinea IX), each child received a bird booklet and a pair of plastic binoculars (below).

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Quintino Quade (STeP UP) assisting with newly bestowed binoculars.

This year for GG XI, we are departing slightly from our emphasis on unique endemic species, and instead celebrating the special nature of the coastal waters, from which the islanders acquire the vast majority of their protein. There are, of course, plenty of endemic marine species in the waters of São Tomé and Príncipe as well.

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First, we are bringing brightly-colored posters of coastal species we have collected and identified for broad distribution (above).  In the classrooms, each fourth grader will receive a booklets describing these habitats (in Portuguese) and magnifiers. (below).

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This year our chief designer has  brought more images of people into the material, rather than emphasizing the plant and animal species alone.  The sketches above are preliminaries by our layout artist, Jim Boyer, later incorporated into the booklet, showing children using the magnifiers they will receive.

It is important to know that the children and teachers in each class are not just handed the materials.. Each classroom visit involves a small presentation (always involving the teacher and one or two students of his or her choice) showing how to use the materials; this presentation remains unchanged throughout the season and all members of team are involved.

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Anita Rodrigues (STeP Up) and Dr. Maria Jeronimo preparing materials for school visit

Our island partners, Quintino Quade, Anita Rodriques and Roberta dos Santos of STeP UP, notify all of the teachers and administrators in advance of our visits; Quintino and Roberta are themselves teachers and know almost everyone involved in education in the islands.

We are frequently aided by travelers we meet while on the islands and it is amazing how much fun everyone has.

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Signe Mikulane,  a  PhD  candidate volunteer  from the University of Heidleberg with Quintino Quade of STeP Up

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Maria and Anita in a classroom.

There are two important cornerstones to our project: 1. Every student gets a copy of thematerials we bring; no one is ever left out, and 2, we never preach.  Our message is always the same; “these islands are special, there are plants and animals here that are found nowhere else in the world. They belong to you, and nobody else. Be proud of them.”. Our goal is to impart a feeling of ownership and pride in their environment, without dictating how to manage these precious resources.

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Since our first work in the schools in 2012 we have personally reached about 2,000 children per year.  This part of the Gulf of Guinea project is a great joy (see below),  and I hope some years from now that one or two of these kids might be instrumental in finding a useful way preserving some of the uniqueness that we scientists have had such pleasure in discovering.

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Velma Schnoll greets arriving Roberta Ayres in the Sao Tome  airport – and another season begins

My next posting will be from the islands; in the meantime, here’s the parting shot:

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This is a sticker and our project logo. Each teacher is given 10 each year to award to students for good work.  We return each year to see these proudly worn on school uniforms.

PARTNERS

Our research and educational expeditions are supported by tax-deductable donations to the “California Academy of Sciences Gulf of Guinea Fund.”*  On the islands, we are grateful for ongoing governmental support, and especially to Arlindo de Ceita Carvalho, Director General, Victor Bonfim, and Salvador Sousa Pontes of the Ministry of Environment of the Republic of São Tomé and Príncipe for their continuing authorization to collect and export specimens for study, and to Ned Seligman, Roberta dos Santos and Quintino Quade of STePUP of Sao Tome, our “home away from home”. The upcoming GG XI has been funded in part by a generous grant from The William K. Bowes Jr. Foundation, and substantial donations from Rod C. M. Hall, Timothy M. Muller, Mr. and Mrs. John L. Sullivan Jr., Mr. and Mrs. John Sears, and a heartening number of “Coolies”.  Once again we are deeply grateful for the support of the Omali Lodge (São Tomé) and Roça Belo Monte (Príncipe) for both logistics and lodging, and to the Príncipe Trust for partial sponsorship of our ongoing primary school education program.

*California Academy of Sciences
55 Music Concourse Dr.
San Francisco, CA 94118
USA