ATOLL RESEARCH BULLETIN - Smithsonian Institution

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RED-FOOTED BOOBY ISSC+I BLUE-FACED BOOBY FRIGATE BIRD TROMELIN ISLAND Fig. 10. Tromelin, showing distribution of breeding bird colonies SCALE - 0 w 200 400 METRZS
Climate In May 1954, a meteorological station was built on Tromelin Island (Platon 1956, Pretceille 1955). It was enlarged later. It is important for the air and sea traffic in this southern part of the Indian Ocean because it is situated in the cyclone zone of the Agalega-Cargados Carajos region where the tracks of cyclones often assume their southern curvature. The following weather data for the period 1955-1968, obtained from the Meteorological Department, ~&nion, through the kindness of Mr. E. Davy, Director of the Meteorological Department, Mauritius, is given in Table 20. An ombrothermic diagram (Fig. 9) is also included interpreting these figures following the method advocated by Bagnouls and Gaussen (1953). A dry cool season extending from July to mid-November prevails, followed by unstable weather with high precipitation during the cyclonic season when the rainfall may exceed 190 mm. Objectives and description of visit The aims of the visit were mainly to study, within the limits of the very short time available, the avifauna and vegetation of the islet and to obtain plant material for the Mauritius Herbarium. We landed from the military plane, which links up Tromelin once every two months with R6union Island, on the 29th of August 1968 at about 9.30 a.m. and left the next day at 2.15 p.m. having enjoyed the hospitality and comfortable quarters of the meteorological station. In spite of occasional showers passing over with the southeast trade winds, about fifteen hours field work were accomplished. A short 8 mm film on Kodachrome I1 was made of the nesting bird colonies and a fair amount of photographs both in colour and in black and white were obtained. Ornithological observations and collection of plant specimens were made, with special reference to studies by previous visitors. Previous studies at Tromelin Island In November 1953, R. Paulian visited the island, together with a party from Madagascar who came to study the possibilities of building a weather station there. During his two-day visit, he studied the entomological fauna and listed 28 insect species (Paulian 1955). Following the erection of the present station in May 1954, E. Brygoo accompanied the first relieving party in November of the same year. He ringed a hundred Red-footed Boobies and later published his observations on the avifauna (Brygoo 1955). On the 23rd February, 1962, R. 0. Morris on board H.M.S. - Owen paid a brief visit to the island and subsequently published a report about its avifauna (Morris 1964).
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ATOLL RESEARCH BULLETIN 136. Coral
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ACKNOWLEDGEMENT The Atoll Research
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J. D. Taylor Department of Zoology,
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15. Plants of Desroches F. R. Fosbe
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vi Page 21 . Fregataminorcolonies o
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viii 21. Transverse erosional groov
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Fig. 1. The Southwest Indian Ocean
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(c) the Farquhar group, comprising
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Acknowledgements Specific acknowled
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2. GEOGRAPHY AND ECOLOGY OF FARQIJH
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the 1960s. The atoll was visited in
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Lagoon and reefs Geomorphology Know
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esembles outcrops of clastic rocks
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are present, and those which are fo
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A single bryophyte, collected on th
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Breeding land birds Birds - The num
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Sula sula -- Recorded from South Is
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Borradaile, L. A. 1907. Land and fr
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Hartman, W. D. 1958. Report on some
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FARQUHAR ATOLL 1. Scaevola communit
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5. Prograding lagoon shore with Sca
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9. Replanting of coconuts in hurric
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13-14. Sooty Terns and Noddies op G
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17. Copra sheds at Settlement, Nort
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ELEUSINE INDICA (L.) Gaertn. South
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GYNANDROPSIS GYNANDRA (L.) Briq. S.
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RHIZOPHORA MUCRONATA Lam. North I.,
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4. AN OLD RECORD OF A BLUE PIGEON A
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5. GEOGRAPHY AND ECOLOGY OF COSMOLE
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Fig. 4. The Aldabra Group
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Polyte, about 250 m wide, is formed
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The mangrove vegetation has not bee
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46 Table 5. Mollusca collected on C
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group, for example a Dolichopodid f
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low and fast over the dunes and usu
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Guano is no longer worked on Northe
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Distant, W. L. 1913. Rhynchota. Par
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Smith, J. L. B. 1956. The fishes of
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PANICUM MAXIMUM Jacq. Menai I., s.
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CLEOME STRIGOSA (Boj.) Oliv. Wizard
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SCUTIA MYRTINA (Burm. f .) Kurz Men
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SARCOSTEMMA VIMINALE R. Br. Menai I
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7. LAND (INCLUDING SHORE) BIRDS OF
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Cisticola cherina Malagasy Grass -W
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It would be interesting to ascertai
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Wing Tail Culmen from base - - Asto
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Of six specimens whose extreme yout
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Locality Menai Wizard Wing 277 nun
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Summary 1. An account is given of t
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Vesey-FitzGerald, L. D. E. F. 1940.
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\ / \ / 0 1000 \ 1 \ ,.,' Metres ,
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deeply dissected with large solutio
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esembles the vegetation of the more
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wide muddy flats. In the north ther
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Table 10. Crustacea (Decapoda) coll
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-- Sula sula Recorded by Watson et
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assistance. Also Mr Basil Bell, Dir
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Lionnet, J. F. G. 1970. Note on the
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CYMODOCEA [CILI ATA] Seen by Grubb
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DIOSCOREA NESIOTIS Hemsl. S. l., Ri
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TAMARINDUS INDICA L. S. l., Ridgway
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ABUTILON ANGULATUM (G. ' P.) Mast.
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IPOMOEA PES-CAPRAE [L.) R. Br. (sen
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LAUNAEA INTYBACEA (Jaca . > P. Beau
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ACRAEIDAE Acraea ranavalona Boisduv
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As already recorded in the Cosmoled
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(page 14) that D. asha is "a dimorp
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Fryer, J. C. F. 1911. The structure
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I I . .. Windward perched sand beac
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scientific investigations. The Roya
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Table 13. Monthly rainfall at ~ssum
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Mixed scrub community The mixed scr
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One hole near the north point also
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Marine fauna The Green Turtle Chelo
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Nor has the Barn Owl Tyto alba been
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Nicoll's - B. - s. crawfordi, only
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(Bourne 1966). Not seen in 1967. Se
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dunes and the windward perched beac
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Dupont, R. P. 1907. Report on a vis
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Piggott, C. J. 1968. A soil survey
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ASSUMPTION ISLAND 18. Low champigno
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22. Outer edge of the reef flat nea
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26. View from the summit of the hig
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30. Leafless Pisonia in the low rr.
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34. Labourers' huts at Settlement;
Page 172 and 173: 148 SPOROBOLUS VIRGINICUS L. Along
Page 174 and 175: 150 ACALYPHA CLAOXYLOIDES Hutch. We
Page 176 and 177: CORDIA SUBCORDATA Lam. Northern par
Page 178 and 179: 14. GEOGRAPMY AND ECOLOGY OF DESROC
Page 180 and 181: Table 15. Scientific studies at Des
Page 182 and 183: Cassytha filiformis is very widespr
Page 184 and 185: In addition to these records, Coppi
Page 186 and 187: Baker, B. H. 1963. Geology and mine
Page 188 and 189: Parker, I. S. C. 1970. Some ornitho
Page 190 and 191: 38. Massive beachrock near the cent
Page 192 and 193: 42. Labourers' quarters at Settleme
Page 194 and 195: CYPERUS LIGULARIS L. Stoddart 4 Poo
Page 196 and 197: TERMINALIA CATAPPA L. Seen by Stodd
Page 198 and 199: ---- REEF EDGE 0 PHOSPHATIC SANDSTO
Page 200 and 201: The vegetation of the phosphate are
Page 202 and 203: Foudia madagascariensis First recor
Page 204 and 205: Rats have been introduced, but apar
Page 206 and 207: Lamb, C. G. 1914. Diptera: Heterone
Page 208 and 209: 17. PLANTS OF REMIRE (EAGLE) ISLAND
Page 210 and 211: ACALYPHA INDICA L. Stoddart & Poore
Page 212 and 213: 18. GEOGRAPHY AND ECOLOGY OF AFRICA
Page 214 and 215: Shore birds Ardea cinerea Two nests
Page 216 and 217: [Coppinger, R. W., and others.] 188
Page 218 and 219: TOURNEFORTIA ARGENTEA L. f. Seen by
Page 220 and 221: cannot provide any information on t
Page 224 and 225: Table 20. Meteorological data, mean
Page 226 and 227: Insects of Tromelin The following l
Page 228 and 229: to have been of Ipomoea pes-caprae
Page 230 and 231: Table 22. Breeding birds and occasi
Page 232 and 233: 44. -- Sula sula rubripes: chick wi
Page 234: 48. Sula sula rubripes: adult "brow
Page 237 and 238: 22. SOME ORNITHOLOGICAL OBSERVATION
Page 239 and 240: Sula leucogaster Bodd. One specimen
Page 241 and 242: Streptopelia picturata (Temm.) Some
Page 243 and 244: APPENDIX: NAMES OF THE ISLANDS J. F
Page 245 and 246: Alphonse, St Franfois and Bijoutier
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