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60 results for “Chagos Archipelago”
Data for: Geolocation and immersion loggers reveal year-round residency and consequent nutrient deposition rates of adult red-footed boobies in the Chagos Archipelago, tropical Indian Ocean
<p>Bio-logging has revealed much about high-latitude seabird migratory strategies, but migratory behaviour in tropical species may differ, with implications for understanding nutrient deposition. Here we use combined light-level and saltwater immersion loggers to study the year-round movement behaviour of adult red-footed boobies (<em>Sula sula rubripes</em>) from the Chagos Archipelago, tropical Indian Ocean to assess migratory movements and estimate nutrient deposition rates based on the number of days they spent ashore. Light levels suggest that red-footed boobies are resident in the Chagos Archipelago year-round, although there are large latitudinal errors this close to the equator. Immersion data also indicate residency with tracked birds returning to land every one or two days. Spending an average of 79.86 ± 2.80 days and 280.84 ± 2.64 nights per year on land allows us to estimate that the 21,670 pairs of red-footed boobies deposit 37.34 ± 0.56 tonnes year<sup>-1</sup> of guano-derived nitrogen throughout the archipelago. Our findings have implications for tropical seabird conservation and phylogenetics, as well as for assessing the impact of seabird nutrients on coral reef ecosystems.</p>
Data for: Geolocation and immersion loggers reveal year-round residency and consequent nutrient deposition rates of adult red-footed boobies in the Chagos Archipelago, tropical Indian Ocean
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Data from: Predicting the distribution of Mesophotic coral ecosystems in the Chagos Archipelago
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FIGURE 2 in The goldrim surgeonfish (Acanthurus nigricans; Acanthuridae) from Diego Garcia, Chagos Archipelago: first record for the central Indian Ocean
FIGURE 2. Map of Diego Garcia, Chagos Archipelago, British Indian Ocean Territory. Asterisks (*) indicate approximate collecting localities.
FIGURE 1 in The goldrim surgeonfish (Acanthurus nigricans; Acanthuridae) from Diego Garcia, Chagos Archipelago: first record for the central Indian Ocean
FIGURE 1. Photographs of Acanthurus nigricans at Diego Garcia, Chagos Archipelago, British Indian Ocean Territory.
FIG. 10 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 10. (a) Taringa luteola Chag96 /69: ventral view of head. (b) Chromodoris cf. leopardus Chag96/34: ventral view of head.
FIG. 9 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 9. SEM of radular teeth, Taringa luteola Chag96/69, scales 10 mm. (A) First few laterals. (B) Teeth in mid-row. (C) Last four marginals.
FIG. 3 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 3. Aplysia cf. parvula Chag96 /18. (a) Extruded penis. (b) Radular teeth drawn with camera lucida.
FIG. 13 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 13. (a) Chromodoris tennentana Chag96/61: 18 mm. (b) Chromodoris cf. leopardus Chag96/78. (c) Glossodoris cincta Chag96/59: 27 mm. (d) Glossodoris symmetricus Chag96/50: 26 mm. (e) Hypselodoris maculosa Chag96 /60: 11 mm. (f) Hypselodoris nigrostriata Chag96/58: approx. 25 mm.
FIG. 17 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 17. (a) Phyllidiella rosans Chag96/23: ventral view of oral tentacles. (b) Phyllidiella striata Chag96/5: ventral view of oral tentacles.
FIG. 12 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 12. SEM of radular teeth. (A, B) Chromodoris quadricolor Chag96/87, scales 20 mm. (C, D) Chromodoris cf. leopardus Chag96 /34, scales 5 10 mm.
FIG. 4 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 4. (a) Nembrotha lineolata Chag96/63: 45 mm. (b) Nembrotha cf. lineolata Chag96 /95: 14 mm. (c) Aldisa pikokai Chag96/90: 18 mm. (d) Hoplodoris estrelyado Chag96 /89: 15 mm. (e) Taringa luteola Chag96/69: 25 mm. (f) Chromodoris cf. leopardu s Chag96 /34: 34 mm. (g) Dendrodoris tuberculosa Chag96 /7: 140 mm. (h) Dermatobranchus albus Chag96/45: 12 mm.
FIG. 11 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 11. (a) Halgerda tesselata Chag96 /30b: 25 mm. (b) Halgerda willeyi Chag96/77b: 12 mm. (c) Cadlinella ornatissima Chag96 /91: 14 mm. (d) Chromodoris gleniei Chag96 /73: 42 mm. (e, f) Chromodoris quadricolor Chag96/52b and Chag96/87: 40 mm.
FIG. 16 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 16. (a). Fryeria marindica Chag96/27: 24 mm. (b) Phyllidia coelestis Chag96/43b: 28 mm. (c) Phyllidia multituberculata Chag96 /29: 27 mm. (d) Phyllidiella meandrina Chag96 /35: 18 mm. (e) Phyllidiella rosans Chag96/48: 15 mm. (f) Phyllidiella striata Chag96/2: 35 mm.
FIG. 19 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 19. (a) Phyllidiella zeylanica Chag96/19: 24 mm. (b) Phyllidiopsi s cardinalis Chag96 /75: 38 mm. (c) Phyllidiopsis xishaensis Chag96 /26: 18 mm. (d) Phyllidiopsis sp. Chag96/65: 37 mm.
FIG. 18 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 18. (a) Phyllidiella striata: tracing of Bergh (1889) taf. 84, ®gure 23. (b) Scyllaea pelagica Chag96/55: radular teeth drawn with camera lucida, row 1. (c) Dermatobranchus sp. Chag96/85: dorsal view: composite drawing from life and camera lucida (based on preserved length of 6 mm).
FIG. 20 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 20. SEM of radular teeth. (A) Dermatobranchus albus Chag96 /45, scale 510 mm. (B) Dermatobranchus sp. Chag96 /85, scale 510 mm.
FIG. 2 in Opisthobranch molluscs from the Chagos Archipelago, Central Indian Ocean
FIG. 2. (a) Chelidonur a punctata Chag96 /1: 50 mm. (b) Chelidonur a sandrana Chag96 /54: 13 mm. (c) Thuridilla bayeri Chag96/93: 15 mm. (d) Aplysia cf. parvula Chag96 /18: 10 mm. (e) Nembrotha lineolata Chag96/62: 65 mm. (f) Notodoris minor Chag96/84a: 21 mm.
Figure 11 in New Chilopoda from the Chagos Archipelago
Figure 11. Phylogenetic relationships of the Lamyctes-Henicops group based on COI sequence data. Bootstrap support values (left) and posterior probabilities (right) indicated above each ingroup node. Tree figure based on maximum likelihood (ML) analysis.
Figure 7. Rhysida longipes Newport, 1845. NHMUK015619672 in New Chilopoda from the Chagos Archipelago
Figure 7. Rhysida longipes Newport, 1845. NHMUK015619672. (A) Anterior margin of forcipular coxosternite and internal margin of left forcipule, ventral view. (B) Ultimate leg-bearing segment and postpedal segments, ventral view. (C) Leg 1, lateral view, showing tibial spur and tarsal spurs. (D) Leg 7, lateral view.
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