. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 44 & Z LU o UJ cc Q < O LU 40" 30- 20- 10- LESSER ANTILLES CYCLONES 1500 -1989 —"i i"i"i i i r 1500 1550. 1600 1650 1700 1750 1800 1850 15 DECADE BEGINNING IN YEAR STATED 1980 Figure 22. Ten-year frequency of cyclones in the Lesser Antilles, 1500-1989. Records are considered reasonably comprehensive since 1650. (From Walsh and Reading 1991) °N in 1871-75, more southerly at °N in 1876-1901, somewhat more northerly in both the 1902-27 (°N) and 1928-58 (°N) periods, but
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 44 & Z LU o UJ cc Q < O LU 40" 30- 20- 10- LESSER ANTILLES CYCLONES 1500 -1989 —"i i"i"i i i r 1500 1550. 1600 1650 1700 1750 1800 1850 15 DECADE BEGINNING IN YEAR STATED 1980 Figure 22. Ten-year frequency of cyclones in the Lesser Antilles, 1500-1989. Records are considered reasonably comprehensive since 1650. (From Walsh and Reading 1991) °N in 1871-75, more southerly at °N in 1876-1901, somewhat more northerly in both the 1902-27 (°N) and 1928-58 (°N) periods, but much further south at °N since 1959 . Walsh & Reading (1991) found that the Atlantic/Caribbean appear to be more linked to shifts in key aspects of the atmospheric circulation rather than to changes in sea surface temperature or the frequency of El Nino events (as indicted by the chronology since 1500 of Quinn et al. 1987). Although strong El Nino events during the current century have been shown to be associated with a reduced frequency and changed spatial distribution of cyclones of hurricane intensity in the North Atlantic (Eyre & Gray 1990, Gray & Sheaffer 1991), it does not appear to have been the main influence on cyclones in the longer term. IMPLICATIONS The variations in climatic elements, notably rainfall, viewed as inputs to the terrestrial ecosystem, which we have identified, together with other perturbations, are on such a scale that they must have serious implications both for the structure of island ecosystems and for the processes at work within Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States
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