0198566123.pdf

68 THE BIOGEOGRAPHY OF ISLAND LIFE Unfortunately, with the exception of a few well- studied islands, few groups of insects are s ...

rodents occur on the Solomons and Bismarcks, neither archipelago being particularly remote from New Guinea. But for the more rem ...

70 THE BIOGEOGRAPHY OF ISLAND LIFE particular host plants required by butterfly larvae. This may limit their potential for rapid ...

concentrate in less apparent taxa (beetles, and the like), it is understood that many undiscovered species remain for collectors ...

occurred as a result of climatic changes and the associated sea-level changes and habitat alterations at the end of the Pleistoc ...

(compare Rainey et al. 1995; Vitousek et al. 1995; Olesenet al. 2002). It has been observed that the rapidity of human- induced ...

74 THE BIOGEOGRAPHY OF ISLAND LIFE dispersal and those largely dismissive of the biogeographical significance of such processes, ...

PART II Island Ecology Volcanic islands can reach considerable heights, and then are subject to process of erosion, dissection a ...

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Area is the devil’s own variable. (Anon.) Coastal islands are notorious for their accumulation, at all seasons, of a staggering ...

the intersection). The immigration rate curve flat- tens with increasing isolation, and extinction rate with increasing area, th ...

succession theory, and savanna ecology, to name but a few. The island laboratories once again have been a testing ground for dev ...

80 SPECIES NUMBERS GAMES: THE MACROECOLOGY OF ISLAND BIOTAS Researchers use SACs to estimate and compare the species richness of ...

THE DEVELOPMENT OF THE EQUILIBRIUM THEORY 81 densities would have little chance of persisting and should frequently go locally e ...

ranges: ordinary islands, 0.05–1.132; habitat islands, 0.09–0.957; and mainland samples
0.276 to 0.925. It is important to esta ...

species would be lost and might not be replaced by immigration for some years (e.g. Paine 1985). Average this across the whole i ...

moreover, those tests that have been conducted have proved equivocal. At the outset, MacArthur and Wilson (1963, 1967) produced ...

easily grasped without reference to such com- plicating features. Figure 4.1 illustrates immigration and extinction as hollow cu ...

86 SPECIES NUMBERS GAMES: THE MACROECOLOGY OF ISLAND BIOTAS The equation for equilibrium is: where Sis the number of species at ...

The next element of their theory sketched out, in mathematical terms, a portrait of the biological attributes of the superior co ...