Species Abundance: Natural Regulation of Insular Variation

Hamilton, Terrell H.; Rubinoff, Ira; Barth, Robert H.; Bush, Guy L.

doi:10.1126/science.142.3599.1575

Cited by 88 publications

(52 citation statements)

References 10 publications

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“…These results are in agreement with previous studies, which demonstrated that island area and highest elevation are both important predictors for plant diversity on remote islands (Ackerman et al, 2007;Hamilton et al, 1963;Johnson & Raven, 1973;McMaster, 2005). Largest and highest islands harbor more habitat diversity and tend to contain more native species, and vice versa.…”

Section: Physical Geography 507supporting

confidence: 95%

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Cyclones influence native plant diversity on 22 remote high islands of French Polynesia and Pitcairn (eastern Polynesia)

Larrue

2014

Physical Geography

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Section: Physical Geography 507supporting

confidence: 95%

“…For example, Hamilton, Rubinoff, Barth, and Bush (1963) and Johnson and Raven (1973) concluded that elevation is significant for plant diversity in the Galapagos Archipelago. On the islands of the northeast coast of Australia, Buckley (1985) showed the influence of both elevation and substrate type on plant diversity.…”

Section: Introductionmentioning

confidence: 97%

Cyclones influence native plant diversity on 22 remote high islands of French Polynesia and Pitcairn (eastern Polynesia)

Larrue

2014

Physical Geography

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“…Ackerman et al, 2007;Diamond, 1975;Paulay, 1994;Preston, 1962aPreston, , 1962bRosenzweig, 1995). For example, Hamilton et al (1963) and Johnson and Raven (1973) reported that elevation was significant for native plant species richness and diversity in the Galapagos Archipelago and similar results were obtained on the tropical islands of the northeast coast of Australia (Buckley, 1985), West Indies (McMaster, 2005) and French Polynesia (Larrue, 2014). In addition, edaphic substrata, soil nutrients, climate and productivity (see species-energy theory) also influence species richness on the islands (Field et al, 2008;John et al, 2007;Kalmar and Currie, 2006;Wright, 1983).…”

Section: Introductionsupporting

confidence: 62%

Native plant species richness on Eastern Polynesia’s remote atolls

Larrue

Butaud

Dumas

et al. 2015

Progress in Physical Geography: Earth and Environment

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Which abiotic factors influence the number of native plant species on remote atolls is an important question to understand better the spatial pattern of the species observed on these low and vulnerable coral islands. However, this issue is still very poorly documented, often due to human degradation, partial botanical surveys or the difficult geographic access of remote atolls for researchers. The remote atolls of Eastern Polynesia, which are among the most isolated in the world, are of great interest for studies of native species' distribution due to their isolation, low human density and urbanisation. In this study, we selected 49 remote atolls of Eastern Polynesia with complete botanical surveys to test the relative influence of eight abiotic factors on native plant species richness (i.e. indigenous and endemic species). Abiotic factors used as potential predictors included atoll area (km 2 ), shoreline length (km), atoll elevation (m) and index of isolation (UNEP), but also the coastal index of the atoll (I c ), the distance to the nearest similar atoll (km), the distance to the nearest large volcanic island ! 1000 km 2 (here, Tahiti as a potential stepping-stone island) and the distance to the nearest raised atoll ! 15 m a.s.l. (here, Makatea or Henderson as a potential refugium during sea-level highstands). Spearman's rank correlation, linear regression analysis and frequency diagrams were used to assess the relative influence of these factors on native species richness. No relationship was found between the species richness and the index of isolation or the distance to the nearest similar atoll. Atoll area and distance to the nearest raised atoll of Makatea explained 47.1% and 40%, respectively, of the native species richness variation observed on the remote atolls. The distance to the volcanic island of Tahiti and the coastal index explained 36.9% and 27.3% of the variation, while elevation and shoreline length explained 23.3% and 18.4% of the variation, respectively. Native species richness on the atolls surveyed increased with the

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“…It is now more or less accepted that the area of the islands per se does not explain all the variation in species number. Thus elevation, number of soil types, substrate types, plant species richness, number of habitats, habitat diversity, structure and heterogeneity have frequently been used to explain the species area curve (see Hamilton et al, 1963;Weissman & Rentz, 1976;Williamson, 1981;Buckley, 1985;Deshaye & Morisset, 1988;Rydin & Borgegard, 1988;Kelly, Wilson & Mark, 1989;Hart & Horwitz, 1991;Becker, 1992). In fact, many factors which could affect either immigration and extinction were not included in the original equilibrium model of MacArthur & Wilson (1963.…”

Section: Introductionmentioning

confidence: 99%

Effect of island geological age on the arthropod species richness of Azorean pastures

Borges

Brown

1999

Biological Journal of the Linnean Society

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Species richness of six pasture arthropod assemblages (total arthropod species, total herbivore species, sucking and chewing herbivores, total predatory species and spiders) were regressed against several geographical variables (area, distance from the nearest mainland, maximum elevation and geological age of the islands) of three Azorean islands (S. Maria, Terceira and Pico). The species were sampled by the fixed-quadrat size sampling method and the results obtained are consistent with the geological age hypothesis, i.e. the species richness of the six indigenous arthropod assemblages increases with the geological age of the islands, both at local and regional scales. Higher values of indigenous and endemic species richness were consistently found on the older island (S. Maria), and the lowest values on the most recent island (Pico). Moreover, when considering the age of Faial (an older island probably once connected with Pico) as a estimate of the age of Pico, correlations between species richness and island age were improved, thereby strengthening the relationship. The older island (S. Maria) has more specialized herbivores and a greater proportion of herbivores in relation to predatory arthropods. Ecological and biogeographical studies in the Azores should take into account the effects of the time each island has been available for colonization and evolution.

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Species Abundance: Natural Regulation of Insular Variation

Cited by 88 publications

References 10 publications

Cyclones influence native plant diversity on 22 remote high islands of French Polynesia and Pitcairn (eastern Polynesia)

Cyclones influence native plant diversity on 22 remote high islands of French Polynesia and Pitcairn (eastern Polynesia)

Native plant species richness on Eastern Polynesia’s remote atolls

Effect of island geological age on the arthropod species richness of Azorean pastures

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