Colonization of an island volcano, Long Island, Papua New Guinea, and an emergent island, Motmot, in its caldera lake. VI. The pioneer arthropod community of Motmot

Edwards, John S.; Thornton, I. W. B.

doi:10.1046/j.1365-2699.2001.00637.x

Cited by 33 publications

(9 citation statements)

References 17 publications

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“…The best documented study of arthropods after a volcanic eruption is that of Edwards (1986; see also Edwards and Thornton, 2001), who found that wind transported most arthropods into barren sites on Mount St. Helens, but that most died. They formed short-lived scavenger-cannibalistic food webs that ultimately formed a basis for ecosystem development by enriching the soil (see Facilitation).…”

Section: Dispersalmentioning

confidence: 99%

Invasions of Plant Communities – More of the Same, Something Very Different, or Both?

Simberloff¹

2010

The American Midland Naturalist

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Section: Dispersalmentioning

confidence: 99%

Invasions of Plant Communities – More of the Same, Something Very Different, or Both?

Simberloff¹

2010

The American Midland Naturalist

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“…In fact, five out of nine significant cases were spiders. Spiders show a great dispersal capacity, as suggested by the fact that due to passive air dispersal using silk threads (ballooning), they can be found in the air at high altitudes (Freeman 1946) and are among the first colonizers of islands (Edwards & Thornton 2001). This characteristic, together with being generalist predators (Wise 1993), may result in spiders being in a higher degree of equilibrium with the environment than other taxa, something that, as explained in more detail in the next section, would enhance the relationship between probability of occurrence and local abundance.…”

Section: General Trendsmentioning

confidence: 99%

Species Distribution Models Do Not Account for Abundance: The Case of Arthropods on Terceira Island

Jiménez‐Valverde

Diniz

Azevedo

et al. 2009

Annales Zoologici Fennici

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The objective of this study is to investigate whether presence/absence models can be used as surrogates of arthropod abundance, and eventually under which circumstances such surrogacy is guaranteed. Presence/absence data for 48 arthropod species from Terceira Island were modelled using artificial neural networks. Probabilities of occurrence were correlated with abundance data from a standardized arthropod survey programme. Although a tendency was found for vagile species to show relationships, only nine species showed significant positive correlations between probability of presence and abundance. Five of these were exotic spider species with high abundances and wide distributions in several human-modified habitats. The patchy distribution of pristine habitats, the capacity to reach them and the probable low dependence on limiting resources, other than food, enhance the relationship. A lack of significant correlations for the majority of the species may be due to historical events, inappropriate scale, demographic controls of density, or the incapacity of presence/absence models to account for environmental suitability. The difficulty to identify a priori the species for which the relationship will hold advises against the use of species distribution models as surrogates of arthropod abundance.

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“…In general, spiders have great dispersal capacities due to the passive air dispersal using silk threads (ballooning). Due to this, they can be found in the air at high altitudes (Freeman, 1946) and are among the first colonisers of islands (Edwards & Thornton, 2001). However, spiders have a variety of body sizes and ecological strategies across families and the propensity to balloon differs among them (Platnick, 1976;Dean & Sterling, 1985;Bishop, 1990;Bishop & Riechert, 1990;Suter, 1999;Richardson et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Climate and regional beta‐diversity gradients in spiders: dispersal capacity has nothing to say?

Jiménez‐Valverde

2010

Insect Conserv Diversity

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Abstract. 1. The importance of dispersal capacity in structuring beta‐diversity gradients has been pointed out in a number of recent studies, making geographical distance (GD) an important predictor of the composition of assemblages apart from environment. In this study, we analyse the relative importance of climate, habitat complexity and GD in four spider families with different dispersal tendencies in the centre of the Iberian Peninsula. 2. Regional beta‐diversity was calculated for the four families and values were bootstrapped to test for significant difference between groups. Mantel tests assessed the explanatory capacity of four potential predictors – climatic similarity, similarity of vegetation complexity, GD and cost distance (CD) considering topography – on faunistic similarity. Simple regressions were used to compare decay rates, and bootstrapping tested for significant differences in coefficients. 3. Regional beta‐diversity values were higher in less vagile families. Climatic distance was strongly correlated with faunistic dissimilarity in the four families, whereas GD had no explanatory power. Except in one family, CD was correlated with faunistic dissimilarity but its independent association was negligible when controlling for climate. 4. Both the pattern of regional beta‐diversity among families and the pattern of variation in species composition explained by climate are consistent with the hypothesis that dispersion capacity influences the composition of the assemblages. However, climate distance was the main factor determining species sorting in space while GD had a weak effect. Differences in the degree of specialisation or nonlinear relationships between species composition and space may obscure the signal of GD at the scale of work.

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Colonization of an island volcano, Long Island, Papua New Guinea, and an emergent island, Motmot, in its caldera lake. VI. The pioneer arthropod community of Motmot

Cited by 33 publications

References 17 publications

Invasions of Plant Communities – More of the Same, Something Very Different, or Both?

Invasions of Plant Communities – More of the Same, Something Very Different, or Both?

Species Distribution Models Do Not Account for Abundance: The Case of Arthropods on Terceira Island

Climate and regional beta‐diversity gradients in spiders: dispersal capacity has nothing to say?

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