The Distribution and Abundance of Tallgrass Prairie Plants: A Test of the Core-Satellite Hypothesis

Gotelli, Nicholas J.; Simberloff, Daniel

doi:10.1086/284695

Cited by 131 publications

(115 citation statements)

References 36 publications

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“…The intermediate classes collectively accounted for 289 occurrences and were represented by four frequent species (6.5%), six constant species (9.7%) and ten infrequent species (16.1%). The predominance of rare species and the abundance of a few species in a site has been documented in tropical forests, for nonvascular plants (Santos & Lisboa 2003Souza & Lisboa 2005;Silva & Pôrto 2007;Alvarenga & Lisboa 2009;Ilkiu-Borges et al 2009) and vascular plants (Gotelli & Simberloff 1987;Collins & Glenn 1990;Rees 1995;Boecken & Shachak 1998;van Rensburg et al 2000).…”

Section: Resultsmentioning

confidence: 98%

Richness of Marchantiophyta and Bryophyta in a protected area of the Brazilian Amazon

Macedo

Ilkiu–Borges

2014

Acta Bot. Bras.

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The bryophytes of Gurupi Biological Reserve represent an important component of the biodiversity of the Amazon in the Brazilian state of Maranhão. This study aimed to investigate the richness of bryophytes (Marchantiophyta and Bryophyta) from Gurupi Biological Reserve and compare it with that found in other surveys conducted in Maranhão and in the northeastern part of the state of Pará, because the latter shows similarities with the study area in terms of vegetation, geography, demography, and history of occupation. We recorded 983 occurrences of bryophytes (549 Marchantiophyta and 434 Bryophyta) corresponding to 62 species (43 liverworts and 19 mosses), 39 genera, and 12 families. Of those 62 species, 25 have previously been collected from all regions of Brazil, two are restricted to two regions, and four are restricted to the northern (Amazon) region. The bryophyte species identified within the reserve correspond to 28.9% of the known bryophytes in Maranhão and 31.3% of the known bryophytes in northeastern Pará, the reserve therefore more closely resembling the latter area. The exclusively Amazonian elements found in the reserve underscore their affinity for this biome and their presence in the state of Maranhão. The importance of this conservation area to Maranhão and to the Amazon region of the state is confirmed by the high number of new records for the state (41 species), five of which are also new records for northeastern Brazil.

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Section: Resultsmentioning

confidence: 98%

Richness of Marchantiophyta and Bryophyta in a protected area of the Brazilian Amazon

Macedo

Ilkiu–Borges

2014

Acta Bot. Bras.

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“…Efforts to describe the shape of empirical SARs (Drakare et al 2006;Dengler 2009) have to date mostly involved curve fitting (but see Legendre 1996, 2002). A general formula for sample-based SARs that describes the range of forms of the relationship has been lacking (Gotelli and Colwell 2011), except under specific conditions (Colwell et al 2004). With exponential z diversity decline, the SAR follows Fisher et al's (1943) 3A).…”

Section: Species Accumulation Curvesmentioning

confidence: 99%

“…Several mechanisms have been proposed to explain this bimodality. One explanation is the core-satellite hypothesis, which explains bimodality as a division of the assemblage into groups of species with different stochastic immigration and extinction rates (Hanski 1982; but see Gotelli and Simberloff 1987;Gaston and Lawton 1989;Magurran and Henderson 2003). Explanations based on sampling (Nee et al 1991;Papp and Izsák 1997) and the scale dependence of species occupancy (Conlisk et al 2007;He and Condit 2007;McGeoch 2007a, 2007b) are also able to account for this bimodality.…”

Section: Occupancy Frequency Distributionsmentioning

confidence: 99%

Zeta Diversity as a Concept and Metric That Unifies Incidence-Based Biodiversity Patterns

Hui

McGeoch

2014

The American Naturalist

150

268

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Online enhancements: appendix, zip file. abstract: Patterns in species incidence and compositional turnover are central to understanding what drives biodiversity. Here we propose zeta (z) diversity, the number of species shared by multiple assemblages, as a concept and metric that unifies incidence-based diversity measures, patterns, and relationships. Unlike other measures of species compositional turnover, zeta diversity partitioning quantifies the complete set of diversity components for multiple assemblages, comprehensively representing the spatial structure of multispecies distributions. To illustrate the application and ecological value of zeta diversity, we show how it scales with sample number, grain, and distance. Zeta diversity reconciles several different biodiversity patterns, including the species accumulation curve, the species-area relationship, multispecies occupancy patterns, and scaling of species endemism. Exponential and power-law forms of zeta diversity are associated with stochastic versus niche assembly processes. Zeta diversity may provide new insights on biodiversity patterns, the processes driving them, and their response to environmental change.

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“…Gotelli & Simberloff 1987). Note that immigration rates i are not the same thing as the number of immigration events i(1-p).…”

Section: Residence Timementioning

confidence: 99%

How fast is the carousel? Direct indices of species mobility with examples from an Oklahoma grassland

Palmer

Rusch

2001

J Vegetation Science

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Abstract. Current interest in small-scale species dynamics has led to a proliferation of mobility indices. We advocate the use of direct measures of mobility such as immigration rate, extinction rate, residence time, and carousel time. We also demonstrate that the null expectation of cumulative frequency under different null models can be calculated explicitly. Species can depart from the commonly-used 'random reassignment' model simply because of longevity, and not mobility per se. We therefore prefer a random immigration null model, which assumes that immigration locations are randomized.We examined mobility patterns of selected plant species, studied in 256 quadrats of each of four grains (ranging from 1/64 m 2 to 1 m 2 ) in an Oklahoma grassland. Residence times and carousel times can be centuries or even millennia for some species. We explore the numerical and biological reasons for relationships between mobility statistics. Mobility statistics are fairly consistent among grains and years, although the residence times of species exhibit some subtle scale dependence. Species depart from a random immigration model very slightly -but the departure is consistent: species tend to re-occupy previously vacated space more often than expected due to chance. We believe that the use of direct indices will facilitate the study of how species characteristics influence mobility.

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The Distribution and Abundance of Tallgrass Prairie Plants: A Test of the Core-Satellite Hypothesis

Cited by 131 publications

References 36 publications

Richness of Marchantiophyta and Bryophyta in a protected area of the Brazilian Amazon

Richness of Marchantiophyta and Bryophyta in a protected area of the Brazilian Amazon

Zeta Diversity as a Concept and Metric That Unifies Incidence-Based Biodiversity Patterns

How fast is the carousel? Direct indices of species mobility with examples from an Oklahoma grassland

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