Analytical formulae for computing dominance from species-abundance distributions

Fung, Tak; Villain, Laura; Chisholm, Ryan A.

doi:10.1016/j.jtbi.2015.09.011

Cited by 10 publications

(11 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The lowland rainforest of the Amazon River basin and Guiana Shield, hereafter Amazonia, covers an area of nearly 6 million km 2 with an estimated total number of 3.9 × 10 11 trees (diameter at 1.30 m -dbh ≥ 10 cm) 1 . Sampling such an extensive area has been extremely limited, and accurate estimates of the total number of tree species and their populations have thus been difficult to obtain 1 .…”

mentioning

confidence: 99%

“…In 2013, we estimated that around 16,000 tree species should occur within Amazonia 1 using the distribution of estimated total abundances of all tree species occurring in 1,170 forest plots scattered across the area. A number that has both been criticized [2][3][4] and accepted as plausible for plot inventories 5 . In the following years there has been considerable progress both in the taxonomy of Amazonian tree species 4,[6][7][8] and the number of forest inventory plots available 9 , which has steadily grown from 1,170 to 1,946.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Biased-corrected richness estimates for the Amazonian tree flora

Steege¹,

Prado²,

Lima³

et al. 2020

Sci Rep

View full text Add to dashboard Cite

Amazonian forests are extraordinarily diverse, but the estimated species richness is very much debated. Here, we apply an ensemble of parametric estimators and a novel technique that includes conspecific spatial aggregation to an extended database of forest plots with up-to-date taxonomy. We show that the species abundance distribution of Amazonia is best approximated by a logseries with aggregated individuals, where aggregation increases with rarity. By averaging several methods to estimate total richness, we confirm that over 15,000 tree species are expected to occur in Amazonia. We also show that using ten times the number of plots would result in an increase to just ~50% of those 15,000 estimated species. To get a more complete sample of all tree species, rigorous field campaigns may be needed but the number of trees in Amazonia will remain an estimate for years to come.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Biased-corrected richness estimates for the Amazonian tree flora

Steege¹,

Prado²,

Lima³

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Recently, ter Steege and colleagues estimated the number of Amazonian tree species that exceed 10 cm diameter at breast height (DBH) at ~16,000, by fitting a logseries curve to population estimates of ~5000 species identified in 1170 inventory plots across Amazonia 11 . That hypothesis has been embraced as plausible by some authors 12 but criticized by others 13 14 . Non-parametric estimates, that were suggested by an anonymous reviewer of the above paper, predict considerably lower plant diversity: 6000–7000 species in the case of Amazonian trees 11 .…”

mentioning

confidence: 99%

The discovery of the Amazonian tree flora with an updated checklist of all known tree taxa

Steege

Vaessen

Cárdenas-López

et al. 2016

Sci Rep

187

157

View full text Add to dashboard Cite

Amazonia is the most biodiverse rainforest on Earth, and the debate over how many tree species grow there remains contentious. Here we provide a checklist of all tree species collected to date, and describe spatial and temporal trends in data accumulation. We report 530,025 unique collections of trees in Amazonia, dating between 1707 and 2015, for a total of 11,676 species in 1225 genera and 140 families. These figures support recent estimates of 16,000 total Amazonian tree species based on ecological plot data from the Amazonian Tree Diversity Network. Botanical collection in Amazonia is characterized by three major peaks, centred around 1840, 1920, and 1980, which are associated with flora projects and the establishment of inventory plots. Most collections were made in the 20th century. The number of collections has increased exponentially, but shows a slowdown in the last two decades. We find that a species’ range size is a better predictor of the number of times it has been collected than the species’ estimated basin-wide population size. Finding, describing, and documenting the distribution of the remaining species will require coordinated efforts at under-collected sites.

show abstract

“…Species-abundance distribution (SAD) can be an indicator of commonness and rarity in a community (Harte 2011) and rare species in SAD tend to be well-fitted to the log-series distribution (Magurran and Henderson 2003). In addition, species richness is considered an important component in community evenness which can affect the statistical estimates of SAD rare species (Fung et al 2015). Moreover, SAD can be essential for ecosystem understanding once evenness is more sensible to changes than richness itself.…”

Section: Discussionmentioning

confidence: 99%

Periphytic algae traits are mainly lognormally distributed in a neotropical floodplain tributary

2018

View full text Add to dashboard Cite

In addition to playing an empirical role in establishing a close characterization of ecological communities, speciesabundance distribution enables the comparison of different communities with a compact description of structures. Several models seek proper understanding of this distribution, although currently two are the models more commonly used: logseries and lognormal. Studies on these patterns raise theories seeking an improved understanding. In this context, Hubbell proposes a neutral model (Unified Neutral Theory) as zero-sum multinomial species-abundance distribution model bringing renewed understanding and discussion. Since the neutral theory is expressly related to communities of non-motile organisms, the periphytic algal community represents an excellent group to have patterns and ecological theories investigated. Thereby, the objective of this study is the assessment of periphytic algal community structure supported by the Neutral Theory. Data include samples of petioles from stands of the Eichhornia azurea (Sw.) Kunth aquatic macrophyte (n = 45). We fitted five SAD models to our data (Poisson lognormal, lognormal, log-series, zero-sum multinomial and the geometric series). The non-neutral model (lognormal distribution) fit more satisfactorily. Hence, in the context of our results, we present two conclusions: the periphytic algal community dynamics cannot be regarded as neutral and the structuring did not occur through ecological drift. Our study reveals the relevance of periphytic algal communities as an object of study for ecological theories and the importance of the SAD modeling debate.

show abstract

Analytical formulae for computing dominance from species-abundance distributions

Cited by 10 publications

References 54 publications

Biased-corrected richness estimates for the Amazonian tree flora

Biased-corrected richness estimates for the Amazonian tree flora

The discovery of the Amazonian tree flora with an updated checklist of all known tree taxa

Periphytic algae traits are mainly lognormally distributed in a neotropical floodplain tributary

Contact Info

Product

Resources

About