Unseen rare tree species in southeast Brazilian forests: a species abundance distribution approach

dc.creatorTerra, Marcela de Castro Nunes Santos
dc.creatorSilveira, Eduarda Martiniano de Oliveira
dc.creatorWithey, Kieran Daniel
dc.creatorMello, José Marcio de
dc.creatorCordeiro, Natielle Gomes
dc.creatorPereira, Kelly Marianne Guimarães
dc.creatorScolforo, José Roberto Soares
dc.date2021-09-09T19:05:31Z
dc.date2021-09-09T19:05:31Z
dc.date2020-08
dc.date.accessioned2023-09-28T20:00:40Z
dc.date.available2023-09-28T20:00:40Z
dc.identifierTERRA, M. de C. N. S. et al. Unseen rare tree species in southeast Brazilian forests: a species abundance distribution approach. Community Ecology, [S. I.], v. 21, p. 229-238, Oct. 2020. DOI: https://doi.org/10.1007/s42974-020-00025-4.
dc.identifierhttps://doi.org/10.1007/s42974-020-00025-4
dc.identifierhttp://repositorio.ufla.br/jspui/handle/1/48086
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9042278
dc.descriptionRarity is an important aspect of biodiversity often neglected in ecological studies. Species abundance distributions (SADs) are useful tools to describe patterns of commonness–rarity in ecological communities. Most studies assume field observations of species relative abundances are approximately equal to their true relative abundances, thus dismissing the potential for, and importance of unseen rare species. Here, we adopted the approach proposed by Chao et al. (Ecol, 96:1189–1201, 2015) to estimate the number and abundance of unseen species, and thus the true SADs, for tree species in 48 forest sites in Minas Gerais state, Brazil (4 rainforests, 35 semideciduous forests, and 9 deciduous forests). Also, we assessed the correlations between both unseen and rare species and sampling protocol and environment characteristics (climate, terrain, terrain heterogeneity). We found estimated true SADs invariably had higher species richness values than observed in the surveys, due to the increase in rare species. We estimate that up to 55.6% of tree species per site were unseen (8.5–55.6%), with an average of 26.6%. The estimated percentage of rare species per site was between 31.9% and 72.8%, with an average of 57.78%. We found rarity to be most strongly correlated with the percentage of unidentified trees, local terrain conditions and heterogeneity at site-level. Semideciduous forest and rainforest had similar higher percentages of unseen species (c. 27.2%) when compared to deciduous forests, probably due to the relatively higher local heterogeneity of these forests, which may provide more niches for rare species. Future studies should consider estimating true species abundances to better assess biodiversity.
dc.languageen
dc.publisherSpringer Nature
dc.rightsrestrictAccess
dc.sourceCommunity Ecology
dc.subjectForest ecology
dc.subjectTree species
dc.subjectSpecies rarity
dc.subjectSpecies diversity
dc.subjectSpecies abundance distribution
dc.subjectEcologia florestal
dc.subjectEspécies de árvore
dc.subjectEspécies raras
dc.subjectDiversidade de espécies
dc.subjectDistribuição de abundância de espécies
dc.titleUnseen rare tree species in southeast Brazilian forests: a species abundance distribution approach
dc.typeArtigo


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