Dissecting a biodiversity hotspot: The importance of environmentally marginal habitats in the Atlantic Forest Domain of South America

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dc.creatorDanilo Rafael Mesquita Neves
dc.creatorVanessa Leite Rezende
dc.creatorFelipe Zamborlini Saiter
dc.creatorAry Teixeira de Oliveira Filho
dc.creatorKyle Graham Dexter
dc.creatorToby Pennington
dc.creatorArthur Mouço Valente
dc.creatorMarcelo Leandro Bueno
dc.creatorPedro Vasconcellos Eisenlohr
dc.creatorMarco Aurélio Leite Fontes
dc.creatorPedro Luiz Silva de Miranda
dc.creatorSuzana Neves Moreira
dc.date.accessioned2023-06-22T22:00:49Z
dc.date.accessioned2025-09-09T00:03:47Z
dc.date.available2023-06-22T22:00:49Z
dc.date.issued2017
dc.identifier.doihttps://doi.org/10.1111/ddi.12581
dc.identifier.issn1472-4642
dc.identifier.urihttps://hdl.handle.net/1843/55244
dc.languagepor
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofDiversity and Distributions
dc.rightsAcesso Aberto
dc.subjectArvores
dc.subjectMata Atlântica
dc.subject.otherCampo rupestre
dc.subject.otherClimate conservation
dc.subject.otherAssessment flammability
dc.subject.otherRain forests restinga
dc.subject.otherStress gradients
dc.subject.otherVariation partitioning
dc.titleDissecting a biodiversity hotspot: The importance of environmentally marginal habitats in the Atlantic Forest Domain of South America
dc.typeArtigo de periódico
local.citation.epage909
local.citation.issue8
local.citation.spage898
local.citation.volume23
local.description.resumoAim: We aimed to assess the contribution of marginal habitats to the tree species richness of the Mata Atlântica (Atlantic Forest) biodiversity hotspot. In addition, we aimed to determine which environmental factors drive the occurrence and distribution of these marginal habitats. Location: The whole extension of the South American Atlantic Forest Domain plus forest intrusions into the neighbouring Cerrado and Pampa Domains, which comprises rain forests (“core” habitat) and five marginal habitats, namely high elevation forests, rock outcrop dwarf- forests, riverine forests, semideciduous forests and restinga (coastal white- sand woodlands). Methods: We compiled a dataset containing 366,875 occurrence records of 4,431 tree species from 1,753 site- checklists, which were a priori classified into 10 main vegetation types. We then performed ordination analyses of the species- by- site matrix to assess the floristic consistency of this classification. In order to assess the relative contribution of environmental predictors to the community turnover, we produced models using 26 climate and substrate- related variables as environmental predictors. Results: Ordination diagrams supported the floristic segregation of vegetation types, with those considered as marginal habitats placed at the extremes of ordination axes. These marginal habitats are associated with the harshest extremes of five limiting factors: temperature seasonality (high elevation and subtropical riverine forests), flammability (rock outcrop dwarf- forests), high salinity (restinga), water deficit severity (semideciduous forests) and waterlogged soils (tropical riverine forests). Importantly, 45% of all species endemic to the Atlantic Domain only occur in marginal habitats. Main conclusions: Our results showed the key role of the poorly protected marginal habitats in contributing to the high species richness of the Atlantic Domain. Various types of environmental harshness operate as environmental filters determining the distribution of the Atlantic Domain habitats. Our findings also stressed the importance of fire, a previously neglected environmental factor.
local.identifier.orcidhttps://orcid.org/0000-0002-0855-4169
local.identifier.orcidhttps://orcid.org/0000-0003-3032-8472
local.identifier.orcidhttps://orcid.org/0000-0001-6597-869X
local.identifier.orcidhttps://orcid.org/0000-0002-6766-1407
local.identifier.orcidhttps://orcid.org/0000-0002-8196-288X
local.identifier.orcidhttps://orcid.org/0000-0003-3552-6355
local.identifier.orcidhttps://orcid.org/0000-0001-6146-1618
local.identifier.orcidhttps://orcid.org/0000-0002-5912-8370
local.identifier.orcidhttps://orcid.org/0000-0001-8467-4667
local.identifier.orcidhttps://orcid.org/0000-0002-3008-1556
local.identifier.orcidhttps://orcid.org/0000-0001-6806-8149
local.publisher.countryBrasil
local.publisher.departmentICB - DEPARTAMENTO DE BOTÂNICA
local.publisher.initialsUFMG
local.url.externahttps://onlinelibrary.wiley.com/doi/10.1111/ddi.12581

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