Biodiversity from the Sky: Testing the Spectral Variation Hypothesis in the Brazilian Atlantic Forest

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorFederal University of Espírito Santo-
Autor(es): dc.contributorInstitute of Agricultural and Forestry Defense of Espírito Santo-
Autor(es): dc.contributorUniversidade Federal de Sergipe (UFS)-
Autor(es): dc.contributorFederal Rural University of Rio de Janeiro-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorCanopy Remote Sensing Solutions-
Autor(es): dc.creatorPinon, Tobias Baruc Moreira-
Autor(es): dc.creatorMendonça, Adriano Ribeiro de-
Autor(es): dc.creatorSilva, Gilson Fernandes da-
Autor(es): dc.creatorEffgen, Emanuel Maretto-
Autor(es): dc.creatorRodrigues, Nívea Maria Mafra-
Autor(es): dc.creatorFernandes, Milton Marques-
Autor(es): dc.creatorSansevero, Jerônimo Boelsums Barreto-
Autor(es): dc.creatorAlmeida, Catherine Torres de-
Autor(es): dc.creatorDias, Henrique Machado-
Autor(es): dc.creatorGonçalves, Fabio Guimarães-
Autor(es): dc.creatorAlmeida, André Quintão de-
Data de aceite: dc.date.accessioned2025-08-21T15:17:24Z-
Data de disponibilização: dc.date.available2025-08-21T15:17:24Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/rs16234363-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/298143-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/298143-
Descrição: dc.descriptionTropical forests have high species richness, being considered the most diverse and complex ecosystems in the world. Research on the variation and maintenance of biodiversity in these ecosystems is important for establishing conservation strategies. The main objective of this study was to test the Spectral Variation Hypothesis through associations between species diversity and richness measured in the field and hyperspectral data collected by a Remotely Piloted Aircraft (RPA) in areas with secondary tropical forest in the Brazilian Atlantic Forest biome. Specific objectives were to determine which dispersion measurements, standard deviation (SD) or coefficient of variation (CV), estimated for the n pixels occurring within each sampling unit, better explains species diversity; the effects of pixel size on the direction and intensity of this relationship; and the effects of shaded pixels within each sampling unit. The spectral variability hypothesis was confirmed for the Atlantic Forest biome, with R2 of 0.83 for species richness and 0.76 and 0.69 for the Shannon and Simpson diversity indices, respectively, using 1.0 m illuminated pixels. The dispersion (CV and SD) of hyperspectral bands were most strongly correlated with taxonomic diversity and richness in the red-edge and near-infrared (NIR) regions of the electromagnetic spectrum. Pixel size affected R2 values, which were higher for 1.0 m pixels (0.83) and lower for 10.0 m pixels (0.71). Additionally, illuminated pixels had higher R2 values than those under shadow effects. The main dispersion variables selected as metrics for regression models were mean CV, CV for the 726.7 nm band, and SD for the 742.3 and 933.4 nm bands. Our results suggest that spectral diversity can serve as a proxy for species diversity in the Atlantic Forest. However, factors that can affect this relationship, such as taxonomic and spectral diversity metrics used, pixel size, and shadow effects in images, should be considered.-
Descrição: dc.descriptionDepartment of Forestry and Wood Sciences Federal University of Espírito Santo, ES-
Descrição: dc.descriptionInstitute of Agricultural and Forestry Defense of Espírito Santo, ES-
Descrição: dc.descriptionDepartment of Forestry Engineering Federal University of Sergipe, SE-
Descrição: dc.descriptionDepartment of Environmental Sciences Federal Rural University of Rio de Janeiro, RJ-
Descrição: dc.descriptionDepartment of Fisheries Resources and Aquaculture São Paulo State University (Júlio de Mesquita Filho), SP-
Descrição: dc.descriptionCanopy Remote Sensing Solutions, SC-
Descrição: dc.descriptionDepartment of Agricultural Engineering Federal University of Sergipe, SE-
Descrição: dc.descriptionDepartment of Fisheries Resources and Aquaculture São Paulo State University (Júlio de Mesquita Filho), SP-
Idioma: dc.languageen-
Relação: dc.relationRemote Sensing-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDrone-
Palavras-chave: dc.subjecthyperspectral RPA-
Palavras-chave: dc.subjectred-edge vegetation index-
Palavras-chave: dc.subjectsecondary forest-
Palavras-chave: dc.subjectShannon-
Palavras-chave: dc.subjectSimpson-
Palavras-chave: dc.subjectunmanned aerial vehicle-
Título: dc.titleBiodiversity from the Sky: Testing the Spectral Variation Hypothesis in the Brazilian Atlantic Forest-
Tipo de arquivo: dc.typelivro digital-
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