Cryptogamic epiphytes as indicators of successional changes in megadiverse lowland rain forests of western Amazonia

The Amazonian rain forests of Yasuni National Park, Ecuador (YNP), count among the world's forests regions with highest biodiversity, but are strongly threatened by deforestation. Cryptogams (bryophytes and lichens) are common and characteristic organisms in these forests, are sensitive to envi...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Jorge Déleg, S. Robbert Gradstein, Gregorio Aragón, Paolo Giordani, Ángel Benítez
Formato: article
Lenguaje:EN
Publicado: Elsevier 2021
Materias:
Acceso en línea:https://doaj.org/article/161911b5f4404c389aa3eb9add16c6ae
Etiquetas: Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
id oai:doaj.org-article:161911b5f4404c389aa3eb9add16c6ae
record_format dspace
spelling oai:doaj.org-article:161911b5f4404c389aa3eb9add16c6ae2021-12-01T04:55:11ZCryptogamic epiphytes as indicators of successional changes in megadiverse lowland rain forests of western Amazonia1470-160X10.1016/j.ecolind.2021.107890https://doaj.org/article/161911b5f4404c389aa3eb9add16c6ae2021-10-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21005550https://doaj.org/toc/1470-160XThe Amazonian rain forests of Yasuni National Park, Ecuador (YNP), count among the world's forests regions with highest biodiversity, but are strongly threatened by deforestation. Cryptogams (bryophytes and lichens) are common and characteristic organisms in these forests, are sensitive to environmental changes, and are considered effective ecological indicators. The objective of this study was to explore the response of epiphytic cryptogams to forest succession in the Amazonian forests of YNP. We hypothesized that alteration of structural and micro-environmental characteristics of the forest, including reduction of canopy cover and lowering of tree species richness, lead to a reduction of species richness and changes in species composition of epiphytic cryptogams. We assessed species richness and composition of cryptogams on the bases of 442 trees in three stage of forest succession (early, intermediate, late), using generalized linear mixed models, multivariate analysis, beta diversity components and Mantel test. We registered 146 species of cryptogams, including 50 of lichens and 96 of bryophytes (39 mosses, 57 liverworts). Diversity of epiphytic cryptogams was highest in late succession forest, and lowest in early succession forest. Major changes in species richness and composition correlated with changes in canopy openness relative to the shift from early to late stages of forest succession. The results demonstrate for the first time the importance of tree species richness for cryptogamic epiphyte richness in Amazonian rain forests. Maintenance of high tree species diversity and structural heterogeneity in late succession forests can considerably contribute to the conservation of the cryptogamic epiphytes of Amazonian rain forests.Jorge DélegS. Robbert GradsteinGregorio AragónPaolo GiordaniÁngel BenítezElsevierarticleAlpha diversityBeta diversityBryophytesYasuni National ParkLichensTropical forestsEcologyQH540-549.5ENEcological Indicators, Vol 129, Iss , Pp 107890- (2021)
institution DOAJ
collection DOAJ
language EN
topic Alpha diversity
Beta diversity
Bryophytes
Yasuni National Park
Lichens
Tropical forests
Ecology
QH540-549.5
spellingShingle Alpha diversity
Beta diversity
Bryophytes
Yasuni National Park
Lichens
Tropical forests
Ecology
QH540-549.5
Jorge Déleg
S. Robbert Gradstein
Gregorio Aragón
Paolo Giordani
Ángel Benítez
Cryptogamic epiphytes as indicators of successional changes in megadiverse lowland rain forests of western Amazonia
description The Amazonian rain forests of Yasuni National Park, Ecuador (YNP), count among the world's forests regions with highest biodiversity, but are strongly threatened by deforestation. Cryptogams (bryophytes and lichens) are common and characteristic organisms in these forests, are sensitive to environmental changes, and are considered effective ecological indicators. The objective of this study was to explore the response of epiphytic cryptogams to forest succession in the Amazonian forests of YNP. We hypothesized that alteration of structural and micro-environmental characteristics of the forest, including reduction of canopy cover and lowering of tree species richness, lead to a reduction of species richness and changes in species composition of epiphytic cryptogams. We assessed species richness and composition of cryptogams on the bases of 442 trees in three stage of forest succession (early, intermediate, late), using generalized linear mixed models, multivariate analysis, beta diversity components and Mantel test. We registered 146 species of cryptogams, including 50 of lichens and 96 of bryophytes (39 mosses, 57 liverworts). Diversity of epiphytic cryptogams was highest in late succession forest, and lowest in early succession forest. Major changes in species richness and composition correlated with changes in canopy openness relative to the shift from early to late stages of forest succession. The results demonstrate for the first time the importance of tree species richness for cryptogamic epiphyte richness in Amazonian rain forests. Maintenance of high tree species diversity and structural heterogeneity in late succession forests can considerably contribute to the conservation of the cryptogamic epiphytes of Amazonian rain forests.
format article
author Jorge Déleg
S. Robbert Gradstein
Gregorio Aragón
Paolo Giordani
Ángel Benítez
author_facet Jorge Déleg
S. Robbert Gradstein
Gregorio Aragón
Paolo Giordani
Ángel Benítez
author_sort Jorge Déleg
title Cryptogamic epiphytes as indicators of successional changes in megadiverse lowland rain forests of western Amazonia
title_short Cryptogamic epiphytes as indicators of successional changes in megadiverse lowland rain forests of western Amazonia
title_full Cryptogamic epiphytes as indicators of successional changes in megadiverse lowland rain forests of western Amazonia
title_fullStr Cryptogamic epiphytes as indicators of successional changes in megadiverse lowland rain forests of western Amazonia
title_full_unstemmed Cryptogamic epiphytes as indicators of successional changes in megadiverse lowland rain forests of western Amazonia
title_sort cryptogamic epiphytes as indicators of successional changes in megadiverse lowland rain forests of western amazonia
publisher Elsevier
publishDate 2021
url https://doaj.org/article/161911b5f4404c389aa3eb9add16c6ae
work_keys_str_mv AT jorgedeleg cryptogamicepiphytesasindicatorsofsuccessionalchangesinmegadiverselowlandrainforestsofwesternamazonia
AT srobbertgradstein cryptogamicepiphytesasindicatorsofsuccessionalchangesinmegadiverselowlandrainforestsofwesternamazonia
AT gregorioaragon cryptogamicepiphytesasindicatorsofsuccessionalchangesinmegadiverselowlandrainforestsofwesternamazonia
AT paologiordani cryptogamicepiphytesasindicatorsofsuccessionalchangesinmegadiverselowlandrainforestsofwesternamazonia
AT angelbenitez cryptogamicepiphytesasindicatorsofsuccessionalchangesinmegadiverselowlandrainforestsofwesternamazonia
_version_ 1718405646979694592