Effects of landscape disturbance on seed germination of Enterolobium contortisiliquum (Fabaceae) in Brazilian seasonally tropical dry forest: Are seeds a sensitive biomarker of environmental stress?

Habitat disturbance of native forests is currently the major threat to biodiversity conservation. Plant species can be negatively affected as a result of landscape conversion; thus, it is essential to detect the potential effects of environmental stress on plant performance using reliable bioindicat...

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Autores principales:	Isabela Botelho Cardoso, Marina do Vale Beirão, Pablo Cuevas-Reyes, Yurixhi Maldonado-López, Joan Sebastian Aguilar-Peralta, Patrícia de Abreu Moreira
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Seed fluctuating asymmetry Land-use change Seed germination Tropical dry forest Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/996307aaaef24bacb78b8b5b286fce77
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spelling	oai:doaj.org-article:996307aaaef24bacb78b8b5b286fce772021-12-01T04:46:32ZEffects of landscape disturbance on seed germination of Enterolobium contortisiliquum (Fabaceae) in Brazilian seasonally tropical dry forest: Are seeds a sensitive biomarker of environmental stress?1470-160X10.1016/j.ecolind.2021.107451https://doaj.org/article/996307aaaef24bacb78b8b5b286fce772021-06-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21001163https://doaj.org/toc/1470-160XHabitat disturbance of native forests is currently the major threat to biodiversity conservation. Plant species can be negatively affected as a result of landscape conversion; thus, it is essential to detect the potential effects of environmental stress on plant performance using reliable bioindicators of quick, cheap diagnosis. Fluctuating asymmetry (FA) describes the degree of the random differences in shape and size among two sides of a bilateral trait of the organisms and reflects the developmental instability of an organism, so we can use it to predict the effects on plant fitness. We evaluated the land-use change stress on seed FA levels, seed germination, and the subsequent seedling development of seed produced by trees that occur in an anthropized and a preserved area of seasonally tropical dry forests (STDF) in Brazil. We sampled 10 ten reproductive trees of Enterolobium contortisiliquum of each landscape condition, and then, 100 seeds per each tree were collected. Additionally, 50 seeds were randomly selected for each tree to determine plant fitness. Despite, we found no true FA in the community, the anthropized area had a lower seed nutritional quality and percentage of germination, and higher germination time of seeds produced than in preserved areas. The dry weight of the aerial part of seedlings did not differ between areas. However, root dry weight and total dry weight were higher in seedlings developed from seeds of anthropized than in preserved areas. Our findings show that seeds of E. contortisiliquum are not a sensitive biomarker to detect full stress conditions of habitat disturbance. However, we demonstrate that habitat disturbance negatively affects plant fitness, decreasing germination percentage, and nutritional quality, and increasing germination time. This fact has potential consequences on recruitment, establishment and survival of E. contortisiliquum in regenerating areas of STDF’s in Brazil.Isabela Botelho CardosoMarina do Vale BeirãoPablo Cuevas-ReyesYurixhi Maldonado-LópezJoan Sebastian Aguilar-PeraltaPatrícia de Abreu MoreiraElsevierarticleSeed fluctuating asymmetryLand-use changeSeed germinationTropical dry forestEcologyQH540-549.5ENEcological Indicators, Vol 125, Iss , Pp 107451- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Seed fluctuating asymmetry Land-use change Seed germination Tropical dry forest Ecology QH540-549.5
spellingShingle	Seed fluctuating asymmetry Land-use change Seed germination Tropical dry forest Ecology QH540-549.5 Isabela Botelho Cardoso Marina do Vale Beirão Pablo Cuevas-Reyes Yurixhi Maldonado-López Joan Sebastian Aguilar-Peralta Patrícia de Abreu Moreira Effects of landscape disturbance on seed germination of Enterolobium contortisiliquum (Fabaceae) in Brazilian seasonally tropical dry forest: Are seeds a sensitive biomarker of environmental stress?
description	Habitat disturbance of native forests is currently the major threat to biodiversity conservation. Plant species can be negatively affected as a result of landscape conversion; thus, it is essential to detect the potential effects of environmental stress on plant performance using reliable bioindicators of quick, cheap diagnosis. Fluctuating asymmetry (FA) describes the degree of the random differences in shape and size among two sides of a bilateral trait of the organisms and reflects the developmental instability of an organism, so we can use it to predict the effects on plant fitness. We evaluated the land-use change stress on seed FA levels, seed germination, and the subsequent seedling development of seed produced by trees that occur in an anthropized and a preserved area of seasonally tropical dry forests (STDF) in Brazil. We sampled 10 ten reproductive trees of Enterolobium contortisiliquum of each landscape condition, and then, 100 seeds per each tree were collected. Additionally, 50 seeds were randomly selected for each tree to determine plant fitness. Despite, we found no true FA in the community, the anthropized area had a lower seed nutritional quality and percentage of germination, and higher germination time of seeds produced than in preserved areas. The dry weight of the aerial part of seedlings did not differ between areas. However, root dry weight and total dry weight were higher in seedlings developed from seeds of anthropized than in preserved areas. Our findings show that seeds of E. contortisiliquum are not a sensitive biomarker to detect full stress conditions of habitat disturbance. However, we demonstrate that habitat disturbance negatively affects plant fitness, decreasing germination percentage, and nutritional quality, and increasing germination time. This fact has potential consequences on recruitment, establishment and survival of E. contortisiliquum in regenerating areas of STDF’s in Brazil.
format	article
author	Isabela Botelho Cardoso Marina do Vale Beirão Pablo Cuevas-Reyes Yurixhi Maldonado-López Joan Sebastian Aguilar-Peralta Patrícia de Abreu Moreira
author_facet	Isabela Botelho Cardoso Marina do Vale Beirão Pablo Cuevas-Reyes Yurixhi Maldonado-López Joan Sebastian Aguilar-Peralta Patrícia de Abreu Moreira
author_sort	Isabela Botelho Cardoso
title	Effects of landscape disturbance on seed germination of Enterolobium contortisiliquum (Fabaceae) in Brazilian seasonally tropical dry forest: Are seeds a sensitive biomarker of environmental stress?
title_short	Effects of landscape disturbance on seed germination of Enterolobium contortisiliquum (Fabaceae) in Brazilian seasonally tropical dry forest: Are seeds a sensitive biomarker of environmental stress?
title_full	Effects of landscape disturbance on seed germination of Enterolobium contortisiliquum (Fabaceae) in Brazilian seasonally tropical dry forest: Are seeds a sensitive biomarker of environmental stress?
title_fullStr	Effects of landscape disturbance on seed germination of Enterolobium contortisiliquum (Fabaceae) in Brazilian seasonally tropical dry forest: Are seeds a sensitive biomarker of environmental stress?
title_full_unstemmed	Effects of landscape disturbance on seed germination of Enterolobium contortisiliquum (Fabaceae) in Brazilian seasonally tropical dry forest: Are seeds a sensitive biomarker of environmental stress?
title_sort	effects of landscape disturbance on seed germination of enterolobium contortisiliquum (fabaceae) in brazilian seasonally tropical dry forest: are seeds a sensitive biomarker of environmental stress?
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/996307aaaef24bacb78b8b5b286fce77
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Effects of landscape disturbance on seed germination of Enterolobium contortisiliquum (Fabaceae) in Brazilian seasonally tropical dry forest: Are seeds a sensitive biomarker of environmental stress?

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