Anthropogenic disturbances alter the relationships between environmental heterogeneity and biodiversity of stream insects

The effects of anthropogenic disturbance on multiple facets of biodiversity are poorly understood. In this study, we worked with the hypothesis that anthropogenic disturbances affect the relationship between environmental heterogeneity (EH) and biodiversity. We used a model selection approach to tes...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Janaina Agra, Raphael Ligeiro, Jani Heino, Diego R. Macedo, Diego M.P. Castro, Marden S. Linares, Marcos Callisto
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Habitat heterogeneity Beta diversity Taxonomic diversity Functional diversity Neotropical savanna Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/67e7794a45c3420aa8793cce412dc5a7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:67e7794a45c3420aa8793cce412dc5a7
record_format	dspace
spelling	oai:doaj.org-article:67e7794a45c3420aa8793cce412dc5a72021-12-01T04:34:25ZAnthropogenic disturbances alter the relationships between environmental heterogeneity and biodiversity of stream insects1470-160X10.1016/j.ecolind.2020.107079https://doaj.org/article/67e7794a45c3420aa8793cce412dc5a72021-02-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20310189https://doaj.org/toc/1470-160XThe effects of anthropogenic disturbance on multiple facets of biodiversity are poorly understood. In this study, we worked with the hypothesis that anthropogenic disturbances affect the relationship between environmental heterogeneity (EH) and biodiversity. We used a model selection approach to test three predictions. P1: The greater the level of anthropogenic disturbance, the weaker will be the relationship between EH and both taxonomic and functional alpha diversities. P2: The sign and strength of correlations between EH metrics and both taxonomic and functional alpha diversities will depend on the level of anthropogenic disturbance. P3: Taxonomic and functional beta diversities will not respond to the EH gradient. We sampled 76 stream sites in the Brazilian Neotropical savanna and collected insect of the orders Ephemeroptera, Plecoptera and Trichoptera to measure taxonomic and functional alpha and beta diversities. For P1, we did not find a trend of decreasing strength of this relationship with increasing disturbance. Results confirmed P2. Spatial flow diversity was positively correlated to taxonomic and functional alpha diversities in least-disturbed sites. Bankfull height variation was negatively correlated to taxonomic and functional alpha diversities in moderately-disturbed sites. Thalweg depth variation was positively correlated to taxonomic and functional alpha diversities in most-disturbed sites. Results partially confirmed P3 because taxonomic and functional beta diversities correlated with EH metrics in most-disturbed sites. We conclude that the biodiversity-EH relationship is not the same at all levels of anthropogenic disturbance, a finding that has implications for biomonitoring and ecosystem management.Janaina AgraRaphael LigeiroJani HeinoDiego R. MacedoDiego M.P. CastroMarden S. LinaresMarcos CallistoElsevierarticleHabitat heterogeneityBeta diversityTaxonomic diversityFunctional diversityNeotropical savannaEcologyQH540-549.5ENEcological Indicators, Vol 121, Iss , Pp 107079- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Habitat heterogeneity Beta diversity Taxonomic diversity Functional diversity Neotropical savanna Ecology QH540-549.5
spellingShingle	Habitat heterogeneity Beta diversity Taxonomic diversity Functional diversity Neotropical savanna Ecology QH540-549.5 Janaina Agra Raphael Ligeiro Jani Heino Diego R. Macedo Diego M.P. Castro Marden S. Linares Marcos Callisto Anthropogenic disturbances alter the relationships between environmental heterogeneity and biodiversity of stream insects
description	The effects of anthropogenic disturbance on multiple facets of biodiversity are poorly understood. In this study, we worked with the hypothesis that anthropogenic disturbances affect the relationship between environmental heterogeneity (EH) and biodiversity. We used a model selection approach to test three predictions. P1: The greater the level of anthropogenic disturbance, the weaker will be the relationship between EH and both taxonomic and functional alpha diversities. P2: The sign and strength of correlations between EH metrics and both taxonomic and functional alpha diversities will depend on the level of anthropogenic disturbance. P3: Taxonomic and functional beta diversities will not respond to the EH gradient. We sampled 76 stream sites in the Brazilian Neotropical savanna and collected insect of the orders Ephemeroptera, Plecoptera and Trichoptera to measure taxonomic and functional alpha and beta diversities. For P1, we did not find a trend of decreasing strength of this relationship with increasing disturbance. Results confirmed P2. Spatial flow diversity was positively correlated to taxonomic and functional alpha diversities in least-disturbed sites. Bankfull height variation was negatively correlated to taxonomic and functional alpha diversities in moderately-disturbed sites. Thalweg depth variation was positively correlated to taxonomic and functional alpha diversities in most-disturbed sites. Results partially confirmed P3 because taxonomic and functional beta diversities correlated with EH metrics in most-disturbed sites. We conclude that the biodiversity-EH relationship is not the same at all levels of anthropogenic disturbance, a finding that has implications for biomonitoring and ecosystem management.
format	article
author	Janaina Agra Raphael Ligeiro Jani Heino Diego R. Macedo Diego M.P. Castro Marden S. Linares Marcos Callisto
author_facet	Janaina Agra Raphael Ligeiro Jani Heino Diego R. Macedo Diego M.P. Castro Marden S. Linares Marcos Callisto
author_sort	Janaina Agra
title	Anthropogenic disturbances alter the relationships between environmental heterogeneity and biodiversity of stream insects
title_short	Anthropogenic disturbances alter the relationships between environmental heterogeneity and biodiversity of stream insects
title_full	Anthropogenic disturbances alter the relationships between environmental heterogeneity and biodiversity of stream insects
title_fullStr	Anthropogenic disturbances alter the relationships between environmental heterogeneity and biodiversity of stream insects
title_full_unstemmed	Anthropogenic disturbances alter the relationships between environmental heterogeneity and biodiversity of stream insects
title_sort	anthropogenic disturbances alter the relationships between environmental heterogeneity and biodiversity of stream insects
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/67e7794a45c3420aa8793cce412dc5a7
work_keys_str_mv	AT janainaagra anthropogenicdisturbancesaltertherelationshipsbetweenenvironmentalheterogeneityandbiodiversityofstreaminsects AT raphaelligeiro anthropogenicdisturbancesaltertherelationshipsbetweenenvironmentalheterogeneityandbiodiversityofstreaminsects AT janiheino anthropogenicdisturbancesaltertherelationshipsbetweenenvironmentalheterogeneityandbiodiversityofstreaminsects AT diegormacedo anthropogenicdisturbancesaltertherelationshipsbetweenenvironmentalheterogeneityandbiodiversityofstreaminsects AT diegompcastro anthropogenicdisturbancesaltertherelationshipsbetweenenvironmentalheterogeneityandbiodiversityofstreaminsects AT mardenslinares anthropogenicdisturbancesaltertherelationshipsbetweenenvironmentalheterogeneityandbiodiversityofstreaminsects AT marcoscallisto anthropogenicdisturbancesaltertherelationshipsbetweenenvironmentalheterogeneityandbiodiversityofstreaminsects
_version_	1718405846830940160

Anthropogenic disturbances alter the relationships between environmental heterogeneity and biodiversity of stream insects

Ejemplares similares