Earthquake-Related Changes in Species Spatial Niche Overlaps in Spring Communities

Abstract Species interactions between stygobites (obligate groundwater organisms) are poorly known, reflecting the difficulty in studying such organisms in their natural environments. Some insight can be gained from the study of the spatial variability in microcrustacean communities in groundwater-f...

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Autores principales:	Simone Fattorini, Paola Lombardo, Barbara Fiasca, Alessia Di Cioccio, Tiziana Di Lorenzo, Diana M. P. Galassi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/133e8dda260b470ca806cb0f885336fd
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spelling	oai:doaj.org-article:133e8dda260b470ca806cb0f885336fd2021-12-02T16:08:08ZEarthquake-Related Changes in Species Spatial Niche Overlaps in Spring Communities10.1038/s41598-017-00592-z2045-2322https://doaj.org/article/133e8dda260b470ca806cb0f885336fd2017-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00592-zhttps://doaj.org/toc/2045-2322Abstract Species interactions between stygobites (obligate groundwater organisms) are poorly known, reflecting the difficulty in studying such organisms in their natural environments. Some insight can be gained from the study of the spatial variability in microcrustacean communities in groundwater-fed springs. Earthquakes can increase hydraulic conductivity in the recharge area of karstic aquifers and flow rates in discharge zones, thus dislodging stygobites from their original habitats to the spring outlets. Earthquakes are expected to alter species spatial niche overlap at the spring outlets, where stygobites coexist with non-stygobites living in benthic and subsurface habitats. We compared the abundance of stygobiotic and non-stygobiotic microcrustaceans in groundwater-fed springs before and after the 6.3-Mw earthquake that hit the karstic Gran Sasso Aquifer (Italy) in 2009. Pre-seismic (1997, 2005) overall niche overlaps were not different from null expectations, while post-seismic (2012) species mean niche overlaps were higher, following the redistribution of animals caused by the earthquake-triggered discharge. The reduced abundance of stygobites following their dislodgement from the aquifer and the concomitant displacement of non-stygobites led to a higher post-seismic co-occurrence of stygobites and non-stygobites. Changes in aquifer structure destroyed pre-seismic species segregation patterns by creating new or strengthening already existing interactions.Simone FattoriniPaola LombardoBarbara FiascaAlessia Di CioccioTiziana Di LorenzoDiana M. P. GalassiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Simone Fattorini Paola Lombardo Barbara Fiasca Alessia Di Cioccio Tiziana Di Lorenzo Diana M. P. Galassi Earthquake-Related Changes in Species Spatial Niche Overlaps in Spring Communities
description	Abstract Species interactions between stygobites (obligate groundwater organisms) are poorly known, reflecting the difficulty in studying such organisms in their natural environments. Some insight can be gained from the study of the spatial variability in microcrustacean communities in groundwater-fed springs. Earthquakes can increase hydraulic conductivity in the recharge area of karstic aquifers and flow rates in discharge zones, thus dislodging stygobites from their original habitats to the spring outlets. Earthquakes are expected to alter species spatial niche overlap at the spring outlets, where stygobites coexist with non-stygobites living in benthic and subsurface habitats. We compared the abundance of stygobiotic and non-stygobiotic microcrustaceans in groundwater-fed springs before and after the 6.3-Mw earthquake that hit the karstic Gran Sasso Aquifer (Italy) in 2009. Pre-seismic (1997, 2005) overall niche overlaps were not different from null expectations, while post-seismic (2012) species mean niche overlaps were higher, following the redistribution of animals caused by the earthquake-triggered discharge. The reduced abundance of stygobites following their dislodgement from the aquifer and the concomitant displacement of non-stygobites led to a higher post-seismic co-occurrence of stygobites and non-stygobites. Changes in aquifer structure destroyed pre-seismic species segregation patterns by creating new or strengthening already existing interactions.
format	article
author	Simone Fattorini Paola Lombardo Barbara Fiasca Alessia Di Cioccio Tiziana Di Lorenzo Diana M. P. Galassi
author_facet	Simone Fattorini Paola Lombardo Barbara Fiasca Alessia Di Cioccio Tiziana Di Lorenzo Diana M. P. Galassi
author_sort	Simone Fattorini
title	Earthquake-Related Changes in Species Spatial Niche Overlaps in Spring Communities
title_short	Earthquake-Related Changes in Species Spatial Niche Overlaps in Spring Communities
title_full	Earthquake-Related Changes in Species Spatial Niche Overlaps in Spring Communities
title_fullStr	Earthquake-Related Changes in Species Spatial Niche Overlaps in Spring Communities
title_full_unstemmed	Earthquake-Related Changes in Species Spatial Niche Overlaps in Spring Communities
title_sort	earthquake-related changes in species spatial niche overlaps in spring communities
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/133e8dda260b470ca806cb0f885336fd
work_keys_str_mv	AT simonefattorini earthquakerelatedchangesinspeciesspatialnicheoverlapsinspringcommunities AT paolalombardo earthquakerelatedchangesinspeciesspatialnicheoverlapsinspringcommunities AT barbarafiasca earthquakerelatedchangesinspeciesspatialnicheoverlapsinspringcommunities AT alessiadicioccio earthquakerelatedchangesinspeciesspatialnicheoverlapsinspringcommunities AT tizianadilorenzo earthquakerelatedchangesinspeciesspatialnicheoverlapsinspringcommunities AT dianampgalassi earthquakerelatedchangesinspeciesspatialnicheoverlapsinspringcommunities
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Earthquake-Related Changes in Species Spatial Niche Overlaps in Spring Communities

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