Insight into climate change from the carbon exchange of biocrusts utilizing non-rainfall water

Abstract Biocrusts are model ecosystems of global change studies. However, light and non-rainfall water (NRW) were previously few considered. Different biocrust types further aggravated the inconsistence. So carbon-exchange of biocrusts (cyanobacteria crusts-AC1/AC2; cyanolichen crust-LC1; chlorolic...

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Autores principales:	Hailong Ouyang, Chunxiang Hu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/76bf469e3814472b940f5041d4270a82
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spelling	oai:doaj.org-article:76bf469e3814472b940f5041d4270a822021-12-02T11:40:31ZInsight into climate change from the carbon exchange of biocrusts utilizing non-rainfall water10.1038/s41598-017-02812-y2045-2322https://doaj.org/article/76bf469e3814472b940f5041d4270a822017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-02812-yhttps://doaj.org/toc/2045-2322Abstract Biocrusts are model ecosystems of global change studies. However, light and non-rainfall water (NRW) were previously few considered. Different biocrust types further aggravated the inconsistence. So carbon-exchange of biocrusts (cyanobacteria crusts-AC1/AC2; cyanolichen crust-LC1; chlorolichen crust-LC2; moss crust-MC) utilizing NRW at various temperatures and light-intensities were determined under simulated and insitu mesocosm experiments. Carbon input of all biocrusts were negatively correlated with experimental temperature under all light-intensity with saturated water and stronger light with equivalent NRW, but positively correlated with temperature under weak light with equivalent NRW. LCPs and R/Pg of AC1 were lowest, followed in turn by AC2, LC2 and MC. Thus AC1 had most opportunities to use NRW, and 2.5 °C warming did cause significant changes of carbon exchange. Structural equation models further revealed that air-temperature was most important for carbon-exchange of ACs, but equally important as NRW for LC2 and MC; positive influence of warming on carbon-input in ACs was much stronger than the latter. Therefore, temperature effect on biocrust carbon-input depends on both moisture and light. Meanwhile, the role of NRW, transitional states between ACs, and obvious carbon-fixation differences between lichen crusts should be fully considered in the future study of biocrusts responding to climate change.Hailong OuyangChunxiang HuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hailong Ouyang Chunxiang Hu Insight into climate change from the carbon exchange of biocrusts utilizing non-rainfall water
description	Abstract Biocrusts are model ecosystems of global change studies. However, light and non-rainfall water (NRW) were previously few considered. Different biocrust types further aggravated the inconsistence. So carbon-exchange of biocrusts (cyanobacteria crusts-AC1/AC2; cyanolichen crust-LC1; chlorolichen crust-LC2; moss crust-MC) utilizing NRW at various temperatures and light-intensities were determined under simulated and insitu mesocosm experiments. Carbon input of all biocrusts were negatively correlated with experimental temperature under all light-intensity with saturated water and stronger light with equivalent NRW, but positively correlated with temperature under weak light with equivalent NRW. LCPs and R/Pg of AC1 were lowest, followed in turn by AC2, LC2 and MC. Thus AC1 had most opportunities to use NRW, and 2.5 °C warming did cause significant changes of carbon exchange. Structural equation models further revealed that air-temperature was most important for carbon-exchange of ACs, but equally important as NRW for LC2 and MC; positive influence of warming on carbon-input in ACs was much stronger than the latter. Therefore, temperature effect on biocrust carbon-input depends on both moisture and light. Meanwhile, the role of NRW, transitional states between ACs, and obvious carbon-fixation differences between lichen crusts should be fully considered in the future study of biocrusts responding to climate change.
format	article
author	Hailong Ouyang Chunxiang Hu
author_facet	Hailong Ouyang Chunxiang Hu
author_sort	Hailong Ouyang
title	Insight into climate change from the carbon exchange of biocrusts utilizing non-rainfall water
title_short	Insight into climate change from the carbon exchange of biocrusts utilizing non-rainfall water
title_full	Insight into climate change from the carbon exchange of biocrusts utilizing non-rainfall water
title_fullStr	Insight into climate change from the carbon exchange of biocrusts utilizing non-rainfall water
title_full_unstemmed	Insight into climate change from the carbon exchange of biocrusts utilizing non-rainfall water
title_sort	insight into climate change from the carbon exchange of biocrusts utilizing non-rainfall water
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/76bf469e3814472b940f5041d4270a82
work_keys_str_mv	AT hailongouyang insightintoclimatechangefromthecarbonexchangeofbiocrustsutilizingnonrainfallwater AT chunxianghu insightintoclimatechangefromthecarbonexchangeofbiocrustsutilizingnonrainfallwater
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Insight into climate change from the carbon exchange of biocrusts utilizing non-rainfall water

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