Nitrogen cycling during secondary succession in Atlantic Forest of Bahia, Brazil

Abstract Carbon accumulation in tropical secondary forests may be limited in part by nitrogen (N) availability, but changes in N during tropical forest succession have rarely been quantified. We explored N cycle dynamics across a chronosequence of secondary tropical forests in the Mata Atlântica of...

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Autores principales:	Joy B. Winbourne, Aida Feng, Lovinia Reynolds, Daniel Piotto, Meredith G. Hastings, Stephen Porder
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/13d6ea6dee404ca4acf7e6cf2670b2ef
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spelling	oai:doaj.org-article:13d6ea6dee404ca4acf7e6cf2670b2ef2021-12-02T15:08:05ZNitrogen cycling during secondary succession in Atlantic Forest of Bahia, Brazil10.1038/s41598-018-19403-02045-2322https://doaj.org/article/13d6ea6dee404ca4acf7e6cf2670b2ef2018-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-19403-0https://doaj.org/toc/2045-2322Abstract Carbon accumulation in tropical secondary forests may be limited in part by nitrogen (N) availability, but changes in N during tropical forest succession have rarely been quantified. We explored N cycle dynamics across a chronosequence of secondary tropical forests in the Mata Atlântica of Bahia, Brazil in order to understand how quickly the N cycle recuperates. We hypothesized that N fixation would decline over the course of succession as N availability and N gaseous losses increased. We measured N fixation, KCl-extractable N, net mineralization and nitrification, resin-strip sorbed N, gaseous N emissions and the soil δ15N in stands that were 20, 35, 50, and > 50 years old. Contrary to our initial hypothesis, we found no significant differences between stand ages in any measured variable. Our findings suggest that secondary forests in this region of the Atlantic forest reached pre-disturbance N cycling dynamics after just 20 years of succession. This result contrasts with previous study in the Amazon, where the N cycle recovered slowly after abandonment from pasture reaching pre-disturbance N cycling levels after ~50 years of succession. Our results suggest the pace of the N cycle, and perhaps tropical secondary forest, recovery, may vary regionally.Joy B. WinbourneAida FengLovinia ReynoldsDaniel PiottoMeredith G. HastingsStephen PorderNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Joy B. Winbourne Aida Feng Lovinia Reynolds Daniel Piotto Meredith G. Hastings Stephen Porder Nitrogen cycling during secondary succession in Atlantic Forest of Bahia, Brazil
description	Abstract Carbon accumulation in tropical secondary forests may be limited in part by nitrogen (N) availability, but changes in N during tropical forest succession have rarely been quantified. We explored N cycle dynamics across a chronosequence of secondary tropical forests in the Mata Atlântica of Bahia, Brazil in order to understand how quickly the N cycle recuperates. We hypothesized that N fixation would decline over the course of succession as N availability and N gaseous losses increased. We measured N fixation, KCl-extractable N, net mineralization and nitrification, resin-strip sorbed N, gaseous N emissions and the soil δ15N in stands that were 20, 35, 50, and > 50 years old. Contrary to our initial hypothesis, we found no significant differences between stand ages in any measured variable. Our findings suggest that secondary forests in this region of the Atlantic forest reached pre-disturbance N cycling dynamics after just 20 years of succession. This result contrasts with previous study in the Amazon, where the N cycle recovered slowly after abandonment from pasture reaching pre-disturbance N cycling levels after ~50 years of succession. Our results suggest the pace of the N cycle, and perhaps tropical secondary forest, recovery, may vary regionally.
format	article
author	Joy B. Winbourne Aida Feng Lovinia Reynolds Daniel Piotto Meredith G. Hastings Stephen Porder
author_facet	Joy B. Winbourne Aida Feng Lovinia Reynolds Daniel Piotto Meredith G. Hastings Stephen Porder
author_sort	Joy B. Winbourne
title	Nitrogen cycling during secondary succession in Atlantic Forest of Bahia, Brazil
title_short	Nitrogen cycling during secondary succession in Atlantic Forest of Bahia, Brazil
title_full	Nitrogen cycling during secondary succession in Atlantic Forest of Bahia, Brazil
title_fullStr	Nitrogen cycling during secondary succession in Atlantic Forest of Bahia, Brazil
title_full_unstemmed	Nitrogen cycling during secondary succession in Atlantic Forest of Bahia, Brazil
title_sort	nitrogen cycling during secondary succession in atlantic forest of bahia, brazil
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/13d6ea6dee404ca4acf7e6cf2670b2ef
work_keys_str_mv	AT joybwinbourne nitrogencyclingduringsecondarysuccessioninatlanticforestofbahiabrazil AT aidafeng nitrogencyclingduringsecondarysuccessioninatlanticforestofbahiabrazil AT loviniareynolds nitrogencyclingduringsecondarysuccessioninatlanticforestofbahiabrazil AT danielpiotto nitrogencyclingduringsecondarysuccessioninatlanticforestofbahiabrazil AT meredithghastings nitrogencyclingduringsecondarysuccessioninatlanticforestofbahiabrazil AT stephenporder nitrogencyclingduringsecondarysuccessioninatlanticforestofbahiabrazil
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Nitrogen cycling during secondary succession in Atlantic Forest of Bahia, Brazil

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