Stable carbon composition of vegetation and soils across an altitudinal range in the coastal Atlantic Forest of Brazil

Lins, Sílvia Rafaela Machado; Coletta, Luciana Della; Ravagnani, Elizabethe de Campos; Gragnani, Juliana Gonçalez; Mazzi, Edmar A.; Martinelli, Luiz Antônio

doi:10.1007/s00468-016-1368-7

Cited by 8 publications

(6 citation statements)

References 58 publications

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“…Exceptions to this trend were found during periods of drought or in drier regions of the tropics. As with Lins et al (2016), we noted no consistent change in δ 13 C along elevational gradients examined in this work. The average δ 13 C for our data was -29.8‰ and was similar to other investigations of tropical forest species (Vitousek et al 1990, Duarte et al 2005, Ometto et al 2006, Maricle et al 2011).…”

Section: Discussionsupporting

confidence: 56%

Stable isotope ratios and reforestation potential in Acacia koa populations on Hawai’i

Lawson

Pike

2017

Ann. For. Res.

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Lawson S. S., Pike C. C. 2017. Stable isotope ratios and reforestation potential in Acacia koa populations on Hawai'i. Ann. For. Res. 60(2): 279-295.Abstract. Stable carbon and nitrogen isotopes can be influenced by a multitude of factors including elevation, precipitation rate, season, and temperature. This work examined variability in foliar stable carbon (δ13C) and nitrogen (δ15N) isotope ratios of koa (Acacia koa) across 17 sites on Hawai'i Island, delineated by elevation and precipitation gradients. Sites were identified and grouped with respect to mean annual precipitation (MAP), mean annual temperature (MAT) and position along three elevation transects. Analysis of resultant δ13C and δ15N isotope ratios from multiple individuals across ecoregions indicated certain regions exhibited a correlation between carbon and/or nitrogen content, isotope ratios, precipitation, and elevation however, many comparisons showed no correlation. We used publicly available temperature and moisture data to help eliminate confounding effects by climatic drivers and capture possible points of contention. At sites where the temperature, precipitation, and elevation data were not significantly different, we compared stable isotope information to determine if additional variables might have contributed to a lack of definitive data. Our results identified several areas within the Waiakea Forest Reserve and Volcanoes National Park where, based on isotope analyses, reforestation efforts could be most successfully initiated.

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Section: Discussionsupporting

confidence: 56%

Stable isotope ratios and reforestation potential in Acacia koa populations on Hawai’i

Lawson

Pike

2017

Ann. For. Res.

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“…Previous studies have shown, variously, that Δ 13 C l (and hence iWUE) did not change (Lins et al., 2016; Wang et al., 2010), decreased (in humid climates, e.g. Hultine & Marshall, 2000; Körner et al., 1991; Marshall & Zhang, 1994) or increased (in arid or semi‐arid regions, e.g.…”

Section: Discussionmentioning

confidence: 95%

Land‐use legacies influence tree water‐use efficiency and nitrogen availability in recently established European forests

et al. 2021

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Forest regrowth following farmland (agriculture and pasture) abandonment has been positively associated with a number of processes including the regulation of hydrological cycling, the enhancement of soil functioning and an increase in forest productivity and carbon (C) sequestration. Although these changes in ecosystem functioning post‐farmland abandonment have been observed in multiple locations and studies, the ecophysiological basis underpinning these patterns remains unclear. Here, we examine whether increased forest expansion following pastureland abandonment is associated with greater water‐use efficiency (WUE) and legacies from previous land use in terms of nitrogen (N) availability. We thus explored differences in leaf traits and N availability between recently established (post‐1950) beech Fagus sylvatica (L.) forests on former pastureland and long‐established beech forests (pre‐1950). The investigated leaf traits were SLA, leaf N concentration (%N) and intrinsic WUE (iWUE, i.e. the ratio between photosynthesis and stomatal conductance); as well, leaf and soil stable N isotope composition (δ15N) and total %N were used to assess changes in N availability. Finally, we compared the correlation strength between the above‐mentioned parameters and those associated with tree productivity (wood density and basal area increment, BAI) and the richness of ectomycorrhizal fungi (ECM) in these two forest types. Recent forests had greater iWUE than long‐established forests, which was associated more with lower SLA than leaf %N. Leaf and soil δ15N were more robust proxies than %N for detecting differences in N availability. Less negative leaf and soil δ15N values in recent versus long‐established forests suggest, on the one hand, greater N availability, probably due to higher historical N input originating from animal excreta on these former pasturelands, and, on the other hand, an increase in N loss pathways. Our results point to greater correlations between leaf δ15N, tree iWUE and productivity in recent forests than in long‐established forests, thereby suggesting a close link between C and N cycles. Our findings also highlight different N dynamics between the two forest types, with recent forests showing ‘leaky’ N cycling wherever lower N retention by trees and associated ECM fungi occurs as a legacy of previous land use. A free Plain Language Summary can be found within the Supporting Information of this article.

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“…Os valores δ 15 N foliar encontrados em florestas tropicais são caracteristicamente enriquecidos em 15 N do que aqueles de florestas temperadas (MARTINELLI et al, 1999 A maior disponibilidade de nitrogênio em altitudes menores, onde a temperatura seria maior, aumentando as taxas de decomposição está associada a um aumento nas perdas gasosas, principalmente por desnitrificação, e enriquecimento em 15 N do solo (SOUSA NETO et al, 2011). Com a profundidade o carbono do solo é mais antigo e mais processado pelos microrganismos no solo (EHLERINGER et al, 2002;BOSTRÖMETAL, 2007;SOLLINS et al, 2009;BRUNN et al, 2014;LINS et al, 2016). Estudos conduzidos por Martins 2010 (SCARANO, 2002;RIBEIRO et al, 2011).…”

Section: Hipótesesunclassified

“…Baixos valores de δ 13 C foliar observados em florestas tropicais em relação a outros biomas parecem, desse modo, ser consequência da disponibilidade de água. Pois em climas tropicais, as chuvas são abundantes e levam ao aumento na condutância estomática em relação à taxa de assimilação de carbono e isso conduz a um aumento no c i e redução nos valores de δ 13 C em plantas (FARQUHAR et al, 1989;DIEFENDORF et al, 2010;LINS et al, 2016).…”

Section: Indicadores Isotópicosunclassified

“…Essa mesma tendência foi encontrada em diversos outros estudos conduzidos em biomas brasileiros (NARDOTO, 2005;MELO, 2003;DORTZBACH et al, 2015;LINS et al, 2016). As seguintes causas são atribuídas a essa variação: (i) à decomposição de substratos orgânicos, cujos produtos microbianos tornar-seiam mais enriquecidos em δ 13 C em comparação aos substratos; (ii) à eluviação da matéria orgânica ao longo do perfil do solo contribuiria para o acúmulo de material rico em 13 C nas camadas mais profundas; (iii) à ocorrência de pequenas variações inter e intramoleculares de δ 13 C nas plantas e nos organismos; (iv) às variações climáticas globais e locais, onde os Entre os valores de δ 13 C obtidos para cada um desses compartimentos em estudos na Floresta Atlântica (MARTINS, 2010;LINS et al, 2016; e este estudo) e em Floresta Amazônica de terra-firme (OMETTO et al, 2006) ambas com níveis de PMA acima de 1900 mm -não foram encontradas diferenças significativas, ainda que estas áreas de florestas estudadas apresentem balanço hídrico diferenciado. Em áreas de Floresta Atlântica paulista, o fator declividade, potencial discriminante da dinâmica hídrica dessa formação florestal, parece ter baixa influência sobre o escoamento superficial, que é pequeno devido à predominância de chuvas orográficas de baixa intensidade, da estação seca ser relativamente pequena, quando em comparação com áreas de terra-firme Amazônica, e da alta capacidade de infiltração da superfície do solo, sendo assim o escoamento subterrâneo é a principal via hidrológica de deflúvio (GROPPO, 2010).…”

Section: Composição Isotópica De Carbono Em Planta E Solounclassified

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Estoques e fluxos de carbono e nitrogênio acima e abaixo do solo em fragmentos de Floresta Atlântica no sul do Brasil

Silva¹

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A Deus e à vida pelas oportunidades e desafios. Aos meus pais, Seu Antonio e Dona Lori, pela educação que me deram, pelo apoio e carinho, mas acima de tudo, pela paciência. À minha família pelo encorajamento e pelo "ainda não terminou isso aí?". Dona Marilaine, Gringo, Salomão, Dona Laudicéia e João Guilherme (acredite), suas atitudes e palavras, cada um da sua maneira, foram (e são) essenciais. À professora Virgínia, pelo carinho, por acreditar em mim, por estar sempre presente, pelos conselhos e conquistas. Agradeço de coração. Ao meu orientador Luiz Antonio Martinelli (Zebu), por acreditar e confiar em mim. Ao Programa de Pós-Graduação do CENA e ao CNPq, pelo apoio ao longo dessa caminha e concessão da bolsa de estudos. Aos meus amigos, que quando perguntei "embarca em mais essa loucura comigo?", responderam "quando começamos?". Karinzinha, Professora Cynthia, Juliana... sabem que sempre podem contar comigo! Agradeço seu carinho, paciência e apoio. Vocês são demais! Ao "Marcão Velho": aos trancos e barrancos (literalmente), conseguimos!

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Stable carbon composition of vegetation and soils across an altitudinal range in the coastal Atlantic Forest of Brazil

Cited by 8 publications

References 58 publications

Stable isotope ratios and reforestation potential in Acacia koa populations on Hawai’i

Stable isotope ratios and reforestation potential in Acacia koa populations on Hawai’i

Land‐use legacies influence tree water‐use efficiency and nitrogen availability in recently established European forests

Estoques e fluxos de carbono e nitrogênio acima e abaixo do solo em fragmentos de Floresta Atlântica no sul do Brasil

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