Spatial-temporal variation in litterfall in seasonally dry tropical forests in Northeastern Brazil

Araújo, Virgínia; Barbosa, Maria Regina de Vasconcellos; Araújo, Joamira Pereira de; Vasconcellos, Alexandre

doi:10.1590/1519-6984.192113

Cited by 8 publications

(8 citation statements)

References 49 publications

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“…This result reveals the synchronism incorporated by the different functional groups in the study site, likely to minimize drought-related damage in trees. Similar results were observed in other tropical dry forests with different dry season intensities (Araújo et al 2019, Souza et al 2019.…”

Section: Discussionsupporting

confidence: 90%

“…The occurrence of a nearly 5-month long dry season in the study region implies the prevalence of functional groups adapted to water scarcity during forest succession (Araújo et al 2019). The most abundant and dominant tree species in the site have a set of functional traits that reinforce this prevalence, including high wood density (> 0.6 g cm -3 ) and leaf senescence during the dry season (Zhang et al 2014, Lorenzoni-Paschoa et al 2019, Oliveira et al 2019.…”

Section: Discussionmentioning

confidence: 89%

“…Leaf litter production is an important indicator of primary production in SDTFs (Campo & Merino 2016, Moonen et al 2019. Accumulated leaf litter, mainly during the dry season, represents a nutrient reserve which favors tree growth in the next growing season (Araújo et al 2019, Souza et al 2019. Studies have shown a positive relationship between soil nutrient availability and the deposition of biomass, carbon, and nutrients on the forest floor (Heineman et al 2016, Voigtlaender et al 2019.…”

Section: Introductionmentioning

confidence: 99%

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Contribution of legume and non-legume trees to litter dynamics and C-N-P inputs in a secondary seasonally dry tropical forest

Neves¹,

Paula²,

Araujo³

et al. 2022

iForest

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Many studies have investigated nutrient cycling in seasonally dry tropical forests, but few have assessed the contribution of different functional groups to these processes. Here, we investigated general litter dynamics patterns and the contribution of legume and non-legume trees to litter dynamics and carbon (C), nitrogen (N), and phosphorus (P) inputs in a fragment of secondary seasonally dry tropical forest after half a century of forest succession in the Atlantic Forest biome in Brazil. Between 2016 and 2017, we quantified litterfall production, canopy cover, forest floor, and soil C and N storage in 11 permanent plots distributed in the fragment. Vegetation identity and structure had been previously assessed. We quantified the seasonal inputs of leaf litter and C, N, and P separately for each functional group (legume and non-legume tree species). We also analyzed the correlations between the variables measured for each functional group with the variables measured at the plot level. Litter dynamics and nutrient input were affected by climate and functional group. Litterfall production during the two driest months was three times higher than during the other periods of the year, suggesting that species synchronicity is likely to minimize drought-related damage on trees. Legume trees had twice the basal area attained by non-legume trees, but while legumes were larger, non-legumes were more abundant and dominant in the smaller diameter class. Legumes deposited twice as much N during the driest period of the year as non-legumes. Although leaf litter, C, and P inputs by legumes were generally higher than those of non-legumes, these differences during the dry season were not statistically significant. We also found that the legume variables correlated better with the plot-level variables, compared to the non-legume functional group. Our results also indicated potential effects of the leaf litter and nutrient inputs by the legume functional group on the decomposition constant and, consequently, on the time of forest floor decomposition. Further studies should assess the role of different functional groups in litter dynamics and nutrient inputs in seasonally dry tropical forests.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

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Contribution of legume and non-legume trees to litter dynamics and C-N-P inputs in a secondary seasonally dry tropical forest

Neves¹,

Paula²,

Araujo³

et al. 2022

iForest

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“…In Open Clusia Formation, leaf litterfall showed little change across the 12-years, tending to peak in winter or spring, what corresponds to the dry season as found across some other restinga sites (Table 2). This is also a common pattern in tropical forests (Araújo et al 2019, Chave et al 2010, Martinelli et al 2017, Rowland et al 2014, 2018, Wagner et al 2016, Zhang et al 2014, even in sites where the seasonal drought is not so strong (Morellato et al 2000). This pattern may have evolved as a plant strategy that results in reduced water stress during drier and warmer periods (Nepstad et al 2002, Wright & Cornejo 1990, and sometimes it is associated to a simultaneous leaf production process, using nutrients re-captured from senescent leaves before abscission (Jackson 1978).…”

Section: Restingamentioning

confidence: 92%

Precipitation Deficits and High Temperature Increase Leaf Litterfall in Open Restinga Vegetation, in Southern Brazil

et al. 2020

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Climate is an important driver of litterfall along different ecosystems. However, little is known about how climate affects litter production in plant communities of Restinga. The aim of this study is to characterize the temporal variation in leaf litter production in an Open Clusia Formation in Restinga de Jurubatiba National Park, from 2001 to 2018, and assess how local variability in litter production reflects the local climatic conditions and its variability. We tested the hypothesis that monthly leaf litterfall increases in dry months and in drier and warmer than average months; we also evaluated if annual leaf litterfall increases in wetter and warmer years following leaf production patterns, that increases in these conditions. We found that litterfall peaks in the drier months. This pattern is consistent for many tropical ecosystems, even evergreen ecosystems, and may have evolved as a strategy that result in reduced water stress by plants, during drier and warmer periods, or may simply be a stress symptom. However, we also found that decreases in monthly rainfall and increases in monthly ∆Temperature (temperature observed minus estimated based on 1970-2000 interval) stimulate leaf litter production. Hot and warmer than average years also seem to stimulate leaf litterfall. It suggests that annual leaf litterfall and leaf production are less affected by precipitation regimes than variations in temperature (or radiation, which is directly related to temperature). It may result from the fact that Clusia hilariana, the dominant species in this ecosystem which accounts to 80 % of leaf litterfall, is a CAM photosynthesis species, a characteristic commonly associated with avoidance of water stress by plants. Although leaf litterfall seems to be predominantly driven by climate at annual scale, only 15 % of its variation was associated to climate at seasonal scale, suggesting that local factors control litterfall at lower temporal scales in Open Clusia Formation.

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“…O maior número de estudos sobre o aporte de serapilheira ocorreu por meio do monitoramento dessa variável como indicador dos processos funcionais da comunidade florestal, além de observar as características adaptativas após impactos antrópicos ou naturais que ocorreram em determinado ecossistema [76,82,83]. O aporte destaca-se como um eficaz indicador de restauração florestal pois está diretamente relacionado à Produtividade Primária Líquida (PPL) da floresta [84].…”

Section: Aporte E Estoque De Serapilheiraunclassified

Aporte e estoque de serapilheira no Brasil: uma análise bibliométrica da produção científica de 2008 a 2019

et al. 2021

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A ciclagem de nutrientes é um processo chave na manutenção de florestas tropicais. A importância da serapilheira na ciclagem de nutrientes é um tema relevante e vem se tornando a base de diversos estudos nas últimas décadas. Com o objetivo de realizar uma análise quali-quantitativa sobre os estudos de serapilheira no Brasil, foi realizada uma bibliometria da produção científica no período de 2008-2019. Analisamos 119 artigos, distribuídos em 19 periódicos. O ano de 2015 apresentou o maior número de publicação com 18 artigos. O estado do Rio de Janeiro representou 13,45% da produção cientifica, e o bioma Mata Atlântica concentrou 55,72% das publicações, o que pode estar relacionado à presença das Fundações de Apoio à Pesquisa que mais investem na ciência brasileira. Mais da metade das publicações realizaram pesquisas em apenas um ecossistema. Do total de publicações, 71,4% quantificou o aporte da serapilheira, enquanto 21,9% o estoque. Os maiores valores de massa seca de serapilheira foram registrados no bioma Amazônia, com 8,32 ± 2,57 Mg ha-¹ ano-1 e nos ecossistemas caracterizados como floresta primária, com 8,19 ± 3,27 Mg ha-¹ ano-¹. Para o estoque, os estudos realizados no Cerrado apresentaram as maiores médias, com 7,24 ± 1,98 Mg ha-¹. Os resultados demonstraram que o número de publicações se concentra em determinadas regiões brasileiras. Além disso, percebem os que o maior número de estudos em ecossistemas de plantio monoespecífico e misto pode estar relacionado à importância ecológica e econômica para o Brasil.

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Spatial-temporal variation in litterfall in seasonally dry tropical forests in Northeastern Brazil

Cited by 8 publications

References 49 publications

Contribution of legume and non-legume trees to litter dynamics and C-N-P inputs in a secondary seasonally dry tropical forest

Contribution of legume and non-legume trees to litter dynamics and C-N-P inputs in a secondary seasonally dry tropical forest

Precipitation Deficits and High Temperature Increase Leaf Litterfall in Open Restinga Vegetation, in Southern Brazil

Aporte e estoque de serapilheira no Brasil: uma análise bibliométrica da produção científica de 2008 a 2019

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