Is litter decomposition influenced by forest size and invertebrate detritivores during the dry season in semiarid Chaco Serrano?

Bernaschini, María Laura; Moreno, María Laura; Pérez‐Harguindeguy, Natalia; Valladares, Graciela

doi:10.1016/j.jaridenv.2015.11.009

Cited by 13 publications

(9 citation statements)

References 22 publications

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“…Thus, during the dry season in Caatinga, plants lose their leaves as an adaptive mechanism to water stress to which they are submitted, hence the great contribution of leaf litter produced. Bernaschini et al (2016) in their study, questioned the fact that the litter decomposition had an influence on the size of the forest and the decomposition of invertebrates in the semiarid region of Argentina. Finally, they concluded that the first studies of the decomposition in these areas in the dry period did not succeed, that is, the size of the fragment did not affect the decomposition.…”

Section: Fimentioning

confidence: 96%

Contribution of Plant Litter in Fragments of Dry Tropical Forest in Paraíba

Araújo¹,

Souto²,

Souto³

et al. 2018

JAS

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Deposition of plant litter in the environment represents the entrance into the system, with reflection on soil organic matter content and environmental quality of the site. The objective of this study was to estimate the deposition, accumulation and decomposition of plant litter in preserved Caatinga vegetation, and the interference of climatic variability in the dynamics of these events. This research was developed in the Private Natural Heritage Reserve (RPPN), Tamanduá Farm, in the municipality of Santa Terezinha-PB, in a Caatinga area. Plant litter deposited in 20 twenty 1.0 m² litterfall traps of 1.0 m × 1.0 m was collected monthly (June/2014 to July/2015), covering the dry and rainy period of the region. The material was separated into leaves, branches + bark, reproductive material and miscellaneous material. Litter stock accumulated on the forest floor was quantified using a 0.5 m × 0.5 m metal frame to estimate decomposition rate of litter. We found that that leaves fraction obtained the highest deposition average in July 2014 with 395.80 kg ha-1 and the lowest in February/2015 with 9.5 kg ha-1. We concluded that that litter production obtained during the evaluation period was 2.2 mg ha-1, being the highest contribution of litter at the end of the rainy season of the region.

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Section: Fimentioning

confidence: 96%

Contribution of Plant Litter in Fragments of Dry Tropical Forest in Paraíba

Araújo¹,

Souto²,

Souto³

et al. 2018

JAS

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“…2019 DOI: doi.org/10.18671/scifor.v47n124.08 A maior taxa de decomposição no período de fevereiro a abril coincidiu com as menores quantidades de chuva na região. O mesmo foi visto por Bernaschini et al (2015) que descobriram um papel importante da fauna do solo durante a estação seca, quando se poderia esperar uma decomposição mais lenta devido ao fato das condições serem particularmente limitantes para este processo. Outra justificativa é que o acúmulo desses materiais no solo conserva a água e diminuem as variações de temperatura, favorecendo as atividades dos micro e macro-organismos na região, independente da época do ano, como avaliado por Machado (2011).…”

Section: Taxa De Decomposiçãounclassified

Avaliação do aporte de serapilheira e decomposição foliar como bioindicadores de ações de restauração na Mata Atlântica

Santos¹,

Junior²,

Caiafa³

et al. 2019

Sci. For.

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Para avaliação da efetividade das ações de restauração, o estudo de indicadores ecológicos torna-se necessário para verificação do potencial de sustentabilidade das áreas restauradas, dentre os processos ecológicos importantes para funcionalidade dos ecossistemas encontram-se o aporte de serapilheira e sua decomposição no solo. Este estudo objetivou avaliar como a deposição da serapilheira e a decomposição de detritos foliares são influenciadas pelas idades de restauração. Para isso, foram realizadas coletas mensais do material de serapilheira, tanto em áreas em processo de restauração como em ecossistema de referência. A produção de serapilheira foi menor nas áreas em processo de restauração, do que nos ecossistemas de referência. Contudo, o componente folha teve uma maior porcentagem nas áreas em restauração. As taxas de decomposição não apresentaram diferenças significativas entre as áreas de estudo, contudo houve diferenças quanto a variações temporais, sendo mais acelerada no período de seca, em todas as áreas.

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“…Since decomposer diversity usually decreases with the loss of available micro‐habitats like deadwood diversity and amount (Rantalainen et al 2005, Müller and Bütler 2010, Grilli et al 2017, Seibold et al 2017), decomposition may be slower in smaller (Moreno et al 2014) and more isolated habitats (Spiesman et al 2018). Yet some studies have reported either null (Bernaschini et al 2016) or positive (Schleuning et al 2011, Hertzog et al 2019) effects of habitat loss and isolation on the decomposition rates in terrestrial systems, suggesting a context–dependent relationship of habitat fragmentation and decomposition. Since decomposition studies are typically conducted in complex terrestrial habitats, the delineation of ‘island' from matrix and an understanding of the ecological responses to habitat loss and fragmentation may be hard to achieve due to the matrix‐type effects (Fahrig 2017, 2020).…”

Section: Introductionmentioning

confidence: 99%

Island size affects wood decomposition by changing decomposer distribution

Seibold

Zhen

et al. 2020

Ecography

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Island biogeography theory describes the relationship between island size, isolation and biodiversity, but it does not address the effects on ecosystem processes such as wood decomposition. Wood decomposition rates can be expected to increase with decomposer diversity, which increases with island size and decreases with increasing island isolation. However, island size and isolation effects on wood decomposition may also act by impacting substrate composition, forest composition and biotic interactions among decomposers. In this study, branch‐wood decomposition rates of three locally dominant tree species deployed at 154 plots on 15 islands in Thousand Island Lake, China, were measured over one year. The results showed that decomposition rates in coarse‐mesh bags where both termites and fungi were allowed access increased with island size for the two tree species preferred by the termites. By contrast, decomposition rates in fine‐mesh bags which only fungi could access decreased with island size for the two tree species preferred by fungi. The positive effects of island size on termite feeding activity were mediated by a higher deadwood diversity, a more diverse forest composition and a higher soil moisture content, with forest composition shaping soil moisture. For fungal diversity, the negative effects of island size were attributable to a higher soil moisture content and termite feeding activity. Island isolation decreased fungal diversity but increased wood decomposition rates. Our study indicates that island size affects wood decomposition by altering the distribution of decomposers and their relative contributions to wood decomposition. Size–decomposition relationship further depends on the affinity between substrates and decomposer taxa. In general, our results show that ecosystem processes may be affected by island size and isolation, but the patterns are more complex than expected from the island biogeography theory. This discrepancy is largely due to the different responses and trade‐offs among different functional groups.

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Is litter decomposition influenced by forest size and invertebrate detritivores during the dry season in semiarid Chaco Serrano?

Cited by 13 publications

References 22 publications

Contribution of Plant Litter in Fragments of Dry Tropical Forest in Paraíba

Contribution of Plant Litter in Fragments of Dry Tropical Forest in Paraíba

Avaliação do aporte de serapilheira e decomposição foliar como bioindicadores de ações de restauração na Mata Atlântica

Island size affects wood decomposition by changing decomposer distribution

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