Regeneration of riparian forests of the Brazilian Pantanal under flood and fire influence

Oliveira, Maiby Teodoro de; Junior, Geraldo Alves Damasceno; Pott, Arnildo; Filho, Antônio Conceição Paranhos; Súarez, Yzél Rondon; Parolin, Pia

doi:10.1016/j.foreco.2014.08.011

Cited by 65 publications

(51 citation statements)

References 33 publications

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“…Burned black water flood forest sites remain dominated for years by low shrubs, forbs, sedges and grasses, all susceptible to reburning (Woods, 1989;Ritter et al, 2012). Oliveira et al (2014) found an interaction between fire and flooding in reducing the abundance and richness of regenerating plants; fire killed young individuals, while inundation slowed recolonization by tree seedlings.…”

Section: Fire Damage and Susceptibilitymentioning

confidence: 91%

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Contrasting fire damage and fire susceptibility between seasonally flooded forest and upland forest in the Central Amazon using portable profiling LiDAR

Almeida

Nelson

Schietti

et al. 2016

Remote Sensing of Environment

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Section: Fire Damage and Susceptibilitymentioning

confidence: 91%

“…The role of fire in black water flood forest in the central Amazon has until recently been little studied (Oliveira et al, 2014;Resende et al, 2014) and is little known in wider academic circles. For example, fire was not mentioned in a recent review of threats to Amazonian freshwater ecosystems (Castello et al, 2013).…”

Section: Future Of Black Water Forestsmentioning

confidence: 99%

Contrasting fire damage and fire susceptibility between seasonally flooded forest and upland forest in the Central Amazon using portable profiling LiDAR

Almeida

Nelson

Schietti

et al. 2016

Remote Sensing of Environment

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“…Fires occurring in the SDTF-cerrado savanna mosaics of Chiquitanía today are primarily caused by humans clearing land for agricultural purposes. The seasonally wet and dry climate, with a June-October dry season, coupled with edaphic and hydrologic controls on vegetation composition and structure, support large wildfires during the driest years, when there is abundant dry biomass [9]. However, a serious cause for concern among tropical ecologists and conservation biologists is that anthropogenic fires are becoming increasingly common, not only burning in savannas, but spreading into SDTF [10].…”

mentioning

confidence: 99%

Fire, climate and vegetation linkages in the Bolivian Chiquitano seasonally dry tropical forest

Power

Whitney

Mayle

et al. 2016

Phil. Trans. R. Soc. B

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One contribution of 24 to a discussion meeting issue 'The interaction of fire and mankind'. South American seasonally dry tropical forests (SDTFs) are critically endangered, with only a small proportion of their original distribution remaining. This paper presents a 12 000 year reconstruction of climate change, fire and vegetation dynamics in the Bolivian Chiquitano SDTF, based upon pollen and charcoal analysis, to examine the resilience of this ecosystem to drought and fire. Our analysis demonstrates a complex relationship between climate, fire and floristic composition over multi-millennial time scales, and reveals that moisture variability is the dominant control upon community turnover in this ecosystem. Maximum drought during the Early Holocene, consistent with regional drought reconstructions, correlates with a period of significant fire activity between 8000 and 7000 cal yr BP which resulted in a decrease in SDTF diversity. As fire activity declined but severe regional droughts persisted through the Middle Holocene, SDTFs, including Anadenanthera and Astronium, became firmly established in the Bolivian lowlands. The trend of decreasing fire activity during the last two millennia promotes the idea among forest ecologists that SDTFs are threatened by fire. Our analysis shows that the Chiquitano seasonally dry biome has been more resilient to Holocene changes in climate and fire regime than previously assumed, but raises questions over whether this resilience will continue in the future under increased temperatures and drought coupled with a higher frequency anthropogenic fire regime.This article is part of the themed issue 'The interaction of fire and mankind'.

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“…This charcoal peak could indicate an increase in fire in the upland savannah that could have reinforced the climate-driven expansion of upland savannah at the expense of dry forest and a shift in the ecotone. The charcoal could also have been transported from fires within the semideciduous dry forest or dried-out areas of the Pantanal, where occasional fires are known to occur (Oliveira et al, 2014). As the majority of the particles were between 100 and 180 μm, they are likely to have been transported by wind from the same catchment as the wind-dispersed pollen found in the lake sediment.…”

Section: Dry Forest-upland Savannah Ecotone At Laguna Mandiorémentioning

confidence: 99%

Long-term impacts of mid-Holocene drier climatic conditions on Bolivian tropical dry forests

2019

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The Bolivian Chiquitano dry forest is the largest block of intact seasonally dry tropical forest in South America and is a priority ecoregion for conservation due to its high threat status. However, the long-term impacts of drier climatic conditions on tropical dry forests are not well understood, despite climate models predicting increased droughts over Bolivia in the coming century. In this paper, we assess the impacts of drier climatic conditions during the mid-Holocene on the Bolivian Chiquitano tropical dry forest using fossilised pollen, phytoliths, macro-charcoal, and geochemical proxies from a sediment core from a large lake (Laguna Mandioré) on the Bolivia–Brazil border. Our results show that drier climatic conditions during the mid-Holocene caused a local-scale, ecotonal expansion of upland savannah at the expense of dry forest. Interaction between drier climatic conditions and fire regime likely exerted a stronger control over the position of the dry forest–savannah ecotone than edaphic factors. However, the majority of the dry forest within the lake catchment maintained a closed canopy throughout the drier conditions of the mid-Holocene, despite floristic turnover towards more drought-tolerant taxa. These findings imply overall resilience of the Chiquitano dry forest biome to future drought, albeit with floristic changes and upland savannah encroachment at ecotones.

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Regeneration of riparian forests of the Brazilian Pantanal under flood and fire influence

Cited by 65 publications

References 33 publications

Contrasting fire damage and fire susceptibility between seasonally flooded forest and upland forest in the Central Amazon using portable profiling LiDAR

Contrasting fire damage and fire susceptibility between seasonally flooded forest and upland forest in the Central Amazon using portable profiling LiDAR

Fire, climate and vegetation linkages in the Bolivian Chiquitano seasonally dry tropical forest

Long-term impacts of mid-Holocene drier climatic conditions on Bolivian tropical dry forests

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