Fine-scale effects of bamboo dominance on seed rain in a rainforest

Bona, Ketlen; Purificação, Keila Nunes; Vieira, Thiago Bernardi; Mews, Henrique Augusto

doi:10.1016/j.foreco.2020.117906

Cited by 12 publications

(8 citation statements)

References 52 publications

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“…The low number of seeds sampled in Area 3 may be related to the commercial eucalyptus planting. Monodominant areas such as eucalyptus stands or bamboo species massifs are reported as limiting barriers for fauna and seed rain dispersal (Marsden et al, 2001;Bona et al, 2020), the seed bank (Vinha et al, 2017) and natural regeneration (Felker et al, 2018). In addition, the eucalyptus matrix can hinder the circulation of native seeds of anemochorous dispersion, as it also acts as a barrier to wind circulation (Piña-Rodrigues & Aoki, 2014).…”

Section: Resultsmentioning

confidence: 99%

Seed rain as an ecological indicator of forest restoration in the Pampa biome

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Rovedder

Piaia

et al. 2020

Agraria

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This study evaluated seed rain in different forest formation soil uses in the Serra do Sudeste region, Pampa biome. Four area were selected: active restoration (Area 1), passive restoration (Area 2), eucalyptus commercial plantation (Area 3) and native forest (Area 4). Ten permanent collectors of 1 m² each were installed in each area, being suspended 1 meter above the soil surface. Collections were made monthly for twelve months in 2018. The analyzed variables were: the number of morphospecies, number of individuals, the indices of Margalef richness, Pielou evenness, Shannon diversity, Jaccard floristic similiarity, and possible correlations by detrended correspondence analysis (DCA). Total number of seeds sampled during the period was 239,988, distributed across 116 morphospecies. The area under active restoration (Area 1) did not differ statistically by the Kruskall-Wallis test (p < 0.05) of the native forest (Area 4) for the number of seeds. Area 1 presented a higher number of morphospecies and greater diversity of species, followed by Area 4. Seed rain can be a promising ecological indicator for the conditions of the present study.

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Section: Resultsmentioning

confidence: 99%

Seed rain as an ecological indicator of forest restoration in the Pampa biome

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Rovedder

Piaia

et al. 2020

Agraria

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“…The presence of dense populations of bamboos and other grasses also increases the flammability of the understory (D'Antônio & Vitousek, 1992), in addition to covering the soil and thus hindering natural regeneration and causing loss of the economic value of the forest over time (Bona et al., 2020; Edwards‐Widmer, 1999; Griscom & Ashton, 2003). This may be a trigger for the system to be trapped in either a grass‐dominated vegetation (Veldman & Putz, 2011) or in a fire‐dominated savanna state (Bond, 2008; Flores et al., 2016; Hoffman et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…Because of their strong underground rhizome system and the climbing nature of these woody bamboos promoting damage to trees, clearings can also trigger a self-perpetuating bamboo disturbance cycle in the forest over time, even in undisturbed areas (Griscom & Ashton, 2006;Medeiros et al, 2013). Bona et al (2020) point out that Guadua weberbaueri Pilg. acts as a filter for the establishment of trees in the understory, reducing the number of species dispersed via seed rain and affecting forest dynamics.…”

Section: Introductionmentioning

confidence: 99%

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Forest fires facilitate growth of herbaceous bamboos in central Amazonia

et al. 2021

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Severe droughts in Amazonia caused by El Niño and Atlantic dipole events are expected to become more frequent due to anthropogenic climate change. These droughts lead the tropical forests of central Amazonia to become increasingly exposed to fire. Forest-fire disturbances can create ideal scenarios for opportunistic plants, such as some bamboos. In this study, we investigate the influence of forest fires, canopy openness, and vertical distance to channel network (VDCN-a proxy for soil moisture availability) on the growth and expansion of Olyra latifolia and Taquara micrantha in the municipality of Autazes, Amazonas, Brazil. The density of these herbaceous bamboos was represented by the density of clumps (clumps ha -1 ) and of culms (culms ha -1 ), while bamboo growth was expressed as culms per clump and the average height of clumps. Forest disturbed by fire had a density of culms 116% higher than the value found in the control treatment. Plots affected by fire, which were at lower VDCN, showed evidence of higher potential for fire ignition in the low areas.The average number of culms per clump was significantly higher in post-burn forests. While canopy opening revealed a significant positive linear relationship with the abundance of herbaceous bamboo in our study area, VDCN had a negative effect on bamboo growth, suggesting that, in addition to fire, light in the understory and access to the water table are limiting factors for these two species in the upland forests of central Amazonia.

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“…For example, a recent study noted a decrease in the number of tree species dispersed via seed rain when Guadua weberbaueri Pilg. (Poaceae) is present in terra ‐ firme forest in southwestern Amazonia (Bona et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Community composition of tree and palm species following disturbance in a forest with bamboo in southwestern Amazonia, Brazil

Ziccardi

Graça

Figueiredo³

et al. 2021

Biotropica

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Anthropogenic disturbances such as selective logging and forest fires can cause further degradation in tropical forests. Various authors have suggested that logging and fire in southwestern Amazonia can increase bamboo abundance and contribute to slowing succession, but few studies have addressed community-composition patterns at either the local or the regional scale. We used a natural experiment with forest fire and post-burn logging to analyze the effects of increased bamboo abundance on the community composition of trees and palms in Brazil's Acre state in southwestern Amazonia. Bamboo abundance was expressed by variables collected both by field sampling and from high-resolution images using a remotely piloted aircraft (RPA). Disturbance in these forests was associated with a significant reduction in the number of crowns of emergent trees and palms and an increase in the canopy fraction occupied by bamboo. A significant negative relationship was observed between the canopy area occupied by bamboo and the number of tree and palm species, regardless of the level of disturbance. Bamboo density (culms m −2 ) and canopy area occupied by bamboo had significant effects on community composition, indicating that bamboo abundance is a key driver affecting the floristic composition of the forest.

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Fine-scale effects of bamboo dominance on seed rain in a rainforest

Cited by 12 publications

References 52 publications

Seed rain as an ecological indicator of forest restoration in the Pampa biome

Seed rain as an ecological indicator of forest restoration in the Pampa biome

Forest fires facilitate growth of herbaceous bamboos in central Amazonia

Community composition of tree and palm species following disturbance in a forest with bamboo in southwestern Amazonia, Brazil

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