Does regenerative strategy vary between populations? A test using a narrowly distributed Atlantic Rainforest palm species

Oda, Gabriela Akemi Macedo; Braz, Maria Isabel Guedes; Portela, Rita de Cássia Quitete

doi:10.1007/s11258-016-0612-y

Cited by 9 publications

(4 citation statements)

References 46 publications

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“…The observations suggested that species were associated with certain environmental characteristics along the gradient (Luz et al 2018). In tropical forests, altitude factor caused environmental changes especially in temperature and humidity, that shifted species composition along the gradient (Song et al 2013, Oda et al 2016, Luz et al 2018. Previous studies in the same area showed that litter accumulation, organic matter content and soil acidity explained these compositional shifts along the gradient (Araújo 2016, Abreu 2017.…”

Section: Discussionmentioning

confidence: 96%

“…The distribution of species in forest communities was linked to many factors including the variations in altitude (McCain & Grytnes 2010). Small shifts in altitude entailed changes in the local microclimate and influenced species germination and regeneration strategies (Oda et al 2016). However, patterns of species richness and density in seed banks along altitudinal gradients were still unclear.…”

Section: Introductionmentioning

confidence: 99%

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The Soil Seed Bank as an Indicator of Altitudinal Gradient in a Montane Tropical Forest

Abreu¹,

Dias²,

Kunz³

et al. 2021

JTFS

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The study was conducted in a portion of tropical montane forest in the Caparaó National Park, Brazil. The aim of this work was to assess the changes in seed bank composition, density and richness along an altitudinal gradient and across seasons, and to analyse the floristic links between the forest soil seed bank, seed rain, regeneration layer and adult tree layer. The seed bank data were collected in the dry and rainy seasons at seven different elevations, ranging from 1112 -1550 m above sea level. The floristic relationships were analysed through the species lists derived from previous studies at these same locations. The results showed seed density and species richness varied among different elevations, but did not vary with gradient. Seed bank density and richness varied significantly across seasons, with the highest averages found in the rainy season. In the floristic composition, the higher elevations showed more similar composition than to the lower elevations. Seed bank composition was floristically different from the seed rain, the regeneration layer and the adult tree layer of the forest. Our results showed that the soil seed bank was influenced by both altitude and environmental seasonality. The findings highlighted the importance soil seed bank as a mechanism of post-disturbance forest regeneration.

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Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

The Soil Seed Bank as an Indicator of Altitudinal Gradient in a Montane Tropical Forest

Abreu¹,

Dias²,

Kunz³

et al. 2021

JTFS

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“…Some studies on populations have shown that seed germination characteristics can vary greatly in response to environmental factors (Spindelbock et al 2013;Oda et al 2016;Heidari et al 2019). Banksia species, for example, showed decreased and delayed seed germination with increasing water stress; however, the germination responses to drought stress differed between populations (Cochrane et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of seed germination to water stress in high‐altitude populations of a threatened palm species

et al. 2023

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Divergence in seed germination patterns among populations of the same species is important for understanding plant responses to environmental gradients and potential plant sensitivity to climate change. In order to test responses to flooding and decreasing water potentials, over 3 years we germinated and grew seeds from three habitats of Euterpe edulis Mart. occurring along an altitudinal gradient. Seed germination and root growth were evaluated under different water availability treatments: control, flood, −0.4 MPa, −0.8 MPa, in the years 2012, 2013 and 2014, and in the final year of the experiment (2014) at −1.0 MPa and −1.5 MPa. Seeds from the montane habitat did not germinate in the flooding treatment. Seed germination of all three habitats decreased in the −1.5 MPa treatment and the montane habitat had lowest germination in this treatment. Time required for half of the seeds to germinate increased up to −0.8 MPa. Seeds from montane habitats germinated more slowly in all treatments. The only difference in seed germination synchrony was an increase in the submontane population under the flooding treatment. However, synchrony decreased at the lowest water potentials. Roots of the montane population were more vigorous in most treatments, except at −0.8 MPa. The unusual ability of these seeds to germinate at low water potentials might be related to early seed germination at the onset of the rainy season, which potentially decreases seed predation pressure. Seeds of the montane population were more sensitive to both types of water stress. A predicted increase in the frequency and intensity of extreme high rainfall or drought events may predispose early stages of this population to adverse factors that might negatively affect population viability with elevational in future climate change scenarios.

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“…The regeneration capacity and species composition in a plant community, in addition to being profoundly affected by the presence of progenitors, is directly associated with local environmental factors, such as light radiation, atmospheric temperature, rainfall, and soil characteristics (Dupuy and Chazdon 2008; Boukili and Chazdon 2017). These environmental factors can change intensely with altitude variation (McCain and Grytnes 2010; Oda et al 2016). This environmental heterogeneity linked to altitude can generate distinct patterns of species distribution for each location (Souza et al 2013).…”

Section: Introductionmentioning

confidence: 99%

How environmental factors condition natural regeneration in the altitudinal gradient of a montane rainforest

Duarte

Abreu

Dias

et al. 2022

Preprint

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The variation of abiotic factors, and the plant species response to it, influence the regeneration capacity and, consequently, the structure of the forest community. The aim of this study is to describe the structure of the regenerating stratum and investigate its relationship with environmental and spatial variables along an altitudinal gradient. This study was carried out in the Santa Marta valley, state of Espírito Santo, Brazil. Data on height and diameter at soil height of regenerating individuals and environmental variables were collected in seven altitudinal quotas; and spatial variables (Moran’s Eigenvector Maps) were created based on geographic coordinates. Phytosociological parameters were calculated by species and the floristic similarity between the altitudinal quota were determined, as well as the species that characterize each group. Redundancy Analysis (RDA) was performed, and generalized linear models were adjusted to verify the influence of environmental and spatial factors on regenerating vegetation. The specie Palicourea sessilis presented the highest Importance Value. The formation of two floristic groups was verified, with 11 species indicative of the higher quota group (1,420 to 1,550 m) and only one of the second group (1,112 to 1,391 m). The first two axes of the RDA explained 51.02% of the variation in the floristic composition. The natural regeneration demonstrated environmental preferences, being influenced by luminosity, abundance in adult components, contents of calcium and sodium, plant litter accumulation, altitude, and spatial structure of the environment. The altitude did not seem to influence a pattern in abundance or richness of regenerating species.

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Does regenerative strategy vary between populations? A test using a narrowly distributed Atlantic Rainforest palm species

Cited by 9 publications

References 46 publications

The Soil Seed Bank as an Indicator of Altitudinal Gradient in a Montane Tropical Forest

The Soil Seed Bank as an Indicator of Altitudinal Gradient in a Montane Tropical Forest

Sensitivity of seed germination to water stress in high‐altitude populations of a threatened palm species

How environmental factors condition natural regeneration in the altitudinal gradient of a montane rainforest

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