Evidence of facilitation between early‐successional tree species and the regenerating plant community in a tropical seasonally dry environment

2021 ◽  
Author(s):  
Diego Sales Lucas ◽  
Dayana Maria Pereira de Oliveira ◽  
Ellen Cristina Dantas Carvalho ◽  
Arlete Aparecida Soares ◽  
Roberta Boscaini Zandavalli
Keyword(s):  
Plant Community ◽  
Tree Species ◽  
Seasonally Dry

scholarly journals El Niño-Southern Oscillation affects the water relations of tree species in the Yucatan Peninsula, Mexico

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jorge Palomo-Kumul ◽  
Mirna Valdez-Hernández ◽  
Gerald A. Islebe ◽  
Manuel J. Cach-Pérez ◽  
José Luis Andrade
Keyword(s):  
Water Potential ◽  
Leaf Area ◽  
Tropical Forests ◽  
Specific Leaf Area ◽  
Tree Species ◽  
Deciduous Species ◽  
Mature Trees ◽  
Seasonally Dry ◽  
Seasonally Dry Tropical Forests ◽  
Dry Tropical Forests

AbstractWe evaluated the effect of ENSO 2015/16 on the water relations of eight tree species in seasonally dry tropical forests of the Yucatan Peninsula, Mexico. The functional traits: wood density, relative water content in wood, xylem water potential and specific leaf area were recorded during the rainy season and compared in three consecutive years: 2015 (pre-ENSO conditions), 2016 (ENSO conditions) and 2017 (post-ENSO conditions). We analyzed tree size on the capacity to respond to water deficit, considering young and mature trees, and if this response is distinctive in species with different leaf patterns in seasonally dry tropical forests distributed along a precipitation gradient (700–1200 mm year−1). These traits showed a strong decrease in all species in response to water stress in 2016, mainly in the driest site. Deciduous species had lower wood density, higher predawn water potential and higher specific leaf area than evergreen species. In all cases, mature trees were more tolerant to drought. In the driest site, there was a significant reduction in water status, regardless of their leaf phenology, indicating that seasonally dry tropical forests are highly vulnerable to ENSO. Vulnerability of deciduous species is intensified in the driest areas and in the youngest trees.

Propagating framework tree species to restore seasonally dry tropical forest: implications of seasonal seed dispersal and dormancy

2002 ◽  
Vol 164 (1-3) ◽  
pp. 31-38 ◽  
Author(s):  
David Blakesley ◽  
Stephen Elliott ◽  
Cherdsak Kuarak ◽  
Puttipong Navakitbumrung ◽  
Sudarat Zangkum ◽  
...  
Keyword(s):  
Seed Dispersal ◽  
Tropical Forest ◽  
Tree Species ◽  
Seasonally Dry Tropical Forest ◽  
Dry Tropical Forest ◽  
Seasonally Dry

scholarly journals Tree species richness and diversity of the seasonally dry forest in Central Depression of Chiapas

2010 ◽  
Vol 87 ◽  
pp. 89 ◽  
Author(s):  
Ana Guadalupe Rocha-Loredo ◽  
Neptalí Ramírez-Marcial ◽  
Mario González-Espinosa
Keyword(s):  
Species Richness ◽  
Tree Species ◽  
Dry Forest ◽  
Seasonally Dry ◽  
Species Richness And Diversity ◽  
Central Depression ◽  
Tree Species Richness ◽  
Seasonally Dry Forest

scholarly journals Role of Anthropogenic drivers in altering the forest community structure in a prime tiger habitat in central India

2021 ◽  
Author(s):  
Soumya Dasgupta ◽  
Tapajit Bhattacharya ◽  
Prafulla Bhamburkar ◽  
Rahul Kaul
Keyword(s):  
Plant Community ◽  
Tree Species ◽  
Deciduous Forest ◽  
Species Abundance ◽  
Central India ◽  
Forest Community ◽  
Anthropogenic Factors ◽  
Importance Value Index ◽  
Forest Patches ◽  
Individual Tree

Tropical forests are complex systems with heterogenous community assemblages often threatened under conservation conflicts. Herbivory and disturbances affect the diversity and species assemblages within forest patches having different disturbance regimes. We studied the change in plant community composition and structure under a disturbance gradient in the tropical dry deciduous forest of the corridor area between Nagzira-Navegaon Tiger reserve of central India. We tested the hypothesis that the plant community will change along the proximity gradient from the human settlement depending on the anthropogenic stress. We sampled 183 nested quadrat plots to collect data on species abundance and various disturbance parameters. Density, diversity, and Importance Value Index were calculated from the collected data on species abundance and girth at breast height (GBH) of individual tree species. We did multivariate analysis to assess the changes in species assemblage along the disturbance gradients. We found 76% dissimilarity between the plant communities in the three disturbance gradients from near to far from the villages perpetrated by the difference in mean abundance of species like Tectona grandis, Terminalia sp, and Largerstroemia parviflora. The anthropogenic factors significantly influence the density and diversity of tree species and regeneration classes. We found the abundance of regeneration class increased along the distance from the villages. The study intensifies the need for proper management and conservative approach to preserve the minimum diversity of the forest patches for its structural and functional contiguity as a corridor in the central India's highly susceptible and intricate corridor framework.

scholarly journals Tree species diversity in a seasonally-dry forest: the case of the Pinkaití site, in the Kayapó Indigenous Area, Southeastern limits of the Amazon

2004 ◽  
Vol 34 (3) ◽  
pp. 435-443 ◽  
Author(s):  
Rodolfo Salm
Keyword(s):  
Species Diversity ◽  
Forest Structure ◽  
Tree Species ◽  
Natural Disturbance ◽  
Dry Forest ◽  
Research Station ◽  
Tree Species Diversity ◽  
Seasonally Dry ◽  
Great Heterogeneity ◽  
History Of

This study investigates patterns of forest structure and tree species diversity in an anthropogenic palm grove and undisturbed areas at the seasonally-dry Pinkaití research station, in the Kayapó Indigenous Area. This site, managed by the Conservation International do Brasil, is the most southeastern site floristically surveyed in the Amazon until now. The secondary and a nearby undisturbed forest were sampled in a group of 52 floristic plots of 0.0625-ha (25x25-m) where all trees with DBH > 10 cm were measured and identified. The analyses were complemented with other two floristic plots of 1-ha (10x1000-m). The present study has shown that the Pinkaití, like other seasonally-dry forests, have great heterogeneity in forest structure and composition, associated with biotic characteristics of the most important tree species, natural disturbance and history of land-use. The palm grove, moderately dominated by the arborescent palm Attalea maripa (Aubl.) Mart., presented high tree species diversity and was floristically similar to undisturbed forests at the study site. It is discussed the importance of large arborescent palms for the seasonally-dry Amazon forests regeneration.

Commercial tree regeneration 6 years after high-intensity burns in a seasonally dry forest in Bolivia

2004 ◽  
Vol 34 (11) ◽  
pp. 2199-2207 ◽  
Author(s):  
Deborah Kennard
Keyword(s):  
Tree Species ◽  
High Intensity ◽  
Cost Effective ◽  
Tree Regeneration ◽  
Dry Forest ◽  
Burn Treatment ◽  
Tree Species Composition ◽  
Competing Vegetation ◽  
Seasonally Dry ◽  
Seasonally Dry Forest

The effects of three site-preparation treatments (high-intensity burn, low-intensity burn, and mechanical cleaning with machetes and chainsaws) on the regeneration of commercial tree species, composition and structure of competing vegetation, and soil chemical and structural properties were evaluated in a seasonally dry forest in southeast Bolivia. Six years after controlled burns, the high-intensity burn treatment had the both the highest density and the tallest individuals of shade-intolerant commercial tree species. Competing vegetation was also less dominant in the high-intensity burn treatment relative to other treatments. However, high-intensity burns were not beneficial for commercial tree species with shade-tolerant or intermediate regeneration. Soil analyses revealed that certain changes in soil texture and soil chemistry (e.g., Ca and Mg concentrations and cation exchange capacity) caused by high-intensity burns persisted 6 years after the fires. These findings confirm that this suite of shade-intolerant commercial species requires very intense disturbances for their regeneration. However, several ecological, economic, and social barriers currently preclude the management-scale application of prescribed fire in Bolivia. More research is needed on cost-effective treatments to improve regeneration.

Patterns of seed rain and seedling regeneration in abandoned agricultural clearings in a seasonally dry tropical forest in India

2009 ◽  
Vol 26 (1) ◽  
pp. 25-33 ◽  
Author(s):  
Karthik Teegalapalli ◽  
Ankila J. Hiremath ◽  
Devcharan Jathanna
Keyword(s):  
Tropical Forest ◽  
Tree Species ◽  
Forest Edge ◽  
Forest Recovery ◽  
Agricultural Fields ◽  
Chromolaena Odorata ◽  
Seasonally Dry Tropical Forest ◽  
Dry Tropical Forest ◽  
Seasonally Dry ◽  
Over Time

Abstract:Forest recovery in abandoned pastures and agricultural fields is often impeded, therefore it is important to understand the factors limiting regeneration. Patterns of seed arrival and regeneration in five abandoned agricultural clearings nested within a seasonally dry tropical forest in India were examined along five transects radiating from the forest edge into the clearings. Wind-dispersed seeds dominated the seed arrival in clearings compared with vertebrate-dispersed seeds: 5563 wind-dispersed seeds and 1094 vertebrate-dispersed seeds of 14 and 13 tree species, respectively, were recorded. Numbers of the former declined steeply with increasing distance from the forest, whereas the latter showed no evident pattern with distance. Seeds of the invasive herb, Chromolaena odorata, were abundant in clearings. Although wind-dispersed seeds greatly outnumbered vertebrate-dispersed seeds, seedlings and saplings of vertebrate-dispersed species were three times more abundant than those of wind-dispersed species, indicating distinct differences in patterns of actual and effective seed dispersal. This points to recruitment limitation, and suggests that seed arrival may not be the principal barrier to regeneration in these clearings. Nonetheless, the clearings are likely to revert to forest over time.

Responses to mechanical wounding and fire in tree species characteristic of seasonally dry tropical forest of Bolivia

2003 ◽  
Vol 33 (2) ◽  
pp. 330-338 ◽  
Author(s):  
Tim Schoonenberg ◽  
Michelle Pinard ◽  
Stephen Woodward
Keyword(s):  
Tropical Forest ◽  
Tree Species ◽  
High Intensity ◽  
Boundary Zone ◽  
Short Term ◽  
Dry Tropical Forest ◽  
Seasonally Dry ◽  
Low Intensity ◽  
Wood Discoloration ◽  
Bark Damage

Short-term responses to stem wounding were measured over a 60-day period on six tree species found in seasonally dry tropical forest in Bolivia. Three types of wounds were inflicted to simulate mechanical bark damage and bark damage caused by low- and high-intensity fires. Extent of wood discoloration associated with wounding varied with wound type and severity, with high-intensity burns associated with the greatest amount of discoloration, low-intensity burns the least, and mechanical wounds intermediate. Two thin-barked species produced a distinct ligno suberised boundary zone in the bark earlier than thicker barked species; however, all species produced a distinct wound periderm by 60 days postwounding. The amount of wood discoloration associated with wounding appeared to be independent of the thickness of the lignosuberized boundary zone. Bark thickness provided a useful measure of species' resistance to wood discoloration with low-intensity burns but not with high-intensity burns where bark occasionally separated from the cambium or developed cracks and fissures. Variability in short-term responses to wounding and other factors may result in differences in the composition and abundance of microorganisms that colonize the wounds, with implications for reductions in wood quality and decay development.

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