Tree seedling establishment in dry tropics: an urgent need of interaction studies

Bhadouria, Rahul; Srivastava, Pratap; Singh, Rishi Pal; Tripathi, S. N.; Singh, H. K.; Raghubanshi, A. S.

doi:10.1007/s10669-017-9625-x

Cited by 31 publications

(20 citation statements)

References 159 publications

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“…Nutrient supplementation resulted in improvement in growth parameters, particularly TDW and NAR of tree seedlings of all the species under different light conditions. These observations indicate that in usually nutrient limited soils of tropical dry forests, addition of nutrients may have beneficial effect on tree seedling growth as reported by several studies (Barbosa, van Langevelde, et al, 2014; Barbosa, Tomlinson, et al, 2014; Bhadouria, Srivastava, et al, 2017; Khurana & Singh, 2004). Among species, A. catechu , A. nilotica and Z. mauritiana showed remarkable improvement in growth parameters after nutrient addition whereas T. arjuna showed comparatively less variation in growth behavior, except considerable increase in leaf‐P concentration even after nutrient supplementation as compared to other species.…”

Section: Discussionsupporting

confidence: 75%

“…Nutrient enrichment via N deposition may have adverse effects on plant community dynamics, especially if higher nutrient levels result in lower rates of tree seedlings recruitment in nutrient‐limited tropical dry forests. The presence or absence of grasses in these forests has a very crucial role in tree seedlings recruitment and overall vegetation dynamics (Bhadouria et al, 2018; Bhadouria, Srivastava, et al, 2017). The question is whether N deposition will affect this dynamics, and warrants further inquiry for tree species in tropical dry forests.…”

Section: Introductionmentioning

confidence: 99%

“…Grasses can be detrimental to tree seedlings growth because they compete better for the available above‐ (e.g., light) and below‐ground (e.g., nutrient) resources (Hardwick, Healey, & Blakesley, 2000; Hoffmann & Franco, 2003; Tomlinson et al, 2019). Moreover, studies suggest that tree seedlings respond differently to the availability of resources such as light, water and nutrients, and to competition from grasses, depending on their ecological and successional traits (i.e., pioneer and nonpioneer), N 2 ‐fixing ability, tree size and habitat preferences (Bhadouria et al, 2017; Chapin, 2003; Chaturvedi et al, 2012; Khurana & Singh, 2001; Tripathi et al, 2020; Tripathi, Bhadauria, Srivastava, Singh, & Raghubanshi, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Effects of grass competition on tree seedlings growth under different light and nutrient availability conditions in tropical dry forests in India

Bhadouria

Srivastava

Singh

et al. 2020

Ecological Research

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The interactive effects of light, nutrient availability and grass competition on seedlings of four tropical dry forest tree species, namely, Indian jujube (Ziziphus mauritiana), arjun (Terminalia arjuna), gum arabic (Acacia nilotica) and catechu (Acacia catechu), were evaluated in an experimental study at Banaras Hindu University, Varanasi, India. Full‐ and reduced‐ (20% of the full) sunlight, no‐nutrient and nutrient supplementation, and presence of grass and no‐grass conditions were taken in a split‐plot design to observe the effects on the plant growth and leaf nutrient parameters. We observed a significant interaction between light and nutrient availability on total dry weight and relative growth rate for the tree seedlings of all the species. Seedling growth was lower in presence of grass under full sunlight condition with/without nutrient addition, and also under reduced sunlight condition with nutrient addition. However, leaf‐N and ‐P concentration showed slight increase following nutrient addition across the species and light conditions. All the species responded positively to nutrient addition irrespective of light and grass conditions. Our study further indicates that nutrient addition under reduced light condition in tropical dry forests may be a possible strategy to ameliorate the negative impact of grasses on tree seedling growth. Overall, a better understanding of tree seedling establishment in the presence of grasses is of utmost importance for the development of management plans that may improve the diversity of tree species in tropical dry forests.

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Section: Discussionsupporting

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of grass competition on tree seedlings growth under different light and nutrient availability conditions in tropical dry forests in India

Bhadouria

Srivastava

Singh

et al. 2020

Ecological Research

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“…Amount of light available on the forest floor has been reported as a strategic environmental regulator which governs intrinsic growth behavior of residing plant species (Augspurger 1984;Walters and Reich 1996;Bhadouria et al 2018). Heterogeneity in the availability of light in a forest is associated with morphological and physiological adaptations, and therefore directly determines the species composition at community level (Lüttge et al 2002;Bhadouria et al 2016Bhadouria et al , 2017a. Valladares and Niinemets (2008) suggested that the understanding of species-specific response to acclimatize and grow in low-light environments will help in the assessment of ecosystem responses to global climate change.…”

Section: Introductionmentioning

confidence: 99%

Effects of light availability on leaf attributes and seedling growth of four tree species in tropical dry forest

et al. 2020

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Background: In tropical dry forests, variation in understory light availability due to season and canopy tree density could be a governing factor in establishment and growth of tree seedlings. Species with varying life history traits are expected to respond differentially to such heterogeneity. We investigated the response of seedlings of four tree species in a tropical day forest in relation to spatiotemporal variability of light. We attempt to explore the role of leaf attributes in explaining intra-and inter-specific variations in relative growth rate. Four study sites, each with three contrasting canopy conditions, were selected along a soil moisture gradient. Seedlings of four tree species (viz., Acacia catechu, Bridelia retusa, Lagerstroemia parviflora, and Shorea robusta), varying in life history traits, were monitored for seasonal variations in growth traits across canopy condition and sites for 2 years. Results: We observed a larger variation in leaf attributes for pioneer species. A. catechu showed highest mean values for leaf dry matter content, leaf nitrogen concentration, leaf phosphorus concentration, net stomatal conductance, net photosynthetic rate, and relative growth rate in high light conditions. S. robusta and B. retusa demonstrated highest mean values for all the leaf attributes (except leaf dry matter content) in low light conditions. However, intermediate values for leaf attributes were observed in L. parviflora which preferred moderate light conditions. Conclusions: Seasonal variations in light availability at the forest floor appear to play an important role in the establishment and growth of tree seedlings in seasonal dry forests. Leaf attributes can be used to explain intra-and inter-specific variation in response to light availability. Leaf attributes in combinations can be used to predict relative growth rate of tree species in tropical dry environment, which apart from soil moisture is also determined by light availability due to seasonal changes and canopy tree density.

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“…The characteristics of the pasture matrix used to evaluate its effects on functional connectivity for plants were distance among habitat patches and soil compaction due to cattle trampling. The potential of functional landscape connectivity for plants is known to be influenced by many abiotic variables not measured in this study, such as wind direction (Damschen et al, 2008), water deficit, soil fertility (Bhadouria et al, 2017;Vieira et al, 2019)…”

Section: Discussionmentioning

confidence: 99%

Propagation distance thresholds of woody Cerrado species in a pasture matrix

Issii

Pereira-Silva

Furquim

et al. 2022

Applied Vegetation Science

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Question: Is there a decrease in the richness, structural variables and composition similarity of woody Cerrado species with habitat-matrix distance, potentially influenced by soil compaction and propagule dispersal strategies in the pasture matrix? Location: We studied three landscapes of a pasture matrix in areas of the Cerrado biome in southwestern São Paulo, Brazil. Methods:We sampled 110 plots of 2 m × 2 m in the matrix, stratified in ranges perpendicular to the edge of the habitat, and 10 plots in the forest with no edge effect (60 m from the edge). We undertook soil sampling and collected information about the plants (taxonomy, height, circumference and establishment form by germination or resprouting). We defined habitat distance as the predictor variable for the following response variables: abundance, richness, establishment form, mean height, mean diameter at soil height and dispersal syndrome of the individuals sampled; in addition to the porosity and bulk density of the sampled soil. Results:We found significant differences between habitat and matrix for abundance, richness, mean height and germination number, but non-significant differences for resprouting number and mean diameter at soil height. There was no relationship regarding matrix-habitat distances for structural variables, and habitat species composition was similar only for the first 10 m distance from the habitat edge. Conclusion: Pasture did not prevent plant establishment but might act as an environmental filter. Pasture matrices modify the composition and diversity of the plant community compared with the Cerrado community. Pastures are dominated by resprouting, autochory and grassland species. Regenerating plants from the propagule bank of the matrix showed the potential for natural regeneration of Cerrado areas in pasture as a restoration strategy.

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Tree seedling establishment in dry tropics: an urgent need of interaction studies

Cited by 31 publications

References 159 publications

Effects of grass competition on tree seedlings growth under different light and nutrient availability conditions in tropical dry forests in India

Effects of grass competition on tree seedlings growth under different light and nutrient availability conditions in tropical dry forests in India

Effects of light availability on leaf attributes and seedling growth of four tree species in tropical dry forest

Propagation distance thresholds of woody Cerrado species in a pasture matrix

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