Rainfall drives leaf traits and leaf nutrient resorption in a tropical dry forest in Mexico

Oecologia ◽  
2010 ◽  
Vol 165 (1) ◽  
pp. 201-211 ◽  
Author(s):  
Lyliana Y. Rentería ◽  
Víctor J. Jaramillo
2015 ◽  
Vol 16 (3) ◽  
pp. 210-219 ◽  
Author(s):  
Jhonathan O. Silva ◽  
Mário M. Espírito-Santo ◽  
Helena C. Morais

2021 ◽  
Vol 7 (1) ◽  
pp. 266-275
Author(s):  
Fernando Henrique de Sena ◽  
Bruno Melo Lustosa ◽  
Silvia Roberta Santos Silva ◽  
Hiram Marinho Falcão ◽  
Jarcilene Silva de Almeida

2021 ◽  
Vol 4 ◽  
Author(s):  
Alline Mendes Alves ◽  
Mário Marcos do Espírito-Santo ◽  
Jhonathan O. Silva ◽  
Gabriela Faccion ◽  
Gerardo Arturo Sanchez-Azofeifa ◽  
...  

Leaf traits are good indicators of ecosystem functioning and can affect herbivory and leaf reflectance patterns, allowing a better understanding of changes in environmental conditions, such those observed during forest natural regeneration. The aim of this study was to evaluate the intraspecific variation in leaf traits and their influence on the pattern of herbivory and leaf reflectance in three species distributed along a successional gradient (early, intermediate and late stages) in a tropical dry forest (TDF) in northern Minas Gerais, Brazil. We sampled individuals of the following abundant tree species that occurred in multiple successional stages: Cenostigma pluviosum, Handroanthus ochraceus, and Tabebuia reticulata. We collected 10 leaves from each tree to determine the contents of chlorophyll a, b, and total, carotenoids and water, as well as the percentage of leaf area removed by herbivores and leaf specific mass (LSM). We also measured five spectral reflectance indices (Normalized Difference Vegetation Index-NDVI, Simple Ratio-SR, modified Normalized Difference-nND, modified SR-mSR and Water Index-WI) using a portable spectrometer. Our results showed intraspecific differences in most leaf traits along the successional gradient, suggesting that local adaptation may play an important role in plant community assembly. However, herbivory only differed for H. ochraceus in early and intermediate stages, but it was not affected by the leaf traits considered here. Spectral reflectance indices also differed among successional stage for all species together and for each species separately, except for T. reticulata in intermediate and late stages. Thus, leaf spectral signatures may be an important tool to the remote detection of different successional stages in TDFs, with implications for forest management.


2012 ◽  
Vol 6 (2) ◽  
pp. 158-170 ◽  
Author(s):  
R. K. Chaturvedi ◽  
A. S. Raghubanshi ◽  
J. S. Singh

2017 ◽  
Vol 44 (10) ◽  
pp. 1039 ◽  
Author(s):  
Keila R. Mendes ◽  
João A. A. Granja ◽  
Jean P. Ometto ◽  
Antônio C. D. Antonino ◽  
Rômulo S. C. Menezes ◽  
...  

An understanding of variations in morphophysiological leaf traits of plant models in dry tropical forests is essential for quantifying C fluxes from forest ecosystems in response to climate changes. The present study evaluated the influences of seasonal rainfall and different light conditions on the gas exchange, nutrients, organic compounds and morphological traits in Croton blanchetianus Baill. trees within a fragment of Caatinga forest. Stomatal conductance (gs) and net photosynthesis (PN) demonstrated variations within the diurnal cycle, with maximum values at approximately midday and minimum values at predawn. The PN and the diurnal integrated CO2 assimilation were lower during the dry season than in the rainy season. Water use efficiency was positively correlated with PN (r = 0.73) during the dry season only. However, the correlation between PN and gs was observed during the rainy season only (r = 0.60). Thus we demonstrated that C. blanchetianus has a remarkable ability to adapt to global climatic changes and could be considered a model in studies exploring water relationships in woody plants; consequently, this species may be important in future reforestation studies.


2020 ◽  
Vol 107 (6) ◽  
Author(s):  
Jhonathan O. Silva ◽  
Mário M. Espírito-Santo ◽  
Joselândio C. Santos ◽  
Priscyla M. S. Rodrigues

Mycotaxon ◽  
2018 ◽  
Vol 133 (3) ◽  
pp. 499-512 ◽  
Author(s):  
Magdalena Contreras-Pacheco ◽  
Ricardo Valenzuela ◽  
Tania Raymundo ◽  
Leticia Pacheco

2021 ◽  
Vol 490 ◽  
pp. 119127
Author(s):  
Tobias Fremout ◽  
Evert Thomas ◽  
Kelly Tatiana Bocanegra-González ◽  
Carolina Adriana Aguirre-Morales ◽  
Anjuly Tatiana Morillo-Paz ◽  
...  

2016 ◽  
Vol 77 (3) ◽  
pp. 542-552 ◽  
Author(s):  
J. Mertens ◽  
J. Germer ◽  
J. A. Siqueira Filho ◽  
J. Sauerborn

Abstract Spondias tuberosa Arr., a fructiferous tree endemic to the northeast Brazilian tropical dry forest called Caatinga, accounts for numerous benefits for its ecosystem as well as for the dwellers of the Caatinga. The tree serves as feed for pollinators and dispersers as well as fodder for domestic ruminants, and is a source of additional income for local smallholders and their families. Despite its vantages, it is facing several man-made and natural threats, and it is suspected that S. tuberosa could become extinct. Literature review suggests that S. tuberosa suffers a reduced regeneration leading to population decrease. At this juncture S. tuberosa cannot be considered threatened according to the International Union for Conservation of Nature Red List Categories and Criteria, as it has not yet been assessed and hampered generative regeneration is not considered in the IUCN assessment. The combination of threats, however, may have already caused an extinction debt for S. tuberosa. Due to the observed decline in tree density, a thorough assessment of the S. tuberosa population is recommended, as well as a threat assessment throughout the entire Caatinga.


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