A5031926603- Plant and animal studies
- Plant Water Relations and Carbon Dynamics
- Plant responses to water stress
- Ecology and Vegetation Dynamics Studies
- Forest ecology and management
- Bioactive Natural Diterpenoids Research
- Plant Parasitism and Resistance
- Botanical Research and Applications
- Fern and Epiphyte Biology
- Plant-based Medicinal Research
- Plant Diversity and Evolution
- Coastal wetland ecosystem dynamics
- Tree Root and Stability Studies
- Traditional Chinese Medicine Analysis
- Plant Stress Responses and Tolerance
- Groundwater flow and contamination studies
- Invertebrate Taxonomy and Ecology
- Plant Pathogens and Fungal Diseases
- Wood Treatment and Properties
- Soil Carbon and Nitrogen Dynamics
- Plant Taxonomy and Phylogenetics
- Plant and soil sciences
- Water Resource Management and Quality
- Forest Insect Ecology and Management
- Botany and Plant Ecology Studies
Instituto de Ecología
2015-2025
Universidad Nacional del Sur
2003-2024
Instituto Florestal
2021
Universidade Estadual Paulista (Unesp)
2021
Universidad Nacional Autónoma de México
1998-2015
Universidad Veracruzana
2015
Center for Scientific Research and Higher Education at Ensenada
2015
Rede de Química e Tecnologia
2013
Colegio de Postgraduados
2013
Centre de Recherches sur les Macromolécules Végétales
2006
supplementary material of this IAWA list microscopic bark features, titled "recipes and protocols for histochemical tests", by solange c.
Background: Lianas present many interesting structural features that are linked to their climbing habit. Having lost substantial amounts of supporting tissue, these plants depend on external structures for support. Meanwhile, during evolutionary history, they have gained additional conductive and storage tissues. The wood lianas generally includes wider vessels, larger axial parenchyma, rays, longer fibres than those trees. Cambial variants represent another key anatomical feature lianas....
In seasonal plant communities where water availability changes dramatically both between and within seasons, understanding the mechanisms that enable plants to exploit pulses survive drought periods is crucial. By measuring rates of physiological processes, we examined trade-off exploitation tolerance among seedlings trees a tropical dry forest, identified biophysical traits most closely associated with water-use strategies. We also explored whether early late secondary successional species...
• Background and Aims Morphological descriptions of the extrafloral nectaries (EFNs) certain plant species are common in literature, but they rarely relate morphology with histology, gland distribution secretory attributes. In this study a morphological/secretory characterization EFNs occurring on several tropical coastal community is made implications attributes discussed from functional perspective.
ABSTRACT Xylem sap salinity and conductivity were examined in two mangrove ecosystem tree species . For Avicennia germinans , extracted xylem osmotic potentials ranged from −0.24 to −1.36 MPa versus −0.14 −0.56 for Conocarpus erectus. of did not vary potential between sites nor predawn midday. In values more negative at midday than predawn, also hypersaline hyposaline sites. After removing embolisms, specific ( K s ) was measured as a function the artificial perfusion. both lowest values,...
Summary Along their lengths, stems experience different functional demands. Because bark and wood traits are usually studied at single points on stems, it remains unclear how carbon allocation changes along tip‐to‐base trajectories across species. We examined vs by measuring cross‐sectional areas of outer inner (OB IB), IB regions (secondary phloem, cortex, phelloderm), from stem tips to bases 35 woody angiosperm species diverse phylogenetic lineages, climates, fire regimes, morphologies....
The presence of shade-tolerant tree invaders has been recently noted in tropical and temperate forest understories. Maximum growth rate is an important trait for exotic trees becoming a forest. This study aimed to determine the Eriobotrya japonica secondary cloud central Veracruz, Mexico. objectives this were wood density, ring boundaries number, their relationship diameter at breast height (DBH) climate data. Tree counts obtained using Python-based software with subsequent visual...
Background and AimsRhizophora species of mangroves have a conspicuous system stilt-like roots (rhizophores) that grow from the main stem resemble flying buttresses. As such, development rhizophores can be predicted to important for effective transmission dynamic loads top tree ground, especially where substrate is unstable, as often case in habitats Rhizophora typically grow. This study tests hypothesis rhizophore architecture R. mangle co-varies with their proximity stem, size crown...
Para entender los procesos de ecosistemas desde un punto vista funcional es fundamental las relaciones entre la variabilidad climática, ciclos biogeoquímicos y interacciones superficie-atmósfera. En últimas décadas se ha aplicado manera creciente el método covarianza flujos turbulentos (EC, por sus siglas en inglés) terrestres, marinos urbanos para medir gases invernadero (p.ej., CO 2 , H O ) energía calor sensible latente).En diversas regiones han establecido redes sistemas EC que aportado...
Ethrel (2-chloroethylphosphonic acid) applied in lanolin paste at concentrations of 0.4, 1.6, 6.2, or 10.8% to stems 3-month-old Ulmus americana seedlings greatly altered stem anatomy within 41 days. Application ethrel 1.6% higher concentration was followed by increased bark thickness primarily as a result an increase the amount phloem and intercellular spaces. Xylem increment following treatment with 0.4 reduced 6.2 ethrel. All number vessels, vessel diameters, induced ray width size...
• Premise of the study: Xylem sap osmolality and salinity is a critical unresolved issue in plant function with impacts on transport efficiency, pressure gradients, living cell turgor pressure, especially for halophytes such as mangrove trees.• Methods: We collected successive xylem vessel samples from stems shoots Avicennia germinans Laguncularia racemosa using vacuum extraction measured their osmolality. Following series extractions chamber, we depressurized shoot pressurized again after...
Within a landscape, multiple habitats exist for soil microbial communities. But how these shape community composition requires an understanding of the way in which diversity is impacted across broad range spatial scales. Mountain ecosystems are excellent systems to study communities, because multitude climate and variables change within relatively small distance. We investigated structure bulk rhizosphere soils beneath three plant species, Vaccinium myrtillus , Juniperus communis Picea abies...
We measured xylem pressure potentials, soil osmotic hydraulic conductivity and percent loss of (PLC) due to embolism, made microscopic observations perfused dye in the white mangrove tree, Laguncularia racemosa (L.) Gaertn. f., (1) determine its vulnerability air embolism compared with published results for highly salt-tolerant red Rhizophora mangle L., (2) identify possible relationships between permanent blockage vessels stem diameter. was more vulnerable than reported R. mangle, 50 PLC at...
Flooding of soil for 31 days reduced growth, induced marginal leaf necrosis and abscission, caused decay root systems, morphological anatomical changes in 10-week-old Ulmusamericana L. seedlings. The seedlings adapted to flooding by forming hypertrophied lenticels adventitious roots on submerged portions stems, as well new preexisting roots. Hypertrophy the resulted from accelerated phellogen activity elongation cork cells. increased extended beyond often ruptures epidermis encircling entire...
PREMISE OF THE STUDY: During the interactions between a parasitic plant and its host, parasite affects host morphologically, anatomically, physiologically, yet there has been little focus on effect of hosts parasite. Here, functional hemiparasitic mistletoe Psittacanthus schiedeanus Liquidambar styraciflua Quercus germana were interpreted based anatomical features vascular tissues. METHODS: Using standard techniques for light transmission electron microscopy, we studied effects P. phloem...
During the COVID-19 pandemic lockdown, all laboratory work was suspended, and we were obliged to from home, causing delays in our research. As disruption supply chains made it difficult obtain regular lab supplies, search for substitutes. We became familiar with a plastic material known as biaxially oriented polypropylene (BOPP) that is widely used food industry wrapping or storing fruits, vegetables, meat. BOPP easily dissolved organic solvents such xylenes, acetone, thinner, but these...
In ferns, leaf traces in the petioles are sometimes surrounded by a circumendodermal band (CB), cell layer of varying structure and arrangement. We studied CB 89 fern species from 53 genera 28 families, its correlation with trace configuration, dissection life form, to explore anatomical diversity, possible origin suitability for systematics. The cells always contain tannins their lumina walls, but lack lignin suberin. Cell wall thickness varies among may prove be useful occurrence...
The hydraulic architecture of the secondary hemiepiphyte Monstera acuminata was examined in native plants from Los Tuxtlas, Veracruz, Mexico, to determine how it compared better‐known growth forms such as trees, shrubs, lianas and primary hemiepiphytes. starts its life cycle a prostrate herb. As ascends tree or other vertical support, stem becomes thicker, produces larger leaves, may die back base upwards until only aerial feeding roots serve connect soil. Unlike pattern vessel‐size...
Premise of research. Structure-function relationships xylem in tropical fern species remain poorly explored despite the taxonomic diversity and ecological importance ferns environments. The aim this study is to broaden our understanding how morphology anatomy are influenced by light availability.Methodology. Nine species, including six shade-tolerant two sun-exposed one with representatives both conditions, were studied order investigate impact exposure on leaf anatomy. Measured parameters...