Abstract A pilot experiment designed to test the effect of cattle, small mammals, and elevation on success reforestation an endemic dwarf pine species in northeastern Mexico was implemented. Pinus culminicola (Andresen et Beaman) grows only four high peaks Sierra Madre Oriental is under pressure from grazing, wildfires, human activities such as mining, road development for timber extraction, telecommunication aerial navigation devices. We planted monitored 2‐year‐old seedlings at three...

Knowledge on diverse structural traits in multicohort forests is of paramount importance for developing management plans natural resources. The aim this study was to define a protocol understand the dynamics trees mixed pine-oak ecosystem. proposed methodology combination global forest ecosystem measurement and four group sample technique. All information gathered used determine abundance dominance tree species. Frequency, diameter height differentiation index species mingling were...

This paper presents the results obtained in a research project aiming establishment of an appropriated method for determining stem shaoe Pinus hartwegii Lindl. trees. Three taper equation models have been tested: polinomial regression second degree, fifth degree and combined variable model. Second are best ones shape fitting.

Artificial Intelligence (AI) is bursting into various fields, including higher education. Its potential to transform teaching, learning and research increasingly evident. In this context, the need arises understand how AI impacts academic productivity of teachers. This systematic review, guided by PRISMA methodology, seeks identify analyze five studies that explore relationship between It hoped findings will contribute a better understanding impact on undergraduate teachers in Faculty...

This study was conducted to develop a forest growth model with information collected from conventional inventories in southeastern Sinaloa, Mexico. The developed data 80 sample plots, which were sampled systematic pattern and classified 10 age classes. based on fitting diameter distribution function diametric classes of unevenaged stands. characterized by the three-parameter Weibull probability density function. location, shape, scale parameters distribution, as well number trees per ha...

Using a sampling plot simulator of fized and variable dimensions for forest inventories, it was carried out an evaluation different sizes diverse basal area factors. Study Pinus cooperi Blanco stand in the region El Salto, Durango, México. Plot 0.01 to 0.1 ha, intervals as well factor 1 10 were simulated. The optimal size 0.05 ha. On most accurate no conclusive results obtained, given fact that factors 2 not evaluated.

The mediterranean Pinus species have been considered for reforesting marginal fields in some tropical and subtropical countries. This paper focuses on testing five provenances of the P. halepensis Mill. brutia Ten. as well one provenance eldarica Medw. native pseudostrobus Lindl. Plant survival, total height basal diameter were measured annually eight years. In 1986, plantes an experimental site Sierra Madre Oriental a randomized block design. results showed that plant survival was higher...

The chemical and physical properties of the substrate produce positive or negative effects on germination seeds, different pre-germination treatments are applied to obtain better results. However, use soil as a where species grows is usually not evaluated used treatment. objective present study was evaluate effect native [two types woody grow (clay sand)] Acacia farnesiana, Larrea tridentata Prosopis laevigata. In addition, two groups were compared in seeds (grouped grouped) protected area

In this work a methodology for the construction of yield tables based on data temporary sample plots, stem analysis, and measurements individual trees is presented. The method was developed in Mexico using as example species Pinus pseudostrobus Lindl. procedure employed calculation total according to Magin's Method. relationships between most important stand parameters were determined regression equations.