Results 31 to 40 of about 197,047 (348)

Steppes, savannahs, forests and phytodiversity reservoirs during the Pleistocene in the Iberian Peninsula [PDF]

open access: yes, 2010
A palaeobotanical analysis of the Pleistocene floras and vegetation in the Iberian Peninsula shows the existence of patched landscapes with Pinus woodlands, deciduous and mixed forests, parklands (savannah-like), shrublands, steppes and grasslands ...
Agustí   +259 more
core   +3 more sources

Investigation of Surface Temperature Differentiation of Fagus and Quercus Stands by Using Landsat Images

open access: yesCumhuriyet Science Journal, 2019
Whileclimatic features of regions affect the variety of tree species and theirstructures, the vegetation structures of the regions are effective on microclimate. In this study, thermal differentiations in the Fagus and Quercus stands which are homogenous
Çağdaş Kuşçu Şimşek, Osman Doğan
doaj   +1 more source

Ecology of the Cerambycidae (Coleoptera) of the Huron Mountains in Northern Michigan [PDF]

open access: yes, 2017
Eighty-nine species of Cerambycidae were collected during a five-year survey of the woodboring beetle fauna of the Huron Mountains in Marquette County, Michigan. Host plants were determined for 51 species.
Gosling, D. C. L
core   +2 more sources

Estimating Olive Tree Density in Delimited Areas Using Sentinel-2 Images

open access: yesRemote Sensing
The objective of this study is to develop a method for estimating the density of olive trees in delimited plots using low-resolution images from the Sentinel-2 satellite.
Adolfo Lozano-Tello   +3 more
doaj   +1 more source

Stand-level drivers of tree-species diversification in Mediterranean pine forests after abandonment of traditional practices [PDF]

open access: yes, 2015
The progressive abandonment of traditional forest management over the last few decades has led to significant densification processes in most Mediterranean pine stands.
Coll Mir, Lluís   +2 more
core   +1 more source

Manejo agroforestal con producción de carbón vegetal en la sierra de Zongolica, Veracruz

open access: yesAIA Avances en Investigación Agropecuaria, 2021
En la sierra de Zongolica, habitada por pobladores nahuas, el manejo agroforestal es parte de su vida social, cultural y económica (López Binnqüist et al., 2020).
Miguel Ángel Vega-Ortega   +2 more
doaj   +1 more source

Foliar epidermis morphology in Quercus (subgenus Quercus, section Quercus) in Iran

open access: yesActa Botanica Croatica, 2012
Foliar epidermis morphology inQuercus(subgenusQuercus, sectionQuercus) in IranThe foliar morphology of trichomes, epicuticular waxes and stomata inQuercus cedrorum, Q. infectoriasubsp.boissieri, Q. komarovii, Q. longipes, Q. macranthera, Q. petraeasubsp.ibericaandQ. robursubsp.pedunculiflorawere studied by scanning electron microscopy.
Panahi, Parisa   +4 more
openaire   +2 more sources

Tilings with T and Skew Tetrominoes [PDF]

open access: yes, 2012
We consider tiling problems in the integer lattice. Specifically, we look at a set of four T-tetrominoes and four skew tetrominoes and determine when this set can tile rectangles and modified rectangles.
Lester, Cynthia
core   +1 more source

Tree regeneration responds more to shade casting by the overstorey and competition in the understorey than to abundance per se [PDF]

open access: yes, 2019
Manipulating the overstorey is the key tool for forest managers to steer natural regeneration. Opening up the canopy does not only create favourable light conditions for tree seedling growth, but also for (competitive) understorey species.
Baeten, Lander   +3 more
core   +1 more source

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