Results 31 to 40 of about 521,602 (165)

Wide area digital dermoscopy applied to basal cell carcinoma

Anais Brasileiros de Dermatologia, 2020
In situations in when a dermoscopic record of a large lesion is desirable, the resulting images are usually restricted to a small field of view due to the limited diameter of dermatoscope lenses. This limitation often produces several photographs separately, thus losing the possibility of a single-image global evaluation. In these case reports, we show
Gerson Dellatorre, Guilherme Augusto Gadens   +1 more
openaire   +3 more sources

Forecast of the Norway spruce forests’ decline at the Ukrainian Carpathians according to forest types

Наукові праці Лісівничої академії наук України, 2019
The most negative result of the mass decline of the spruce forests in the Ukrainian Carpathians is the loss of most of the spruce wood stock, which is practically uncontested for many industries.
Yuriy Shparyk
doaj   +1 more source

On temperate areas, basal clades and biodiversity conservation [PDF]

Oryx, 1996
It has been accepted traditionally that biodiversity is concentrated in the tropics. However, threatened temperate areas in southern South America, South Africa, New Caledonia, Australia and the Holarctic possess a significant number of unique taxa. Phylogenetic information encoded in cladograms can be used to develop indices for measuring biodiversity.
Juan J. Morrone, Liliana Katinas, Jorge V. Crisci   +2 more
openaire   +1 more source

Comunidades lenhosas no cerrado sentido restrito em duas posições topográficas na Estação Ecológica do Jardim Botânico de Brasília, DF, Brasil

Rodriguésia
RESUMO A topografia afeta o regime hídrico e propriedades edáficas determinantes da vegetação do cerrado. Este estudo avaliou a distribuição espacial de árvores do cerrado sensu stricto em duas posições topográficas, interflúvio (I) e vale (V) na Estação
Manoel Cláudio da Silva Júnior, Thaise Rachel Sarmento   +1 more
doaj   +1 more source

Economically important species dominate aboveground carbon storage in forests of southwestern Amazonia

Ecology and Society, 2017
Tree species in tropical forests provide economically important goods and ecosystem services. In submontane forests of southwestern Amazonia, we investigated the degree to which tree species important for subsistence and trade contribute to aboveground ...
N. Galia Selaya, Pieter A. Zuidema, Christopher Baraloto, Vincent A. Vos, Roel J. W. Brienen, Nigel Pitman, Foster Brown, Amy E. Duchelle, Alejandro Araujo-Murakami, Luis A. Oliveira Carillo, Guido H. Vasquez Colomo, Severo Meo Chupinagua, Hugo Fuentes Nay, Stephen Perz   +13 more
doaj   +1 more source

CARACTERIZACIÓN ESTRUCTURAL DE BOSQUES TROPICALES A LO LARGO DE UN GRADIENTE ALTITUDINAL EN EL DEPARTAMENTO DE ANTIOQUIA, COLOMBIA CHARACTERIZATION OF TROPICAL FOREST STRUCTURE ALONG AN ALTITUDINAL GRADIENT IN ANTIOQUIA, COLOMBIA

Actualidades Biológicas, 2012
Con el objetivo de caracterizar e identificar los tipos de bosque del departamento de Antioquia (Colombia), con respecto a sus principales variables estructurales, se establecieron 16 parcelas permanentes de 1 ha (100 x 100 m) a lo largo de un gradiente ...
Wilson Giraldo-Pamplona, Adriana Corrales-Osorio, Adriana Yepes-Quintero, Álvaro J. Duque-Montoya   +3 more
doaj  

Using Tree Detection Algorithms to Predict Stand Sapwood Area, Basal Area and Stocking Density in Eucalyptus regnans Forest

Remote Sensing, 2015
Managers of forested water supply catchments require efficient and accurate methods to quantify changes in forest water use due to changes in forest structure and density after disturbance. Using Light Detection and Ranging (LiDAR) data with as few as 0.
Dominik Jaskierniak, George Kuczera, Richard Benyon, Luke Wallace   +3 more
doaj   +1 more source

ACUMULACIÓN DE CARBONO Y CAMBIOS ESTRUCTURALES EN BOSQUES SECUNDARIOS DEL ORIENTE ANTIOQUEÑO, COLOMBIA CARBON ACCUMULATION AND STRUCTURAL CHANGES IN SECONDARY FORESTS IN EASTERN ANTIOQUIA, COLOMBIA

Actualidades Biológicas, 2011
En el Oriente antioqueño (Antioquia), Colombia, en tierras utilizadas previamente en ganadería extensiva, se estudió la sucesión secundaria analizando la densidad arbórea, área basal y biomasa aérea.
Miguel A. Peña, Juan Saldarriaga, Álvaro J. Duque-Montoya   +2 more
doaj  

Community structure and floristic composition of Quercus fusiformis and Carya illinoinensis forests of the Northeastern Coastal Plain, Coahuila, Mexico

Revista Mexicana de Biodiversidad, 2011
In order to describe community structure and richness in oak and walnut forests occurring along the San Rodrigo, San Diego, Escondido and Arroyo de las Vacas rivers on the Northeastern Coastal Plain (NE Coahuila, Mexico), we established 30 1 000-m2 ...
Juan Antonio Encina-Domínguez, Efrén Mata Rocha, Jorge A. Meave, Alejandro Zárate-Lupercio   +3 more
doaj   +1 more source

Comparison of Single and Ensemble Regression Model Workflows for Estimating Basal Area by Tree Size Class in Pine Forests of Southeastern U.S

Remote Sensing
Quantifying basal area in terms of diameter classes is important for informing forest management decisions. It is commonly derived from stand diameter distributions using field measurements, LiDAR, and a distribution function.
Joseph St. Peter, Jason Drake, Paul Medley, Eben Broadbent, Gang Chen, Victor Ibeanusi   +5 more
doaj   +1 more source