Results 11 to 20 of about 237,723 (204)

A spatially explicit empirical model of structural development processes in natural forests based on climate and topography. [PDF]

open access: yesConserv Biol, 2020
Abstract Stand structure develops with stand age. Old‐growth forests with well‐developed stand structure support many species. However, development rates of stand structure likely vary with climate and topography. We modeled structural development of 4 key stand variables and a composite old‐growth index as functions of climatic and topographic ...
Yamaura Y   +6 more
europepmc   +2 more sources

Modelo Digital do Terreno obtido por RPA para cálculo de volume de terra em morros

open access: yesThe Journal of Engineering and Exact Sciences, 2021
O uso de RPAs (Remotely Piloted Aircraft) popularmente conhecidas como Drones, tem se destacado como uma das técnicas com amplo potencial de contribuição em diversos campos científicos. A possibilidade de geração de produtos cartográficos e Modelos Digitais do Terreno de maneira rápida em comparação com as técnicas de topografia tradicionais como ...
Leonardo Carlos Barbosa   +4 more
openaire   +2 more sources

Berries and bullets: influence of food and mortality risk on grizzly bears in British Columbia Bayas y balas: influencia de la alimentación y el riesgo de mortalidad en los osos grizzly en la Columbia Británica Des baies et des balles: influence de l'alimentation et risques de mortalité chez les ours grizzlys de la Colombie‐Britannique

open access: yesWildlife Monographs, Volume 213, Issue 1, November 2023., 2023
We developed a spatialized surface for the primary food of grizzly bears in southeast British Columbia. After using this huckleberry patch layer to model habitat selection, fitness, and density, in a bottom‐up top‐down paradigm, we found that huckleberry patches near forestry roads contribute very little to fitness and density.
Michael F. Proctor   +9 more
wiley   +1 more source

Evaluación del modelo digital de terreno obtenido mediante técnicas de fotogrametría con VANT y con técnicas GNSS aplicados a proyectos viales en zonas de mediana vegetación

open access: yesAvances, 2020
El objetivo de la investigación de tipo cuantitativo fue obtener un modelo digital de superficie en caminos de montaña mediante un vehículo aéreo no tripulado (VANT). Se planificó que en la zona de estudio existiera vegetación mediana.
Yandri Jose Lalangui Jaramillo   +1 more
doaj   +1 more source

Integration of qualitative and quantitative methods for land‐use‐change modeling in a deforestation frontier

open access: yesConservation Biology, Volume 36, Issue 6, December 2022., 2022
Abstract Development and implementation of effective protected area management to reduce deforestation depend in part on identifying factors contributing to forest loss and areas at risk of conversion, but standard land‐use‐change modeling may not fully capture contextual factors that are not easily quantified.
Katherine Siegel   +5 more
wiley   +1 more source

Using deep convolutional neural networks to forecast spatial patterns of Amazonian deforestation

open access: yesMethods in Ecology and Evolution, Volume 13, Issue 11, Page 2622-2634, November 2022., 2022
Abstract Tropical forests are subject to diverse deforestation pressures while their conservation is essential to achieve global climate goals. Predicting the location of deforestation is challenging due to the complexity of the natural and human systems involved but accurate and timely forecasts could enable effective planning and on‐the‐ground ...
James G. C. Ball   +3 more
wiley   +1 more source

Estimating canopy fuel load with hemispherical photographs: A rapid method for opportunistic fuel documentation with smartphones

open access: yesMethods in Ecology and Evolution, Volume 12, Issue 11, Page 2101-2108, November 2021., 2021
Abstract Canopy fuel load (CFL) affects wildfire intensity and is a critical input for fire behaviour models; however, measuring CFL in the field is time‐consuming and costly. Until recently, hemispherical photographs have been unable to adequately describe canopy metrics in non‐diffuse light conditions.
Hilary A. Cameron   +2 more
wiley   +1 more source

MORFOMETRIA DE BACIAS HIDROGRÁFICAS DE PRIMEIRA ORDEM EM ÁREAS AGRÍCOLAS SOB SISTEMA PLANTIO DIRETO: DELIMITAÇÃO E PROPENSÃO À EROSÃO E INUNDAÇÃO

open access: yesRevista Brasileira de Geomorfologia, 2020
O Sistema Plantio Direto (SPD) aplica técnicas agrícolas conservacionistas para preservação do solo, controlando processos de erosão. Para isso, é necessário conhecer as características do relevo que afetam a dinâmica e o poder erosivo da água na ...
Hullysses Sabino   +3 more
doaj   +1 more source

Modelo digital y fotogrametría a través del uso de vehículos aéreos no tripulados (UAV). Caso de estudio, entorno del río Tahuando en la ciudad de Ibarra, provincia de Imbabura

open access: yesRevista Eídos, 2023
En la actualidad, el avance tecnológico ha aumentado a una velocidad vertiginosa, de manera que han sido diversos los campos beneficiados, entre ellos la ingeniería y la arquitectura, por consiguiente, el desarrollo de técnicas y herramientas que ...
Francisco Javier Almeida Navarrete   +2 more
doaj   +1 more source

USO DE VANT COMO FERRAMENTA PARA ESTIMATIVA DE ALTURA DE DOSSEL EM MANGUEZAL: UM ESTUDO INVESTIGATIVO EM GUARATIBA, RIO DE JANEIRO, BRASIL

open access: yesRevista Tamoios, 2020
Estimativas para altura de árvores são valores difíceis de se obter se não houver acesso a dados LIDAR. Contudo, VANTs (Veículos Aéreos Não-Tripulados) ou drones podem gerar MDS (Modelos Digitais de Superfície) muito precisos.
Caio de Lima Boa Morte   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy