Results 91 to 100 of about 5,471 (263)
A spectral–structural characterization of European temperate, hemiboreal, and boreal forests [PDF]
Earth System Science DataRadiative transfer models of vegetation play a crucial role in the development of remote sensing methods by providing a theoretical framework to explain how electromagnetic radiation interacts with vegetation in different spectral regions.
M. Rautiainen +7 more
doaj +1 more source
Development of a Rapid and Precise Method of Digital Image Analysis to Quantify Canopy Density and Structural Complexity [PDF]
Estimation of canopy density is necessary for ecological research and woodland management. However, traditional manual methods are time consuming and subject to interobserver variability, while existing photographic methods usually require expensive fish-
Goodenough, Andrew S. +1 more
core +1 more source
The Anatomical Record, EarlyView.Abstract Despite documented ecomorphological shifts toward an herbivorous diet in several coelurosaurian lineages, the evolutionary tempo and mode of these changes remain poorly understood, hampered by sparse cranial materials for early representatives of major clades. This is particularly true for Therizinosauria, with representative crania best known
William J. Freimuth, Lindsay E. Zanno
wiley +1 more source
European Journal of Remote SensingForest monitoring benefits from biophysical parameters such as Leaf Area Index (LAI), Plant Area Index (PAI) and fractional vegetation cover (FCOVER) and can be obtained from optical and LiDAR remote sensing, such as Sentinel-2 (S2) and the Global ...
Birgitta Putzenlechner +7 more
doaj +1 more source
Estimating Snow Depth and Leaf Area Index Based on UAV Digital Photogrammetry
Sensors, 2019 This study presents a novel approach in the application of Unmanned Aerial Vehicle (UAV) imaging for the conjoint assessment of the snow depth and winter leaf area index (LAI), a structural property of vegetation, affecting the snow accumulation and ...
Theodora Lendzioch +2 more
doaj +1 more source
LAI determination in dune vegetation: a comparison of different techniques [PDF]
, 2005 Research was conducted in the nature reserve De Westhoek (De Panne, Belgium) in order to determine leaf-area-index (LAI) in different dune vegetation types by both direct (destructively) and indirect optical measurements.
De Wulf, R. +6 more
core
Variability and bias in active and passive ground-based measurements of effective plant, wood and leaf area index [PDF]
, 2018 In situ leaf area index (LAI) measurements are essential to validate widely-used large-area or global LAI products derived, indirectly, from satellite observations.
Armston, John +6 more
core +2 more sources
The Anatomical Record, EarlyView.Abstract Teleocichla comprises small cichlids that inhabit the rapid streams of Amazonian rivers; however, there has been limited research on their encephalon morphology. This study examined the neuroanatomy of four species, focusing on volumetric measurements of their encephalon subregions, and providing a histological description of the encephalon of
Renan Leão‐Reis +4 more
wiley +1 more source
Evaluation and correction of optically derived leaf area index in different temperate forests
iForest - Biogeosciences and Forestry, 2016 In recent years optical techniques for rapid LAI measurements have been developed, but few studies have been performed to evaluate the accuracy of optical estimation of LAI in mixed deciduous-evergreen forest stands.
Liu Z, Jin G, Zhou M
doaj +1 more source
Archaeology in Oceania, EarlyView.ABSTRACT This paper reports on the excavation of a cache of stone artefacts, buried on the bank of a waterhole or ‘billabong’ in central western Queensland. This is an extremely rare find, and yet it is the second such site to be reported within less than a 10 km radius.
Yinika L. Perston +5 more
wiley +1 more source