Results 11 to 20 of about 75,567 (294)

A Single-Tree Processing Framework Using Terrestrial Laser Scanning Data for Detecting Forest Regeneration

open access: yesRemote Sensing, 2018
Direct assessment of forest regeneration from remote sensing data is a previously little-explored problem. This is due to several factors which complicate object detection of small trees in the understory.
Johannes Heinzel, Christian Ginzler
doaj   +1 more source

Bacterial multi-resistance to antibiotics in water from plant cavities (phytotelms) in a deep tropical forest from Costa Rica

open access: yesCuadernos de investigación UNED, 2023
Introduction: The spread of antimicrobial resistance in natural environments continues to be reported throughout the world; nevertheless, there is no study about phytotelms (water in the natural cavities of plants) in the deep understory of tropical ...
Stephanny Sánchez-Vargas   +3 more
doaj   +1 more source

Effects of Different Methods on the Comparison between Land Surface and Ground Phenology—A Methodological Case Study from South-Western Germany

open access: yesRemote Sensing, 2016
Several methods exist for extracting plant phenological information from time series of satellite data. However, there have been only a few successful attempts to temporarily match satellite observations (Land Surface Phenology or LSP) with ground based ...
Gourav Misra   +2 more
doaj   +1 more source

Weeds under the canopies of tree species submitted to different planting densities and intercropping Plantas daninhas sob copas de espécies arbóreas submetidas a consórcios e densidades de plantio diferentes

open access: yesPlanta Daninha, 2013
Assessing the growth and floristic composition of species that grow under the canopy of trees is important for weed control (WC). The objective of this study was to assess two experiments (E1 and E2), when the trees were two years and one year of age ...
A.D Souza   +4 more
doaj   +1 more source

Net Ecosystem Exchange of CO2 in Deciduous Pine Forest of Lower Western Himalaya, India

open access: yesResources, 2019
Carbon cycle studies over the climate-sensitive Himalayan regions are relatively understudied and to address this gap, systematic measurements on carbon balance components were performed over a deciduous pine forest with an understory layer.
Nilendu Singh   +3 more
doaj   +1 more source

Global warming will affect the maximum potential abundance of boreal plant species [PDF]

open access: yes, 2020
Forecasting the impact of future global warming on biodiversity requires understanding how temperature limits the distribution of species. Here we rely on Liebig's Law of Minimum to estimate the effect of temperature on the maximum potential abundance ...
Hiirisalmi H.   +11 more
core   +1 more source

Changes in the structure and productivity of a herb-Sphagnum pine stand upon drainage and a combination of treatments

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2018
Data from long-term (30 yrs) monitoring of changes in the ecological conditions and species composition of all vegetation layers (tree stand, young growth, undergrowth, dwarf shrub-herb layer, moss layer) of a drained herb-sphagnum pine stand after a ...
Vasily Matyushkin, Sergey Moshnikov
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

Plant community dynamics in an urban forest fragment of the São Paulo Metropolitan Area, Brazil

open access: yesHoehnea, 2020
We present a synthesis (2006-2012) of plant community dynamics in an area (1 ha) of the largest remnant of Atlantic Rain Forest surrounded by São Paulo city.
Hebert Kondrat   +2 more
doaj   +1 more source

Contribution of leaf specular reflection to canopy reflectance under black soil case using stochastic radiative transfer model [PDF]

open access: yes, 2018
Numerous canopy radiative transfer models have been proposed based on the assumption of “ideal bi-Lambertian leaves” with the aim of simplifying the interactions between photons and vegetation canopies.
Knyazikhin, Yuri   +3 more
core   +1 more source

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