Results 271 to 280 of about 210,901 (351)

Using phenology to improve invasive plant detection in fine‐scale hyperspectral drone‐based images

Remote Sensing in Ecology and Conservation, EarlyView.
Using drone‐based hyperspectral images of mixed temperate successional forests collected over a growing season, detection algorithms were produced for three invasive species of interest, which are not only invasive in Virginia but also much of the U.S.: Ailanthus altissima (tree of heaven), Elaeagnus umbellata (autumn olive), and Rhamnus davurica ...
Kelsey S. Huelsman, Howard E. Epstein, Xi Yang, Roderick Walker   +3 more
wiley   +1 more source

Specialized Feeding Behavior of an Endangered Primate Enhances Forest Health in China. [PDF]

Ecol Evol
Li N, Wang HH, Li YP, Grueter CC, Xu HM, Huang ZP, Xiao W.   +6 more
europepmc   +1 more source

Large‐scale characterization of horizontal forest structure from remote sensing optical images

Remote Sensing in Ecology and Conservation, EarlyView.
Sub‐meter resolution remote sensing data and tree crown segmentation techniques hold promise in offering detailed information that can support the characterization of forest structure from a horizontal perspective, offering new insights in the tree crown structure at scale.
Xin Xu, Martin Brandt, Xiaowei Tong, Maurice Mugabowindekwe, Yuemin Yue, Sizhuo Li, Qiue Xu, Siyu Liu, Florian Reiner, Kelin Wang, Zhengchao Chen, Yongqing Bai, Rasmus Fensholt   +12 more
wiley   +1 more source

Effects of ambient wind on droplet deposition uniformity in orchard air-assisted sprayers. [PDF]

Sci Rep
Xu T, Li X, Ding L, Qi Y, Lu H, Xiao W, Lv X, Li J.   +7 more
europepmc   +1 more source

Urban Forests and Environmental Challenges in the Last Decades in Brazil: Insights for the National Urban Forestry Plan

Sustainable Development, EarlyView.
ABSTRACT National afforestation policies are crucial for outlining guidelines and goals to be implemented at the local level. Therefore, it is crucial to conduct research that systematizes indicators from across the country into a single proposal. This study examines the spatiotemporal distribution of urban forest research in Brazil from 1980 to 2020 ...
Mauricio Lamano Ferreira, Natália Cristina de Oliveira, Ana Alice Guimarães Farias Cintra, Marta dos Santos Moreira, Ricardo Keiichi Nakazato, Débora Souza Alvim   +5 more
wiley   +1 more source

Calculation method of canopy effective volume for fruit tree based on LiDAR point cloud data. [PDF]

Front Plant Sci
Ma H, Wang K, Ma J, Jiang S, Liu P, Yang C, Wang D, Cui H, Chang H.   +8 more
europepmc   +1 more source

Object-based image analysis for the delineation of canopy gaps and individual tree crowns using multi-source data: A case study in Haliburton Forest, Ontario

, 2014
Assunta Saliola
openalex   +1 more source

Monitoring GPS‐collared moose by ground versus drone approaches: efficiency and disturbance effects

Wildlife Biology, EarlyView.
Efficient wildlife management requires precise monitoring methods, for example to estimate population density, reproductive success, and survival. Here, we compared the efficiency of drone (equipped with a RGB camera) and ground approaches to detect and observe GPS‐collared female moose Alces alces and their calves. We also quantified how drone (n = 42)
Martin Mayer, Erlend Furuhovde, Kristoffer Nordli, Giorgia Myriam Ausilio, Petter Wabakken, Ane Eriksen, Alina L. Evans, Karen Marie Mathisen, Barbara Zimmermann   +8 more
wiley   +1 more source

Impact of Canopy Openness on Forest Regeneration and Forest Soil Nutrients. [PDF]

Ecol Evol
Ojha P, Kandel R.
europepmc   +1 more source

Monitoring active osprey nests with drones is more time efficient and less disturbing than conventional methods

Wildlife Biology, EarlyView.
Drones are used to monitor bird nesting sites at less accessible locations, such as on cliffs, human infrastructure, or within the tree canopy. While there are a growing number of studies documenting avian behavioral responses to various drones, there is a continued need to monitor taxa‐specific responses to different drone models. We explored both the
Natasha K. Murphy, Jared A. Elmore, Melanie R. Boudreau, Brian S. Dorr, Scott A. Rush   +4 more
wiley   +1 more source