Results 11 to 20 of about 314,663 (298)

A new species of Nidirana (Anura, Ranidae) from northern Guangxi, China [PDF]

open access: yesZooKeys, 2022
A new species of music frog, Nidirana guibeiensis sp. nov., is described from northern Guangxi, China. Based on two mtDNA fragments analyzed, phylogenetic trees reveal that N. guibeiensis sp. nov. is most closely related to N. leishanensis.
Wei-Cai Chen   +6 more
doaj   +3 more sources

Abundance, frequency and distribution pattern of tree species in recorded forest area of Western Himalaya

open access: yesNotulae Scientia Biologicae, 2020
The forest in India have a long history of human induced modifications through intensive forest management that began in the colonial period but continued afterwards to meet the wood-based demand until the forestry goals shifted towards conservation ...
Arun K. THAKUR   +2 more
doaj   +1 more source

Small Area Estimates for National Applications: A Database to Dashboard Strategy Using FIESTA

open access: yesFrontiers in Forests and Global Change, 2022
This paper demonstrates a process for translating a database of forest measurements to interactive dashboards through which users can access statistically defensible estimates and analyses anywhere in the conterminous US.
Tracey S. Frescino   +4 more
doaj   +1 more source

Towards Tree Green Crown Volume: A Methodological Approach Using Terrestrial Laser Scanning

open access: yesRemote Sensing, 2020
Crown volume is a tree attribute relevant in a number of contexts, including photosynthesis and matter production, storm resistance, shadowing of lower layers, habitat for various taxa.
Zihui Zhu, Christoph Kleinn, Nils Nölke
doaj   +1 more source

Estimation of Forest Growing Stock Volume with UAV Laser Scanning Data: Can It Be Done without Field Data?

open access: yesRemote Sensing, 2020
Laser scanning data from unmanned aerial vehicles (UAV-LS) offer new opportunities to estimate forest growing stock volume ( V ) exclusively based on the UAV-LS data.
Stefano Puliti   +2 more
doaj   +1 more source

National Forest Inventory Contributions to Forest Biodiversity Monitoring [PDF]

open access: yesForest Science, 2012
Forests are the most biodiverse terrestrial ecosystems. National forest inventories (NFIs) are the main source of information on the status and trends of forests, but they have traditionally been designed to assess land coverage and the production value of forests rather than forest biodiversity.
CHIRICI, Gherardo   +9 more
openaire   +3 more sources

Increasing turnover through time in tropical forests [PDF]

open access: yes, 1994
Tree turnover rates were assessed at 40 tropical forest sites. Averaged across inventoried forests, turnover, as measured by tree mortality and recruitment, has increased since the 1950's, with an apparent pantropical acceleration since 1980.
Gentry, A.H., Phillips, O.L.
core   +1 more source

Longitudinal height-diameter curves for Norway spruce, Scots pine and silver birch in Norway based on shape constraint additive regression models

open access: yesForest Ecosystems, 2018
Background Generalized height-diameter curves based on a re-parameterized version of the Korf function for Norway spruce (Picea abies (L.) Karst.), Scots pine (Pinus sylvestris L.) and silver birch (Betula pendula Roth) in Norway are presented.
Matthias Schmidt   +2 more
doaj   +1 more source

Instance segmentation of individual tree crowns with YOLOv5: A comparison of approaches using the ForInstance benchmark LiDAR dataset

open access: yesISPRS Open Journal of Photogrammetry and Remote Sensing, 2023
Fine-grained information on the level of individual trees constitute key components for forest observation enabling forest management practices tackling the effects of climate change and the loss of biodiversity in forest ecosystems.
Adrian Straker   +6 more
doaj   +1 more source

Site classification vs. wood production: a case study based on Silver fir growth dynamics in the Western Carpathians

open access: yesJournal of Forest Science, 2011
We analysed wood production on an example of Silver fir growth ability within site units defined in the site classification that is currently used in the Western Carpathians.
M. Bošeľa, R. Petráš, Š. Šmelko
doaj   +1 more source

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