Results 11 to 20 of about 29,854 (219)

CLASSIFICATION OF TREE SPECIES AND STANDING DEAD TREES BY FUSING UAV-BASED LIDAR DATA AND MULTISPECTRAL IMAGERY IN THE 3D DEEP NEURAL NETWORK POINTNET++ [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Knowledge of tree species mapping and of dead wood in particular is fundamental to managing our forests. Although individual tree-based approaches using lidar can successfully distinguish between deciduous and coniferous trees, the classification of ...
S. Briechle, P. Krzystek, G. Vosselman
doaj   +2 more sources

Drivers of greenhouse gas emissions from standing dead trees in ghost forests [PDF]

Biogeochemistry, 2021
Abstract Coastal freshwater forested wetlands are rapidly transitioning from forest to marsh, leaving behind many standing dead trees (snags) in areas often called ‘ghost forests’. Snags can act as conduits for soil produced greenhouse gases (GHG) and can also be sources as they decompose.
Melinda Martinez, M. Ardón
semanticscholar   +3 more sources

Stock of standing dead trees in boreal forests of Central Siberia

IOP Conference Series: Earth and Environmental Science, 2021
A significant part of carbon assimilated by forest is deposited in tree trunks. Growth and development of tree stands is accompanied by accumulation of standing dead trees (snags) due to natural tree mortality and as a result of the impact of exogenous ...
L. Mukhortova, L. Krivobokov, D. Schepaschenko, A. Knorre, D. S. Sobachkin   +4 more
semanticscholar   +4 more sources

Standing dead trees as indicators of vertebrate diversity: Bringing continuity to the ecological role of senescent trees in austral temperate forests

Ecological Indicators, 2021
Standing dead trees are known to house diverse assemblages of vertebrates in temperate forests worldwide. In temperate austral forests of South America, however, the functional role of dead trees has been mostly focused on cavity provision, but other ...
Dario Moreira-Arce, Pablo M. Vergara, Andrés Fierro, Erick Pincheira, Silvio J. Crespin, Alberto Alaniz, Mario A. Carvajal   +6 more
doaj   +2 more sources

Comparison of Different Remotely Sensed Data Sources for Detection of Presence of Standing Dead Trees Using a Tree-Based Approach

Remote Sensing, 2023
Deadwood is an important key ecological element for forest ecosystem biodiversity. Its low occurrence, especially in managed forests, makes inventory through field campaigns challenging. Remote sensing can provide a more objective and systematic approach
Marie-Claude Jutras-Perreault, T. Gobakken, E. Næsset, H. Ørka   +3 more
semanticscholar   +3 more sources

Detecting the presence of standing dead trees using airborne laser scanning and optical data

Scandinavian Journal of Forest Research, 2023
Deadwood is an important indicator of biodiversity in forest ecosystems. Identifying areas with large density of standing dead trees through field inventory is challenging, and remotely sensed data can provide a more systematic approach.
Marie-Claude Jutras-Perreault, E. Næsset, T. Gobakken, H. Ørka   +3 more
semanticscholar   +2 more sources

Standing dead trees contribute significantly to carbon budgets in Australian savannas

International Journal of Wildland Fire, 2020
Previous estimates of greenhouse gas emissions from Australian savanna fires have incorporated on-ground dead wood but ignored standing dead trees. However, research from eucalypt woodlands in southern Queensland has shown that the two pools of dead ...
G. Cook, A. Liedloff, C. P. Meyer, A. Richards, S. Bray   +4 more
semanticscholar   +3 more sources

Pine root exploration of standing dead tree trunks: a short-cut biocycling process

Forest Systems, 2023
Aim of study: To characterize the colonization of Pinus herrerae roots in trunks of dead standing trees and to evaluate the composition of roots and decomposing tissues of standing dead trees. Area of study. Jaguariaíva, Paraná state, Southern Brazil.
Rangel CONSALTER, Antonio C. V. MOTTA , Julierme Z. BARBOSA, Fabiane M. VEZZANI, Rafael A. RUBILAR, Stephen A. PRIOR, Marcos V. M. BASSACO   +6 more
doaj   +3 more sources

Microbial Communities in Standing Dead Trees in Ghost Forests are Largely Aerobic, Saprophytic, and Methanotrophic

Current Microbiology
Standing dead trees (snags) are recognized for their influence on methane (CH4) cycling in coastal wetlands, yet the biogeochemical processes that control the magnitude and direction of fluxes across the snag-atmosphere interface are not fully elucidated.
M. J. Carmichael, Melinda Martinez, S. Bräuer, M. Ardón   +3 more
semanticscholar   +3 more sources

Accounting for density reduction and structural loss in standing dead trees: Implications for forest biomass and carbon stock estimates in the United States

Carbon Balance and Management, 2011
Background Standing dead trees are one component of forest ecosystem dead wood carbon (C) pools, whose national stock is estimated by the U.S. as required by the United Nations Framework Convention on Climate Change.
Domke Grant M, Woodall Christopher W, Smith James E   +2 more
doaj   +3 more sources