Results 31 to 40 of about 29,854 (219)

Modeling of Dead Wood Potential Based on Tree Stand Data [PDF]

Forests, 2020
Here we present a framework for identifying areas with high dead wood potential (DWP) for conservation planning needs. The amount and quality of dead wood and dying trees are some of the most important factors for biodiversity in forests. As they are easy to recognize on site, it is widely used as a surrogate marker for ecological quality of forests ...
Leikola, Niko, Halme, Panu, Heinaro, Einari, Lahtinen, Ari, Tanhuanpää, Topi, Mikkonen, Ninni   +6 more
openaire   +3 more sources

A multi-scale approach to detecting standing dead trees in UAV RGB images based on improved faster R-CNN

PLoS ONE, 2023
The health of the trees in the forest affects the ecological environment, so timely detection of Standing Dead Trees (SDTs) plays an important role in forest management.
Xiangtao Jiang, Zhenyu Wu, Siyu Han, Hui Yan, Bolei Zhou, Jianjun Li   +5 more
semanticscholar   +1 more source

Comparing field measurements and annotations as training data for UAV-based detection of standing dead trees in coniferous forest

International Journal of Remote Sensing, 2023
Deadwood provides a habitat for a large number of species and acts as a significant carbon storage. Thus, deadwood mapping allows planning various actions related to biodiversity conservation and forest management.
E. Heinaro, Topi Tanhuanpää, A. Kukko, T. Hakala, M. Holopainen   +4 more
semanticscholar   +1 more source

Classification of Tree Species and Standing Dead Trees with Lidar Point Clouds Using Two Deep Neural Networks: PointCNN and 3DmFV-Net

PFG – Journal of Photogrammetry Remote Sensing and Geoinformation Science, 2022
Knowledge about tree species distribution is important for forest management and for modeling and protecting biodiversity in forests. Methods based on images are inherently limited to the forest canopy.
Maximilian Hell, M. Brandmeier, S. Briechle, P. Krzystek   +3 more
semanticscholar   +1 more source

Simulations on the occurrence of dead trees in natural pine stands. [PDF]

Silva Fennica, 1989
The study aimed at recognizing the phases of forest succession where dead trees most probably occur. The model simulations showed that the increasing occurrence of dead trees culminated after the canopy closure. Thereafter the occurrence of dead trees decreased representing a pattern where high frequency of dead trees was followed by low frequency of ...
Kellomäki, Seppo, Kolström, Taneli, Väisänen, Hannu, Valtonen, Esko   +3 more
openaire   +2 more sources

Seed dispersal and tree legacies influence spatial patterns of plant invasion dynamics

Frontiers in Applied Mathematics and Statistics, 2023
Invasive plant species alter community dynamics and ecosystem properties, potentially leading to regime shifts. Here, the invasion of a non-native tree species into a stand of native tree species is simulated using an agent-based model.
Yuanming Lu, Junfei Xia, Lukas J. Magee, Donald L. DeAngelis   +3 more
doaj   +1 more source

Xylotrophs in spruce stands of the Kologrivsky Forest Nature Reserve, Russia [PDF]

E3S Web of Conferences, 2023
The purpose of the study is to study the species composition of xylotrophic fungi in spruce stands of the Kologrivsky Forest Nature Reserve (Kostroma region, Russia).
Lebedev Alexander, Gemonov Alexander, Saykova Darya, Gostev Vladimir, Volkov Sergei   +4 more
doaj   +1 more source

Impacts of the US southeast wood pellet industry on local forest carbon stocks

Scientific Reports, 2022
We assessed the net impacts of a wood-dependent pellet industry of global importance on contemporaneous local forest carbon component pools (live trees, standing-dead trees, soils) and total stocks.
Francisco X. Aguilar, Houston Sudekum, Ronald McGarvey, Benjamin Knapp, Grant Domke, Consuelo Brandeis   +5 more
doaj   +1 more source

Composition of live, dead and downed trees in Järvselja old-growth forest

Metsanduslikud Uurimused, 2022
The study area is in the Järvselja Training and Experimental Forest Centre, Estonia. The conservation of Järvselja old-growth forest started in 1924 when the area was excluded from all management activities and left to natural development.
Kangur Ahto, Nigul Kristi, Padari Allar, Kiviste Andres, Korjus Henn, Laarmann Diana, Põldveer Eneli, Mitt Risto, Frelich Lee E., Jõgiste Kalev, Stanturf John A., Paluots Teele, Kängsepp Vivika, Jürgenson Harli, Noe Steffen M., Sims Allan, Metslaid Marek   +16 more
doaj   +1 more source

Large-Scale Mapping of Tree Species and Dead Trees in Šumava National Park and Bavarian Forest National Park Using Lidar and Multispectral Imagery

Remote Sensing, 2020
Knowledge of forest structures—and of dead wood in particular—is fundamental to understanding, managing, and preserving the biodiversity of our forests.
Peter Krzystek, Alla Serebryanyk, Claudius Schnörr, Jaroslav Červenka, Marco Heurich   +4 more
doaj   +1 more source