Results 61 to 70 of about 1,194 (211)

Land birds on atolls: diversity, origin, and function

Biological Reviews, EarlyView.
ABSTRACT Oceanic islands are global hotspots of avian biodiversity and endemism. Their isolation and distinct environmental conditions have uniquely shaped the evolutionary trajectories of island birds, while, in turn, land bird communities have become critical providers of ecological functions to island ecosystems.
Sebastian Steibl, Alex S. Wegmann, Nick D. Holmes, Caitlin E. Andrews, Gérard Rocamora, Simon Ducatez, James C. Russell   +6 more
wiley   +1 more source

Hot and cold deserts as eco‐evolutionary arenas for understanding plant resistance to multiple abiotic stressors

Biological Reviews, EarlyView.
ABSTRACT During their long evolutionary history, land plants have evolved a range of adaptations to different abiotic stressors. These help explain present‐day diversity and distribution patterns, as well as the potential resilience of natural and agricultural systems to a changing climate. Most previous research has focused on adaptation to individual
Marc Fradera‐Soler, Natasha Barbolini, Anže Žerdoner Čalasan, Marian Schubert, Catarina Rydin, Olwen M. Grace, Aelys M. Humphreys   +6 more
wiley   +1 more source

Deriving General Energy Predictors for Pnictogen Bonding

Chemistry – A European Journal, EarlyView.
This study derives general energetic predictors for pure pnictogen bonds from nitrogen to bismuth based on the potential energy density at the bond critical point. The research highlights the increasing occurrence of secondary interactions for heavier elements.
Jan Langwald, Antonio Frontera
wiley   +1 more source

Seismic analysis and design of tunnels within fault ground: A review

Deep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

Investigation on tunnel stability considering pipe‐roof support with transparent soil technology

Deep Underground Science and Engineering, EarlyView.
This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia, Yunpeng Ji, Zhao Lu, Honghua Zhao, Limin Zhang   +4 more
wiley   +1 more source

Deep learning-based automatic tree-level crown detection from high-resolution UAV imagery for aboveground carbon stock estimation

Frontiers in Plant Science
Accurate delineation of individual tree crowns is essential for forest resource management and carbon stock estimation. However, traditional manual interpretation is inefficient under complex forest conditions, and existing deep learning-based object ...
Hancong Fu, Hancong Fu, Hengqian Zhao, Xiadan Huangfu, Tian Han   +4 more
doaj   +1 more source

Embryonic development of the Mediterranean starfish Hacelia attenuata

Developmental Dynamics, EarlyView.
Abstract Background Starfish play essential ecological roles as predators and ecosystem regulators; however, detailed developmental descriptions exist for only a handful of species, none of which are from the Mediterranean Sea. Results In this study, we provide the first full account of the development of the Mediterranean starfish Hacelia attenuata ...
Silvia Caballero‐Mancebo, Laurent Gilletta, Janet Chenevert, Stefania Castagnetti   +3 more
wiley   +1 more source

Adaptive multi-source instance segmentation for individual tree crown delineation using UAV multispectral imagery and canopy height models

Ecological Informatics
Accurate delineation of individual tree crowns is essential for precision forest management, carbon accounting, and ecological monitoring, yet it remains challenging due to crown overlap, shadowing effects, and the limited ability of single-source ...
Zhao Sun, Yunhong Xie, Guofeng He, Shuanglin Yin, Bisheng Lu, Yunlong Liu, Jing Su, Xin Yuan   +7 more
doaj   +1 more source

Integration of tree allometry rules to treetops detection and tree crowns delineation using airborne lidar data

iForest - Biogeosciences and Forestry, 2017
Airborne laser scanning (ALS) has recently gained increasing attention in forestry, as ALS data may facilitate the efficient assessment of forest inventory attributes and ecological indicators related to forest stand structure.
Sačkov I, Hlásny T, Bucha T, Juriš M
doaj   +1 more source

Orthodentine‐osteodentine and osteocytic‐anosteocytic transition inferred from Silurian stem chondrichthyan dermal jawbones with ever‐white teeth overgrown by brown denticles

Developmental Dynamics, EarlyView.
Abstract Background The dentigerous jawbones of a 423‐million‐year‐old stem chondrichthyan (ischnacanthid acanthodian) carry a characteristic combination of multi‐row non‐shedding white teeth with brownish overgrowing denticles. The color distinction makes it a good model for observing the interaction between two odontode lineages, but the nature of ...
Jia‐Cih Kang, Henning Blom, Tiiu Märss, Donglei Chen   +3 more
wiley   +1 more source