Results 131 to 140 of about 1,742,782 (290)

Validating antler‐ and movement‐based estimates of caribou reproduction using video camera collars Validation des estimations de la reproduction du caribou basées sur la rétention des bois et  sur le déplacement à l'aide de colliers‐caméras

The Journal of Wildlife Management, EarlyView.
We used GPS video camera collar data from barren‐ground caribou in the Porcupine and Western Arctic herds to validate antler‐ and movement‐based methods for estimating annual reproductive metrics. Antler retention was highly accurate for estimating parturition, but the movement methods we tested performed marginally for estimating parturition and ...
Heather E. Johnson, Emily C. Racenet, Gabrielle L. Coulombe, Matthew D. Cameron, Kyle Joly, Martin Kienzler, Michael J. Suitor   +6 more
wiley   +1 more source

The Impact of Climate Change on Soil Erosion Rates in the Chernozem Zone of Ukraine

Land Degradation &Development, EarlyView.
ABSTRACT Soil degradation driven by accelerated water erosion threatens global food security. Quantitative estimates of soil erosion losses allow at‐risk areas to be identified and the success of soil management plans to be monitored. However, estimating soil erosion losses under changing climatic conditions is challenging, particularly at the scales ...
Alla V. Piatkova, Olexander O. Svitlychnyi, Nick A. Cutler   +2 more
wiley   +1 more source

Drifting snow. Physical processes and modelling

, 2002
Le transport de neige par le vent entraîne la formation de corniches et de plaques, génératrices d'avalanches en haute montagne, et la formation de congères sur les voies de communication en plaine. Il est de ce fait à l 'origine de risques naturels qui peuvent engendrer de graves conséquences pour les biens et les personnes.
Naaim-Bouvet, F., Naaim, M.
openaire   +1 more source

Heterogeneity and Controlling Mechanisms of Soil Organic Carbon Stocks Across Erosion Zones in China Under Future Climate Scenarios

Land Degradation &Development, EarlyView.
ABSTRACT Soil organic carbon (SOC), as a key indicator of global carbon cycling and climate change response, plays a critical role in regional ecological security and agricultural sustainability. This study employs three machine learning models including the LightGBM, XGBoost, and random forest to simulate the spatial distribution of topsoil SOC stocks
Xinxin Jin, Xintong Liu, Qianlai Zhuang, Zijiao Yang, Zicheng Wang, Chen Li, Shuai Wang, Yang Wang   +7 more
wiley   +1 more source

Comparative Effectiveness of Different Mulch Types and Application Rates for Reducing Runoff and Sediment Yield on Forest Skid Trails

Land Degradation &Development, EarlyView.
ABSTRACT Rehabilitation of skid trails following timber harvesting is critical for preserving forest soil integrity, particularly within ecologically sensitive ecosystems such as the Hyrcanian forests of northern Iran, a UNESCO World Heritage Site. Although mulching is widely recommended for erosion control, field evidence comparing different locally ...
Masoumeh Ahmadi, Meghdad Jourgholami, Baris Majnounian, Shahram Khalighi Sigaroodi, Francesco Latterini, Rachele Venanzi, Angela Lo Monaco, Rodolfo Picchio   +7 more
wiley   +1 more source

Revealing Dust Source Changes in East Asia From Past to Future: An Interpretable Deep Learning Approach

Land Degradation &Development, EarlyView.
ABSTRACT Aeolian dust source areas are controlled by climate and human activities and are closely associated with land degradation, yet their long‐term evolution under global warming remains insufficiently quantified. An integrated framework that couples a U‐Net segmentation model with Shapley Additive Explanations (SHAP) was built to map and attribute
Yanyu Li, Qizhong Wu, Xueshun Chen, Jiang Yue, Jieying He, Huaqiong Cheng   +5 more
wiley   +1 more source

Integrating Grain to Ground Motion Data for Critical Rock Bridge and Slope Failure Analysis

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Rock masses can fail catastrophically with little warning, yet their stability depends on hidden internal connections that channel forces and localise damage. Among these, rock bridges–a “known unknown” in slope mechanics–lock fractured rock and control how failure unfolds, but their concealed geometry and uncertain strength obscure where and ...
Antoinette Tordesillas, Shuo Zhou, Leonnardo Probst, Pat Bellett, Michal Nitka, Jacek Tejchman   +5 more
wiley   +1 more source

Using synthetic models to understand the detecting ability of ground‐penetrating radar for water‐conducting structures in the bedrock of formerly glaciated site

Near Surface Geophysics, EarlyView.
Abstract Utilizing synthetic models for the interpretation of ground‐penetrating radar (GPR) profiles can aid in the detection of hydrogeological structures by identifying their signatures. In this study, finite difference (FD) forward modelling was used to understand the detection ability of 50 MHz GPR for (1) the quaternary deposit–bedrock contact ...
Annika Katarina Åberg, Salla Eeva, Emilia Koivisto, Susanne Charlotta Åberg, Seija Kultti, Kirsti Korkka‐Niemi   +5 more
wiley   +1 more source

New Snow-Physics to Complement SSiB

Journal of the Meteorological Society of Japan. Ser. II, 1999
David M. Mocko, Greg K. Walker, Y. C. Sud   +2 more
openaire   +4 more sources

Reindeer grazing induces spatial and functional shifts in root systems of boreal pine forests

Oikos, EarlyView.
The spatial distribution of roots, laterally and vertically, is critical for nutrient and water uptake and for driving root‐associated carbon inputs and turnover. Large herbivores, such as reindeer, influence ecosystems belowground by altering aboveground vegetation composition and soil microclimate.
Johannes Cunow, Femke Pijcke, Johan Olofsson, Maria Väisänen, Gesche Blume‐Werry   +4 more
wiley   +1 more source