Results 41 to 50 of about 544 (160)

Intra‐annual variation of fecal nitrogen of red deer in Mediterranean habitats and its relationship with NDVI and bioclimatic indices

The Journal of Wildlife Management, Volume 90, Issue 1, January 2026.
This study on red deer in a fenced Mediterranean estate found strong intra‐annual variation in fecal nitrogen, reflecting seasonal diet quality changes. Fecal nitrogen was associated with normalized difference vegetation index (NDVI) from herbaceous vegetation but not with bioclimatic indices (real bioclimatic intensity [RBI], standardized ...
Eva de la Peña, Jesús Fernández‐Habas, Rafael Villafuerte‐Jordán, José M. García del Barrio, Juan Carranza, María Martínez‐Jauregui   +5 more
wiley   +1 more source

Characterisation of Functional-Trait Dynamics at High Spatial Resolution in a Mediterranean Forest from Sentinel-2 and Ground-Truth Data

Remote Sensing, 2018
The characterisation of functional-trait dynamics of vegetation from remotely sensed data complements the structural characterisation of ecosystems. In this study we characterised for the first time the spatial heterogeneity of the intra-annual dynamics ...
Santiago Schauman, Aleixandre Verger, Iolanda Filella, Josep Peñuelas   +3 more
doaj   +1 more source

A Century of Drought Research (1900–2023): Scientific Developments, Methodological Innovations, and Emerging Frontiers

Water Resources Research, Volume 62, Issue 1, January 2026.
Abstract Drought significantly affects water resources, agriculture, energy, and ecosystems, revealing enduring socio‐economic vulnerabilities over the centuries. This review synthesizes a century of development and recent advances in drought research (1900–2023), drawing on a bibliometric analysis of over 152,000 peer‐reviewed publications. The review
Amitesh Sabut, Ashok Mishra
wiley   +1 more source

A Comprehensive Evaluation of Global Fraction of Absorbed Photosynthetically Active Radiation (FAPAR) Products of MODIS, GLASS, and GEO Over China

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The fraction of absorbed photosynthetically active radiation (FAPAR) is defined as the fraction of incident solar radiation absorbed by vegetation for photosynthesis.
Liyong Xia, Shaoqi Gong, Li Li, Hailong Zhang, Jianguang Wen, Lu Han, Xiaozhou Xin, Shanshan Yu, Qinhuo Liu   +8 more
doaj   +1 more source

A New FAPAR Analytical Model Based on the Law of Energy Conservation: A Case Study in China

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2014
The fraction of absorbed photosynthetically active radiation (FAPAR) characterizes the energy-absorption ability of the vegetation canopy. It is a critical input to many land-surface models such as crop growth models, net primary productivity models, and
Wenjie Fan, Yuan Liu, Xiru Xu, Gaoxing Chen, Beitong Zhang   +4 more
doaj   +1 more source

An RTM-Driven Machine Learning Approach for Estimating High-Resolution FAPAR From LANDSAT 5/7/8/9 Surface Reflectance

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Fraction of absorbed photosynthetically active radiation (FAPAR) is an essential indicator of vegetation productivity and carbon uptake. Although coarse-resolution FAPAR products from moderate-resolution imaging spectroradiometer (MODIS) and visible ...
Guodong Zhang, Gaofei Yin, Yi Zhang, Jiangchuan Hu, Zongyan Li, Changjing Wang, Dujuan Ma, Jiangliu Xie   +7 more
doaj   +1 more source

Constraining a land-surface model with multiple observations by application of the MPI-Carbon Cycle Data Assimilation System V1.0 [PDF]

Geoscientific Model Development, 2016
We describe the Max Planck Institute Carbon Cycle Data Assimilation System (MPI-CCDAS) built around the tangent-linear version of the JSBACH land-surface scheme, which is part of the MPI-Earth System Model v1.
G. J. Schürmann, T. Kaminski, C. Köstler, N. Carvalhais, M. Voßbeck, J. Kattge, R. Giering, C. Rödenbeck, M. Heimann, S. Zaehle   +9 more
doaj   +1 more source

Radiation use and understory aboveground net primary production in a temperate dryland

Ecosphere, Volume 16, Issue 12, December 2025.
Abstract We investigated the spatial and temporal variability of herbaceous radiation use efficiency (RUEh$$ {\mathrm{RUE}}_h $$) and herbaceous aboveground net primary production (ANPPh$$ {\mathrm{ANPP}}_h $$) of big sagebrush ecosystems in Wyoming's Upper Green River Basin.
Samuel Wilson, José M. Paruelo, Ingrid C. Burke, William K. Lauenroth   +3 more
wiley   +1 more source

Dominant role of benthic photosynthesis for the metabolism of carbonate sands in a subtropical inner shelf

Limnology and Oceanography, Volume 70, Issue 12, Page 3621-3633, December 2025.
Abstract Carbonate coral sands are an integral part of the carbon and nutrient cycles in subtropical and tropical coastal environments. Recent studies indicate that nearshore carbonate sands may be hotspots for organic matter production and respiration, but the processes and their controls are poorly understood due to a lack of noninvasive in situ ...
Alireza Merikhi, Peter Berg, Markus Huettel   +2 more
wiley   +1 more source

Studying the change in fAPAR after forest fires in Siberia using MODIS [PDF]

International Journal of Remote Sensing, 2008
Disturbance events such as fire have major effects on forest dynamics, succession and the carbon cycle in the boreal biome. This paper focuses on establishing whether characteristic spatio-temporal patterns of the fraction of Absorbed Photosynthetically Active Radiation (fAPAR) occur in the initial two years after a fire event in Siberian boreal ...
Cuevas-González, Maria, Gerard, France, Balzter, Heiko, Riaño, David   +3 more
openaire   +3 more sources