Results 41 to 50 of about 6,220 (168)

Gamma Rays Signal the Vulnerability of Forest to Extreme Drought

Geophysical Research Letters, Volume 53, Issue 15, 16 August 2026.
Abstract Extreme drought and heat are driving forest die‐off globally, yet regional‐scale mapping of subsurface water storage capacity, governing forest vulnerability, remains a major challenge. Here, we demonstrate that airborne gamma‐ray spectrometry (GRS) of potassium (40K) decay provides a powerful proxy for subsurface constraints on water ...
Gavan S. McGrath, Joseph B. Fontaine, Richard Van Dongen, Katinka X. Ruthrof   +3 more
wiley   +1 more source

Evaluating and comparing the performance of ICESat-2 and GEDI data for estimating aboveground biomass in mangroves

International Journal of Digital Earth
The launch of the ICESat-2 and GEDI spaceborne LiDAR missions has provided new opportunities for large-scale estimation of mangrove aboveground biomass density (AGBD); however, their footprint-scale performance remains unclear.
Jianan Yu, Sheng Nie, Wenjie Liu, Zhongyi Sun, Cheng Wang, Xiaohuan Xi, Xiaoxiao Zhu, Mengyang Fang   +7 more
doaj   +1 more source

Modelling forest volume with small area estimation of forest inventory using GEDI footprints as auxiliary information

International Journal of Applied Earth Observations and Geoinformation, 2022
The French National Forest Inventory provides detailed forest information up to large national and regional scales. Forest inventory for small areas of interest within a large population is equally important for decision making, such as for local forest ...
Shaohui Zhang, Cédric Vega, Christine Deleuze, Sylvie Durrieu, Pierre Barbillon, Olivier Bouriaud, Jean-Pierre Renaud   +6 more
doaj   +1 more source

The contribution of small trees to carbon stocks along a recovery gradient in the Amazonia

Ecosphere, Volume 17, Issue 8, August 2026.
Abstract Most ecological knowledge about carbon recovery during natural regeneration in tropical regions has focused on individuals exceeding 10 cm in diameter. However, the contribution of smaller individuals to aboveground carbon (AGC) across successional gradients remains poorly quantified, despite their potentially substantial role during early ...
Luiz Antonio Soares Cardoso, Fernando Elias, Eduardo Queiroz Marques, Lorrayne Aparecida Gonçalves, Joice Nunes Ferreira, Erika Berenguer, Ima Célia Guimarães Vieira, Jos Barlow, Izildinha de Souza Miranda, Marcelo Tabarelli, Rodrigo Oliveira do Nascimento, Luiz Eduardo Oliveira e Cruz de Aragão, Gustavo Schwartz, Divino Vicente Silvério   +13 more
wiley   +1 more source

Unusually High Global End Diastolic Index Associated with Optimal Cardiac Index in Two Critically Ill Patients

Intensive Care Research, 2021
The optimal management of hemodynamic disorders among critically ill patients requires an accurate assessment of hemodynamic status. Global End Diastolic Index (GEDI) is taken for a more reliable indicator of preload in critically ill patients than ...
Xiaoqing Wu, Desheng Chen, Chen Li, Jun Duan   +3 more
doaj   +1 more source

Computational tools for assessing forest recovery with GEDI shots and forest change maps

Science of Remote Sensing, 2023
Tropical secondary forests are ecosystems of critical importance for protecting biodiversity, buffering primary forest loss, and sequestering atmospheric carbon. Monitoring growth and carbon sequestration in secondary forests is difficult, with inventory
Amelia Holcomb, Simon V. Mathis, David A. Coomes, Srinivasan Keshav   +3 more
doaj   +1 more source

A primer on forest structure measurement with lidar for ecologists

Ecosphere, Volume 17, Issue 8, August 2026.
Abstract Light detection and ranging (lidar) technology has fundamentally advanced the way we measure forest structure, facilitating new insights into ecological processes. Lidar for forest ecology applications is deployed on multiple types of platforms that operate from the ground, air, or space, and each has associated strengths and limitations ...
K. C. Cushman, Kamil Král, Angelica M. Almeyda Zambrano, Eben N. Broadbent, Martin Krůček, Alice Rosen, Sean M. McMahon   +6 more
wiley   +1 more source

Modeling Worldwide Tree Biodiversity Using Canopy Structure Metrics from Global Ecosystem Dynamics Investigation Data

Remote Sensing
Accurately quantifying global tree biodiversity is critical for enhancing forest ecosystem management and forest biodiversity conservation. With the launch of NASA’s Global Ecosystem Dynamics Investigation (GEDI), we evaluated the efficacy of space-borne
Jin Xu, Kjirsten Coleman, Volker C. Radeloff, Melissa Songer, Qiongyu Huang   +4 more
doaj   +1 more source

Frailty‐associated outcomes in geriatric emergency medicine ward patients: A retrospective cohort study informing program development

Hong Kong Journal of Emergency Medicine, Volume 33, Issue 4, August 2026.
Abstract Background Frail elderly patients require more interventions, and longer hospitalizations due to their complex health needs. The Emergency Medicine Ward (EMW) aims to provide acute care for patients with low‐acuity medical issues, often using a multidisciplinary approach for holistic care and discharge.
Tsz Kiu Chan, Man Ting Lau, Ka In Chan, Yuen Wa Ip, Wing Yuk Chan, Sze Yan Pui, Ying Ying Lam, Shing Ko, Oi Fung Wong, Sau Lai Chan, Candy Leung, Tsz Wah Patrick So, Po Fan Paul Chui, Wai Bik Geraldine Ng   +13 more
wiley   +1 more source

Use of GEDI Signal and Environmental Parameters to Improve Canopy Height Estimation over Tropical Forest Ecosystems in Mayotte Island

Canadian Journal of Remote Sensing
Canopy height is a fundamental parameter for describing forest ecosystems. GEDI is a spaceborne LiDAR system that was designed to measure vegetation’s vertical structure at a global scale.
Kamel Lahssini, Nicolas Baghdadi, Guerric Le Maire, Stéphane Dupuy, Ibrahim Fayad   +4 more
doaj   +1 more source