Results 71 to 80 of about 125,509 (280)

Use of local and global maps of forest canopy height and aboveground biomass to enhance local estimates of biomass in miombo woodlands in Tanzania

International Journal of Applied Earth Observation and Geoinformation, 2020
Field surveys are often a primary source of aboveground biomass (AGB) data, but plot-based estimates of parameters related to AGB are often not sufficiently precise, particularly not in tropical countries.
E. Næsset, R. McRoberts, A. Pekkarinen, S. Saatchi, M. Santoro, Ø. Trier, Eliakimu Zahabu, T. Gobakken   +7 more
semanticscholar   +1 more source

Validation of ICESat-2 terrain and canopy heights in boreal forests

Remote Sensing of Environment, 2020
Abstract NASA's Ice, Cloud and Land Elevation Satellite-2 (ICESat-2) launched in the fall of 2018 and is collecting vegetation canopy height and terrain measurements globally. In this paper we validate the terrain and canopy heights estimated from 11 months of ICESat-2 data using airborne lidar data collected in southern Finland. Overall, the terrain
Amy Neuenschwander, Eric Guenther, Joanne C. White, Laura Duncanson, Paul Montesano   +4 more
openaire   +1 more source

A mosaic of microclimates: biodiversity outcomes and wildlife habitat potential in large‐scale solar facilities

Biological Reviews, EarlyView.
ABSTRACT The rapid global expansion of photovoltaic (PV) solar facilities, now comprising nearly 80% of the recent and projected growth of renewable electricity, represents one of the most significant land‐use changes of the 21st century. While PV facilities are critical for decarbonising energy systems, their large spatial footprint and infrastructure
Tom Armstrong, Caleb L. Loughran, Joshua R. Ennen, Kristoffer H. Wild, Eric J. Nordberg   +4 more
wiley   +1 more source

Orchard netting impacts on biodiversity leading to cascading effects at the ecosystem level

Biological Reviews, EarlyView.
ABSTRACT Agriculture must ensure food production without further compromising the ecosystem functions upon which it depends. Agricultural practices should therefore avoid harming farmland biodiversity, especially of taxa that supply the key ecosystem services (e.g.
Corrado Alessandrini, Karan Sethi, Emanuela Granata, Ekaterina Mogilnaia, Valeria Vitangeli, Giovanni Zanfei, Chiara Fedrigotti, Paolo Biella, Dino Scaravelli, Luigi Marchesi, Péter Batáry, Diego Rubolini, Paolo Pedrini, Mattia Brambilla   +13 more
wiley   +1 more source

What drives animal responses to high severity fire? The role of functional traits

Biological Reviews, EarlyView.
ABSTRACT Fire regimes are changing worldwide, with increases in the frequency, extent, and severity of fires posing growing risks to biodiversity. Fire severity – the degree of habitat alteration following fire – strongly influences both immediate survival and long‐term recovery of fauna.
Grace A. Vielleux, Trent D. Penman, Victoria A. Reynolds, Matthew H. Swan   +3 more
wiley   +1 more source

Modified F‐tests for assessing tree radial growth under linear‐circular regression models with correlated errors: A comprehensive toolbox rooted in G. E. P. Box's theorems

Canadian Journal of Statistics, EarlyView.
Abstract Annual tree growth is a complex biological process. Modelling radial growth in the trunk by linear‐circular regression with one mode and correlated errors has allowed the definition and assessment of a preferred direction for 1 and 2 years. Here, modified F$$ F $$‐tests are presented for 3 years, 1 mode/year; 1 year, 2 modes for possible main ...
Pierre Dutilleul, Tomoaki Imoto, Kunio Shimizu   +2 more
wiley   +1 more source

Microclimate mediates the strength and direction of avian biotic interactions

Ecography, EarlyView.
Theory predicts that the strength and direction of species interactions can shift from being competitive in benign environments toward being facilitative in stressful environments. However, the environmental context dependency of species interactions has rarely been tested in animal communities.
Sarah J. K. Frey, Brian D. Gerber, Adam S. Hadley, Hankyu Kim, Madison Sutton, Nina C. Ferrari, Matthew G. Betts   +6 more
wiley   +1 more source

Tracking Southern China’s Forest Growth from Space

Journal of Remote Sensing
Forest canopy height reflects the vertical structure of forests and gives indications on the growth capacity of trees and the level of forest biomass.
Jingyi Chang, Xiaowei Tong, Martin Brandt, Wenmin Zhang, Yuemin Yue, Jun Lu, Siyu Liu, Lu Zhai, Kelin Wang   +8 more
doaj   +1 more source

Estimation of Forest Height and Canopy Density From a Single InSAR Correlation Coefficient [PDF]

IEEE Geoscience and Remote Sensing Letters, 2015
A two-level model (TLM) is introduced and investigated for the estimation of forest height and canopy density from a single ground-corrected InSAR complex correlation coefficient. The TLM models forest as two scattering levels, namely, ground and vegetation, separated by a distance Delta h and with area-weighted backscatter ratio mu.
Maciej Jerzy Soja, Henrik Persson, Lars M. H. Ulander   +2 more
openaire   +2 more sources

Topography constrains the climatic response of treeline migration in Taiwan's subalpine forests

Ecography, EarlyView.
Treelines are moving upslope, but the rates and drivers differ among different regions, globally. Many studies have examined the relationship between treeline movement and climate change, particularly rising temperature, while the role of topographical factors has received much less attention, despite the longstanding recognition of its importance.
Kuan‐Yu Chen, Jonathan Peereman, J. Aaron Hogan, Teng‐Chiu Lin   +3 more
wiley   +1 more source