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Effect of Tree Phenology on LiDAR Measurement of Mediterranean Forest Structure

William Simonson, Harriet Allen, David Coomes
2018 Remote Sensing  
Retrieval of forest biophysical properties using airborne LiDAR is known to differ between leaf-on and leaf-off states of deciduous trees, but much less is understood about the within-season effects of  ...  Our demonstration of which variables are more or less affected by spring-time leafing phenology has important implications for analyses of both canopy and sub-canopy vegetation layers from LiDAR surveys  ...  We are grateful for the cooperation of all involved. Our thanks to Ruben Valbuena for comments on an earlier draft of this paper. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/rs10050659 fatcat:isdcgph4lzhxlfi6u6pmct5jce

Characterizing potential wildland fire fuel in live vegetation in the Mediterranean region

Silvano Fares, Sofia Bajocco, Luca Salvati, Nicolò Camarretta, Jean-Luc Dupuy, Gavriil Xanthopoulos, Mercedes Guijarro, Javier Madrigal, Carmen Hernando, Piermaria Corona
2017 Annals of Forest Science  
Standardization of methodologies and a better understanding of plant attributes and phenological status can improve models for fire management.  ...  & Key message Fuel moisture and chemical content affecting live plant flammability can be measured through laboratory and field techniques, or remotely assessed.  ...  Acknowledgements This paper has been produced under the framework of the project MedWildFireLab ("Global Change Impacts on Wildland Fire Behaviour and Uses in Mediterranean Forest Ecosystems, towards a  ... 
doi:10.1007/s13595-016-0599-5 fatcat:f5llignlsjc73cdzrcuhwpscum

Environmental drivers of fire severity in extreme fire events that affect Mediterranean pine forest ecosystems

Paula García-Llamas, Susana Suárez-Seoane, Angela Taboada, Alfonso Fernández-Manso, Carmen Quintano, Víctor Fernández-García, José Manuel Fernández-Guisuraga, Elena Marcos, Leonor Calvo
2019 Forest Ecology and Management  
Nevertheless, the effect of pre-fire vegetation greenness was strongly dependent on interactions with the pre-fire vertical structural arrangement of vegetation, fire history and weather conditions (i.e  ...  The increasing occurrence of large and severe fires in Mediterranean forest ecosystems produces major ecological and socio-economic damage.  ...  Fernández-Guisuraga were supported by a predoctoral fellowship from the Ministry of Education, Culture and  ... 
doi:10.1016/j.foreco.2018.10.051 fatcat:2eutqlghxvdgpnys3ao6gdomdy

Forest Resources Assessments: Mensuration, Inventory and Planning

Iciar Alberdi
2021 Forests  
on forest biodiversity, risks, and disturbances, or social indicators [...]  ...  There is much demand for forest information at the regional, national, and international level, covering aspects as varied as growing stock, carbon pools, and non-wood forest products, as well as information  ...  [4] focuses for the first time on forecasting the variation in forest carbon stocks and living biomass in Mediterranean forests due to forest management practices and wildfires.  ... 
doi:10.3390/f12030296 fatcat:pgos7qt6vbfdjfcukwd4dvvnai

Remote Sensing Technologies for Assessing Climate-Smart Criteria in Mountain Forests [chapter]

Chiara Torresan, Sebastiaan Luyssaert, Gianluca Filippa, Mohammad Imangholiloo, Rachel Gaulton
2021 Managing Forest Ecosystems  
AbstractMonitoring forest responses to climate-smart forestry (CSF) is necessary to determine whether forest management is on track to contribute to the reduction and/or removal of greenhouse gas emissions  ...  Forest cover, growing stock, abiotic, biotic, and human-induced forest damage, and tree composition indicators can be readily assessed by using established remote sensing techniques.  ...  It is known that the diameter of a tree can generally be modelled as a function of tree height or tree crown or measures related to stand structure (Filipescu et al. 2012) and derived from LiDAR data  ... 
doi:10.1007/978-3-030-80767-2_11 fatcat:5gzjgydxsfd4zgxuagkbi4nirq

Advances in Remote Sensing of Post-Fire Vegetation Recovery Monitoring - A Review [chapter]

Ioannis Gitas, George Mitri, Sander Veraverbeke, Anastasia Polychronaki
2012 Remote Sensing of Biomass - Principles and Applications  
The review was also supported by the Lebanese National Council for Scientific Research (CNRS) and part of the work was carried out at the Jet Propulsion Laboratory, California Institute of Technology,  ...  Acknowledgments This publication was financially supported by the Aristotle University of Thessaloniki (AUTh) Research Committee.  ...  However, no significant correlation was found between the Landsat measures of post-fire effect and the LIDAR -derived measures of pre-fire forest structure.  ... 
doi:10.5772/20571 fatcat:63jbdemtsrgvbkqx5hplx6mnmm

Available and missing data to model impact of climate change on European forests

Paloma Ruiz-Benito, Giorgio Vacchiano, Emily R. Lines, Christopher P.O. Reyer, Sophia Ratcliffe, Xavier Morin, Florian Hartig, Annikki Mäkelä, Rasoul Yousefpour, Jimena E. Chaves, Alicia Palacios-Orueta, Marta Benito-Garzón (+8 others)
2020 Ecological Modelling  
To assess forest impacts from climate change, the existing empirical information must be structured, harmonised and assimilated into a form suitable to develop and test state-of-the-art forest and ecosystem  ...  The combination of empirical data collected at large spatial and long temporal scales with suitable modelling approaches is key to understand forest dynamics under climate change.  ...  Acknowledgements We thank to Georges Kunstler for the recommendation of references regarding data biases. Appendix A.  ... 
doi:10.1016/j.ecolmodel.2019.108870 fatcat:6mv3qlt7wbe47alpzdya2e5oui

Remote Sensing and Ecosystem Services: Current Status and Future Opportunities for the Study of Bees and Pollination-Related Services

Sara M. Galbraith, L. A. Vierling, N. A. Bosque-Pérez
2015 Current Forestry Reports  
We then discuss future research opportunities, such as exploring LiDAR and radar for 3-D habitat measurements, mapping phenology in space and time, and direct measurement of pollination events and outcomes  ...  of pollination services on spatial scales that match large-scale management efforts, such as forest conservation policy.  ...  Compliance with Ethics Guidelines Conflict of Interest Dr.  ... 
doi:10.1007/s40725-015-0024-6 fatcat:h4227lrcufdwxjhbl7yfgswusy

Canopy Height Estimation in Mediterranean Forests of Spain with TanDEM-X Data

Cristina Gomez, Juan M Lopez-Sanchez, Noelia Romero-Puig, Jianjun Zhu, Haiqiang Fu, Wenjie He, Yanzhou Xie, Qinghua Xie
2021 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
We aimed to evaluate the capacity of TanDEM-X (TDX) data to assess canopy height in Mediterranean forests of Spain, which are of relatively short height (typically < 20 m), diverse in species and structure  ...  Index Terms-Forest canopy height, Mediterranean forest, Spain, synthetic aperture radar (SAR) interferometry, TanDEM-X (TDX).  ...  Overall, tree heights are shorter than in other biomes, with >90% of trees measured by the third rotation of the National Forest Inventory (NFI3) below 20 m.  ... 
doi:10.1109/jstars.2021.3060691 fatcat:hweudoz7bnegllh3k4hshgf4vy

Inferring plant functional diversity from space: the potential of Sentinel-2

Xuanlong Ma, Miguel D. Mahecha, Mirco Migliavacca, Fons van der Plas, Raquel Benavides, Sophia Ratcliffe, Jens Kattge, Ronny Richter, Talie Musavi, Lander Baeten, Ionut Barnoaiea, Friedrich J. Bohn (+14 others)
2019 Remote Sensing of Environment  
These field plots represent major European forest types, from boreal forests in Finland to Mediterranean mixed forests in Spain.  ...  Based on in-situ data collected in 2013 we computed functional dispersion (FDis), a measure of FD, using foliar and whole-plant traits of known ecological significance.  ...  -2 as SAR or LiDAR measurements are more sensitive to tree structure, which may improve the estimation of FD measured that integrates both leaf and whole plant traits .  ... 
doi:10.1016/j.rse.2019.111368 fatcat:oochi2pesvfnre54vecfa4baae

Analysis of Mediterranean Vegetation Fuel Type Changes Using Multitemporal LiDAR

Alba García-Cimarras, José Antonio Manzanera, Rubén Valbuena
2021 Forests  
Our approach was developed using low-density and publicly available datasets and was based on direct canopy fuel measurements from multi-return LiDAR data that can be accurately translated and mapped according  ...  On the other hand, loss of understory was more frequently detected in beech stands; thus, those forests place lower risk of wildfire spread.  ...  Acknowledgments: This work was supported by the Spanish Ministry of Education [FPU17/00423]. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/f12030335 fatcat:qqhbnffvonbx5dyityagwa27qm

Using Satellite NDVI Time-Series to Monitor Grazing Effects on Vegetation Productivity and Phenology in Heterogeneous Mediterranean Forests

Duarte Balata, Ivo Gama, Tiago Domingos, Vânia Proença
2022 Remote Sensing  
Here, we investigate if satellite data can be used to monitor the response of vegetation phenology and productivity to grazing disturbance in a heterogenous forest mosaic with herbaceous, shrub, and tree  ...  Results for shrubs and trees suggest a decline in peak productivity in grazed areas but no changes in phenology patterns.  ...  Mediterranean deciduous forest.  ... 
doi:10.3390/rs14102322 fatcat:jfzhbbyvqfcc3b7rwr6fxlen5a

Remote sensing for the Spanish forests in the 21st century: a review of advances, needs and opportunities

Cristina Gómez, Pablo Alejandro, Txomin Hermosilla, Fernando Montes, Cristina Pascual, Luis Angel Ruiz, Flor Álvarez-Taboada, Mihai Tanase, Ruben Valbuena
2019 Forest Systems  
In a context of complex demands on forest resources, identifying priorities for biodiversity and carbon budgets require accurate tools with sufficient temporal frequency.  ...  Forest fire identification and characterization are prevalent applications at the landscape scale, whereas structural assessments are the most widespread analyses carried out at limited extents.  ...  Simonson et al. (2018) explored the effects of phenology on LiDAR metrics in mixed stands of Quercus suber L. and Quercus canariensis Willd. in Los Alcornocales Natural Park (Cádiz).  ... 
doi:10.5424/fs/2019281-14221 fatcat:fzxqm3g2aza6tj45lrzvk4flza

Remote Sensing Techniques in Monitoring Post-Fire Effects and Patterns of Forest Recovery in Boreal Forest Regions: A Review

Thuan Chu, Xulin Guo
2013 Remote Sensing  
Forest fires, however, are also an ecological factor in how forest ecosystems form and function, as they affect the rate and characteristics of tree recruitment.  ...  However, a number of challenges remain before remote sensing practitioners will be able to better understand the effects of forest fires and how vegetation responds afterward.  ...  of Saskatchewan.  ... 
doi:10.3390/rs6010470 fatcat:rj27xx522rb2ra675uy3c76zle

A tree-ring perspective on the terrestrial carbon cycle

Flurin Babst, M. Ross Alexander, Paul Szejner, Olivier Bouriaud, Stefan Klesse, John Roden, Philippe Ciais, Benjamin Poulter, David Frank, David J. P. Moore, Valerie Trouet
2014 Oecologia  
A tree-ring perspective on the terrestrial carbon cycle." Oecologia 176(2): 307-322. http://dx. Abstract  ...  Acknowledgments this work was supported by the swiss national science Foundation (Grant pBsKp2_144034) and the Us Department of energy (Grant De-FOa-000749).  ...  Disentangling wood formation from canopy phenology is a prerequisite to refine remotely-sensed [e.g., light detection and ranging (LIDaR), vegetation indices, phenology cameras] estimates of forest productivity  ... 
doi:10.1007/s00442-014-3031-6 pmid:25119160 fatcat:vfenzq2j4zffnku7ncykktuvcu
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