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Terrestrial laser scanning to detect liana impact on forest structure

(2018) REMOTE SENSING. 10(6).
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Abstract
Tropical forests are currently experiencing large-scale structural changes, including an increase in liana abundance and biomass. Higher liana abundance results in reduced tree growth and increased tree mortality, possibly playing an important role in the global carbon cycle. Despite the large amount of data currently available on lianas, there are not many quantitative studies on the influence of lianas on the vertical structure of the forest. We study the potential of terrestrial laser scanning (TLS) in detecting and quantifying changes in forest structure after liana cutting using a small scale removal experiment in two plots (removal plot and non-manipulated control plot) in a secondary forest in Panama. We assess the structural changes by comparing the vertical plant profiles and Canopy Height Models (CHMs) between pre-cut and post-cut scans in the removal plot. We show that TLS is able to detect the local structural changes in all the vertical strata of the plot caused by liana removal. Our study demonstrates the reproducibility of the TLS derived metrics for the same location confirming the applicability of TLS for continuous monitoring of liana removal plots to study the long-term impacts of lianas on forest structure. We therefore recommend to use TLS when implementing new large scale liana removal experiments, as the impact of lianas on forest structure will determine the aboveground competition for light between trees and lianas, which has important implications for the global carbon cycle.
Keywords
lianas, TLS, long-term monitoring, tropical forests, aboveground competition, global carbon cycle, WAVE-FORM LIDAR, TROPICAL FORESTS, GAP FRACTION, BIOMASS, CANOPY, ENVIRONMENTS, DIVERSITY, ABUNDANCE, PROFILES, SYSTEMS

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Citation

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Chicago
Krishna Moorthy Parvathi, Sruthi, Kim Calders, Manfredo di Porcia e Brugnera, Stefan Schnitzer, and Hans Verbeeck. 2018. “Terrestrial Laser Scanning to Detect Liana Impact on Forest Structure.” Remote Sensing 10 (6).
APA
Krishna Moorthy Parvathi, S., Calders, K., di Porcia e Brugnera, M., Schnitzer, S., & Verbeeck, H. (2018). Terrestrial laser scanning to detect liana impact on forest structure. REMOTE SENSING, 10(6).
Vancouver
1.
Krishna Moorthy Parvathi S, Calders K, di Porcia e Brugnera M, Schnitzer S, Verbeeck H. Terrestrial laser scanning to detect liana impact on forest structure. REMOTE SENSING. 2018;10(6).
MLA
Krishna Moorthy Parvathi, Sruthi, Kim Calders, Manfredo di Porcia e Brugnera, et al. “Terrestrial Laser Scanning to Detect Liana Impact on Forest Structure.” REMOTE SENSING 10.6 (2018): n. pag. Print.
@article{8563063,
  abstract     = {Tropical forests are currently experiencing large-scale structural changes, including an increase in liana abundance and biomass. Higher liana abundance results in reduced tree growth and increased tree mortality, possibly playing an important role in the global carbon cycle. Despite the large amount of data currently available on lianas, there are not many quantitative studies on the influence of lianas on the vertical structure of the forest. We study the potential of terrestrial laser scanning (TLS) in detecting and quantifying changes in forest structure after liana cutting using a small scale removal experiment in two plots (removal plot and non-manipulated control plot) in a secondary forest in Panama. We assess the structural changes by comparing the vertical plant profiles and Canopy Height Models (CHMs) between pre-cut and post-cut scans in the removal plot. We show that TLS is able to detect the local structural changes in all the vertical strata of the plot caused by liana removal. Our study demonstrates the reproducibility of the TLS derived metrics for the same location confirming the applicability of TLS for continuous monitoring of liana removal plots to study the long-term impacts of lianas on forest structure. We therefore recommend to use TLS when implementing new large scale liana removal experiments, as the impact of lianas on forest structure will determine the aboveground competition for light between trees and lianas, which has important implications for the global carbon cycle.},
  articleno    = {810},
  author       = {Krishna Moorthy Parvathi, Sruthi and Calders, Kim and di Porcia e Brugnera, Manfredo and Schnitzer, Stefan and Verbeeck, Hans},
  issn         = {2072-4292},
  journal      = {REMOTE SENSING},
  language     = {eng},
  number       = {6},
  pages        = {19},
  title        = {Terrestrial laser scanning to detect liana impact on forest structure},
  url          = {http://dx.doi.org/10.3390/rs10060810},
  volume       = {10},
  year         = {2018},
}

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