Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Shawn Fraver"'
Publikováno v:
Canadian Journal of Remote Sensing, Vol 45, Iss 1, Pp 88-112 (2019)
The authors developed a series of ecological metrics (EM) based on mechanistic principles for quantifying light detection and ranging (LiDAR) to develop forest inventories. These fall into 5 categories: canopy height, canopy complexity, individual tr
Externí odkaz:
https://doaj.org/article/ca679212d3ee477a83dd52d26fc37f46
Autor:
Shawn Fraver, Mark J. Ducey, Christopher W. Woodall, Anthony W. D’Amato, Amy M. Milo, Brian J. Palik
Publikováno v:
Forest Ecosystems, Vol 5, Iss 1, Pp 1-10 (2018)
Abstract Background Accurate downed woody debris (DWD) volume or mass estimates are needed for numerous applications such as fuel loading, forest carbon, and biodiversity/habitat assessments. The line-intersect sampling (LIS) method of inventorying D
Externí odkaz:
https://doaj.org/article/10041f649ec64dbc8390ee6383891dd2
Autor:
Andreas Sommerfeld, Cornelius Senf, Brian Buma, Anthony W. D’Amato, Tiphaine Després, Ignacio Díaz-Hormazábal, Shawn Fraver, Lee E. Frelich, Álvaro G. Gutiérrez, Sarah J. Hart, Brian J. Harvey, Hong S. He, Tomáš Hlásny, Andrés Holz, Thomas Kitzberger, Dominik Kulakowski, David Lindenmayer, Akira S. Mori, Jörg Müller, Juan Paritsis, George L. W. Perry, Scott L. Stephens, Miroslav Svoboda, Monica G. Turner, Thomas T. Veblen, Rupert Seidl
Publikováno v:
Nature Communications, Vol 9, Iss 1, Pp 1-9 (2018)
Climate change may impact forest disturbances, though local variability is high. Here, Sommerfeld et al. show that disturbance patterns across the temperate biome vary with agents and tree traits, yet large disturbances are consistently linked to war
Externí odkaz:
https://doaj.org/article/3a430824b3694bb49a91982a9cc7fadc
Autor:
Elias Ayrey, Daniel J. Hayes, John B. Kilbride, Shawn Fraver, John A. Kershaw, Bruce D. Cook, Aaron R. Weiskittel
Publikováno v:
Remote Sensing, Vol 13, Iss 24, p 5113 (2021)
Light detection and ranging (LiDAR) has become a commonly-used tool for generating remotely-sensed forest inventories. However, LiDAR-derived forest inventories have remained uncommon at a regional scale due to varying parameters among LiDAR data acq
Externí odkaz:
https://doaj.org/article/29c720b9d56141bdb4218bf449cf6518
Autor:
Elias Ayrey, Shawn Fraver, John A. Kershaw, Laura S. Kenefic, Daniel Hayes, Aaron R. Weiskittel, Brian E. Roth
Publikováno v:
Canadian Journal of Remote Sensing, Vol 43, Iss 1, Pp 16-27 (2017)
As light detection and ranging (LiDAR) technology advances, it has become common for datasets to be acquired at a point density high enough to capture structural information from individual trees. To process these data, an automatic method of isolati
Externí odkaz:
https://doaj.org/article/8ab21ea8fa164c6f8d1813d627ffd9bb
Publikováno v:
Forests, Vol 11, Iss 3, p 347 (2020)
Eastern white pine (Pinus strobus) is considered a signature species in eastern North America, particularly in New England. In recent years, however, white pine has experienced increased damage due to native pathogens that reduce the species’ growt
Externí odkaz:
https://doaj.org/article/cee4383be70f49c38f84b052e63d43ee
Autor:
Kelly E. Gleason, John B. Bradford, Alessandra Bottero, Anthony W. D'Amato, Shawn Fraver, Brian J. Palik, Michael A. Battaglia, Louis Iverson, Laura Kenefic, Christel C. Kern
Publikováno v:
Ecosphere, Vol 8, Iss 7, Pp n/a-n/a (2017)
Abstract Forests around the world are experiencing increasingly severe droughts and elevated competitive intensity due to increased tree density. However, the influence of interactions between drought and competition on forest growth remains poorly u
Externí odkaz:
https://doaj.org/article/8702eb2033714cef8447e4a4ea8d17a4
Autor:
Nathan Wesely, Shawn Fraver, Laura S. Kenefic, Aaron R. Weiskittel, Jean-Claude Ruel, Michael E. Thompson, Alan S. White
Publikováno v:
Forests, Vol 9, Iss 7, p 376 (2018)
Forestry practitioners often need to identify old-growth stands because of their high conservation value. To identify the structural and compositional characteristics potentially unique to old-growth northern white-cedar (Thuja occidentalis L.) stand
Externí odkaz:
https://doaj.org/article/a82756d07fab4d629c781e3278c1e515
Publikováno v:
Environmental Research Letters, Vol 13, Iss 10, p 105004 (2018)
The world’s forests sequester and store vast amounts of atmospheric carbon, playing a crucial role in climate change mitigation. Internal stem decay in living trees results in the release of stored carbon back into the atmosphere, constituting an i
Externí odkaz:
https://doaj.org/article/9f2913a4a9e642eb9073bdd024672dfa
Publikováno v:
Canadian Journal of Forest Research. 53:210-216
Multi-year drought and climate change can impact tree growth, especially in California's Mediterranean climate where growing season rainfall is limited or absent. Active forest restoration has the potential to mitigate climate impacts by reducing sta