Results 111 to 120 of about 315,914 (362)

Hyperspectral species maps and LiDAR‐based structured population models show future forest fire frequency may compromise forest resilience

Remote Sensing in Ecology and Conservation, EarlyView.
Monitoring forest recovery from disturbances at scale requires tracking tree dynamics, yet traditional ground‐based approaches are resource‐intensive. We present a pipeline to parameterize integral projection models (IPMs) using LiDAR data and hyperspectral‐based species maps to assess post‐fire recovery across large, forested areas at the Caribou ...
Jessica McLean, Tommaso Jucker, Alice Rosen, Sean M. McMahon, Roberto Salguero‐Gómez   +4 more
wiley   +1 more source

Large‐scale characterization of horizontal forest structure from remote sensing optical images

Remote Sensing in Ecology and Conservation, EarlyView.
Sub‐meter resolution remote sensing data and tree crown segmentation techniques hold promise in offering detailed information that can support the characterization of forest structure from a horizontal perspective, offering new insights in the tree crown structure at scale.
Xin Xu, Martin Brandt, Xiaowei Tong, Maurice Mugabowindekwe, Yuemin Yue, Sizhuo Li, Qiue Xu, Siyu Liu, Florian Reiner, Kelin Wang, Zhengchao Chen, Yongqing Bai, Rasmus Fensholt   +12 more
wiley   +1 more source

Spruce Budworm and Other Lepidopterous Prey of Eumenid Wasps (Hymenoptera: Eumenidae) in Spruce-Fir Forests of Maine [PDF]

, 2017
Three species of eumenid wasps, Ancistrocerus adiabatus, Ancistrocerus antilope, and Euodynerus Ieucomelas, accepted and provisioned trap-nesting blocks with lepidopterous larvae, A pyralid. Nephopteryx sp., was the most commonly provisioned prey.
Collins, Judith A, Jennings, Daniel T
core   +3 more sources

Classification of tree species and standing dead trees in Boreal forests using UAV‐based RGB, multispectral, and LiDAR point clouds

Remote Sensing in Ecology and Conservation, EarlyView.
We evaluated single‐ and multi‐sensor UAV approaches for classifying tree species and standing dead trees in boreal forests, focusing on key biodiversity indicators such as European aspen. Using spectral and structural features extracted from RGB, multispectral (MSP), and LiDAR point clouds for 1,205 field‐measured trees, we compared classification ...
Anton Kuzmin, Lauri Korhonen, Topi Tanhuanpää, Mikko Kukkonen, Matti Maltamo, Timo Kumpula   +5 more
wiley   +1 more source

Two "Fires" of Leadership: Is it Possible to Listen and Lead Parish Cultural Change?

Journal of Moral Theology
Pope Francis has claimed that “we are living through a change of epoch, the deepest level of which is cultural.” “A change of epoch” entails much change in Catholic parishes especially across the Western world. Change can be chosen or unchosen.
Hannah Vaughan-Spruce
doaj   +1 more source

Recurrent C. difficile in a Patient with IgG Deficiency

Case Reports in Gastrointestinal Medicine, 2015
IgG deficiency can predispose to recurrent pyogenic infections. The association of IgG deficiency with Clostridium difficile infection has been infrequently reported in the literature.
Asad Jehangir, Kyle Bennett, Shoaib Bilal Fareedy, Andrew Rettew, Bilal Shaikh, Anam Qureshi, Qasim Jehangir, Richard Alweis   +7 more
doaj   +1 more source

Video-Based Mapping of Oyster Bottom in the Upper Piscataqua River, Sturgeon Creek, and Spruce Creek [PDF]

, 2009
Towed, underwater videography was used to map and characterize the extent of oyster bottom in the upper Piscataqua River, Sturgeon Creek, and Spruce Creek.
Grizzle, Raymond E., Ward, Krystin M.
core   +1 more source

Spatial relationships between polymers in Sitka spruce: proton spin-diffusion studies [PDF]

, 2006
The spatial arrangement of polymers in Sitka spruce (Picea sitchensis) was investigated by NMR proton spin-diffusion studies, supplemented by deuterium-exchange experiments monitored by FTIR spectroscopy.
Bardet, Ha, Hafren, Kim, Liitia, Newman, Newman   +6 more
core   +1 more source

Negative Feedbacks on Bark Beetle Outbreaks: Widespread and Severe Spruce Beetle Infestation Restricts Subsequent Infestation

PLoS ONE, 2015
Understanding disturbance interactions and their ecological consequences remains a major challenge for research on the response of forests to a changing climate.
S. J. Hart, T. Veblen, Nathan P. Mietkiewicz, D. Kulakowski   +3 more
semanticscholar   +1 more source

Monitoring of historical structural materials with computed tomography

Structural Concrete, EarlyView.
Abstract Computed tomography (CT) is an excellent tool to solve certain engineering problems connected to material science (such as sulfate swelling, internal degradation due to freezing, and alkali silicate swelling) and to understand specific processes (frost peeling, acid action).
Kristóf Csorba, Kristóf Kapitány, Zsolt Cimer, Viktor Hlavička, András Biró, Éva Lublóy   +5 more
wiley   +1 more source