Article
Ecology
Christine R. Rollinson, M. Ross Alexander, Alex W. Dye, David J. P. Moore, Neil Pederson, Valerie Trouet
Summary: The study analyzed growth information from 1,084 trees across eight sites in the northeastern United States, finding significant and nonlinear differences in climate sensitivity for four common tree species based on canopy position. Understory trees showed stronger reductions in growth at high temperatures and varied shifts in precipitation response compared to overstory trees, contradicting previous assumptions.
Article
Forestry
Jean-Baptiste Ndamiyehe Ncutirakiza, Sylvie Gourlet-Fleury, Philippe Lejeune, Xavier Bry, Catherine Trottier, Frederic Mortier, Adeline Fayolle, Francois Muhashy Habiyaremye, Leopold Ndjele Mianda-Bungi, Gauthier Ligot
Summary: This study examines the influence of canopy structure on tropical tree growth using data collected through unmanned aerial vehicles (UAVs) and field measurements. The results show that combining UAV and field data can improve the prediction of tree diameter increment. Diameter at breast height and crown area are complementary predictors, and crown-based competition indices significantly enhance prediction models. The calibrated model at one site can accurately predict growth at another site.
FOREST ECOLOGY AND MANAGEMENT
(2024)
Article
Forestry
Katherine R. Urban-Mead, Paige Muniz, Jessica Gillung, Anna Espinoza, Rachel Fordyce, Maria van Dyke, Scott H. McArt, Bryan N. Danforth
Summary: Temperate hardwood deciduous forest in the Northeastern US is the dominant landcover, with vertically stratified bee communities showing equal species richness but higher diversity in the canopy compared to the understory. Female bees, including solitary, social, soil and wood-nesting bees, are abundant in the canopy, while soil-nesting and solitary bees dominate the understory. Conservation efforts focusing on preserving above-ground deadwood in forests may provide nesting sites for wood-nesting bees.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Environmental Sciences
Chunling Wang, Jianbang Wang, Zhuoyu He, Min Feng
Summary: Forest dynamics are crucial for forested ecosystems. This study developed a 30-m resolution dataset to monitor tree-canopy cover and forest change in the Eastern Himalayas. The results showed that the forests have improved in the region, with less forest loss compared to forest gain, and faster forest growth at higher elevations.
Article
Biodiversity Conservation
Lucas B. Harris, Christopher W. Woodall, Anthony W. D. 'Amato
Summary: Tree regeneration surveys provide important insights into forest changes and stand development trajectories. Observations of seedling abundance changes across size classes are crucial for accurately predicting recruitment from seedling to advanced size classes. Collecting relatively coarse seedling height data improves the predictive models.
ECOLOGICAL INDICATORS
(2022)
Article
Forestry
Zhaofei Wu, Chunyu Fan, Chunyu Zhang, Xiuhai Zhao, Klaus von Gadow
Summary: This study investigated the growth factors of three dominant tree species in natural forests in northeastern China, finding that diameter, temperature, and precipitation are important factors affecting basal area increment. The results provide a basis for future scientific management of natural forest regions.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Article
Forestry
Inger Elisabeth Maren, Lila Nath Sharma
Summary: Forests play a crucial role in achieving the UN's Agenda 2030, with efforts to stop deforestation being a priority on the international sustainability agenda. This study in the central Himalayas found that protected forests have higher aboveground tree carbon, with a stronger correlation to structural diversity than biodiversity.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Environmental Sciences
Neal C. Swayze, Wade T. Tinkham, Jody C. Vogeler, Andrew T. Hudak
Summary: This study investigated the use of unmanned aerial system (UAS) imagery for modeling individual tree and stand-level metrics in dry conifer forests. It found that tree extraction accuracy was maximized for nadir crosshatch UAS flight designs, while extracted tree height accuracy was high for all UAS flight parameters. Additionally, stand density estimates were most accurate with off-nadir or crosshatch flight designs at lower altitudes.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Forestry
Pekka Kaitaniemi, Anna Lintunen
Summary: This study explored a simple tree height- and distance-based competition index to predict structural tree attributes in three boreal tree species growing in low to moderate densities within mixed stands. The results suggest that quantifying competitive interactions based on individual tree heights and locations has the potential to improve the prediction of tree attributes, although outcomes may vary by species.
Article
Biodiversity Conservation
C. W. Woodall, G. C. Liknes, J. P. Bunker, C. P. Peace, J. M. Frank
Summary: The widespread deforestation and subsequent reforestation in the eastern U.S. resulted in the establishment of introduced apple trees exclusive of native crab apple species. A forest inventory revealed that there are hundreds of millions of apple trees in the northern U.S., with signs of population decline in young trees and an increase in older and dead trees. The distribution of forest apple trees aligns with native crab apples only in limited areas, suggesting the existence of feral apple populations derived from abandoned agricultural land.
BIODIVERSITY AND CONSERVATION
(2023)
Article
Forestry
Houjuan Song, Duoduo Zhou, Song Chen, Jing Li, Chenlin Wang, Yuchen Ren, Xiuqing Yang
Summary: This study investigated tree mortality in forests with different climates and found that tree size was the most important factor affecting tree mortality. The interactions between neighbors and abiotic factors such as convexity and soil nutrients also had significant effects. These findings have important implications for forest dynamics and management.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Plant Sciences
Jordon C. Tourville, Jay W. Wason, Martin Dovciak
Summary: This study examines the role of forest canopy gaps in driving tree species range shifts in response to climate change. The results show that high-elevation conifer forests with canopy gaps facilitate the upslope shift of conifer seedlings, while gaps at lower elevations have limited impact on seedling recruitment or the downslope shift of deciduous species. Climate and soil are important predictors of seedling distributions, while climate alone is the dominant predictor of adult tree distributions.
JOURNAL OF ECOLOGY
(2022)
Article
Plant Sciences
Tamara Ribeiro Botelho de Carvalho Maria, Daniela Biondi, Alexandre Behling, Nilton Jose de Sousa
Summary: This study evaluated the individuals of Terminalia catappa trees in the street trees of Itanhae'm, Brazil, finding that on average the trees are 7.5 meters tall and the most common pruning methods were reduction and lifting. The main structural defects observed were dry branches in the crown, cracks in the soil caused by roots, and bacterial galls on the trunk.
URBAN FORESTRY & URBAN GREENING
(2021)
Article
Biodiversity Conservation
Daniel Zuleta, Gabriel Arellano, Sean M. McMahon, Salomon Aguilar, Sarayudh Bunyavejchewin, Nicolas Castano, Chia-Hao Chang-Yang, Alvaro Duque, David Mitre, Musalmah Nasardin, Rolando Perez, I-Fang Sun, Tze Leong Yao, Renato Valencia, Sruthi M. Krishna Moorthy, Hans Verbeeck, Stuart J. Davies
Summary: Accurate estimates of forest biomass stocks and fluxes are crucial for understanding global carbon budgets and forest response to climate change. This study reveals that damage to living trees contributes significantly to aboveground biomass (AGB) loss in tropical forests, accounting for 42% of the total AGB loss. Conventional forest inventories tend to overestimate AGB stocks, underestimate damage-related AGB losses, and overestimate AGB loss via mortality, leading to an underestimation of forest carbon fluxes.
GLOBAL CHANGE BIOLOGY
(2023)
Article
Plant Sciences
Anne Bienert, Louis Georgi, Matthias Kunz, Goddert von Oheimb, Hans-Gerd Maas
Summary: Mobile laser scanning (MLS) is a valuable technique for automated tree segmentation and parameter determination in forest research. The detection rate of trees in MLS data strongly depends on the distance to the travelled track, with trees being almost completely segmented up to a distance of about 30 m from the trajectory. The accuracy of tree parameters derived from MLS-segmented trees is similar to those from TLS-segmented trees.
Article
Ecology
David M. Forsyth, Deborah J. Wilson, Tomas A. Easdale, Georges Kunstler, Charles D. Canham, Wendy A. Ruscoe, Elaine F. Wright, Lora Murphy, Andrew M. Gormley, Aurora Gaxiola, David A. Coomes
ECOLOGICAL MONOGRAPHS
(2015)
Article
Ecology
Christine R. Rollinson, Margot W. Kaye, Charles D. Canham
Article
Ecology
Gary M. Lovett, Marissa Weiss, Andrew M. Liebhold, Thomas P. Holmes, Brian Leung, Kathy Fallon Lambert, David A. Orwig, Faith T. Campbell, Jonathan Rosenthal, Deborah G. McCullough, Radka Wildova, Matthew P. Ayres, Charles D. Canham, David R. Foster, Shannon L. LaDeau, Troy Weldy
ECOLOGICAL APPLICATIONS
(2016)
Article
Plant Sciences
Arne Buechling, Patrick H. Martin, Charles D. Canham, Wayne D. Shepperd, Mike A. Battaglia
JOURNAL OF ECOLOGY
(2016)
Article
Plant Sciences
Jaclyn Schnurr, Charles D. Canham
JOURNAL OF VEGETATION SCIENCE
(2016)
Article
Ecology
Charles D. Canham, Lora Murphy
Article
Plant Sciences
Arne Buechling, Patrick H. Martin, Charles D. Canham
JOURNAL OF ECOLOGY
(2017)
Article
Ecology
Charles D. Canham, Lora Murphy
Article
Ecology
Richard S. Ostfeld, Taal Levi, Felicia Keesing, Kelly Oggenfuss, Charles D. Canham
Article
Forestry
K. David Coates, Erin C. Hall, Charles D. Canham
Article
Ecology
Charles D. Canham, Lora Murphy, Rachel Riemann, Richard McCullough, Elizabeth Burrili
Article
Ecology
Patrick H. Martin, Charles D. Canham
Article
Ecology
Seth Bigelow, Charles Canham
Article
Ecology
Jonathan R. Thompson, Charles D. Canham, Luca Morreale, David B. Kittredge, Brett Butler
ECOLOGICAL APPLICATIONS
(2017)