Treesearch
Displaying 1 - 10 of 63,368 PublicationsSpecies nativeness as a cultural paradigm in conservation
Formally Refereed
Conservation entails cultural practices shaped by our worldviews, values, beliefs, and priorities for our interactions with nature. These inform how we categorize which species we want to occur in which landscapes. In Western conservation organizations, conceptualizations of species ‘belonging’ typically align with a dichotomy of native versus introduced species. This is a cultural paradigm, informed by biological considerations, and it is not uniformly shared across different cultures, resulting in varied conceptualizations of species belonging. These conceptualizations may continue to evolve...AuthorsLily M. van Eeden, Jeff Vance Martin, Jonathan Fisk, Lisa Lehnen, Erle C. Ellis, Michael C. Gavin, Adam C. Landon, Lincoln R. Larson, Kirsten M. Leong, Wayne Linklater, Christopher K. Williams, Richard E.W. BerlKeywordsSourceBiological Conservation. 311: 111415.Year2025- Policy makers and planners aim to overcome the “tyranny of small decisions” to address the triple planetary threats of climate change, biodiversity loss, and pollution. However, top-down policies intended to prevent the accumulation of small decisions from undermining collective goods and public infrastructure have removed agency from individuals and caused unintended negative impacts on society. Urban areas are a critical context to examine the role of small decisions because of the extreme diversity and density of decisions and decision-makers within them, their increasing growth worldwide, ...AuthorsCorinne G. Bassett, Susan D. Day, Cecil C. Konijnendijk, Kai M.A. Chan, Lara A. RomanKeywordsSourceEnvironmental Science & Policy. 170: 104125.Year2025
- The mixed estimator (ME) for annual forest inventory proposed by van Deusen (1999; Can. J. For. Res. 29: 1824-1828) is reformulated as a linear mixed model. This equivalent structure admits an interpretation of the ME as a polynomial regression on year with correlated year-specific random effects. It also uncovers the necessary criterion for maximum likelihood (ML) estimation. The improved performance of the ME under ML estimation is illustrated through simulations and application to inventory data from Montana, USA. Limitations of the ME relating to model-misspecification are also discussed.AuthorsDavid L.R. Affleck, George C. III.GainesKeywordsSourceCanadian Journal of Forest Research. 55: 1-10.Year2025
Drone-based, multispectral photogrammetric point clouds to classify fire severity at differing canopy height strata
Formally Refereed
Background: Remote sensing techniques for assessing fire severity using two-dimensional imagery, such as satellite data, are limited to a single severity value per pixel, typically at a 30-m resolution. This often leads to an underestimation of understory fire severity, as live tree crowns can obscure the extent of the burned area beneath. By leveraging the three-dimensional capabilities of drone imagery, a more comprehensive assessment of fire severity across different canopy height strata can be achieved.Methods: We show how drone digital aerial photogrammetry (dDAP), also known as structure...AuthorsJonathan L. Batchelor, Andrew Hudak, Akira Kato, David R. Weise, L. Monika MoskalKeywordsSourceFire Ecology. 21: 39.Year2025- The hierarchical model-based (HMB) statistical method is currently applied in connection withNASA’s Global Ecosystem Dynamics Investigation (GEDI) mission for assessing forest aboveground biomass (AGB) in areas lacking a sufficiently large number of GEDI footprints for employing hybrid inference. This study focuses on variance estimation using a bootstrap procedure that separates the computations into parts, thus considerably reducing the computational time required and making bootstrapping a viable option in this context. The procedure we propose uses a theoretical decomposition of the HMB va...AuthorsSvetlana Saarela, Sean P. Healey, Zhiqiang Yang, Bjørn-Eirik Roald, Paul L. Patterson, Terje Gobakken, Erik Næsset, Zhengyang Hou, Ronald E. McRoberts, Göran StåhlKeywordsSourceEnvironmetrics. 36: e2883.Year2025
- Tree age information is crucial for a range of environmental, scientific, and conservation-related purposes. It helps in understanding and managing forest resources effectively and sustainably. This study presents an approach to estimate tree age across diverse U.S. forested ecosystems using field inventory and climate datasets. The age-size relationship modeling framework incorporates species-specific and environmental variables, enabling its application across various regions. Model R² values range from 0.51 to 0.87 and relative RMSEs (using the mean as the denominator) ranging from 0.14 to ...AuthorsJiaming Lu, Chengquan Huang, Karen Schleeweis, Zhenhua Zou, Weishu GongKeywordsSourceForest Ecology and Management 584: 122603.Year2025
- This indicator measures the area and percentage of protected forested land that could be used to fulfill social, cultural, and spiritual needs and values. Cultural connectedness to forests can be tangible or intangible. For example, hunting, chopping firewood, hiking, or other tangible acts embody forest-related cultural practices. On the other hand, simply the existence of forests—whether or not an individual has physically been there—can shape personal and community values (Halla et al. 2023). People can attribute meaning to natural phenomena of forests but can also be connected to forests v...AuthorsMichelle J. Thompson, Sonia R. Bruck, Stephanie J. Chizmar, Jesse D. Henderson, Gregory E. FreySourceFS-Indicator-6.43-2030.Washington, DC: US Department of Agriculture, Forest Service, Washington Office.Year2025
- This indicator evaluates the import and export value of nonwood forest products (NWFPs) in the United States. The United Nations has defined NWFPs as “forest products [that] consist of goods of biological origin other than wood, derived from forests, other wooded land and trees outside forests” (FAO 1999). NWFPs constitute a subset of nonconvertible products (i.e., products that are not convertible to units of measure relative to timber) grown in forests. The U.S. Department of Agriculture, Forest Service categorizes NWFPs in the following groups, consistent with the United Nations definition:...AuthorsMichelle J. Thompson, Stephanie J. Chizmar, Sonia R. Bruck, Jesse D. Henderson, Gregory E. FreySourceFS-Indicator-6.31-2030. Washington, DC: U.S. Department of Agriculture, Forest Service, Washington Office.Year2025
Pantropical tree rings show small effects of drought on stem growth
Formally Refereed
Increasing drought pressure under anthropogenic climate change may jeopardize the potential of tropical forests to capture carbon in woody biomass and act as a long-term carbon dioxide sink. To evaluate this risk, we assessed drought impacts in 483 tree-ring chronologies from across the tropics and found an overall modest stem growth decline (2.5% with a 95% confidence interval of 2.2 to 2.7%) during the 10% driest years since 1930. Stem growth declines exceeded 10% in 25% of cases and were larger at hotter and drier sites and for gymnosperms compared with angiosperms. Growth declines generall...AuthorsPieter A. Zuidema, Peter Groenendijk, Mizanur Rahman, Valerie Trouet, Abrham Abiyu, Rodolfo Acuña-Soto, Eduardo Adenesky-Filho, Raquel Alfaro-Sánchez, Claudio Roberto Anholetto, José Roberto Vieira Aragão, Gabriel Assis-Pereira, Claudia C. Astudillo-Sánchez, Ana Carolina Barbosa, Giovanna Battipaglia, Hans Beeckman, Paulo Cesar Botosso, Nils Bourland, Achim Bräuning, Roel Brienen, Matthew Brookhouse, Supaporn Buajan, Brendan M. Buckley, J. Julio Camarero, Artemio Carrillo-Parra, Gregório Ceccantini, Librado R. Centeno-Erguera, Julián Cerano-Paredes, Rosalinda Cervantes-Martínez, Wirong Chanthorn, Ya-Jun Chen, Bruno Barçante Ladvocat Cintra, Eladio Heriberto Cornejo-Oviedo, Otoniel Cortés-Cortés, Clayane Matos Costa, Camille Couralet, Doris Bianca Crispín-De-La-Cruz, Rosanne D’arrigo, Diego A. David, Maaike De Ridder, Jorge Ignacio Del Valle, Mário Dobner, Jean-Louis Doucet, Oliver Dünisch, Brian J. Enquist, Karin Esemann-Quadros, Gerardo Esquivel-Arriaga, Ze-Xin Fan, Adeline Fayolle, Tatiele Anete Bergamo Fenilli, M. Eugenia Ferrero, Esther Fichtler, Patrick M. Finnegan, Claudia Fontana, Kainana S. Francisco, Pei-Li Fu, Franklin Galvão, Aster Gebrekirstos, Jorge A. Giraldo, Emanuel Gloor, Milena Godoy-Veiga, Daniela Granato-Souza, Anthony Guerra, Kristof Haneca, Grant Logan Harley, Ingo Heinrich, Gerhard Helle, Bruna Hornink, Wannes Hubau, Janet G. Inga, Mahmuda Islam, Yu-Mei Jiang, Mark Kaib, Zakia Hassan Khamisi, Marcin Koprowski, Eva Layme, A. Joshua Leffler, Gauthier Ligot, Claudio Sergio Lisi, Neil J. Loader, Francisco De Almeida Lobo, Giuliano Maselli Locosselli, Tomaz Longhi-Santos, Lidio Lopez, María I López-Hernández, José Luís Penetra Cerveira Lousada, Rubén D. Manzanedo, Amanda K. Marcon, Justin T. Maxwell, Omar N. Mendoza-Villa, Ítallo Romany Nunes Menezes, Mulugeta Mokria, Valdinez Ribeiro Montóia, Eddy Moors, Miyer Moreno, Miguel Angel Muñiz-Castro, Cristina Nabais, Anuttara Nathalang, Justine Ngoma, Francisco De Carvalho Nogueira, Juliano Morales Oliveira, Gabriela Morais Olmedo, Daigard Ricardo Ortega-Rodriguez, Carmen Eugenia Rodríguez Ortíz, Mariana Alves Pagotto, Shankar Panthi, Kathelyn Paredes-Villanueva, Gonzalo Pérez-de-Lis, Laura Patricia Ponce Calderón, Leif Armando Portal-Cahuana, Darwin Alexander Pucha-Cofrep, Nathsuda Pumijumnong, Paulo Quadri, Jorge Andrés Ramírez, Edilson Jimmy Requena-Rojas, Judith Reyes-Flores, Adauto de Souza Ribeiro, Iain Robertson, Fidel Alejandro Roig, José Guilherme Roquette, Ernesto Alonso Rubio-Camacho, Raúl Sánchez-Salguero, Ute Sass-Klaassen, Jochen Schöngart, Marcelo Callegari Scipioni, Paul R. Sheppard, Lucas C.R. Silva, Franziska Slotta, Leroy Soria-Díaz, Luciana K.V.S. Sousa, James H. Speer, Matthew D. Therrell, Ginette Ticse-Otarola, Mario Tomazello-Filho, Max C.A. Torbenson, Pantana Tor-Ngern, Ramzi Touchan, Jan Van den Bulcke, Lorenzo Vázquez-Selem, Adín H. Velázquez-Pérez, Alejandro Venegas-González, Ricardo Villalba, Jose Villanueva-Diaz, Mart Vlam, George Vourlitis, Christian Wehenkel, Tommy Wils, Erika S. Zavaleta, Eshetu Asfaw Zewdu, Yong-Jiang Zhang, Zhe-Kun Zhou, Flurin BabstSourceScience. 389(6759): 532-538.Year2025- Rapid ‘ōhi‘a death (ROD), caused by Ceratocystis lukuohia and C. huliohia, severely impacts ‘ōhi‘a lehua (Metrosideros polymorpha), a keystone tree species on the Hawaiian Islands. This study examined the ability of these pathogens to colonize ‘ōhi‘a fine roots in a series of root dip experiments under in vitro conditions, focusing on the potential roles of host genetics and root tissue condition in susceptibility. The results showed that both pathogens can colonize and form fruiting bodies on fine roots; however, C. lukuohia had greater colonization rates and produced more perithecia than C. ...AuthorsDylan Hyun, Marc A. Hughes, Nels Johnson, R. Flint Hughes, Peter M. VitousekKeywordsSourcePhytoFrontiersYear2025