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- Although it is well-established that macroinvertebrates are an integral part of a healthy stream ecosystem, studies designed to inform forest harvest best management practices for sustainability of macroinvertebrate communities in small streams have been limited. Current riparian management practices for headwater streams generally focus on providing adequate wood supply, reducing debris flows and transport of sediment, and maintaining water quality in larger streams that contain fish. Here we studied the effects of contemporary forest harvest practices on benthic macroinvertebrate density...AuthorsSherri Johnson, Judith L. Li, Janel B. Sobota, Linda R. Ashkenas, Amanda M. Pollock, Mark Meleason, Lisa GanioKeywordsSourceForest Ecology and Management. 508(4): 119999.Year2022
- Mammals, including humans, have evolved in concert with the world of microbes. From birth to childhood and throughout adult life, the human immune system is shaped by exposure to microbes. Global loss of biodiversity is a pressing ecological concern, and scientists have begun to study whether reduced contact with the natural world adversely affects the human microbiota and its role in regulating our immune systems. Most studies that explore the relationship between exposure to nature and improved public health outcomes have focused on the intensity rather than the diversity of exposure....AuthorsSylvia Kantor, Geoffrey Donovan, Demetrios Gatziolis, Jeroen DouwesKeywordsSourceScience Findings 249. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 6 p.Year2022
- Comparative studies of mortality in the wild are necessary to understand the evolution of aging; yet, ectothermic tetrapods are underrepresented in this comparative landscape, despite their suitability for testing evolutionary hypotheses. We present a study of aging rates and longevity across wild tetrapod ectotherms, using data from 107 populations (77 species) of nonavian reptiles and amphibians. We test hypotheses of how thermoregulatory mode, environmental temperature, protective phenotypes, and pace of life history contribute to demographic aging. Controlling for phylogeny and body...AuthorsBeth A. Reinke, Hugo Cayuela, Fredric J. Janzen, Jean-François Lemaître, Jean-Michel Gaillard, A. Michelle Lawing, John B. Iverson, Ditte G. Christiansen, Iñigo Martínez-Solano, Gregorio Sánchez-Montes, Jorge Gutiérrez-Rodríguez, Francis L. Rose, Nicola Nelson, Susan Keall, Alain J. Crivelli, Theodoros Nazirides, Annegret Grimm-Seyfarth, Klaus Henle, Emiliano Mori, Gaëtan Guiller, Rebecca Homan, Anthony Olivier, Erin Muths, Blake R. Hossack, Xavier Bonnet, David S. Pilliod, Marieke Lettink, Tony Whitaker, Benedikt R. Schmidt, Michael G. Gardner, Marc Cheylan, Françoise Poitevin, Ana Golubović, Ljiljana Tomović, Dragan Arsovski, Richard A. Griffiths, Jan W. Arntzen, Jean-Pierre Baron, Jean-François Le Galliard, Thomas Tully, Luca Luiselli, Massimo Capula, Lorenzo Rugiero, Rebecca McCaffery, Lisa A. Eby, Venetia Briggs-Gonzalez, Frank Mazzotti, David Pearson, Brad A. Lambert, David M. Green, Nathalie Jreidini, Claudio Angelini, Graham Pyke, Jean-Marc Thirion, Pierre Joly, Jean-Paul Léna, Anton D. Tucker, Col Limpus, Pauline Priol, Aurélien Besnard, Pauline Bernard, Kristin Stanford, Richard King, Justin Garwood, Jaime Bosch, Franco L. Souza, Jaime Bertoluci, Shirley Famelli, Kurt Grossenbacher, Omar Lenzi, Kathleen R. Matthews, Sylvain Boitaud, Deanna H. Olson, Tim S. Jessop, Graeme R. Gillespie, Jean Clobert, Murielle Richard, Andrés Valenzuela-Sánchez, Gary M. Fellers, Patrick M. Kleeman, Brian J. Halstead, Evan H. Campbell Grant, Phillip G. Byrne, Thierry Frétey, Bernard Le Garff, Pauline Levionnois, John C. Maerz, Julian Pichenot, Kurtuluş Olgun, Nazan Üzüm, Aziz Avcı, Claude Miaud, Johan Elmberg, Gregory P. Brown, Richard Shine, Nathan F. Bendik, Lisa O’Donnell, Courtney L. Davis, Michael J. Lannoo, Rochelle M. Stiles, Robert Cox, Aaron M. Reedy, Daniel A. Warner, Eric Bonnaire, Kristine Grayson, Roberto Ramos-Targarona, Eyup Baskale, David Muñoz, John Measey, F. Andre de Villiers, Will Selman, Victor Ronget, Anne M. Bronikowski, David A. W. MillerKeywordsSourceScience. 376(6600): 1459-1466.Year2022
- Wildfires devastated communities in Oregon and Washington in September 2020, burning almost as much forest west of the Cascade Mountain crest (“the westside”) in 2 weeks (~340,000 ha) as in the previous five decades (~406,00 ha). Unlike dry forests of the interior western United States, temperate rain forests of the Pacific Northwest have experienced limited recent fire activity, and debates surrounding what drove the 2020 fires, and management strategies to adapt to similar future events, necessitate a scientific evaluation of the fires. We evaluate five questions regarding the 2020 Labor...AuthorsMatthew Reilly, Aaron Zuspan, Joshua S. Halofsky, Crystal Raymond, Andrew McEvoy, Alex W. Dye, Daniel C. Donato, John B. Kim, Brian Potter, Nathan Walker, Raymond J. Davis, Christopher J. Dunn, David M. Bell, Matthew J. Gregory, James D. Johnston, Brian J. Harvey, Jessica Halofsky, Becky K. KernsKeywordsSourceEcosphere. 13(6): 6383-6403.Year2022
- Sustainable management of protected areas requires attention to the structures, processes, institutions, and funding mechanisms that support them. When protected areas transcend multiple jurisdictions and landownerships, effective governance requires engagement of multiple institutions. In the United States, 11 National Scenic Trails (NSTs) extend across multiple states, landownerships, and jurisdictions, with regional and national partnerships enhancing management capacity. Trail governance requires a systems approach – coordinating among governmental and nongovernmental partners at...AuthorsLee K. Cerveny, Monika Derrien, Caleb Meyer, Anna B. MillerKeywordsSourceJournal of Outdoor Recreation and Tourism. 39(2): 100518.Year2022
- In recent decades, digital communications have assumed an influential role in public discourse, including online forums where contributors write about their recreation and tourism experiences. Systematic study of the language practices used on these forums offers a tool to access and assess the complex social and cultural systems in which recreation takes place, deepening our understanding of how people construct meaning of outdoor experiences and how these meanings function collectively in society. In this article, we use thematic and discursive approaches to study how people represent...AuthorsMelanie Armstrong, Monika Derrien, Hannah Schaefer-TibbettSourceJournal of Outdoor Recreation and Tourism. 38(3): 100456.Year2022
- Dissolved organic carbon (DOC) and nitrogen (DON) are important energy and nutrient sources for aquatic ecosystems. In many northern temperate, freshwater systems DOC has increased in the past 50 years. Less is known about how changes in DOC may vary across latitudes, and whether changes in DON track those of DOC. Here, we present long-term DOC and DON data from 74 streams distributed across seven sites in biomes ranging from the tropics to northern boreal forests with varying histories of atmospheric acid deposition. For each stream, we examined the temporal trends of DOC and DON concentra...AuthorsBianca M. Rodríguez‐Cardona, Adam S. Wymore, Alba Argerich, Rebecca T. Barnes, Susana Bernal, E. N. Jack Brookshire, Ashley A. Coble, Walter K. Dodds, Hannah M. Fazekas, Ashley M. Helton, Penny J. Johnes, Sherri Johnson, Jeremy Jones, Sujay S. Kaushal, Pirkko Kortelainen, Carla López‐Lloreda, Robert G. M. Spencer, William H. McDowellKeywordsSourceGlobal Change Biology. 28(1): 98-114.Year2022
- Age- and sex-specific survival estimates are crucial to understanding important life history characteristics, and variation in these estimates can be a key driver of population dynamics. When estimating survival using Cormack–Jolly–Seber (CJS) models, emigration is typically unknown but confounded with apparent survival. Consequently, especially for populations or age classes with high dispersal rates, apparent survival estimates are often biased low and temporal patterns in survival might be masked when site fidelity varies temporally. We used 9 years of annual mark–recapture data to...AuthorsMatthew J. Weldy, Damon B. Lesmeister, Clinton W. EppsKeywordsSourceEcology and Evolution. 12(4): 199-217.Year2022
- Catchment hydrologists have long puzzled over the question: How can catchments rapidly generate storm flows and pulses of solutes in response to storm events? Conceptual models viewing catchments as composed of discrete source areas generating flow at unique time scales and with unique chemical characteristics have been used to explain the observed changes in flow and water chemistry. Surprisingly, those conceptual models usually do not treat the stream channel as one of the potential source areas. Here, we propose the channel-source hypothesis in which the stream itself should be considere...AuthorsSteve Wondzell, Adam S. WardKeywordsSourceHydrological Processes. 36(5): 281-293.Year2022
Condors in space: an individual-based population model for California condor reintroduction planning
Context Existing demographic models of California condors have not simultaneously considered individual condor movement paths, the distribution and juxtaposition of release sites, habitat components, or the spatial distribution of threats.Objectives Our objectives were to develop a dynamic spatially explicit and individual-based model (IBM) of California condor demography and to evaluate its ability to replicate empirical data on demography and distribution from California (1995–2019).Methods We built a female-only spatially explicit California condor IBM in HexSim, using a daily timestep...AuthorsJesse D’Elia, Nathan H. Schumaker, Bruce G. Marcot, Thomas Miewald, Sydney Watkins, Alan D. YanahanKeywordsSourceLandscape Ecology. 37(5): 1431-1452.Year2022