Article
Geosciences, Multidisciplinary
E. H. Peitzsch, E. Hood, J. R. Harley, D. K. Stahle, N. E. Kichas, G. J. Wolken
Summary: Snow avalanches are a natural hazard with severe impacts worldwide. By using dendrochronological techniques, this study analyzed the historical frequency of large magnitude avalanches in southeast Alaska and found significant predictors such as February and March precipitation and the Oceanic Nino Index. The results can be used to inform infrastructure planning and avalanche mitigation in urban areas.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2023)
Article
Geology
Leslie M. E. Manriquez, Ernesto L. Lavina, Renata Guimaraes Netto, Rodrigo Scalise Horodyski, Marcelo Leppe
Summary: Studies on the environmental dynamics of high energy beach systems involve analyzing sedimentary structures, flow directions, and fossil characteristics to reveal the evolution of the system and its associated parameters. The results demonstrate the complexity of the system influenced by multiple factors, showing varied characteristics.
SEDIMENTARY GEOLOGY
(2021)
Article
Forestry
Zachary Wenderott, Phillip J. van Mantgem, Micah C. Wright, Calvin A. Farris, Rosemary L. Sherriff
Summary: Prescribed fire treatments can reduce fire hazards, but their impact on large, old trees is an important consideration. This study analyzed the effects of prescribed fire treatments on forest structure and individual tree growth in mixed-conifer forests of Lassen Volcanic National Park using long-term plot records and dendrochronological samples.
FOREST ECOLOGY AND MANAGEMENT
(2022)
Article
Environmental Sciences
Erica R. Bigio, Thomas W. Swetnam, Christopher H. Baisan, Christopher H. Guiterman, Yegor K. Kisilyakhov, Sergey G. Andreev, Eduard A. Batotsyrenov, Alexander A. Ayurzhanaev
Summary: This study uses dendrochronology to analyze fire activity in Siberia over the past 400 years. It finds that the frequency of fires has varied, with agricultural burning and regional drought being major contributors. Although fire frequencies increased in the 20th century, the relationship between fires and climate weakened, suggesting that human-caused ignitions may override climate drivers.
ENVIRONMENTAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Richard Munoz, Carlos Lara, Johny Arteaga, Sebastian I. Vasquez, Gonzalo S. Saldias, Raul P. Flores, Junyu He, Bernardo R. Broitman, Bernard Cazelles
Summary: This study uses time-frequency analyses and wavelet coherence analysis to examine the spatial synchrony between chlorophyll a and turbid river plumes in the inner sea of Chiloe in Chile. The results show that the strength of synchrony varies between the northern and southern areas of the sea, and is likely influenced by large-scale climatic oscillations.
Article
Geography, Physical
Patricio I. Moreno, Javiera Videla, Maria Jose Kaffman, Carla A. Henriquez, Esteban A. Sagredo, Paola Jara-Arancio, Brent V. Alloway
Summary: Results from Lago Negro in northwestern Patagonia provide valuable insights into the vegetation dynamics and responses to climate change since approximately 12.7 ka. The study reveals distinct north-to-south gradients in temperature and precipitation, as well as east-to-west gradients in disturbance regimes in the region. These findings shed light on the complex interactions between rainforest vegetation and environmental gradients in the area since the late Pleistocene.
QUATERNARY SCIENCE REVIEWS
(2021)
Article
Environmental Sciences
Gonzalo S. Saldias, Wilber Hernandez, Carlos Lara, Richard Munoz, Cristian Rojas, Sebastian Vasquez, Ivan Perez-Santos, Luis Soto-Mardones
Summary: Surface oceanic fronts, particularly Sea Surface Temperature (SST) fronts, in the northern Patagonia region were analyzed for the period 2003-2019. The study found high probability of frontal occurrences off Chiloe Island, especially in summer and fall, with increased gradient magnitudes primarily in the spring and summer, suggesting the formation of coastal upwelling fronts. Additionally, the analysis revealed dominant variability modes in SST gradient magnitudes, with meridional coastal fronts dominating in summer and SST fronts inside the Inner Sea of Chiloe dominating in spring and early summer. Future research is recommended to focus on studying the vertical structure and variability of coastal fronts in the Inner Sea of Chiloe and its adjacent coastal ocean.
Article
Geosciences, Multidisciplinary
Raul P. Flores, Carlos Lara, Gonzalo S. Saldias, Sebastian I. Vasquez, Alonso Roco
Summary: This study characterizes the variability of turbid freshwater plumes in northern Patagonia using satellite data for the first time. The analysis shows that the plume variability is related to river discharge and large-scale climatic variability. The study also identifies a threshold value to determine plume occurrence and reveals different modes of plume variability. These findings contribute to a better understanding of hydrographic and ecological processes in the region.
JOURNAL OF MARINE SYSTEMS
(2022)
Article
Geography, Physical
P. E. Santamarina, V. D. Barreda, A. Iglesias, A. N. Varela, C. Mays
Summary: This paper assesses changes in fossil floras during the Cenomanian-Turonian interval through palynological studies in Patagonia, South America and Chatham Islands, New Zealand. The study reveals richness peaks and species displacement in both regions, but lacks correlation with marine-based events. It also proposes a new scheme for the mid-Cretaceous palynological provinces of Southern Gondwana.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Environmental Sciences
Thomas Kitzberger, Florencia Tiribelli, Ivan Barbera, Juan Haridas Gowda, Juan Manuel Morales, Laura Zalazar, Juan Paritsis
Summary: Warming trends are impacting fire regimes and ecosystems, with fire probabilities being more sensitive to current fire weather than other factors. The anticipated drier and warmer fire seasons in the region will significantly increase fire probabilities for the mid- and late 21st century. The vulnerability to shorter fire intervals in the late 21st century is higher in more productive ecosystems due to a lack of fire-adapted traits in dominant trees.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Luisa E. Delgado, Claudia C. Zuniga, Rodrigo A. Asun, Ricardo Castro-Diaz, Claudia E. Natenzon, Lorenna D. Paredes, Daniela Perez-Orellana, David Quinones, Hector H. Sepulveda, Pablo M. Rojas, Gonzalo R. Olivares, Victor H. Marin
Summary: The article discusses the ecological state and social-ecological impact of the Chiloe coastal zone, emphasizing the importance of sustainable governance. The study found that increased coastal fisheries and aquaculture have led to serious ecological problems and conflicts, with social validation highlighting differences in perceptions among stakeholders.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Forestry
Matthew Joseph Ruggirello, Gimena Bustamante, Paula Rodriguez, Veronica Cruz-Alonso, Rosina Soler
Summary: Increasing latitude is associated with greater post-fire tree regeneration, but species dominance shifts from conifers to short-lived deciduous trees, which may have negative impacts on flora, fauna, and ecosystem services dependent on coniferous forests.
ANNALS OF FOREST SCIENCE
(2023)
Article
Geography
L. E. Delgado, R. De Rios, M. Perevochtchikova, I. A. Marin, R. Fuster, V. H. Marin
Summary: Despite some institutional governance shortcomings, the majority of people in rural-connected areas of Chile get water through local rural drinking water committees, while most people in isolated areas obtain water from rivers without interacting with their neighbors. This highlights the importance of a multi-level contextual approach to rural water governance.
JOURNAL OF RURAL STUDIES
(2021)
Article
Ecology
Tess Moriarty, Tracy D. Ainsworth, William Leggat
Summary: The prevalence of coral disease has increased significantly under climate change, affecting coral community structure and functionality. The impacts and ecology of coral diseases in high-latitude reefs remain unclear. This study reports the first findings of coral diseases in Lord Howe Island Marine Park, the southernmost coral reef system. Four coral diseases were identified, with a prevalence of 5% and significant variations between time and site.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Environmental Sciences
C. Ahrendt, C. Galban-Malagon, V. Gomez, M. Torres, C. Mattar, M. DeCoite, Y. Guida, P. Pribylova, K. Pozo
Summary: The occurrence of plastics and associated persistent organic pollutants (POPs) in surface waters from Northern Chilean Patagonia is reported. A total of 200 particles were found during the survey, with 53% of the collected particles corresponding to plastic. Microplastics were the dominant size found in the area, followed by macroplastics and mesoplastics. Fragments were the most frequent shape of plastic debris, followed by Styrofoam and fiber. Higher PBDE levels were found in the central zone compared to DDT, PeCB, HCB, and PCB levels. This study is the first report on POP occurrence in marine plastic debris from Chiloe ' Sea in the Northern Chilean Patagonia.
MARINE POLLUTION BULLETIN
(2023)
Article
Multidisciplinary Sciences
Rose A. Graves, Ryan D. Haugo, Andres Holz, Max Nielsen-Pincus, Aaron Jones, Bryce Kellogg, Cathy Macdonald, Kenneth Popper, Michael Schindel
Article
Biodiversity Conservation
Brian Buma, Andres Holz, Ivan Diaz, Ricardo Rozzi
Summary: The study documented the world's southernmost trees on Isla Hornos, Chile, and found that their distribution and growth are strongly influenced by abiotic environment factors. Understanding the position and condition of tree limits is crucial for monitoring global change, and these tree boundaries serve as useful communication points in ecosystems. The unique forests on Isla Hornos are likely to continue to be shaped by shifts in wind intensity and direction due to larger-scale climate change.
Article
Forestry
Jan R. Bannister, Manuel Acevedo, German Travieso, Andres Holz, Nicole Galindo
Summary: This study evaluated the early performance of Nothofagus nitida seedlings planted beneath nurse canopy following the removal of the understory. The results showed that planted seedlings had good performance indicators and could tolerate low-light conditions. However, physiological stress increased in open areas with more available light, especially during the summer season, indicating the importance of planting in suitable microsite conditions.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Biodiversity Conservation
Dana M. Bergstrom, Barbara C. Wienecke, John van den Hoff, Lesley Hughes, David B. Lindenmayer, Tracy D. Ainsworth, Christopher M. Baker, Lucie Bland, David M. J. S. Bowman, Shaun T. Brooks, Josep G. Canadell, Andrew J. Constable, Katherine A. Dafforn, Michael H. Depledge, Catherine R. Dickson, Norman C. Duke, Kate J. Helmstedt, Andres Holz, Craig R. Johnson, Melodie A. McGeoch, Jessica Melbourne-Thomas, Rachel Morgain, Emily Nicholson, Suzanne M. Prober, Ben Raymond, Euan G. Ritchie, Sharon A. Robinson, Katinka X. Ruthrof, Samantha A. Setterfield, Carla M. Sgro, Jonathan S. Stark, Toby Travers, Rowan Trebilco, Delphi F. L. Ward, Glenda M. Wardle, Kristen J. Williams, Phillip J. Zylstra, Justine D. Shaw
Summary: This study examines the current state and recent trajectories of ecosystem collapse globally, highlighting the pressures from global climate change and human impacts as key drivers. The manifestation of widespread ecosystem collapse serves as a stark warning of the necessity for action to alleviate further degradation. A three-step assessment and management framework is proposed to aid in strategic and effective mitigation to secure our future.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Economics
Rose A. Graves, Max Nielsen-Pincus, Ryan D. Haugo, Andres Holz
Summary: Privately-owned forests in the Pacific Northwest play a large role in carbon sequestration, but little is known about the preferences of non-industrial private forest owners for carbon incentive programs. This research examines the willingness of landowners in western Oregon to participate in hypothetical forest carbon incentive programs and identifies the factors that influence their decision. The findings suggest that higher annual and cost-share payments are strong predictors of landowner participation.
FOREST POLICY AND ECONOMICS
(2022)
Article
Ecology
Brittany E. Pugh, Megan Colley, Stephen J. Dugdale, Patrick Edwards, Rebecca Flitcroft, Andres Holz, Matthew Johnson, Michela Mariani, Mickey Means-Brous, Kate Meyer, Kevan B. Moffett, Lisa Renan, Franziska Schrodt, Colin Thorne, Samuel Valman, Upekala Wijayratne, Richard Field
Summary: Historically, wildfires have significantly impacted landscape-scale disturbances and enhanced biodiversity through generating temporally and spatially heterogeneous mosaics of wildfire severity and post-burn recovery. However, river management practices have often disconnected rivers from their floodplains, reducing biodiversity and increasing the likelihood of deep, uniform burns. By focusing on floodplain re-wetting and restoration, river management can reduce wildfire intensity and enhance biodiversity, contributing to climate-change resilience.
GLOBAL ECOLOGY AND BIOGEOGRAPHY
(2022)
Article
Plant Sciences
Paola Arroyo-Vargas, Andres Holz, Thomas T. Veblen
Summary: Short-interval and high-severity fires are major factors influencing understory plant communities in Araucaria-Nothofagus forests, leading to shifts in community composition and compromising ecosystem recovery.
Article
Ecology
Ellis Q. Margolis, Christopher H. Guiterman, Raphael D. Chavardes, Jonathan D. Coop, Kelsey Copes-Gerbitz, Denyse A. Dawe, Donald A. Falk, James D. Johnston, Evan Larson, Hang Li, Joseph M. Marschall, Cameron E. Naficy, Adam T. Naito, Marc-Andre Parisien, Sean A. Parks, Jeanne Portier, Helen M. Poulos, Kevin M. Robertson, James H. Speer, Michael Stambaugh, Thomas W. Swetnam, Alan J. Tepley, Ichchha Thapa, Craig D. Allen, Yves Bergeron, Lori D. Daniels, Peter Z. Fule, David Gervais, Martin P. Girardin, Grant L. Harley, Jill E. Harvey, Kira M. Hoffman, Jean M. Huffman, Matthew D. Hurteau, Lane B. Johnson, Charles W. Lafon, Manuel K. Lopez, R. Stockton Maxwell, Jed Meunier, Malcolm North, Monica T. Rother, Micah R. Schmidt, Rosemary L. Sherriff, Lauren A. Stachowiak, Alan Taylor, Erana J. Taylor, Valerie Trouet, Miguel L. Villarreal, Larissa L. Yocom, Karen B. Arabas, Alexis H. Arizpe, Dominique Arseneault, Alicia Azpeleta Tarancon, Christopher Baisan, Erica Bigio, Franco Biondi, Gabriel D. Cahalan, Anthony Caprio, Julian Cerano-Paredes, Brandon M. Collins, Daniel C. Dey, Igor Drobyshev, Calvin Farris, M. Adele Fenwick, William Flatley, M. Lisa Floyd, Ze'ev Gedalof, Andres Holz, Lauren F. Howard, David W. Huffman, Jose Iniguez, Kurt F. Kipfmueller, Stanley G. Kitchen, Keith Lombardo, Donald McKenzie, Andrew G. Merschel, Kerry L. Metlen, Jesse Minor, Christopher D. O'Connor, Laura Platt, William J. Platt, Thomas Saladyga, Amanda B. Stan, Scott Stephens, Colleen Sutheimer, Ramzi Touchan, Peter J. Weisberg
Summary: This study investigates fire regimes in North American forests using tree-ring fire scars and reveals important patterns and trends. The study also finds that modern fires are burning in similar climate spaces as historical fires, but disproportionately in warmer regions.
Article
Ecology
Angela Hernandez-Moreno, Daniel P. Soto, Alejandro Miranda, Andres Holz, Dolors Armenteras-Pascual
Summary: This study evaluated the land cover dynamics in western Chilean Patagonia and found that there was a loss of approximately 32,600 ha of old-growth forest and a recovery of approximately 69,000 ha of second-growth forest following the fires. However, around 61% of the area could potentially remain as intact forest landscape after the fires. This study provides the first evidence of the landscape state in western Patagonia after more than six decades since the large-scale fires.
Article
Ecology
R. A. Andrus, L. R. Peach, A. R. Cinquini, B. Mills, J. T. Yusi, C. Buhl, M. Fischer, B. A. Goodrich, J. M. Hulbert, A. Holz, A. J. H. Meddens, K. B. Moffett, A. Ramirez, H. D. Adams
Summary: The study reveals that the increasing mortality rates of Western redcedar are mainly attributed to climate warming and drought. Additionally, the post-drought climate conditions significantly affect the recovery rate of trees, further exacerbating the mortality of some trees.
JOURNAL OF BIOGEOGRAPHY
(2023)
Article
Forestry
Sofia Cingolani, Ignacio A. Mundo, Ivan Barbera, Andres Holz, Thomas T. Veblen, Juan Paritsis
Summary: The introduction of non-native tree species for large-scale afforestation may alter the fire regime of native ecosystems. This study in the Araucaria araucana ecosystems in Patagonia, Argentina confirms that the establishment of commercial Pinus spp. plantations increases flammability due to higher fuel load and vertical continuity. These pine plantations are more prone to wildfires and can potentially promote the occurrence and spread of fires of greater severity.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Correction
Ecology
Sebastian U. Busby, Andres Holz
FRONTIERS IN FORESTS AND GLOBAL CHANGE
(2022)
Article
Ecology
Sebastian U. Busby, Andres Holz
Summary: Infrequent but severe wildfires in mesic and/or cool conifer forests in western North America can have slow but successful forest recovery over long periods of time. However, increasing fire frequency and size under a warming climate may challenge post-fire forest recovery and lead to landscape-level shifts. Fire refugia, as remnant seed sources, play a crucial role in determining forest recovery trajectories.
FRONTIERS IN FORESTS AND GLOBAL CHANGE
(2022)
Article
Ecology
Cody Evers, Andres Holz, Sebastian Busby, Max Nielsen-Pincus
Summary: Nearly 0.8 million hectares of land were burned in the North American Pacific Northwest due to megafires in 2020. The study found that wind was the major driver of the fires, but vegetation structure and topography also significantly affected the severity of the burns.
Article
Ecology
David B. McWethy, Rene D. Garreaud, Andres Holz, Gregory T. Pederson
Summary: The study found that active fire months in south-central Chile are correlated with warm surface temperatures, dry conditions, and the presence of circumpolar high-pressure systems. Additionally, warm surface temperatures in active fire months are linked to weakened cool westerly winds and increased warm easterly winds from the Andean Cordillera. These conditions, compounded by episodic warm winds and easterly wind anomalies, will continue to create a conducive environment for large fires in south-central Chile.