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Displaying 12,591 - 12,600 of 64,684 Publications- Estimations of tropical insect diversity generally suffer from lack of known groups or faunas against which extrapolations can be made, and have seriously underestimated the diversity of some taxa. Here we report the intensive inventory of a four-hectare tropical cloud forest in Costa Rica for one year, which yielded 4332 species of Diptera, providing the first verifiable basis for diversity of a major group of insects at a single site in the tropics. In total 73 families were present, all of which were studied to the species level, providing potentially complete coverage of all families...AuthorsBrian V. Brown, Art Borkent, Peter H. Adler, Dalton de Souza Amorim, Kevin Barber, Daniel Bickel, Stephanie Boucher, Scott E. Brooks, John Burger, Zelia L. Burington, Renato S. Capellari, Daniel N. R. Costa, Jeffrey M. Cumming, Greg Curler, Carl W. Dick, John H. Epler, Eric Fisher, Stephen D. Gaimari, Jon Gelhaus, David A. Grimaldi, John Hash, Martin Hauser, Heikki Hippa, Sergio Ibanez-Bernal, Mathias Jaschhof, Elena P. Kameneva, Peter H. Kerr, Valery Korneyev, Cheslavo A. Korytkowski, Giar-Ann Kung, Gunnar Mikalsen Kvifte, Owen Lonsdale, Stephen A. Marshall, Wayne Mathis, Verner Michelsen, Stefan Naglis, Allen L. Norrbom, Steven Paiero, Thomas Pape, Alessandre Pereira-Colavite, Marc Pollet, Sabrina Rochefort, Alessandra Rung, Justin B. Runyon, Jade Savage, Vera C. Silva, Bradley J. Sinclair, Jeffrey H. Skevington, John O. Stireman, John Swann, F. Christian Thompson, Pekka Vilkamaa, Terry Wheeler, Terry Whitworth, Maria Wong, D. Monty Wood, Norman Woodley, Tiffany Yau, Thomas J. Zavortink, Manuel A. ZumbadoKeywordsSourceCommunications Biology. 1: 21.Year2018
- El Yunque National Forest Atlas is a collaborative effort by the International Institute of Tropical Forestry and El Yunque National Forest to provide upto-date maps and analyses of spatial information of an important natural reserve in Puerto Rico and the only tropical forest in the National Forest System of the United States. El Yunque National Forest Atlas serves as a companion tool to the El Yunque National Forest 2014 Forest Plan Assessment Report, Phase One, under the U.S. Department of Agriculture (USDA), Forest Service 2012 Planning Rule. The assessment documents current ecological,...AuthorsMaya Quinones, Isabel K. Parés-Ramos, William A. Gould, Grizelle Gonzalez, Kathleen McGinley, Pedro RíosKeywordsSourceGeneral Technical ReportYear2018
- Esta publicación es un esfuerzo colaborativo entre el Instituto Internacional de Dasonomía Tropical y el Bosque Nacional El Yunque para proveer mapas y análisis de información espacial actualizados sobre una importante reserva natural en Puerto Rico y el único bosque tropical dentro del Sistema de Bosques Nacionales de los Estados Unidos. El Atlas del Bosque Nacional El Yunque sirve como una herramienta complementaria del Informe de Evaluación del Plan del Bosque Nacional El Yunque del 2014, Fase Uno, bajo el Reglamento de Planificación del Servicio Forestal de EE.UU. de 2012. El informe...AuthorsMaya Quinones, Isabel K. Parés-Ramos, William A. Gould, Grizelle Gonzalez, Kathleen McGinley, Pedro RíosKeywordsSourceGeneral Technical Report.Year2018
- Management practices since the late 19th century, including fire exclusion and harvesting, have altered the structure of ponderosa pine (Pinus ponderosa Douglas ex P. Lawson & C. Lawson) dominated forests across the western United States. These structural changes have the potential to contribute to uncharacteristic wildfire behavior and effects. Locally-relevant information on historical forest structure can improve efforts to restore more fire adapted conditions. We used a dendrochronological approach to reconstruct pre-settlement era (ca. 1860) structure for 170, 0.5-ha plots in montane...AuthorsMichael A. Battaglia, Benjamin Gannon, Peter M. Brown, Paula J. Fornwalt, Antony S. Cheng, Laurie HuckabyKeywordsSourceForest Ecology and Management. 422: 147-160.Year2018
- Container volume and irrigation management affect seedling growth in the nursery and field. We evaluated the effects of container volumes (D40, 656 ml; D60, 983 ml) and subirrigation schedules (85%, 75%, 65%, and 55% of 100% total substrate moisture content, TSMC) on seedling growth in a greenhouse and outplanting performance of Chinese cork oak (Quercus variabilis Blume) for one growing season. In the greenhouse, morphological attributes of seedlings grown at 85% and 75% TSMC in D60 were greater than those grown at 65% and 55% TSMC in D40. After outplanting, seedlings grown at 75% TSMC in...AuthorsQiaoyu Sun, Kas Dumroese, Yong LiuSourceScandinavian Journal of Forest Research. 33: 560-567.Year2018
High-severity fire: Evaluating its key drivers and mapping its probability across western US forests
Wildland fire is a critical process in forests of the western United States (US). Variation in fire behavior, which is heavily influenced by fuel loading, terrain, weather, and vegetation type, leads to heterogeneity in fire severity across landscapes. The relative influence of these factors in driving fire severity, however, is poorly understood. Here, we explore the drivers of high-severity fire for forested ecoregions in the western US over the period 2002–2015. Fire severity was quantified using a satellite-inferred index of severity, the relativized burn ratio. For each ecoregion, we...AuthorsSean A. Parks, Lisa M. Holsinger, Matthew H. Panunto, W. Matt Jolly, Solomon Z. Dobrowski, Greg DillonKeywordsSourceEnvironmental Research Letters. 13: 44037.Year2018- Many dry conifer forests in the southwestern USA and elsewhere historically (prior to the late 1800’s) experienced fairly frequent surface fire at intervals ranging from roughly five to 30 years. Due to more than 100 years of successful fire exclusion, however, many of these forests are now denser and more homogenous, and therefore they have a greater probability of experiencing stand-replacing fire compared to prior centuries. Consequently, there is keen interest in restoring such forests to conditions that are conducive to low-severity fire. Yet, there have been no regional assessments...AuthorsSean A. Parks, Solomon Z. Dobrowski, Matthew H. PanuntoKeywordsSourceForests. 9: 165.Year2018
- Extensive high-severity wildfires have driven major losses of ponderosa pine and mixed-conifer forests in the southwestern United States, in some settings catalyzing enduring conversions to nonforested vegetation types. Management interventions to reduce the probability of stand-replacing wildfire have included mechanical fuel treatments, prescribed fire, and wildfire managed for resource benefit. In 2011, the Las Conchas fire in northern New Mexico burned forested areas not exposed to fire for >100 yr, but also reburned numerous prescribed fire units and/or areas previously burned by...AuthorsRyan B. Walker, Jonathan D. Coop, Sean A. Parks, Laura TraderKeywordsSourceEcosphere. 9(4): e02182.Year2018
- Large rivers constitute small portions of drainage networks but provide important migratory habitats and fisheries for salmon and trout when and where temperatures are sufficiently cold. Management and conservation of cold‐water fishes in the current era of rapid climate change requires knowing how riverine thermal environments are evolving and the potential for detrimental biological impacts. Robust estimates of warming rates, however, are lacking due to limited long‐term temperature monitoring, so here we compile the best available multi‐decadal records and estimate trends at 391 sites...AuthorsDaniel J. Isaak, Charlie H. Luce, Dona Horan, Gwynne L. Chandler, Sherry P. Wollrab, David E. NagelKeywordsSourceTransactions of the American Fisheries Society. 147: 566-587.Year2018
- Statistical meta-analysis is a powerful and useful tool to quantitatively synthesize the information conveyed in published studies on a particular topic. It allows identifying and quantifying overall patterns and exploring causes of variation. The inclusion of published works in meta-analyses requires, however, a minimum quality standard of the reported data and information on the methodology used. Our experience with conducting a meta-analysis on the relationship between seedling quality and field performance is that nearly one third of the apparently relevant publications had to be...AuthorsEnrique Andivia, Pedro Villar‑Salvador, Juan A. Oliet, Jaime Puertolas, Kas DumroeseKeywordsSourceNew Forests 50: 255-266.Year2018