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Articles 1 - 7 of 7
Full-Text Articles in Life Sciences
2014 Future Earth Young Scientists Conference On Integrated Science And Knowledge Co-Production For Ecosystems And Human Well-Being, Ivy Shiue, Leah Samberg, Benard Kulohoma, Diana Dogaru, Carina Wyborn, Perrine Hamel, Peper Sogaard Jorgensen, Paul Lussier, Bharath Sundaram, Michelle Lim, Antonio Tironi
2014 Future Earth Young Scientists Conference On Integrated Science And Knowledge Co-Production For Ecosystems And Human Well-Being, Ivy Shiue, Leah Samberg, Benard Kulohoma, Diana Dogaru, Carina Wyborn, Perrine Hamel, Peper Sogaard Jorgensen, Paul Lussier, Bharath Sundaram, Michelle Lim, Antonio Tironi
Forest Management Faculty Publications
Effective integration in science and knowledge co-production is a challenge that crosses research boundaries, climate regions, languages and cultures. Early career scientists are crucial in the identification of, and engagement with, obstacles and opportunities in the development of innovative solutions to complex and interconnected problems. On 25-31 May 2014, International Council for Science and International Social Science Council, in collaboration with the International Network of Next-Generation Ecologists and Institute for New Economic Thinking: Young Scholars Initiative, assembled a group of early career researchers with diverse backgrounds and research perspectives to reflect on and debate relevant issues around ecosystems and human …
Changing Forest Structure Across The Landscape Of The Sierra Nevada, Ca, Usa, Since The 1930s, Christopher R. Dolanc, Hugh D. Safford, James H. Thorne, Solomon Z. Dobrowski
Changing Forest Structure Across The Landscape Of The Sierra Nevada, Ca, Usa, Since The 1930s, Christopher R. Dolanc, Hugh D. Safford, James H. Thorne, Solomon Z. Dobrowski
Forest Management Faculty Publications
Understanding the dynamics of forest structure aids inference regarding future forests and their distributions around the world. Over the last few decades, several papers have addressed changing forest structure in the Sierra Nevada, CA, USA, but these studies were limited in scope. We carried out a broad comparison of forest density and composition in the 1930s versus the 2000s for the west slope of the central and northern Sierra Nevada, using the two most extensive data sets available. Forests in this region have endured a long, complex history of human disturbance, and are now experiencing climatic shifts. We subdivided the …
Spatially Nonrandom Tree Mortality And Ingrowth Maintain Equilibrium Pattern In An Old-Growth Pseudotsuga–Tsuga Forest, James A. Lutz, Andrew J. Larson, Tucker J. Furniss, Daniel C. Donato, James A. Freund, Mark E. Swanson, Kenneth J. Bible, Jiquan Chen, Jerry F. Franklin
Spatially Nonrandom Tree Mortality And Ingrowth Maintain Equilibrium Pattern In An Old-Growth Pseudotsuga–Tsuga Forest, James A. Lutz, Andrew J. Larson, Tucker J. Furniss, Daniel C. Donato, James A. Freund, Mark E. Swanson, Kenneth J. Bible, Jiquan Chen, Jerry F. Franklin
Forest Management Faculty Publications
Mortality processes in old-growth forests are generally assumed to be driven by gap-scale disturbance, with only a limited role ascribed to density-dependent mortality, but these assumptions are rarely tested with data sets incorporating repeated measurements. Using a 12-ha spatially explicit plot censused 13 years apart in an approximately 500-year-old Pseudotsuga–Tsuga forest, we demonstrate significant density-dependent mortality and spatially aggregated tree recruitment. However, the combined effect of these strongly nonrandom demographic processes was to maintain tree patterns in a state of dynamic equilibrium. Density-dependent mortality was most pronounced for the dominant latesuccessional species, Tsuga heterophylla. The long-lived, early-seral Pseudotsuga menziesii …
Can Fire Atlas Data Improve Species Distribution Model Projections?, Shawn M. Crimmins, Solomon Z. Dobrowski, Alison R. Mynsberge, Hugh D. Safford
Can Fire Atlas Data Improve Species Distribution Model Projections?, Shawn M. Crimmins, Solomon Z. Dobrowski, Alison R. Mynsberge, Hugh D. Safford
Forest Management Faculty Publications
Correlative species distribution models (SDMs) are widely used in studies of climate change impacts, yet are often criticized for failing to incorporate disturbance processes that can influence species distributions. Here we use two temporally independent data sets of vascular plant distributions, climate data, and fire atlas data to examine the influence of disturbance history on SDM projection accuracy through time in the mountain ranges of California, USA. We used hierarchical partitioning to examine the influence of fire occurrence on the distribution of 144 vascular plant species and built a suite of SDMs to examine how the inclusion of fire-related predictors …
Fire Activity And Severity In The Western Us Vary Along Proxy Gradients Representing Fuel Amount And Fuel Moisture, Sean A. Parks, Marc-Andrè Parisien, Carol Miller, Solomon Z. Dobrowski
Fire Activity And Severity In The Western Us Vary Along Proxy Gradients Representing Fuel Amount And Fuel Moisture, Sean A. Parks, Marc-Andrè Parisien, Carol Miller, Solomon Z. Dobrowski
Forest Management Faculty Publications
Numerous theoretical and empirical studies have shown that wildfire activity (e.g., area burned) at regional to global scales may be limited at the extremes of environmental gradients such as productivity or moisture. Fire activity, however, represents only one component of the fire regime, and no studies to date have characterized fire severity along such gradients. Given the importance of fire severity in dictating ecological response to fire, this is a considerable knowledge gap. For the western US, we quantify relationships between climate and the fire regime by empirically describing both fire activity and severity along two climatic water balance gradients, …
Local Spatial Structure Of Forest Biomass And Its Consequences For Remote Sensing Of Carbon Stocks, M. Rejou-Mechain, H. C. Muller-Landau, M. Detto, S. C. Thomas, T. Le Toan, S. S. Saatchi, J. S. Barreto-Silvia, N. A. Bourg, S. Bunyavejchewin, N. Butt, W. Y. Brockelman, M. Cao, D. Cardenas, J.-M. Chiang, G. B. Chuyong, K. Clay, R. Condit, H. S. Dattaraja, S. J. Davies, A. Duque, S. Esufali, C. Ewango, R.H.S. Fernando, C. D. Fletcher, I.A.U.N. Gunatilleke, Z. Hao, K. E. Harms, T. B. Hart, B. Herault, R. W. Howe, S. P. Hubbell, D. J. Johnson, D. Kenfack, A. J. Larson, L. Lin, Y. Lin, J. A. Lutz, J.-R. Makana, Y. Malhi, T. R. Marthews, R. W. Mcewan, S. M. Mcmahon, W. J. Mcshea, R. Muscarella, A. Nathalang, N.S.M. Noor, C. J. Nytch, A. A. Oliveira, R. P. Phillips, N. Pongpattananurak, R. Punchi-Manage, R. Salim, J. Schurman, R. Sukumar, H. S. Suresh, U. Suwanvecho, D. W. Thomas, J. Thompson, M. Uriarte, R. Valencia, A. Vicentini, A. T. Wolf, S. Yap, Z. Yuan, C. E. Zartman, J. K. Zimmerman, J. Chave
Local Spatial Structure Of Forest Biomass And Its Consequences For Remote Sensing Of Carbon Stocks, M. Rejou-Mechain, H. C. Muller-Landau, M. Detto, S. C. Thomas, T. Le Toan, S. S. Saatchi, J. S. Barreto-Silvia, N. A. Bourg, S. Bunyavejchewin, N. Butt, W. Y. Brockelman, M. Cao, D. Cardenas, J.-M. Chiang, G. B. Chuyong, K. Clay, R. Condit, H. S. Dattaraja, S. J. Davies, A. Duque, S. Esufali, C. Ewango, R.H.S. Fernando, C. D. Fletcher, I.A.U.N. Gunatilleke, Z. Hao, K. E. Harms, T. B. Hart, B. Herault, R. W. Howe, S. P. Hubbell, D. J. Johnson, D. Kenfack, A. J. Larson, L. Lin, Y. Lin, J. A. Lutz, J.-R. Makana, Y. Malhi, T. R. Marthews, R. W. Mcewan, S. M. Mcmahon, W. J. Mcshea, R. Muscarella, A. Nathalang, N.S.M. Noor, C. J. Nytch, A. A. Oliveira, R. P. Phillips, N. Pongpattananurak, R. Punchi-Manage, R. Salim, J. Schurman, R. Sukumar, H. S. Suresh, U. Suwanvecho, D. W. Thomas, J. Thompson, M. Uriarte, R. Valencia, A. Vicentini, A. T. Wolf, S. Yap, Z. Yuan, C. E. Zartman, J. K. Zimmerman, J. Chave
Forest Management Faculty Publications
Advances in forest carbon mapping have the potential to greatly reduce uncertainties in the global carbon budget and to facilitate effective emissions mitigation strategies such as REDD+. Though broad scale mapping is based primarily on remote sensing data, the accuracy of resulting forest carbon stock estimates depends critically on the quality of field measurements and calibration procedures. The mismatch in spatial scales between field inventory plots and larger pixels of current and planned remote sensing products for forest biomass mapping is of particular concern, as it has the potential to introduce errors, especially if forest biomass shows strong local spatial …
Structure And Composition Of Old-Growth And Unmanaged Second-Growth Riparian Forests At Redwood National Park, Usa, Christopher R. Keyes, Emily K. Teraoka
Structure And Composition Of Old-Growth And Unmanaged Second-Growth Riparian Forests At Redwood National Park, Usa, Christopher R. Keyes, Emily K. Teraoka
Forest Management Faculty Publications
Restoration of second-growth riparian stands has become an important issue for managers of redwood (Sequoia sempervirens [D. Don] Endl.) forest reserves. Identifying differences between old-growth and second-growth forest vegetation is a necessary step in evaluating restoration needs and targets. The objective of this study was to characterize and contrast vegetation structure and composition in old-growth and unmanaged second-growth riparian forests in adjacent, geomorphologically similar watersheds at Redwood National Park. In the old-growth, redwood was the dominant overstory species in terms of stem density, basal area, and importance values. Second-growth was dominated by red alder (Alnus rubra Bong.), …