John Wesley Powell Center for Analysis and Synthesis

Publications

Filter Total Items: 104
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Year Published: 2019

FLUXNET-CH4 Synthesis Activity: Objectives, observations, and future directions

Here we describe a new coordination activity and initial results for a global synthesis of eddy covariance CH4 flux measurements. This paper describes the formation of, and initial results for, a new FLUXNET coordination network for ecosystem-scale methane (CH4) measurements at 60 sites globally, organized by the Global Carbon Project in...

Knox, Sara H.; Jackson, Robert B.; Poulter, Benjamin; McNicol, Gavin; Fluet-Chouinard, Etienne; Zhang, Zheng; Hugelius, Gustaf; Bousquet, Philippe; Canadell, Josep G; Saunois, Marielle; Papale, Dario; Chu, Housen; Keenan, Trevor F.; Baldocchi, Dennis; Torn, Margaret S; Mammarella, Ivan; Trotta, Carlo; Aurela, Mika; Bohrer, Gil; Campbell, David I; Cescatti, Alessandro; Chamberlain, Samuel D.; Chen, Jiquan; Chen, Weinan; Dengel, Sigrid; Desai, Ankur R.; Euskirchen, Eugenie S; Friborg, Thomas; Gasbarra, Daniele; Goded, Ignacio; Goeckede, Mathias; Heimann, Martin; Helbig, Manuel; Hirano, Takashi; Hollinger, David Y.; Iwata, Hiroki; Kang, Minseok; Klatt, Janina; Krauss, Ken; Kutzbach, Lars; Lohila, Annalea; Mitra, Bhaskar; Morin, Timothy H; Nilsson, Mats B; Niu, Shuli; Noormets, Asko; Oechel, Walter C.; Peichl, Matthias; Peltola, Olli; Reba, Michele L.; Richardson, Andrew D.; Runkle, Benjamin R K; Ryu, Youngryel; Sachs, Torsten; Schäfer, Karina V R; Schmid, Hans Peter; Shurpali, Narasinha; Sonnentag, Oliver; Tang, Angela C I; Ueyama, Masahito; Vargas, Rodrigo; Vesala, Timo; Ward, Eric; Windham-Myers, Lisamarie; Wohlfahrtd, Georg; Zona, Donatella
Knox, S.H., Jackson, R.B., Poulter, B., McNicol, G., Fluet-Chouinard, E., Zhang, Z., Hugelius, G., Bousquet, P., Canadell, J.G., Saunois, M., Papale, D., Chu, H., Keenan, T.F., Baldocchi, D., Torn, M.S., Mammarella, I., Trotta, C., Aurela, M., Bohrer, G., Campbell, D.I., Cescatti, A., Chamberlain, S., Chen, J., Chen, W., Dengel, S., Desai, A.R., Euskirchen, E., Friborg, T., Gasbarra, D., Goded, I., Goeckede, M., Heimann, M., Helbig, M., Hirano, T., Hollinger, D.Y., Iwata, H., Kang, M., Klatt, J., Krauss, K.W., Kutzbach, L., Lohila, A., Mitra, B., Morin, T.H., Nilsson, M.B., Niu, S., Noormets, A., Oechel, W.C., Peichl, M., Peltola, O., Reba, M.L., Richardson, A.D., Runkle, B.R.K., Ryu, Y., Sachs, T., Schäfer, K.V.R., Schmid, H.P., Shurpali, N., Sonnentag, O., Tang, A.C.I., Ueyama, M., Vargas, R., Vesala, T., Ward, E.J., Windham-Myers, L., Wohlfahrt, G., and Zona, D., 2019, FLUXNET-CH4 synthesis activity: objectives, observations, and future directions: Bulletin of the American Meteorological Society, First Online, https://doi.org/10.1175/BAMS-D-18-0268.1.

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Year Published: 2018

Beyond clay: Towards an improved set of variables for predicting soil organic matter content

Improved quantification of the factors controlling soil organic matter (SOM) stabilization at continental to global scales is needed to inform projections of the largest actively cycling terrestrial carbon pool on Earth, and its response to environmental change. Biogeochemical models rely almost exclusively on clay content to modify rates of SOM...

Rasmussen, Craig; Heckman, Katherine; Wieder, William R.; Keiluweit, Marco; Lawrence, Corey R.; Berhe, Asmeret Asefaw; Blankinship, Joseph C.; Crow, Susan E.; Druhan, Jennifer; Hicks Pries, Caitlin E.; Marin-Spiotta, Erika; Plante, Alain F.; Schadel, Christina; Schmiel, Joshua P.; Sierra, Carlos A.; Thompson, Aaron; Wagai, Rota
Rasmussen C., Heckman K., Wieder W.R., Keiluweit M., Lawrence C.R., Berhe A.A., Blankinship J.C., Crow S.E., Druhan J.L., Hicks Pries C.E., Marin-Spiotta E., Plante A.F., Schädel C., Schimel J.P., Sierra C.A., Thompson A., Wagai R. (2018): Beyond clay: towards an improved set of variables for predicting soil organic matter content. Biogeochemistry (online). DOI: 10.1007/s10533-018-0424-3

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Year Published: 2018

Iterative near-term ecological forecasting: Needs, opportunities, and challenges

Two foundational questions about sustainability are “How are ecosystems and the services they provide going to change in the future?” and “How do human decisions affect these trajectories?” Answering these questions requires an ability to forecast ecological processes. Unfortunately, most ecological forecasts focus on centennial-scale climate...

Dietze, Michael C.; Fox, Andrew; Beck-Johnson, Lindsay; Betancourt, Julio L.; Hooten, Mevin B.; Jarnevich, Catherine S.; Keitt, Timothy H.; Kenney, Melissa A.; Laney, Christine M.; Larsen, Laurel G.; Loescher, Henry W.; Lunch, Claire K.; Pijanowski, Bryan; Randerson, James T.; Read, Emily; Tredennick, Andrew T.; Vargas, Rodrigo; Weathers, Kathleen C.; White, Ethan P.
Dietze M.C., A. Fox, J. Betancourt, M. Hooten, C. Jarnevich, T. Keitt, M. A. Kenney, C. Laney, L. Larsen, H. W. Loescher, C. Lunch, B. Pijanowski, J. T. Randerson, E. Read, A. Tredennick, K. C. Weathers, E. P. White. 2018. Iterative near-term ecological forecasting: Needs, opportunities, and challenges. PNAS Proceedings of the National Academy of Sciences USA www.pnas.org/cgi/doi/10.1073/pnas.1710231115.

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Year Published: 2018

The metabolic regimes of flowing waters

The processes and biomass that characterize any ecosystem are fundamentally constrained by the total amount of energy that is either fixed within or delivered across its boundaries. Ultimately, ecosystems may be understood and classified by their rates of total and net productivity and by the seasonal patterns of photosynthesis and respiration....

Bernhardt, Emily S.; Heffernan, Jim B.; Grimm, Nancy B.; Stanley, Emily H.; Harvey, Judson; Arroita, M.; Appling, Alison P.; Cohen, M.J.; McDowell, William H.; Hall, R.O.; Read, Jordan S.; Roberts, B.J.; Stets, Edward G.; Yackulic, Charles B.

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Year Published: 2018

Range position and climate sensitivity: The structure of among-population demographic responses to climatic variation

Species’ distributions will respond to climate change based on the relationship between local demographic processes and climate and how this relationship varies based on range position. A rarely tested demographic prediction is that populations at the extremes of a species’ climate envelope (e.g., populations in areas with the highest mean annual...

Amburgey, Staci M.; Miller, David A. W.; Grant, Evan H. Campbell; Rittenhouse, Tracy A. G.; Benard, Michael F.; Richardson, Jonathan L.; Urban, Mark C.; Hughson, Ward; Brand, Adrianne B,; Davis, Christopher J.; Hardin, Carmen R.; Paton, Peter W. C.; Raithel, Christopher J.; Relyea, Rick A.; Scott, A. Floyd; Skelly, David K.; Skidds, Dennis E.; Smith, Charles K.; Werner, Earl E.
Amburgey, S. M., Miller, D. A. W., Grant, E. H. C., Rittenhouse, T. A. G., Benard, M. F., Richardson, J. L., Urban, M. C., Hughson, W., Brand, A. B., Davis, C. J., Hardin, C. R., Paton, P. W. C., Raithel, C. J., Relyea, R. A., Scott, A. F., Skelly, D. K., Skidds, D. K., Smith, C. K., and Werner, E. E., 2018, Range position and climate sensitivity: The structure of among-population demographic responses to climatic variation: Global Change Biology, v. 24, no. 1, p. 439-454. https://doi.org/10.1111/gcb.13817

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Year Published: 2018

Improving predictions of tropical forest response to climate change through integration of field studies and ecosystem modeling

Tropical forests play a critical role in carbon and water cycles at a global scale. Rapid climate change is anticipated in tropical regions over the coming decades and, under a warmer and drier climate, tropical forests are likely to be net sources of carbon rather than sinks. However, our understanding of tropical forest response and feedback to...

Feng, Xiaohui; Uriarte, María; González, Grizelle; Reed, Sasha C.; Thompson, Jill; Zimmerman, Jess K.; Murphy, Lora
Feng, X., Uriarte, M., Gonzalez, G., Reed, S., Thompson, J., Zimmerman, J.K., and Murphy, L., 2017, Improving predictions of tropical forest response to climate change through integration of field studies and ecosystem modeling: Global Change Biology, v. (online), http://dx.doi.org/ 10.1111/gcb.13863.

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Year Published: 2017

Future soil moisture and temperature extremes imply expanding suitability for rainfed agriculture in temperate drylands

The distribution of rainfed agriculture is expected to respond to climate change and human population growth. However, conditions that support rainfed agriculture are driven by interactions among climate, including climate extremes, and soil moisture availability that have not been well defined. In the temperate regions that support much of the...

Bradford, John B.; Schlaepfer, Daniel R.; Lauenroth, William K.; Yackulic, Charles B.; Duniway, Michael C.; Hall, Sonia A.; Jia, Gensuo; Jamiyansharav, Khishigbayar; Munson, Seth M.; Wilson, Scott D.; Tietjen, Britta
Bradford, J.B., Schlaepfer, D.R., Lauenroth, W.K., Yackulic, C.B., Duniway, M., Hall, S., Jia, G., Jamiyansharav, K., Munson, S.M., Wilson, S.D., and Tietjen, B., 2017, Future soil moisture and temperature extremes imply expanding suitability for rainfed agriculture in temperate drylands: Scientific Reports, v. (online), http://dx.doi.org/10.1038/s41598-017-13165-x.

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Year Published: 2017

Flow and residence times of dynamic river bank storage and sinuosity-driven hyporheic exchange

Hydrologic exchange fluxes (HEFs) vary significantly along river corridors due to spatiotemporal changes in discharge and geomorphology. This variability results in the emergence of biogeochemical hot-spots and hot-moments that ultimately control solute and energy transport and ecosystem services from the local to the watershed scales. In this...

Gomez-Velez, J.D.; Wilson, J.L.; Cardenas, M.B.; Harvey, Judson

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Year Published: 2017

Quantile regression applications in ecology and the environmental sciences

No abstract available.

Koenker, Roger; Chernozhukov, Victor; He, Xuming ; Peng, Limin; Cade, Brian S.
Cade, B. S. 2017. Quantile regression applications in ecology and the environmental sciences. Pages 429-454 in R. Koenker et al., eds. Handbook of Modern Statistical Methods: Handbook of Quantile Regression. Chapman and Hall, CRC Press.

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Year Published: 2017

Channel response to sediment release: insights from a paired analysis of dam removal

Dam removals with unmanaged sediment releases are good opportunities to learn about channel response to abruptly increased bed material supply. Understanding these events is important because they affect aquatic habitats and human uses of floodplains. A longstanding paradigm in geomorphology holds that response rates to landscape disturbance...

Collins, Mathias J.; Snyder, Noah P.; Boardman, Graham; Banks, William S.; Andrews, Mary; Baker, Matthew E.; Conlon, Maricate; Gellis, Allen; McClain, Serena; Miller, Andrew; Wilcock, Peter
Collins, M.J., Snyder, N.P., Boardman, Graham, Banks, W.S.L., Andrews, Mary, Baker, M.E., Conlon, Maricate, Gellis, Allen, McClain, Serena, Miller, Andrew, and Wilcok, Peter, 2017, Channel response to sediment release: insights from a paired analysis of dam removal: Earth Surface Processes and Landforms, v. 42, no. 11, p. 1,636-1,651, doi: 10.1002/esp.4108.

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Year Published: 2017

Geomorphic responses to dam removal in the United States – a two-decade perspective

Recent decades have seen a marked increase in the number of dams removed in the United States. Investigations following a number of removals are beginning to inform how, and how fast, rivers and their ecosystems respond to released sediment. Though only a few tens of studies detail physical responses to removals, common findings have begun to...

Tsutsumi, Daizo; Laronne, Jonathan B.; Major, Jon J.; East, Amy E.; O'Connor, Jim E.; Grant, Gordon E.; Wilcox, Andrew C.; Magirl, Christopher S.; Collins, Matthias J.; Tullos, Desiree D.
Major, J.J., East, A.E., O’Connor, J.E., Grant, G.E., Wilcox, A.C., Magirl, C.S., Collins, M.J., Tullos, D.D., 2017, Geomorphic responses to dam removal in the United States—a two-decade perspective, in Tsutsumi, D., Laronne, J., editors, Gravel Bed Rivers: Processes and Disasters. Wiley and Sons, p. 355-383.

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Year Published: 2017

A synoptic view of the Third Uniform California Earthquake Rupture Forecast (UCERF3)

Probabilistic forecasting of earthquake‐producing fault ruptures informs all major decisions aimed at reducing seismic risk and improving earthquake resilience. Earthquake forecasting models rely on two scales of hazard evolution: long‐term (decades to centuries) probabilities of fault rupture, constrained by stress renewal statistics, and short‐...

Field, Edward H.; Jordan, Thomas H.; Page, Morgan T.; Milner, Kevin R.; Shaw, Bruce E.; Dawson, Timothy E.; Biasi, Glenn; Parsons, Thomas E.; Hardebeck, Jeanne L.; Michael, Andrew J.; Weldon, Ray; Powers, Peter M.; Johnson, Kaj M.; Zeng, Yuehua; Bird, Peter; Felzer, Karen; van der Elst, Nicholas; Madden, Christopher; Arrowsmith, Ramon; Werner, Maximillan J.; Thatcher, Wayne R.