Search Results - "Ballantyne, Ashley P."

Biophysical feedback of global forest fires on surface temperature by Liu, Zhihua, Ballantyne, Ashley P., Cooper, L. Annie

“…The biophysical feedbacks of forest fire on Earth’s surface radiative budget remain uncertain at the global scale. Using satellite observations, we show that…”
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Is atmospheric phosphorus pollution altering global alpine Lake stoichiometry? by Brahney, Janice, Mahowald, Natalie, Ward, Daniel S., Ballantyne, Ashley P., Neff, Jason C.

“…Anthropogenic activities have significantly altered atmospheric chemistry and changed the global mobility of key macronutrients. Here we show that contemporary…”
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Precipitation thresholds regulate net carbon exchange at the continental scale by Liu, Zhihua, Ballantyne, Ashley P., Poulter, Benjamin, Anderegg, William R. L., Li, Wei, Bastos, Ana, Ciais, Philippe

“…Understanding the sensitivity of ecosystem production and respiration to climate change is critical for predicting terrestrial carbon dynamics. Here we show…”
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Tropical nighttime warming as a dominant driver of variability in the terrestrial carbon sink by Anderegg, William R. L., Ballantyne, Ashley P., Smith, W. Kolby, Majkut, Joseph, Rabin, Sam, Beaulieu, Claudie, Birdsey, Richard, Dunne, John P., Houghton, Richard A., Myneni, Ranga B., Pan, Yude, Sarmiento, Jorge L., Serota, Nathan, Shevliakova, Elena, Tans, Pieter, Pacala, Stephen W.

“…The terrestrial biosphere is currently a strong carbon (C) sink but may switch to a source in the 21st century as climate-driven losses exceed CO₂-driven C…”
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A Fatty Acid Based Bayesian Approach for Inferring Diet in Aquatic Consumers by Galloway, Aaron W E, Brett, Michael T, Holtgrieve, Gordon W, Ward, Eric J, Ballantyne, Ashley P, Burns, Carolyn W, Kainz, Martin J, Müller-Navarra, Doerthe C, Persson, Jonas, Ravet, Joseph L, Strandberg, Ursula, Taipale, Sami J, Alhgren, Gunnel

“…We modified the stable isotope mixing model MixSIR to infer primary producer contributions to consumer diets based on their fatty acid composition. To…”
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Respiratory loss during late-growing season determines the net carbon dioxide sink in northern permafrost regions by Liu, Zhihua, Kimball, John S., Ballantyne, Ashley P., Parazoo, Nicholas C., Wang, Wen J., Bastos, Ana, Madani, Nima, Natali, Susan M., Watts, Jennifer D., Rogers, Brendan M., Ciais, Philippe, Yu, Kailiang, Virkkala, Anna-Maria, Chevallier, Frederic, Peters, Wouter, Patra, Prabir K., Chandra, Naveen

“…Warming of northern high latitude regions (NHL, > 50 °N) has increased both photosynthesis and respiration which results in considerable uncertainty regarding…”
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Increased high‐latitude photosynthetic carbon gain offset by respiration carbon loss during an anomalous warm winter to spring transition by Liu, Zhihua, Kimball, John S., Parazoo, Nicholas C., Ballantyne, Ashley P., Wang, Wen J., Madani, Nima, Pan, Caleb G., Watts, Jennifer D., Reichle, Rolf H., Sonnentag, Oliver, Marsh, Philip, Hurkuck, Miriam, Helbig, Manuel, Quinton, William L., Zona, Donatella, Ueyama, Masahito, Kobayashi, Hideki, Euskirchen, Eugénie S.

“…Arctic and boreal ecosystems play an important role in the global carbon (C) budget, and whether they act as a future net C sink or source depends on climate…”
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Field-based tree mortality constraint reduces estimates of model-projected forest carbon sinks by Yu, Kailiang, Ciais, Philippe, Seneviratne, Sonia I., Liu, Zhihua, Chen, Han Y. H., Barichivich, Jonathan, Allen, Craig D., Yang, Hui, Huang, Yuanyuan, Ballantyne, Ashley P.

“…Considerable uncertainty and debate exist in projecting the future capacity of forests to sequester atmospheric CO 2 . Here we estimate spatially explicit…”
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Empirical estimates of regional carbon budgets imply reduced global soil heterotrophic respiration by Ciais, Philippe, Yao, Yitong, Gasser, Thomas, Baccini, Alessandro, Wang, Yilong, Lauerwald, Ronny, Peng, Shushi, Bastos, Ana, Li, Wei, Raymond, Peter A., Canadell, Josep G., Peters, Glen P., Andres, Rob J., Chang, Jinfeng, Yue, Chao, Dolman, A. Johannes, Haverd, Vanessa, Hartmann, Jens, Laruelle, Goulven, Konings, Alexandra G., King, Anthony W., Liu, Yi, Luyssaert, Sebastiaan, Maignan, Fabienne, Patra, Prabir K., Peregon, Anna, Regnier, Pierre, Pongratz, Julia, Poulter, Benjamin, Shvidenko, Anatoly, Valentini, Riccardo, Wang, Rong, Broquet, Gregoire, Yin, Yi, Zscheischler, Jakob, Guenet, Bertrand, Goll, Daniel S., Ballantyne, Ashley-P., Yang, Hui, Qiu, Chunjing, Zhu, Dan

“…Resolving regional carbon budgets is critical for informing land-based mitigation policy. For nine regions covering nearly the whole globe, we collected…”
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Global synthesis for the scaling of soil microbial nitrogen to phosphorus in terrestrial ecosystems by Wang, Zhiqiang, Wang, Mingcheng, Yu, Kailiang, Hu, Huifeng, Yang, Yuanhe, Ciais, Philippe, Ballantyne, Ashley P, Niklas, Karl J, Huang, Heng, Yao, Buqing, Wright, S Joseph

“…Abstract Nitrogen (N) and phosphorus (P) are associated with the life history of all organisms. Soil microbes play essential roles in nutrient cycling and…”
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Coarse woody debris are buffering mortality-induced carbon losses to the atmosphere in tropical forests by Yang, Hui, Ciais, Philippe, Chave, Jérôme, Huang, Yuanyuan, Ballantyne, Ashley P, Yu, Kailiang, Berzaghi, Fabio, Wigneron, Jean-Pierre

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Below-surface water mediates the response of African forests to reduced rainfall by Madani, Nima, Kimball, John S, Parazoo, Nicholas C, Ballantyne, Ashley P, Tagesson, Torbern, Jones, Lucas A, Reichle, Rolf H, Palmer, Paul I, Velicogna, Isabella, Bloom, A Anthony, Saatchi, Sassan, Liu, Zhihua, Geruo, A

“…Terrestrial ecosystem gross primary productivity (GPP) is the largest land-atmosphere carbon flux and the primary mechanism of photosynthetic fixation of…”
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The influence of hydroclimate and management on forest regrowth across the western U.S by Hoylman, Zachary H, Jencso, Kelsey, Archer, Vince, Efta, James (Andy), Holden, Zachary A, Ballantyne, Ashley P, Johnson, Marie

“…Abstract Forests are subject to a range of management practices but it is unclear which produce the most rapid rates of regrowth across heterogeneous moisture…”
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Estimates of Arctic land surface temperatures during the early Pliocene from two novel proxies by Csank, Adam Z., Tripati, Aradhna K., Patterson, William P., Eagle, Robert A., Rybczynski, Natalia, Ballantyne, Ashley P., Eiler, John M.

“…During the Pliocene (2.6 to 5 Ma ago) atmospheric CO 2 levels have been estimated as similar to or slightly above present levels (Tripati et al., 2009; Pagani…”
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Decadal variability in land carbon sink efficiency by Zhu, Lei, Ciais, Philippe, Bastos, Ana, Ballantyne, Ashley P., Chevallier, Frederic, Gasser, Thomas, Kondo, Masayuki, Pongratz, Julia, Rödenbeck, Christian, Li, Wei

“…Background The climate mitigation target of limiting the temperature increase below 2 °C above the pre-industrial levels requires the efforts from all…”
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Unsaturated fatty acid content in seston and tropho-dynamic coupling in lakes by Müller-Navarra, Dörthe C, Brett, Michael T, Park, Sangkyu, Chandra, Sudeep, Ballantyne, Ashley P, Zorita, Eduardo, Goldman, Charles R

“…Determining the factors that control food web interactions is a key issue in ecology. The empirical relationship between nutrient loading (total phosphorus)…”
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The amplification of Arctic terrestrial surface temperatures by reduced sea-ice extent during the Pliocene by Ballantyne, Ashley P., Axford, Yarrow, Miller, Gifford H., Otto-Bliesner, Bette L., Rosenbloom, Nan, White, James W.C.

“…Many past warm periods exhibited greatly reduced latitudinal temperature gradients as a result of amplified Arctic surface temperatures as well as more…”
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Data on beetle-killed and surviving lodgepole pine (Pinus contorta) radial growth from the Beaverhead-Deerlodge National Forest, MT prior to a severe mountain pine beetle outbreak by Cooper, L. Annie, Reed, Charlotte C., Ballantyne, Ashley P.

“…This article contains measurements of raw radial growth, distance to pith, and calculated basal area increments (BAI) from 444 5-mm increment cores (237 trees)…”
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Increases in Land Surface Temperature in Response to Fire in Siberian Boreal Forests and Their Attribution to Biophysical Processes by Liu, Zhihua, Ballantyne, Ashley P., Cooper, L. Annie

“…Wildfire is the most prevalent natural disturbance in boreal forests and impacts climate through biogeochemical (e.g., greenhouse gas emission from biomass…”
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Large divergence of satellite and Earth system model estimates of global terrestrial CO2 fertilization by Kolby Smith, W., Reed, Sasha C., Cleveland, Cory C., Ballantyne, Ashley P., Anderegg, William R. L., Wieder, William R., Liu, Yi Y., Running, Steven W.

“…Satellite-derived estimates of increases in terrestrial net primary productivity are less than half of those derived from Earth system models. This discrepancy…”
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