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Ten Notable Publications from Harvard Forest LTER-V (2012-2018)

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(LTER co-Is in bold)

1. Melillo, J. M., Frey, S. D., DeAngelis, K. M., Werner, W. J., Bernard, M. J., Bowles, F. P., Pold, G., Knorr, M. A., Grandy, A. S. 2017. Long-term pattern and magnitude of soil carbon feedback to the climate system in a warming world. Science 358: 101-105.
Associated datasets: HF005

2. Frey, S. D., Ollinger, S. V., Nadelhoffer, K. J., Bowden, R. D., Brzostek, E. R., Burton, A. J., Caldwell, B. A., Crow, S., Goodale, C. G., Grandy, A. S., Finzi, A. C., Kramer, M. G., Lajtha, K., LeMoine, J., Martin, M., McDowell, W. H., Minocha, R., Sadowsky, J. J., Templer, P. H., Wickings, K. 2014. Chronic nitrogen additions suppress decomposition and sequester soil carbon in temperate forests. Biogeochemistry 121: 305-316.
Associated datasets: HF008, HF166, HF297

3. Barker Plotkin, A., Foster, D. R., Carlson, J., Magill, A. H. 2013. Survivors, not invaders, control forest development following simulated hurricane. Ecology 94: 414-423.
Associated datasets: HF002HF101HF207

These three high-profile papers synthesize >20 year patterns and biotic drivers of response to contrasting natural disturbance (hurricane) and anthropogenic stress (N saturation; soil warming) from experiments initiated in HFR LTERI. Each revealed surprises: a four-phase pattern of soil organic matter decay and carbon fluxes to the atmosphere with warming; enhanced soil C stocks in N-enriched soils via suppressed decomposition; resistance to changes in ecosystem processes and invasion by new species despite large-scale and intense canopy damage.

4. Van Diepen, L. T. A., Frey, S. D., Landis, E. A., Morrison, E. W., Pringle, A. 2017. Fungi exposed to chronic nitrogen enrichment are less able to decay leaf litter. Ecology 98: 5-11.
Associated datasets: HF008, HF218

This post-doc lead study was the first to test if and how fungal behaviors relevant to a critical ecosystem process evolve in response to long-term environmental change. 

5. Thompson, J. R., Lambert, K. F., Foster, D. R., Blumstein, M., Broadbent, B., Almeyda Zambrano, A. 2014. Changes to the Land: Four Scenarios for the Future of the Massachusetts Landscape
Associated datasets: HF245, HF290

The pilot project for the scenario development and modeling approach in LTERV, this report received extensive media coverage, informs policy at the state level, and was published in peer-reviewed journal articles.

6. Duveneck, M. J., Thompson, J. R., Gustafson, E. J., Liang, Y., de Bruijn, A. M. G. 2017. Recovery dynamics and climate change effects to future New England forests. Landscape Ecology 32: 1385-1397.
Associated dataset: HF234

Scaling up to New England using the landscape-ecophysiological model and calibrated with HFR flux-tower data, this post-doc lead study predicted that both climate change and continued recovery from historic broad-scale intensive land-use lead to strong biomass growth over the next century, but that continued recovery dynamics will have larger impacts than climate change on forest composition.

7. Wehr, R., Munger, J. W., McManus, J. B., Nelson, D. D., Zahniser, M. S., Davidson, E. A., Wofsy, S. C., Saleska, S. R. 2016. Seasonality of temperate forest photosynthesis and daytime respiration. Nature 534: 680-683.
Associated datasets: HF004HF209

New isotopic instrumentation at the HFR EMS tower partitioned photosynthesis and respiration, providing the first robust evidence of the inhibition of leaf respiration by light (the Kok effect), and revising our understanding of forest-atmosphere carbon exchange.

8. Keenan, T. F., Gray, J., Friedl, M. A., Toomey, M., Bohrer, G., Hollinger, D. Y., Munger, J. W., O'Keefe, J., Schmid, H. P., Wing, I. S., Yang, B., Richardson, A. D. 2014. Net carbon uptake has increased through warming-induced changes in temperate forest phenology. Nature Climate Change 4: 598-604.
Associated datasets: HF003, HF004

Combining long-term ground observations of phenology, satellite indices, and ecosystem-scale CO2 flux measurements, this post-doc lead study showed a strong trend of earlier spring and later autumn over the past two decades, and enhancement of forest carbon uptake due to changes in phenology.

9.  Foster, D. R., Baiser, B., Barker Plotkin, A., D'Amato, A. W., Ellison, A. M., Orwig, D. A., Oswald, W. W., Thompson, J. R. 2014. Hemlock: A Forest Giant on the Edge. Yale University Press, New Haven, CT.
Associated datasets: HF021HF031HF041HF048HF053HF054HF076HF081HF082HF084HF085HF086

In a narrative that spans millennia of ecological change, the authors explore hemlock forests and the invasive hemlock woolly adelgid that threatens them, and profiles the people and places behind more than a century of Harvard Forest hemlock research.

10. Lovett, G. M., Weiss, M., Liebhold, A. M., Holmes, T. P., Leung, B., Lambert, K. F., Orwig, D. A., Campbell, F. T., Rosenthal, J., McCullough, D. G., Wildova, R., Ayres, M. P., Canham, C. D., Foster, D. R., LaDeau, S. L., Weldy, T. 2016. Nonnative forest insects and pathogens in the United States: Impacts and policy options. Ecological Applications 26: 1437-1455.  
Associated datasets: HF021, HF081, HF082, HF083, HF085, HF104, HF128, HF132

This synthesis showed that imported insect forest pests cause more than $2 billion in damage each year and can be found in all 50 U.S. states, and that current efforts to prevent new pests are not keeping pace with escalating trade. An Associated Press feature was picked up by at least 200 outlets around the country.