Most ecosystems worldwide are facing unprecedented pressure from abiotic and biotic stressors such as elevated atmospheric CO2, climate warming, increased nitrogen deposition, and invasion of non-native species. Numerous short-term studies have shown the impact of single climate change factors on focal species, but extending these results to predict real world consequences of climate change remains contentious. I use two complementary approaches to understand the broad-scale and long-term impact of climate stressors on naturally complex ecosystems.
First, I conduct surveys using field sampling and spatially explicit literature reviews to determine how food web structure and species traits change across natural climate gradients. Second, I conduct experimental climate manipulations in the field to determine the sensitivity of species interactions and ecosystem processes to changes in climate.
Increasing Complexity —>>>
Collaborators: Bert Drake, Mark Gessner, Nico Eisenhauer, Elizabeth Borer, Dana Blumenthal
|2016||Hines, J.E., M. Reyes, M.O. Gessner. 2016. Density constrains cascading consequences of warming and nitrogen from invertebrate growth to litter decomposition. Ecology 97: 1635-1642|
|2016||Mueller, K., D. M. Blumenthal, Y. Carrillo, S. Cesarz, M. Ciobanu, J. Hines, S. Pabst, E. Pendall, C. Milano de Tomasel, D. H. Wall, N. Eisenhauer. 2016. Elevated CO2 and warming shift the functional composition of soil nematode communities in a semiarid grassland. Soil Biology and Biochemistry 103: 46-51.|
|2015||Hines, J., N. Eisenhauer, B. Drake. 2015. Inter-annual changes in detritus-based food chains can enhance plant growth response to elevated atmospheric CO2. Global Change Biology 21: 4642-4650|
|2014||Hines, J.E., M. Reyes, T. Mozdzer, M.O. Gessner. 2014. Genotypic trait variation modifies effects of climate warming and nitrogen deposition on litter mass loss and microbial respiration. Global Change Biology 20: 3780–3789.|
|2014||Schäller, J., J.E. Hines, C. Brackhage, E. Bäucker, and M.O. Gessner. 2014. Silica supply decouples fungal growth and litter mass loss but does not change responses of decomposition to climate warming and N enrichment. Ecology 95: 3181–3189.|
|2013||Hines, J.E., A. Hammrich, D. Steiner, and M.O. Gessner. 2013. A field facility to simulate climate warming and increased nutrient supply in shallow aquatic ecosystems. Oecologia: 173:1169-1178.|