Climate and Global Change

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 —>>>

  • Equipment for measuring C02Elevated CO2
    Chesapeake Bay, USA
  • Research Equipment in Hallwylersee, SwitzerlandWarming x Nitrogen
    Hallwylersee, Switzerland
  • Aerial photo of BIOCON at University of MinnesotaCO2 x Nitrogen x Bio
    Minnesota, USA
  • Image of study site in Wyoming, USAWarming x CO2 x Invasion
    Wyoming, USA

Collaborators: Bert Drake, Mark Gessner, Nico Eisenhauer, Elizabeth Borer, Dana Blumenthal

Selected Publications:

2017Hines, J., S. Pabst, K. E. Mueller, S. Cesarz, D. M. Blumenthal, N. Eisenhauer. 2017. Soil-mediated effects of global change on plants communities depend on plant growth form. Ecosphere.
2016Hines, 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 pdf
2016Mueller, 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. pdf
2015Hines, 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 pdf
2014Hines, 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. pdf
2014Schäller, 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. pdf
2013Hines, 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. pdf