Latitudinal gradients in phosphorus and vegetation biomass for Sweden and Denmark

FROM: Seekel, D., J.-F. Lapierre, and K.S. Cheruvelil. 2018. A geography of lake carbon cycling. Forthcoming in Limnology &amp; Oceanography Letters. These data were combined for a figure depicting strong latitudinal gradients in phosphorus fertilizer and manure application and aboveground vegetation biomass for Sweden and Denmark. An intersection between human and natural gradients can lead to cross-regional contrasts in energy and mass transfer to lakes and explain the presence of thresholds in lake C cycling. Data were averaged within latitudinal bands for the extent of Sweden and Denmark and plotted as splines to emphasize the overall patterns. Data sources are: Cheruvelil, K.S. J.-F. Lapierre, and D. Seekell. 2017. Latitudinal gradients in phosphorus and vegetation biomass for Sweden and Denmark. DOI: 10.6084/m9.figshare.5614588; Potter, P., N. Ramankutty, E.M. Bennett, and S.D. Donner. 2010. Characterizing the Spatial Patterns of Global Fertilizer Application and Manure Production. Earth Interactions 14 (2): 1-22. http://dx.doi.org/10.1175/2009EI288.1; and Ruesch, Aaron, and Holly K. Gibbs. 2008. New IPCC Tier-1 Global Biomass Carbon Map For the Year 2000. Available online from the Carbon Dioxide Information Analysis Center <i>[</i><i>http://cdiac.ess-dive.lbl.gov</i><i>]</i>, Oak Ridge National Laboratory, Oak Ridge, Tennessee.