I thank Lewis et al. for their letter [1] in response to my recent review article in TREE [2], but argue here that the response of tropical forests to global and regional anthropogenic change, hereafter anthropogenic change, is highly uncertain despite evidence marshaled elsewhere [1,3,4]. Here, I pose six questions to pinpoint sources of this uncertainty. First, are old-growth tropical forests...

A coupled meteorological and chemical modeling system with a 12-km horizontal grid spacing was used to simulate the evolution of ozone over the Great Lakes region between May and September of 1999 and 2001. The overall temporal and spatial variations in hourly ozone concentrations and ozone exposure from control simulations agreed reasonably well with the observations at most locations with an ...

Historical climate simulations of the period 1861–2000 using two new Geophysical Fluid Dynamics Laboratory (GFDL) global climate models (CM2.0 and CM2.1) are compared with observed surface temperatures. All-forcing runs include the effects of changes in well-mixed greenhouse gases, ozone, sulfates, black and organic carbon, volcanic aerosols, solar flux, and land cover. Indirect effects of trop...

Citation: Huang J-J, Huh C-A, Wei K-Y, Löwemark L, Lin S-F, Liao W-H, Yang T-N, Song S-R, Lee M-Y, Su C-C and Lee T-Q (2016) Disentangling Natural and Anthropogenic Signals in Lacustrine Records: An Example from the Ilan Plain, NE Taiwan. Front. Earth Sci. 4:98. doi: 10.3389/feart.2016.00098 Disentangling Natural and Anthropogenic Signals in Lacustrine Records: An Example from the Ilan Plain, N...

Citation: Tilot V, Ormond R, Moreno Navas J and Catalá TS (2018) The Benthic Megafaunal Assemblages of the CCZ (Eastern Pacific) and an Approach to their Management in the Face of Threatened Anthropogenic Impacts. Front. Mar. Sci. 5:7. doi: 10.3389/fmars.2018.00007 The Benthic Megafaunal Assemblages of the CCZ (Eastern Pacific) and an Approach to their Management in the Face of Threatened Anthr...

Citation: Tam JC, Link JS, Large SI, Andrews K, Friedland KD, Gove J, Hazen E, Holsman K, Karnauskas M, Samhouri JF, Shuford R, Tomilieri N and Zador S (2017) Comparing Apples to Oranges: Common Trends and Thresholds in Anthropogenic and Environmental Pressures across Multiple Marine Ecosystems. Front. Mar. Sci. 4:282. doi: 10.3389/fmars.2017.00282 Comparing Apples to Oranges: Common Trends and...

Smoke from wildland fires is one of the sources of atmospheric anthropogenic aerosols. it can dramatically affect regional and global radiative balance. Ross et al. (1998) estimated a direct radiative forcing of nearly -20 ~ m ' for the 1995 Amazonian smoke season (August and September). Penner et al. (1992) indicated that the magnitude of the smoke global radiative forcing is comparable to tha...