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Carbon dioxide concentrations in eutrophic lakes: Undersaturation implies atmospheric uptake

Understanding concentrations and contributions of carbon dioxide (CO2) in aquatic ecosystems is an important part of a comprehensive global carbon budget. Current dogma suggests that world lakes are important emitters of CO2 to the atmosphere. We estimated the partial pressure of carbon dioxide (ρCO2) in 131 agriculturally eutrophic lakes over a 7 year sampling period. Values of ρCO2 in these lakes ranged from 0.1 to 40 392 μatm with a median of 322 μatm (n = 3049). In contrast to previous analyses of CO2 in lakes, 60% of the eutrophic lake samples were undersaturated with CO2.

Changes in shell durability of common marine taxa through the Phanerozoic: Evidence for biological rather than taphonomic drivers

Factors influencing success of marine protected areas in the Visayas, Philippines as related to increasing protected area coverage

Native communities determine the identity of exotic invaders even at scales at which communities are unsaturated

Northern Hemisphere modes of variability and the timing of spring in western North America

Patterns of trait convergence and divergence among native and exotic species in herbaceous plant communities are not modified by nitrogen enrichment

Phylogenetic inference of reciprocal effects between geographic range evolution and diversification

Rapid global expansion of invertebrate fisheries: Trends, drivers, and ecosystem effects

Statistical inference for multi-pathogen systems

The evolution of multi-component visual signals in darters (genus Etheostoma)