Learn how plants respond to higher atmospheric CO2 concentrations

How does rising atmospheric CO2 affect marine organisms?

Click to locate material archived on our website by topic

Lake Caveiro, Pico Island, Azores
Bjorck, S., Rittenour, T., Rosen, P., Franca, Z., Moller, P., Snowball, I., Wastegard, S., Bennike, O. and Kromer, B. 2006. A Holocene lacustrine record in the central North Atlantic: proxies for volcanic activity, short-term NAO mode variability, and long-term precipitation changes. Quaternary Science Reviews 25: 9-32.

General climatic conditions were inferred from "sedimentology, geochemistry, diatom analyses, magnetic properties, and multivariate statistics, together with 14C and 210Pb dating techniques" applied to a core obtained from the center of a small crater lake on the Azores island of Pico (3826'N, 2812'W). The MWP was broadly characterized by the adjoining "cooler/drier periods" of 400-800 and 1300-1800 cal yr BP, but was said by the authors to be most strongly expressed between AD 1000 and 1100, which is where we have located it.