Evolutionary history underlies plant physiological responses to global change since the last glacial maximum

Citations Over TimeTop 10% of 2014 papers

Abstract

Assessing family- and species-level variation in physiological responses to global change across geologic time is critical for understanding factors that underlie changes in species distributions and community composition. Here, we used stable carbon isotopes, leaf nitrogen content and stomatal measurements to assess changes in leaf-level physiology in a mixed conifer community that underwent significant changes in composition since the last glacial maximum (LGM) (21 kyr BP). Our results indicate that most plant taxa decreased stomatal conductance and/or maximum photosynthetic capacity in response to changing conditions since the LGM. However, plant families and species differed in the timing and magnitude of these physiological responses, and responses were more similar within families than within co-occurring species assemblages. This suggests that adaptation at the level of leaf physiology may not be the main determinant of shifts in community composition, and that plant evolutionary history may drive physiological adaptation to global change over recent geologic time.

Related Papers

• → Two types of global environmental change(1990)323 cited
• → Why is plant-growth response to elevated CO2 amplified when water is limiting, but reduced when nitrogen is limiting? A growth-optimisation hypothesis(2008)156 cited
• → Stomatal Conductance and ABA Concentration in the Xylem Sap of Barley Lines of Contrasting Genetic Origins(1997)52 cited
• STRENGTHENING THE STUDY OF LAND USE/COVER CHANGE AND ITS IMPACT ON ECO-ENVIRONMENTAL SECURITY--The Trend of the Study of the Dynamics of Human-Nature System Based on "Global Change Open Science Conference 2001" in Amsterdam, Netherlands(2002)
• The new content and trend of global change research(2002)