Costs of reproduction in circumpolar Parnassia palustris L. in light of global warming
Dividing available resources between reproduction and different somatic processes in organisms is associated to trade-offs in each species life-history. The variability in cost responses in plants has been discussed upon the variability in environmental conditions. We established a field experiment at Sanddalsnuten with the alpine herb, Parnassia palustris L. in focus. The reproductive level was artificially manipulated to determine if there exists cost of reproduction in this species. The field experiments involved manipulations of temperature regime by using open top chambers (OTCs) to simulate a warmer climate, and manipulations of current level of reproductive investment by supplemental hand-pollination (increasing output) and bud removal (decreasing output). Growth, survival, and reproduction was then determined the next year and compared inside and outside the OTCs.
Project period: 2003 - 2009Project leader:
Sylvi M. Sandvik, University of Agder
Study area at Sandalsnuten
Study species: Parnassia palustris
Sandvik, S. M. & Eide, W. (2009) Costs of reproduction in circumpolar Parnassia palustris L. in light of global warming. Plant Ecology,205, 1-11.