Published date: Oct 29 2018

Journal Title: KnE Life Sciences

Issue title: The Fourth International Scientific Conference Ecology and Geography of Plants and Plant Communities

Pages: 64–71

DOI: 10.18502/kls.v4i7.3221

L A Ivanovleonid.ivanov@botgard.uran.ru

L A Ivanova

D A Ronzhina

P K Yudina

Т Shinehuu

G Tserenhand

S N Bazha

P D Gunin

Global climate change and grazing are the key factors affecting plant productivity in steppe regions of Mongolia. It is important to separate the impacts of these factors and to assess the contribution of each factor to the biomass of pastoral plants. Here, we studied the grazing and climate impact on biomass and functional traits in three dominant species of Mongolian steppe plant communities: Artemisia frigida Willd., Stipa krylovii Roshev., and Kochia prostrata (L.) Schrad. Both aridity and grazing significantly influenced the biomass of the studied species but the direction and scope of the changes were species-specific. Grazing had no effect on leaf mass per area (LMA), photosynthesis (A

[1] Gunin, P. D., Bazha, S. N., Danzhalova, E. V., et al. (2015). Regional features of desertification processes of ecosystems on the border of the Baikal Basin and Central Asian Internal Drainage Basin. Arid Ecosystems, vol. 5, no. 3, pp. 117–133.


[2] Xie, L.-N., Guo, H.-Y., Chen, W.-Z., et al. (2018). Effects of grazing on population growth characteristics of Caragana stenophylla along a climatic aridity gradient. Rangeland Ecology & Management, vol. 71, no. 1, pp. 98–105.


[3] Reich, P. B., Wright, I., Cavender-Bares, J., et al. (2003). The evolution of plant functional variation: Traits, spectra, and strategies. International Journal of Plant Sciences, vol. 164, pp. 143–164.


[4] Asner, G. P., Elmore, A. J., Olander, L. P., et al. (2004). Grazing systems, ecosystem responses, and global change. Annual Review of Environment and Resources, vol. 29, pp. 261–299.


[5] Havstad, K. M., Herrick, J. E., and Tseelei, E. (2008). Mongolia’s rangelands: Is livestock production the key to the future? Frontiers in Ecology and the Environment, vol. 6, pp. 386–391.


[6] Hunt, L. P. (2010). Spatial variation in the demography and population dynamics of a perennial shrub (Atriplex vesicaria) under sheep grazing in semi-arid Australian rangelands. Austral Ecology, vol. 35, pp. 794–805.


[7] Matsuura, K. and Willmott, C. J. (2012). Terrestrial Air Temperature: 1900–2010 Gridded Monthly Time Series. Retrieved from http://climate.geog.udel.edu/$\sim$climate/ html_pages/Global2011/README.GlobalTsT2011.html


[8] Matsuura, K. and Willmott, C. J. (2012). Terrestrial Precipitation: 1900–2010 Gridded Monthly Time Series. Retrieved from http://climate.geog.udel.edu/$\sim$climate/ html_pages/Global2011/Precip_revised_3.02/README.GlobalTsP2011.html


[9] Huntly, N. (1991). Herbivores and the dynamics of communities and ecosystems. Annual Review of Ecology and Systematics, vol. 22, pp. 477–503.


[10] Wang, J., Zhong, M., Wu, R., et al. (2016). Response of plant functional traits to grazing for three dominant species in alpine steppe habitat of the Qinghai–Tibet Plateau, China. Ecological Research, vol. 31, no. 4, pp. 515–524


[11] Black, C. C. (1971). Ecological implications of dividing plants into groups with distinct photosynthetic production capacity. Advances in Ecological Research, vol. 7, pp. 87– 114.


[12] Black, C. C. (1973). Photosynthetic carbon fixation in relation to net CO2 uptake. Annual Review of Plant Physiology, vol. 24, pp. 253–286.


[13] Ehleringer, J. R. (1978). Implications of quantum yield differences to the distributions of C3 and C4 grasses. Oecologia, vol. 31, pp. 255–267.


[14] Ehleringer, J. R., Cerling, T. E., and Helliker, B. R. (1997). C4 photosynthesis, atmospheric CO2 , and climate. Oecologia, vol. 112, pp. 285–299.


[15] Pyankov, V. I., Gunin, P. D., S. Tsoog, et al. (2000). C4 plants in the vegetation of Mongolia: Their natural occurrence and geographical distribution in relation to climate. Oecologia, vol. 123, pp. 1–31.


[16] Lambers, H., Chapin F. S., III, and Pons, T. L. (1998). Plant Physiological Ecology. New York, NY: Springer-Verlag.