Identifying indicator plants and their importance for expressing Populus caspica habitats in hyrcanian forests
Subject Areas : forestmohammadreza nazari 1 , hasan nazari 2
1 - دانش آوخته کارشناسی ارشد دانشگاه تهران گروه منابع طبیعی کرج ایران
2 - دانشجوی دکترای جنگلداری دانشگاه علوم کشاورزی و منابع طبیعی گروه جنگلداری ساری ایران
Keywords: Populus Caspica, Indicator plant, Destruction,
Abstract :
Indicator plants are the easiest instrument to understanding ecological conditions in Environment. This research investigates indicator plants species in six natural site of endangered species Populus caspica Bornm. In three Northern provinces of Iran with two goals; evaluate the current status of these habitats and indicator plant performance in the expression present status in habitats. Sampling was preformed systematic randomly with 100*150(m) sampling network and sample plot with an area of 400 m2 (20*20) and 9 microplot with an area of 4 m2 (2*2). Floristic list of all plant species were provided and Indicator plants species were identified with referring to the valid research and studies. Fundamental climate parameters (mean annual precipitation, annual temperature, etc. ...) and habitat characteristics (soil, destruction) were evaluated to assess Reagent indicator plants. According to the results, representing a total of 43 species was identified. There destroyed indicator plants, indicator plants of alkaline and poor acidity soil and Wetland Indicator plants are most striking feature of Populus caspica habitats. Humid and semi-humid climate, calcareous soil and widespread destruction were the most striking features of this endangered species site in Hyrcanian forest. Overall results of this study confirm the efficiency of valuable Indicator plants in the expression ecological conditions of habitats showed necessity of applying Indicator plants in biological resources management and advises considering the most effective and efficient arrangements ex situ and in situ management to restore and preserve these archaeological and endangered species sites.
Refernces:
1 Marvi mohager,M.r,1384, Forest science and silviculture.tehran university publications, Tehran, iran
2 Mossadegh , a. , 1383. Silviculture . Tehran University publication, Tehran ..
3 Bazzaz, F. A., 1996. Plants in Changing Environments-Linking Physiological, Population and Community Ecology. Cambridge University Press, Cambridge.
4 Bouyoucos, C .J., 1962. Hydrometer method for making particle size analisis of soil. Agronomy journal 54: 464-465.
5 Chapin, F.S., Bret-Harte, M. S., Hobbie, S.E. & H. Zhong, 1996. Plant functional types as predictors of transient responses of arctic vegetation to global change. Journal. Vegetation. Science 7: 347–358.
6 Dale, M. R. T., 1999. Spatial Pattern Analysis in Plant Ecology. Cambridge University Press, Cambridge.
7 Cousins, S.A.O. & R. Lindborg, 2004. Assessing changes in plant distribution patterns - indicator species vs. plant functional types. Ecological indicators 4:17-27.
8 Diaz, S., Noy-Meir, I. & M. Cabido, 2001. Can grazing response of herbaceous plants be predicted from simple vegetative traits. Journal Apply Ecology 38: 497–508.
9 Godefroid, S. & N. Koedam, 2004. Interspecific variation in soil compaction sensitivity among forest floor species. Biological conservation 119: 207-217.
10 Hall, H.M. & J. Grinnell, 1919. Life-zone indicators in California. California Academy Science. California.
11 Haragan, P.D., 1991. Weeds of Kentucky and adjacent states: a field guide. The University Press of Kentucky. Lexington, Kentucky.
12 Lawton, J.H. & K. J. Gaston, 2001. Indicator species, Encyclopedia of Biodiversity. Academic Press, New York.
13 Jacson, M.L., 1962. Soil chemical analysis. Constable and company, London.
14 Jalili, A. & Z. Jamzad, 2000. Red Data Book of Iran. Iranian Research Institute of Forest and Rangeland, Tehran.
15 Lindenmayer, D.B., Margules, C. R. & D. Botkin, 2000. Indicators of Forest sustainability biodiversity: the selection of forest indicator species. Conservation. Biology 14: 941–950.
16 Newton, A.C., Allnutt, T.R., Gillies, A.C.M., Lowe, A.J. & R.A. Ennos, 1999. Molecular phylogeography, intraspecific variation and the conservation of tree species. Trends in Ecology and Evolution 14: 140–145.
17 Prach, K., 1997. Changes in species traits during succession: a search for pattern. Oikos 79: 201–205.
18 Scheller, R.M. & D. J. Mladenoff, 2002. Understorey species patterns in old growth and managed northern hardwood forests. Ecological applications 12: 1329–1343.
19 Uva, R.H., Neal, J.C. & J.M. Ditomaso, 1997. Weeds of the Northeast. Cornell University Press, New York.
20 Vesk, P.A. & M. Westoby, 2001. Predicting plant species’ responses to grazing. Journal Apply Ecology, 38: 897–909.
