In collaboration with Payame Noor University and Iranian Society of Physiology and Pharmacology

Document Type : Article

Authors

M. A. in Environment Science, Habitats and Biodiversity, Department of Environment and Energy, Science and Research Branch, Islamic Azad University of Tehran, Iran.

Abstract

Abstract
One step in wildlife management is knowing as target population density and that is required cognition of species dispersion pattern in landscape level. In this research, the dispersion and density of brown bear (Ursus arctos syriacus) with use of the Standardized Morisita Index (SMI) and Adaptive cluster sampling (ACS) were determined in Arsanjan County range in Fars province. Field work and cencus of presence signs does with use random sample in 3×3 km cells. Total of sampeling grid in study area include 300 cells. Results SMI showed that dispersion pattern brown bear is clumped and individuals that most aggregationed in koh khom non hunting area. The Results of ACS related to active winter dens showed the brown bear density was 0.031 bear in each cell and 0.0034 bear in kilometer square. Therefor recommendation winter dens are appropriate index in evaluation brown bear population and use in density estimate this species in other areas.

Keywords

REFERENCES
 
Ballard, W.B.; Roney, K.E.; Ayres, L.A.; Larsen, D.A.; (1990). Estimating Grizzly Bear Density in Relation to Development and Exploitation in Northwest Alaska. International Conference on Bear Research and Management; 405-413.
Bellemain, E.; Swenson, J.E.; Tallmon, D.; Brunberg, S.; Taberlet, P.; (2005).         Estimating population size of elusive animals using DNA from hunter-collected faeces: comparing four methods for brown bears. Conservetion Biology; 19(1): 150-161.
Clevenger, A.P.; Purroy, F.J.; (1996). Sign surveys for estimating trend of a remnant brown bear population in northern Spain. Wildlife Biology; 2: 275-281.
Dahle, B.; Swenson, J.E.; (2003). Home ranges in adult Scandinavian brown bears Ursus arctos: effect of mass, sex, reproductive status, population density and habitat type. Journal of Zoology; 260: 329-335.
Dryver, A. L.; Chao, C. T.; (2007). Ratio Estimators in Adaptive Cluster Sampling. Environmetrics; 18: 607-620.
Fahimi, H.; Yusefi, G.H.; Madjdzadeh, S.M.; Damangir, A.A.; Sehhati sabet, M.E.; Khalatbari, L.; (2011). Camera traps reveal use of caves by Asiatic black bears (Ursus thibetanus gedrosianus) (Mammalia: Ursidae) in southeastern Iran. Journal of Natural History, 45: 37-38.
Gutleb, B.; Ziaie, H.; (1999). On the distribution and status of the brown bear Ursus arctos and the Asiatic black bear U. thibetanus in Iran. Zoology in the Middle East; 18: 5-8.
Kendall, K.C.; Metzgar, L.H.; Patterson, D.A.; Steele, B.M.; (1992). Power of sign surveys to monitor population trends. Ecological Applications; 2: 422-430.
Keating, K.A.; Swartz, C.C.; Haroldson, M.A.; Moody, D.; (2002). Estimating numbers of females with cubs-of-the-year in the Yellowstone grizzly bear population. Ursus; 13: 16-174.
Kolstad, M.; Mysterud, I.; Kvam, T.; Sorensen, O.J.; Wikan, S.; (1986). Status of the brown bear in Norway; distribution and population 1978–1982. Biological Conservation; 38: 79-99.
Krebs, C.J.; (1999). Ecological Methodology, 2nd edn. Benjamin/ Cummings, Menlo Park, CA.
Krebs, C.J.; (2001). Ecology: The Experimental Analysis of Distribution andAbundance, 5th edn. Addison-Wesley, San Francisco, CA.
Lorenzini, R.; Posillico,M.; (2000). DNA fingerprinting and brown bear conservation in Abruzzo – central Italy. Italian Journal of Zoology; 67: 326-327.
Sinclair, A.R.E.; Fryxell, J.M.; Caughley, G.; (2006). Wildlife ecology, conservation, and management. 2nd ed. Blackwell Publishing.
Mier, K.L.; Picquelle, S, J.; (2008). Estimating abundance of spatially aggregated populations: comparing adaptive sampling with other survey designs; 64: 176-197
Nezami, B.; Farhadinia, M.S.; (2011). Litter sizes of brown bears in the Central Alborz Protected Area, Iran. Ursus; 22(2): 167-171. (in Persian)
Philippi, T.; (2005). Adaptive cluster sampling for estimation of abundances within local populations of low-abundance plants. Ecology; 85: 1091-1100.
Royle, J.A.; Nichols, J.D.; (2003). Estimating abundance from repeated presence-absence data or point counts. Ecology; 84; 777-790.
Solberg, K.H.; Bellemain, E.; Drageset, O.M.; Taberlet, P.; Swenson, J.E.; (2006). An evaluation of field and non-invasive genetic methods to estimate brown bear (Ursus arctos) population size. Biological Conservation; 128: 158 -168.
Smallwood, K.S.; Schonewald, C.; (1998). Study design and interpretation of mammalian carnivore density estimates. Oecologia; 113: 474-491.
Swenson, J.E.; Wabakken, P.; Sandegren, F.; Bjarvall, A.; Franzen, R.; Soderberg, A.; (1995). The near extinction and recovery of brown bears in Scandinavia in relation to the bear management policies of Norway and Sweden. Wildlife Biology; 1: 11-25.
Thompson, S.K.; (1992). Sampling. Wiley-Interscience, New York.
Thompson, S.K.; (1990). Adaptive Cluster Sampling. Journal of American Statistical Association; 85: 1054-1059.
Zarei, A.; (2012). Den Ecology of  Brown Bear (Ursus arctos) In Koh-Khom Area, Fars Province, WesternSouth of Iran. M.Sc Thesis, Islamic Azad University, Science and Research Campus, Tehran. (in Persian)
Ziaie, H.; (2008). A Field Guide to the Mammals of Iran, second Edition. (in Persian)
Wesley, M.; Hochachka, K.M.; Doyle, F.; Krebs, C.J.; (2000). Monitoring vertebrate populations using observational data. Can. Journal of Zoology; 78: 521-529.
Witmer, G.W.; (2005). Wildlife population monitoring: some practical considerations. USDA National Wildlife Research Center-Staff Publications. Paper 70.