COMPARISON OF NUMERICAL DIVERSITY INDICES IN THE TWO DIFFERENTLY GRAZED SITES IN TOROGH BASIN, MASHHAD, IRAN

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EJTEHADI H.; GHOREYSHI ALHOSSEINI J.; AKKAFI H.R.

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Journal: IRANIAN JOURNAL OF BIOLOGY Year:2003 | Volume:13 | Issue:3-4 Page(s): 49-58

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Title

COMPARISON OF NUMERICAL DIVERSITY INDICES IN THE TWO DIFFERENTLY GRAZED SITES IN TOROGH BASIN, MASHHAD, IRAN

Author(s)

EJTEHADI H. | GHOREYSHI ALHOSSEINI J. | AKKAFI H.R. | Issue Writer Certificate

Keywords

NUMERICAL INDICESQ3

SPECIES DIVERSITYQ2

SPECIES RICHNESSQ2

EVENNESSQ3

GRAZINGQ2

TOROGH BASINQ4

Abstract

Rangelands have long been of consideration and exploitation for human beings in economic, medicine, industries and high genetic stores. Physical disturbances such as GRAZING by domestic animals could affect diversity components. This research was carried out in the two differently grazed sites (grazed and ungrazed) in TOROGH BASIN, south of Mashhad to determine and compare piant diversity of the two sites. Considering cumulative diversity curve of Brillouin and the minimal area, about 228 and 233 1m2 quadrats were established in grazed and ungrazed sites, respectively. Floristic composition along with canopy cover and abundance of each species were recorded in the quadrats. The data were subject to Diver and Nucosa program packages to calulate NUMERICAL INDICES such as SPECIES RICHNESS, diversity and EVENNESS. The total number of 163 plant species, 93 in ungrazed and 70 in grazed site, belonging to 38 families were recorded in the area. The most important farriilies were Asteraceae, Fabaceae, Lamiaceae, Poaceae, Brassicaceae, Apiaceae, Caryophyllaceae, Boraginaceae and Rosaceae with 29, 22, 14, 14, 13, 10, 7, 5 and 5 plant species, respectively. Data analyses revealed the more diversity in ungrazed site that in grazed site based on the different indices of richness, diversity and EVENNESS. In the grazed site, some species with high forage values became less abundant and even disappeared. There was significant difference based on t-test between values of the two sites measured by the Shannon index.

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APA: Copy

EJTEHADI, H., GHOREYSHI ALHOSSEINI, J., & AKKAFI, H.R.. (2003). COMPARISON OF NUMERICAL DIVERSITY INDICES IN THE TWO DIFFERENTLY GRAZED SITES IN TOROGH BASIN, MASHHAD, IRAN. IRANIAN JOURNAL OF BIOLOGY, 13(3-4), 49-58. SID. https://sid.ir/paper/21220/en

Vancouver: Copy

EJTEHADI H., GHOREYSHI ALHOSSEINI J., AKKAFI H.R.. COMPARISON OF NUMERICAL DIVERSITY INDICES IN THE TWO DIFFERENTLY GRAZED SITES IN TOROGH BASIN, MASHHAD, IRAN. IRANIAN JOURNAL OF BIOLOGY[Internet]. 2003;13(3-4):49-58. Available from: https://sid.ir/paper/21220/en

IEEE: Copy

H. EJTEHADI, J. GHOREYSHI ALHOSSEINI, and H.R. AKKAFI, “COMPARISON OF NUMERICAL DIVERSITY INDICES IN THE TWO DIFFERENTLY GRAZED SITES IN TOROGH BASIN, MASHHAD, IRAN,” IRANIAN JOURNAL OF BIOLOGY, vol. 13, no. 3-4, pp. 49–58, 2003, [Online]. Available: https://sid.ir/paper/21220/en

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