Showing 7 results for Mousavi
H. Akbari, A. Habibipoor, J. Mousavi,
Volume 2, Issue 3 (7-2013)
Abstract
Chinkara is classified as a vulnerable species (IUCN, 2009). Yet, there is a little information on its biological characteristics and habitat in Iran. This study focuses on the habitat preference and social pattern of this species in Dareh-Anjeer wildlife refuge in 2010-2011. We first determined habitat boundaries of Chinkara in the area. During the survey, 15 transects were located within different habitat types and each transect was observed ~10 times annually. We used landform parameters and plant structure for the habitat type layers in Arc GIS software. Then, we mapped the habitat preference of Chinkara using Jacob’s selectivity index. The group size and sex ratio was obtained by the analysis of field notes. Results of the study showed that Chinkara preferred foothills and hilly plains (Jacob’s selectivity index for foothills was estimated 0.31 and for flat plains 0.03). The foothill habitat type covering 25 percent of the Chinkara habitats in the area provides better resources such as cover and water than the other habitat types. Our results suggest that the Chinkara’s activity in summer and autumn is greatest in the early morning. The mean group size of Chinkara in the area is 2.07±0.32 (n=53, SE=1.17), sex ratio (male/female) is 0.52±0.179, and there is no significant difference between the numbers of males and females in the population.
S. H. Mousavi, M. R. Shokri, A. Danehka,
Volume 2, Issue 6 (3-2014)
Abstract
The present study sought to determine the interactions between coral reefs and physicochemical properties of water (depth, temperature, salinity, turbidity, dissolved oxygen, pH, chlorophyll a, and water current velocity) and seabed type and slope in Kish Island, Iran. The study area was divided into 19 zones (eight zones with and 11 without corals). Physicochemical properties of water for each zone were extracted from previous studies over the past years. In summer 2010, field sampling of each zone was also performed using a conductivity, temperature, and depth (CTD) instrument. Non-metric multidimensional scaling (nMDS) and cluster analysis (CA) were then conducted to assess the dispersion of coral reefs and to determine the similarity of coral and non-coral zones, respectively. Finally, the similarity percentage (SIMPER) test was carried out in PRIMER 5 software to identify parameters differentiating coral and non-coral zones. The results of nNMDS analysis revealed differences in spatial distribution of coral and non-coral zones. According to CA results, the coral zone in the north of the island (CR6) and the non-coral zone in the northeast of the island (NC2) were similar in terms of physicochemical properties of water. However, they were significantly different from other coral and non-coral zones (p < 0.01). SIMPER test showed seabed slope, water current velocity, salinity, depth, temperature, and turbidity to have the greatest contributions in the dissimilarity between coral and non-coral zones (25.06%, 23.38%, 13.88%, 13.82%, 8.69% and 8.61%, respectively).
N. Zamani, M. Ghandali, W. Zamani, J. Mousavi, Sh. Karami,
Volume 4, Issue 14 (3-2016)
Abstract
Evaluation of habitat sustainability indexes is essential in wildlife management and conservation of rare species. Suitable habitats are required in wildlife managements and conservation also, they increase reproduction and survival rate of species. In this study in order to mapping habitat sustainability and recognizing habitat requirements of Iranian Cheetah (Acinonyx jubatus venaticus), field data from Dare Anjir wildlife refuge were collected since autumn 2009 until summer 2011. Ecological Niche Factor Analysis approach has been used to develop habitat suitability model. In this method primary maps of habitat variables including elevation, slope, aspect, vegetation cover, distance from water sources and environmental monitoring stations have been produced by Idrisi and Biomapper software and imported in Biomapper. The output scores obtained from the analysis showed that Iranian cheetah tends to mountain areas where has more topographical features for camouflage in order to hunting, and northern aspects which have more humidity, denser vegetation cover and more preys . Our result showed that the Iranian cheetah has medium niche width and prefer marginal habitats.
H. Alimohammadi Sarabi, S. A. Mousavi, S. H. Matinkhah, M. Tarkesh Esfahani,
Volume 6, Issue 1 (6-2017)
Abstract
In order to determine optimum size of rangeland properties, range management units within Margha River area, Izeh, were selected and rangeland parts were separated from other types of land use as the study area. Different ecological and socio-economic criteria were used for calculations. Ecological criteria were adopted from range management plans, including forage production, grazing capacity and rangeland condition and trend. Socio-economic criteria were studied conducting a questionnaire-based survey by 62 questionnaires. Also some data about consumptive costs of households were obtained from the data center of Iran Statistics Center. Relative poverty line was calculated in two situations with /without considering the costs and revenues outside the rangeland. Ignoring the costs and incomes related to non-rangeland sources resulted in the optimal size of utilization units to be 146 animal units of sheep or 186 animal units of goats or 62 and 106 animal units of sheep and goats, respectively. Considering all the costs and incomes resulted in the optimal units to be 140 animal units of sheep or 178 goats or 70 and 89 animal units of sheep and goats, respectively. These results could be utilized for range management plans and policies within similar areas.
E. Baranian Kabir, S. A. R. Mousavi, H. Bashari, M. R. Mosaddeghi, M. Bassiri,
Volume 6, Issue 2 (9-2017)
Abstract
Severe natural resources utilizations, disregarding their real value and environmental potency, pose many hazards in developing countries. Many rangelands have been converted to agricultural fileds to achieve more immediate income. This study, aimed to investigate the economic impacts of converting good and poor rangelands to dry farmlands in terms of soil and water conservation services in Fereidounshar- Isfahan. Hydraulic properties and infiltration status of various land uses were studied using tension infiltrometer. MPSIAC model was also used to estimate soil erosion and sediment yield in the studied area. Economic values of different soil and water conservative services were calculated using Replacement Cost approach. According to the results, good rangeland had the least amount of run off (6.66 mm), erosion (298.14 m3.km-2.year-1) and sediment yield (129.42 ton. km-2.year-1) compared to the other land uses. The economic gains of soil and water conservative services from each hectare of good and poor rangelands compared to dry farmlands were at least more than 20.38 and 13.19 million Rials in a year, respectively, which is equal to economic gains of not converting each hectare of rangelands in a year. Consequntly, in order to manage the lands holistically, based on principles of sustainable development, it is proposed to maintain rangelands.
A. M. Mohamadi, S. A. Mousavi, S. Soltani Koupaei, Gh. H. Kiani,
Volume 10, Issue 2 (9-2021)
Abstract
One of the ways to reduce the improper utilization on natural ecosystems is the economic valuation of ecosystem services and payment to the service providers in exchange, to reduce the causes of degradation. This approach is known as“Payment for Ecosystem Services (PES). In this research, the strategic factor analysis approach was employed to identify strengths, weaknesses, opportunities and threats (SWOT) in rangelands of Chaharmahal and Bakhtiari province. Using a questionnaire and Delphi method, through a survey of 75 experts, the factors were identified. Weighted factors and priority of each factor were determined through multi-criteria entropy decision making method. Results showed that the most important strength is “reduction of grazing intensity by the implementation of PES” with a score of 0.149, the most important weakness is “the lack of monitoring and inspection of grazing capacity with a score of 0.165, the most important opportunity is “improving non-market services of rangeland ecosystem” with a score of 0.145 and the most important threat is “giving preference to the market functions over non-market functions by policymakers” with the score of 0.174. The payment scheme can be a complementary option to reduce grazing intensity if rangers voluntarily reduce their livestock.
M. R. Abolmaali, M. Tarkesh, A. Mousavi, H. R. Karimzadeh, S. Pourmanafi, S. Fakheran,
Volume 12, Issue 1 (5-2023)
Abstract
In order to make decisions for regional planning and achieve sustainable development, it is necessary to quantify land use and land cover changes. In this study, the land use and land cover maps of the Zayandehrood Dam watershed were prepared for the period of 1991 to 2021, using Landsat satellite images, and the changes that occurred in this period were revealed. Using the land change modeler (LCM), land use and land cover and their future changes for 2051 were modeled and predicted. The results showed that in the period between 1991 and 2021, the coverage of poor rangelands with 51,871 hectares of change had the largest decreasing trend, and the agricultural class had the largest increasing trend with 71,478 hectares of change. The largest decline in the period from 2021 to 2051 is related in the coverage of the fair rangelands class with 66192 hectares, and the agricultural class potentially has the largest increasing trend with 70328 hectares of change. The findings of this research will be useful for policymakers and planners. They can use the findings of this study for spatial planning in the region, managing the process of land use and land cover changes for sustainable development.
