fatemeh bahadoriamjaz; Maryam Morovati; Mina Behnood
Abstract
Today, the migration and movement of organisms among patches has been considered to prevent habitat isolation. The purpose of this study is to identify suitable habitats for Capra aegagrus species in Dareh Anjir Wildlife Refuge and Kuh-e-Bafq Protected Area and connecting these two habitats. In this ...
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Today, the migration and movement of organisms among patches has been considered to prevent habitat isolation. The purpose of this study is to identify suitable habitats for Capra aegagrus species in Dareh Anjir Wildlife Refuge and Kuh-e-Bafq Protected Area and connecting these two habitats. In this study, the maximum entropy algorithm and the least cost method were used to evaluate habitat suitability and design the corridor of Capra aegagrus species respectively. For this purpose, at first, species presence data along with eight environmental variables (direction, height, plant density, distance from the river, distance from the road, slope, vegetation and distance from the village) were entered into Maxent software and The utility map was prepared, Then the resistance map and the cumulative cost layer were prepared in Arc GIS10.1. Finaly Corridor command was used to plot the corridor using Arc GIS10.1 software in Spatial Analyst tools Distance. The results of the Maxent model showed Jack Nayef analysis, the most important factor in scattering of Capra aegagrus in the study area is the slope variable. In the ROC chart, The AUC value of the training data was 0.961, which indicates that the high detection power of the model (separation of presence and absence of species) is Excellent. Also the results of the least cost method showed that of the ten corridors plotted, none of the corridors interconnects the two zones. Therefore, in order to prevent the isolation of habitats, it is necessary to take appropriate management practices and create suitable conditions for the species between these two areas, because the connection between habitats is needed to protect and manage natural ecosystems.
maryam morovati; Zahrasadat Hoseini; Fatemeh Bahadori Amjas
Abstract
Abstract
This study was done with the aim of evaluating the Iranian Gazella’s habitat in Kalmand Bahadoran protected area with multi-criteria evaluation model (MCE). The habitat variables used in the modeling were including: slope, geographic orientation, height, density and flora, water resources, ...
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Abstract
This study was done with the aim of evaluating the Iranian Gazella’s habitat in Kalmand Bahadoran protected area with multi-criteria evaluation model (MCE). The habitat variables used in the modeling were including: slope, geographic orientation, height, density and flora, water resources, agricultural fields and human habitats. At the first, the variables was prepared for modeling in the IDRISI software 17 version. Then the limitation layers for the Iranian Gazella habitat include slope of more than 10%, height greater than 1600 m, a 100-meter privacy of Human habitats, 500 meters from main roads, 5 kilometers from agricultural fields, 10 kilometers from water resources, achieved with the Bolin algorithm in IDRISI software. Also to determine the weight of each variables, the hierarchical method was used in Idrisi software (IDRISI). The results of variables ranking showed that among used variables, the road variable had the highest weight and the height variable had the lowest. The results of the desirability level assessment in the Kalmand and Bahadoran region showed that the highest level of the region (56.01%), for Iranian Gazella, has moderate utility. Therefore, it can be stated that the Calmand Bahador region is a Gazella area and is relatively good habitat for this species which can improve the desirability level of habitat in the region by managing and planning. The results of this study can be used in implementing conservation and management measures to increase the desirable habitats in Yazd province.
