Farhad Hosseini Tayefeh; Bagher Nezami Baloochi; Mona Izadian
Abstract
Introduction: The Persian Wild Ass Equus hemionus onager is the only odd-toed ungulates (Perissodactyla) and largest wild herbivore in Iran, with a population of about 1300 individuals, distributed in the Bahram-e Gur conservation complex and Touran Biosphere Reserve. From the semi-captive reproduction ...
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Introduction: The Persian Wild Ass Equus hemionus onager is the only odd-toed ungulates (Perissodactyla) and largest wild herbivore in Iran, with a population of about 1300 individuals, distributed in the Bahram-e Gur conservation complex and Touran Biosphere Reserve. From the semi-captive reproduction and reintroduction centers, they had population growth in the centers of Yazd province and Kavir National Park. In other centers were not successful due to not considering demographic factors such as the age and sex composition of the founder population, intra- and inter-species competition, lack of information on genetic status and inbreeding and management factors such as hard release. In this study, the threats of the Persian Wild Ass in natural habitats, the state of reproduction and reintroduction centers, and management and conservation strategies have been discussed.Materials and Methods: Scientific sources, reports and documents available in the Semnan, Yazd, Fars and Kerman Provincial Office and the Wildlife conservation and Management bureau of the Department of the Environmental were studied regarding the threats, past and present population and fatalities of the Persian Wild Ass. Data collection was done by interviewing environmentalists, experts and completing species information forms including population, threats and expert suggestions of the respective provinces. Based on the field visits and investigation of natural habitats and reproduction and reintroduction centers in Fars and Semnan provinces, information was verified.Results: Over the past two decades, the population of the species has been growing in the Bahram-e Gur conservation complex, due to habitat management and the reduction of threats. While the species' population status in the Touran biosphere reserve has experienced a sharp decline since the 1970s and 1980s, and this trend has been almost stable for the past 20 years. The most important threats to the Persian Wild Ass due to human activities include destruction and fragmentation of habitats, poaching for meat, inbreeding, the occurrence of diseases in natural populations, seasonal use of vegetation, road kills, development of mines, drought, and climate change. Overgrazing by livestock reduces food availability, and also reduces the availability of water at springs. In semi-captive breeding and re-introduction centers, the lack of knowledge of the genetic status of populations, the very low growth rate, and infanticide are among the threats to the species. Management problems such as non-continuity of providing financial resources and equipment, lack of sustainable management with the passage of time, hard release due to lack of funds, equipment, and also non-observance of the gender ratio of the founding population can be effective in the failure of these centers.Discussion: The important strategies for conserving the Persian Wild Ass in the short- and long-term include identifying the threats and introducing methods to reduce the effect of the threat, developing a comprehensive plan for reproduction and reintroduction of the species, and implementing the action plan for the conservation of the population in the habitats. The implementation of participatory conservation programs with the key stakeholders can be effective in the conservation programs.
Seyed Ghasem Ghorbanzadeh Zaferani; Seyed Keramat Hashemi ana; amin ahmadi gaevi; Mehdi blouki; mohammad amin tolab; Ardavan Zarandian; Farhad Tayefeh
Abstract
Introduction: Considering the importance of corals in different dimensions of human life, their investigation and study will become more necessary. Kharg and Khargo islands are very important from the point of view of the environment, especially the unique coral covers. In the past few decades, many ...
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Introduction: Considering the importance of corals in different dimensions of human life, their investigation and study will become more necessary. Kharg and Khargo islands are very important from the point of view of the environment, especially the unique coral covers. In the past few decades, many potential threats such as destructive human activities related to the oil industry and the resulting wastes in coastal environments, oil and hydrocarbon pollution, industrial and urban pollution, air pollution, discharge of municipal effluents and sewage, thermal stresses caused by changes Climatic and fluctuating middle and upper water levels, fishing with nets by fishermen and hunting fish by divers in coral areas, as well as carelessness of divers, have faced many challenges in coral habitats. One of the activities that is in relative conflict with the ecosystem of Khark Island and especially the location of the coral beaches, is the activities and movements related to fishing in Khark and Khargo Island. These activities date back several decades. Extreme poverty in many areas has caused a large number of people to go fishing. Therefore, the purpose of this study is to examine the various aspects of the fishing challenge that threatens the geographical territory of coral reefs. The aim of this study is to emphasize the investigation of human-environmental challenges.
Materials and Methods: In this research, for evaluate and investigate the threats created in the geographical area the first step we investigated the challenges of fishing activity of Khark Island. Then these challenges were classified and finally analyzed and investigated the contribution of each of its aspects in the fishing communities near the coral habitat of Kharg and Khargo islands. In order to investigate fishing and fishing challenges, using the statistical method of Cronbach’s alpha analysis and Likert scale. For trust final results and analyzes must the confidence percentage was calculated and confirmed. The weights of each of the criteria were finalized by the SWARA fuzzy-numerical test. In this questionnaire, there are 21 questions and Cronbach’s alpha is at an acceptable and good level of 0.72.
Results: In the questionnaire of this research, there are 21 questions and the Cronbach's alpha level is at an acceptable and good level of 0.72. It was found that trust in the content of the questionnaire confirms. The effectiveness and weight of each of the criteria showed that the highest percentage of fishing is done by motor boats in the winter season and early in the morning (93%). The results showed that more than 85% of fishermen have not received any necessary training for fishing in coral areas, and this challenge is considered serious and fundamental. The results showed that more than 85% of fishermen have not received any necessary training for fishing in coral areas, and this challenge is considered serious and fundamental.
Discussion: The output indicates that the fishing tool is valued as a criterion with the first rank, in other words, it explains 31% of the weight of the items. On the other hand, fishing time has the lowest weight in the criteria definition with 23%. These statistical processes show that human-environmental factors should be prioritized in examining the challenges and threats of the coral reef in Khark Island. In other words, the control and management of man-made challenges and related factors can create safe coral environments.
Seyed Ghasem Ghorbanzadeh Zaferani; Farhad Hosseini Tayefeh; Mona Izadian
Abstract
Introduction: The study of the structure of aquatic communities in aquatic ecosystems has a special place in the ecological studies of aquatic organisms. Among the important and common macrobenthic indices, we can mention uni- variate and multi-variate ecological indices, which having different advantages ...
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Introduction: The study of the structure of aquatic communities in aquatic ecosystems has a special place in the ecological studies of aquatic organisms. Among the important and common macrobenthic indices, we can mention uni- variate and multi-variate ecological indices, which having different advantages and disadvantages, are still used in various studies in riverian waters. In recent years, studies using biodiversity index and bioindices, especially the Helsinhof index, were used to assessment of the water quality of the Karaj River. Assuming that there is agreement between the ecological indices of the region, the present study evaluated the degree of agreement between the quality statuses results obtained from different ecological indices in the Karaj River.
Materials and Methods: In this study, we sampled macrobenthic fauna using a sorber sampler in nine stations during 2017-2018, seasonally. After separating and identifying macrobenthos, Shannon's index, EPT, ASPT, BMWP and HFBI were calculated. Then the ecological status of the stations was classified based on these indices. The percentage of stations whose ecological status was acceptable or unacceptable, as well as the compatibility level between these five indices in the study area, were calculated. To determine the similar tendency of the different indices in the classification of stations, the degree of correlation between them was determined using a non-parametric test. SPSS23 and Excel software were used for statistical analysis and Primer6 was used to determine biodiversity index. Shapiro-Wilk test was used to check the normal distribution of the data. In order to determine the significant difference between the desired data, one-way ANOVA and Kruskal-Wallis tests were used at the significance level of p<0.05. ArcGIS 10.3 and Terrset 17.3 software were used to prepare maps using the IDW method.
Results: In terms of abundance, the Shironomide family was dominant. Baetis, Tubifex, Micrasema, Rhithrogena, Eporus, Hydropsyche, Leptophlebiidae, and Simulium made up 83% of the samples. The values of H', EPT, ASPT, BMWP and HFBI were calculated (12.2±0.65), (5.6±2.8), (3.9±1), (48.8±23.34) and (4.6±1), respectively. The relative agreement in the results obtained from the five studied indices was seen in 67% of the stations with unacceptable quality in the case that 22% of the river stations showed complete agreement and 11% of the stations showed disagreement. The statistical analysis shows that there is a significant agreement between the results of the ecological status obtained from EPT with ASPT, BMWP and Shannon, if they are different with HFBI index. Also, based on the results of the correlation between the classification of the ecological quality obtained from the bioindices (positive and strong correlation between the EPT and the Shannon and BMWP), it indicates the similar direction of these indices in the classification of the stations.
Discussion: There are structural and population changes of macrobenthos in aquatic ecosystems due to natural factors and human activities. Due to the lack of complete agreement between the assessment results of the five indices in this study, in order to use biological indices in each region for environmental management, there is a need to simultaneously use indices. Also, it is important to check the agreement between different indices and choose the appropriate ecological index. As a result, using each of these indices alone and without considering the above considerations can lead to wrong results. Based on the results of the present study, the Helsinhof index (HFBI) can be introduced as a more suitable index than other studied indices to assess the ecological status of the Karaj River.
Wild Life
Maryam Mahmoudiasl; Farhad Hosseini Tayefeh; Bagher Nezami
Abstract
Cheetah is the only species from the Acinonyx subfamily and genus whose global population trend has been declining. This species is known as a species with a low genetic variation that has resulted from bottlenecks about 10,000 and 12,000 years ago. All populations of the Asiatic cheetah subspecies are ...
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Cheetah is the only species from the Acinonyx subfamily and genus whose global population trend has been declining. This species is known as a species with a low genetic variation that has resulted from bottlenecks about 10,000 and 12,000 years ago. All populations of the Asiatic cheetah subspecies are extinct in the Middle East and Southwest of Asia and Iran. Asiatic cheetah subspecies listed in the Critically Endangered because of severe decline in the gene diversity level which has resulted from habitat degradation, geographical separation of populations, and increasing inbreeding, there are only a few of the species remained in the wild of Iran. In this review study, the genetic variation reduction at different levels of Allozymes molecular markers, microsatellites, mitochondrial DNA, and Single Nucleotide Polymorphism in the entire cheetah genome was investigated and validated. Studies based on restriction fragment length polymorphism, indicate severe genomic reductions in the occurrence of Single Nucleotide Variant, the density of Single Nucleotide Variant, Single Nucleotide Variants protein-coding genes, Major Histocompatibility Complex genes, and mitochondrial DNA Single Nucleotide Variant compared with other species. Significant reductions in overall genetic variation by multiple genomic markers lead to increased cubs’ mortality, severe abnormalities in sperm growth, problems with captive reproduction programs, and increased vulnerability to the spread of infectious diseases. Since conservation genetics plays a key role in the conservation and management of species, the results of this study can be used in genetic conservation, reproduction in captivity, and the management of the remaining populations of Asian cheetahs.
Biodiversity & Biosafety
Jalil Badam Firouz; Mona Izadian; Farhad Hosseini Tayefeh
Abstract
The Cartagena Protocol was adopted to achieve a common and coordinated solution for the transboundary movement of transgenic organisms, establish confidence and legitimacy in the field of biosafety regulations in the world, and increase global coordination. Under Clause 2 of Article 23 of the Protocol, ...
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The Cartagena Protocol was adopted to achieve a common and coordinated solution for the transboundary movement of transgenic organisms, establish confidence and legitimacy in the field of biosafety regulations in the world, and increase global coordination. Under Clause 2 of Article 23 of the Protocol, States Parties are required to consult with the public and public institutions on the decision-making and policy-making of genetically modified species and to make the results of such consultations available to the public. In recent years, transgenic products have entered the diet of the Iranian people, but there has made no proper awareness about their benefits or harms for the people. Since the genetic structure of transgenic plants is altered through genetic engineering, and this change is usually done to improve the plant's resistance to certain pests or plant diseases, there is concern that these plants have also become resistant to drugs and cause abnormalities and the spread of diseases in humans. The Cartagena Protocol emphasizes the need for labeling, but despite the use of transgenic products in Iran, labeling and percentaging have not been done on all products and it is necessary to pay special attention to the implementation of the latest regulation of the Food and Drug Administration regarding transgenic events.