Mohammad Farzam

Mohammad Farzam
Ferdowsi University Of Mashhad | FUM · Department of Rangeland Management

PhD

About

60
Publications
19,966
Reads
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2,570
Citations
Additional affiliations
July 2006 - present
Ferdowsi University Of Mashhad
Position
  • Lecturure
September 2002 - June 2005
Yazd University
Position
  • Professor (Assistant)

Publications

Publications (60)
Article
Full-text available
Climate and soil factors induce substantial controls over plant biodiversity in stressful ecosystems. Despite of some studies on plant biodiversity in extreme ecosystems including rocky outcrops, simultaneous effects of climate and soil factors have rarely been studied on different facets of biodiversity including taxonomic and functional diversity...
Article
Full-text available
Restoration of degraded environments is essential to mitigate adverse impacts of human activities on ecosystems. Plant-plant interactions may provide effective means for restoring degraded arid lands, but little is understood about these impacts. In this regard, we analyzed the effects of two dominant nurse plants (i.e., Artemisia sieberi and Stipa...
Article
Full-text available
Abstract Aim Plant–plant interactions are an important factor in structuring plant biodiversity. However, most studies on the impacts of plant–plant interactions on biodiversity focus on species richness and to a lesser extent on other facets of diversity. When other facets of biodiversity are considered, studies often include a limited set of envi...
Article
Full-text available
The interspecific plant interactions along grazing and aridity stress gradients represent a major research issue in plant ecology. However, the combined effects of these two factors on plant-plant interactions have been poorly studied in the northeast of Iran. To fill this knowledge gap, 144 plots were established in 12 study sites with different g...
Article
Full-text available
Aims Understanding fine-grain diversity patterns across large spatial extents is fundamental for macroecological research and biodiversity conservation. Using the GrassPlot database, we provide benchmarks of fine-grain richness values of Palaearctic open habitats for vascular plants, bryophytes, lichens and complete vegetation (i.e., the sum of the...
Preprint
Aridity and intensive grazing have been confirmed to affect the facilitative effects of dryland shrubs. However, their combined effects on plant-plant interactions have rarely been tested. To test how these two factors affect relations between plants, we analyzed 144 plots (under shrub canopy vs. open areas) at 12 sampling areas established in the...
Article
Full-text available
Two separate experiments was carried out in a randomized complete design in 4 replicates in order to evaluate agronomy aspects of cultivation and aim of evaluation effective treatments in breaking dormancy of native and valuable medicinal plant, Caper seeds (Mazdavand ecotype) and also to evaluate the best seed bed medium for germination of Caper s...
Article
Questions (i) Do patterns of species diversity and composition differ between the plots exposed to high versus low grazing intensity? (ii) Do these differences vary among three regions with different climate, representing the gradient from the arid to sub‐humid conditions? Location northeastern Iran Methods We compared plots intensively grazed by...
Article
Full-text available
The consequence of climate change in the natural habitats of arid and semi-arid regions is the reduction of species diversity which highlights the necessity of domestication and cultivation of wild species in agricultural systems. The medicinal plant caper (Capparis spinosa L.) is one of the valuable native plants in the natural arena that can be c...
Article
Full-text available
Researches related to invasive plant ecology has recently increased, hence the terminology used in the early studies can later be perused by other researchers. Incorrect use of the term "invasive species" instead of "non-invasive species" may lead to environmental consequences and threatens the biodiversity and life of endangered species. Therefore...
Article
We examined how biological soil crust (BSC) communities are affected by micro-geomorphology and soil characteristics in an arid ecosystem in northeastern Iran. Sampling was carried out systematically in the summer of 2016 along a geomorphic gradient within an alluvial fan by using micro-scale plots (0.25 m2) and soil samples from the top soil layer...
Article
We examined how biological soil crust (BSC) communities are affected by micro-geomorphology and soil characteristics in an arid ecosystem in northeastern Iran. Sampling was carried out systematically in the summer of 2016 along a geomorphic gradient within an alluvial fan by using micro-scale plots (0.25 m2) and soil samples from the top soil layer...
Article
Full-text available
Understanding the responses of vegetation characteristics and soil properties to grazing in different precipitation regimes is useful for the management of rangelands, especially in the arid regions. In northeastern Iran, we studied the responses of vegetation to livestock grazing in three regions with different climates: arid, semiarid, and subhum...
Article
Biological soil crusts (BSCs) have a vital role regarding vegetation and soil development in arid and semi-arid areas in the world, and apparently in Iran, where they comprise more than 85% of the land. In this research, the relationship between BSCs and plant functional groups, considering soil parameters along an arid alluvial fan located in Khor...
Article
Full-text available
The most important and sensitive level in the modification of rangelands surrounding the mine is the initial seedling establishment of plants, which often faces failure due to adverse environmental conditions, poor soil nutrients, disturbance of soil different layers and its instability and unstable soil around the mines. New methods of rangeland i...
Article
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In this paper, the establishment and growth of medicinal species Ziziphora clinopodioides Lam. were studied through inoculation with two mycorrhizal fungi species, Glomus mosseae and Glomus intraradices, in arid/semi-arid Bahar-Kish rangelands, Iran in 2012 and 2013. The root colonization percentage of Ziziphora, as well as their establishment and...
Article
Full-text available
Introduction: Heavy metals have become one of the sources of soil contamination as a result of human-induced mining for metal extraction. Early establishment of seedlings under the unfavorable environmental conditions of mined lands is a major stage that is often faced with failure. This is due to the shortage of precipitation, high evapotranspirat...
Article
Drought and high temperatures are main environmental stresses for noxious plants in the arid environments. Responses of arid land plants to drought are complicated and include different adaptive mechanisms in terms of physiological, morphological, and phenological responses. This research aimed at investigating phenological and/or morphological res...
Article
Full-text available
Drought and high temperatures are main environmental stresses for noxious plants in the arid environments. Responses of arid land plants to drought are complicated and include different adaptive mechanisms in terms of physiological, morphological, and phenological responses. This research aimed at investigating phenological and/or morphological res...
Article
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Livestock grazing is a major driver of ecosystem functions in drylands and would be expected to influence soil biota such as termites. We examined changes in soil chemistry and plant community composition on mounds constructed by the subterranean termite Anacanthotermes ahngerianus along a gradient in grazing intensity in an arid steppe in north-ea...
Article
Full-text available
Fire is one of the incorporate vegetation management practices for grasslands and semi-arid rangelands. It may affect symbiotic relationship between range plants and mycorrhiza. Accordingly, this research was aimed to investigate the effects of a spring prescribed fire on the symbiotic relationships between mycorrhiza and 6 plant species. The study...
Article
Classification of Ecological Species Groups (ESG) in plant community analysis is one method to describe vegetation and relating them to environmental factors. This study was conducted to recognize ESG and their relationships with some environmental factors in Chamanbid-Jozak protected area from 2014 to 2016. This area is located in the eastern part...
Conference Paper
قارچ‌های میکوریز یکی از قدیمی‌ترین و گسترده‌ترین جوامع همزیست در طبیعت هستند. میکوریز نوعی قارچ همزیست با ریشه گیاهان است. قارچ‌های میکوریز از اهمیت ویژه‌ای در اکولوژی خاک برخوردار می‌باشد. وجود آن‌ها سبب تغییر ترکیب شیمیایی ترشحات ریشه، جذب عناصر قارچی، تعاملات جامعه میکروبی و ریزوسفر از محیط‌زیست می‌شود. فرم رویشی گیاهان رایج‌ترین و ساده‌ترین معی...
Conference Paper
Plant-mycorrhiza symbiosis may significantly affect plant community dynamic and composition in dry grasslands. On the other hand, fire is a natural component of many dry grasslands worldwide. Prescribed fire, as a restoration technique, may alter the plant-mycorrhiza relationships. However, its effects may vary on different plant species, and depen...
Conference Paper
Plant-mycorrhiza symbiosis may significantly affect plant community dynamic and composition in dry grasslands. On the other hand, fire is a natural component of many dry grasslands worldwide. Prescribed fire, as a restoration technique, may alter the plant mycorrhiza relationships. However, its effects may vary on different plant species, and depen...
Article
Aims Species composition and diversity of the mountainous rangelands are results of interactions between environmental severities, heterogeneous topography and facilitative effects by nurse plants. This research was aimed to compare relative effects of these three environmental variables on the natural vegetation of a mountainous rangeland. For a m...
Chapter
Iran is a dry country, with 88 percent of its territory being located in the hyper arid, arid, semi-arid, and dry subhumid areas. Iran has a 4000-year history of human civilization, vast diversity of landscapes with 8000 plant, 535 bird, 197 mammal and 870 fish species. However, rapid increase of human population, industrialization together with ad...
Article
Full-text available
Soil bacteria and fungi play key roles in the functioning of terrestrial ecosystems, yet our understanding of their responses to climate change lags significantly behind that of other organisms. This gap in our understanding is particularly true for drylands, which occupy ∼41% of Earth´s surface, because no global, systematic assessments of the joi...
Article
Full-text available
Climate and human impacts are changing the nitrogen (N) inputs and losses in terrestrial ecosystems. However, it is largely unknown how these two major drivers of global change will simultaneously influence the N cycle in drylands, the largest terrestrial biome on the planet. We conducted a global observational study to evaluate how aridity and hum...
Article
As the utilization of rangelands in Iran has exceeded 2.2 times its carrying capacity, increasing numbers of livestock, especially in drought years, have dramatic effects on rangelands. In this regard, the prediction of forage production is an important management strategy to mitigate the consequences of drought. In Plour and Saveh Range Experiment...
Article
Full-text available
Geographic, climatic, and soil factors are major drivers of plant beta diversity, but their importance for dryland plant communities is poorly known. This study aims to: i) characterize patterns of beta diversity in global drylands, ii) detect common environmental drivers of beta diversity, and iii) test for thresholds in environmental conditions d...
Article
Full-text available
The effect of six SiO2 nanosized concentrations (0, 5, 20, 40, 60 and 80 mg L-1) and three seed prechilling treatments (control, seed prechilling before nano SiO2 treatments, treatments of seed with nano SiO2 before prechilling) on germination and seedling growth of tall wheatgrass (Agropyron elongatum L.) were studied. Results indicated that appli...
Article
Full-text available
Aim Geographical, climatic and soil factors are major drivers of plant beta diversity, but their importance for dryland plant communities is poorly known. The aim of this study was to: (1) characterize patterns of beta diversity in global drylands; (2) detect common environmental drivers of beta diversity; and (3) test for thresholds in environment...
Article
Full-text available
The biogeochemical cycles of carbon (C), nitrogen (N) and phosphorus (P) are interlinked by primary production, respiration and decomposition in terrestrial ecosystems1. It has been suggested that the C, N and P cycles could become uncoupled under rapid climate change because of the different degrees of control exerted on the supply of these elemen...
Article
The biogeochemical cycles of carbon (C), nitrogen (N) and phosphorus (P) are interlinked by primary production, respiration and decomposition in terrestrial ecosystems. It has been suggested that the C, N and P cycles could become uncoupled under rapid climate change because of the different degrees of control exerted on the supply of these element...
Article
A perennial forage grass, Agropyron desertorum was sown under the canopies of four shrub species or in open areas to test for facilitation during seedling establishment in an arid rangeland in Karnakh, Northeast Iran. Height, area and volume of shrubs were measured. Microclimate conditions and seedling establishment were assessed three times within...
Article
Full-text available
Experiments suggest that biodiversity enhances the ability of ecosystems to maintain multiple functions, such as carbon storage, productivity, and the buildup of nutrient pools (multifunctionality). However, the relationship between biodiversity and multifunctionality has never been assessed globally in natural ecosystems. We report here on a globa...
Article
Plant-plant interactions are known as the main biotic drivers of the vegetation dynamics. Therefore, understanding such processes is beneficial for the applied vegetation management. The aim of this research was to investigate the type and intensity of plant-plant interaction during the time course of a growth season. We studied ecophysiological as...
Article
Full-text available
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Article
In arid environments, episodically-pulsed resources are important components of annual water and nutrient supply for plants. This study set out to test whether seedlings have an increased capacity for using pulsed resources, which might then improve establishment when in competition with older individuals. A second aim was to determine whether ther...
Article
Full-text available
Floristic studies are fundamental for the applied sciences such as rangeland management and conservation. Unique ecological and climatic conditions in the Northern Khorasan Province (NKP) make it a remarkable habitat for the floristic studies. Plant species were collected from 50 field sites, representing major habitats of winter and rural rangelan...
Article
Full-text available
One of the key factors in managing a rangeland is to determine the relative preference of its major plant species by the grazing livestock. Preference value of each plant species is affected by plant type, companion plants, availability by animals, phenological stage, climate condition, and the livestock species. We investigated the grazing behavio...

Questions

Question (1)
Question
I would like to test effects of wildfire burning on plant - mycorrhiza interaction in a semi-arid rangeland . I will be more than happy to do this in coolabration  with other scientists aroud the world

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Projects

Projects (4)
Project
- Evaluation ecophysiological traits of Capparis spinosa L. with the aim of domestication. - Investigation of ecological, biological and phenological properties of Caper plant in natural habitat. - Investigation of changes in essential oil components and secondary metabolites (alkaloids, flavonoids and phenols) under moisture changes. - Investigation of physiological parameters (proline content, antioxidant enzymes activity and content of photosynthetic pigments) in Caper plant under moisture changes.
Project
Effects of livestock grazing on plant diversity, functional diversity and biotic interaction along a climatic gradient in northeastern Iran