Evaluating Plant Species Diversity and Physiographical Factors in Natural Broad Leaf Forest

Hashemi, Seyed Armin

doi:10.3844/ajessp.2010.20.25

Cited by 15 publications

(10 citation statements)

References 14 publications

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“…The negative effects of slope on species diversity in the current investigation were obvious, which could be related to soil erosion, water drainage and unfavorable conditions for plant growth (Hall 1983). This is further confirmed by results obtained in other parts of the Hyrcanian forest (Hashemi 2010, Esmailzadeh et al 2012). In addition, a positive correlation was observed between sand content and slope, which is consistent with the results of Weill and Sparovek (2008).…”

Section: Discussionsupporting

confidence: 88%

Environmental factors–ecological species group relationships in the Surash lowland‐mountain forests in northern Iran

Vahdati

Mehrvarz

Dey

et al. 2016

Nordic Journal of Botany

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Identification of the primary factors that influence the ecological distribution of species groups is important to managers of lowland‐mountain forests in northern Iran. The aim of this study was to identify main ecological species groups, describe the site conditions associated with these species groups and the relationships between environmental factors and the distribution of ecological species groups using multi‐variate analysis (Detrended correspondence analysis (DCA) and Canonical correspondence analysis (CCA)). For this purpose, 50 relevés (400 m2 each) were sampled using the Braun‐Blanquet method. Vegetation was classified into three ecological species groups using a modified two‐way indicator species analysis (TWINSPAN). In each relevé, environmental factors (topographic and soil variables) were measured and analysed using one‐way ANOVA and Pearson r statistics. Further, species diversity indices were determined for the identified ecological species groups. Our results show that the environmental factors, e.g. elevation, slope, slope aspect, soil texture, pH and organic matter, were the most important factors explaining the distribution of the three ecological species groups in the study area. The diversity of the ecological species groups decreased with elevation. The results provide an ecological basis for forest management and for developing strategies for forest conservation in the study area.

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Section: Discussionsupporting

confidence: 88%

Environmental factors–ecological species group relationships in the Surash lowland‐mountain forests in northern Iran

Vahdati

Mehrvarz

Dey

et al. 2016

Nordic Journal of Botany

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“…One-way Analysis Of Variance (ANOVA) (Parsakhoo et al, 2009;Zareian et al, 2010;Iqbal and Khan, 2010;Hashemi, 2010), followed by Duncan's test. A probability level less than 0.05 were accepted as significance.…”

Section: Stereotypy Behaviorsmentioning

confidence: 99%

Screening Neuropharmacological Activities of <i>Kaempferia parviflora</i> (Krachai Dam) in Healthy Adult Male Rats

Hawiset¹

2011

American Journal of Applied Sciences

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Problem statement:Although the global prevalence of psychological disorders is increasing continually, the efficacies of therapeutic strategies are still very limited. Oxidative stress has been implicated in the pathogenesis of psychiatric disorders and substance possessing antioxidant activity can alleviate the mentioned conditions. Therefore, we hypothesized that Kaempferia parviflora, a medicinal plant claimed for nerve tonic, also possessed the neuropharmacological activities which provide the advantage for psychiatric disorders. Approach: Adult male Wistar rats, weighing 180-220 grams, were orally given the ethanolic extract of K. parviflora at doses of 150, 200 and 250 mg kg −1 BW once daily for 2 weeks. Then, they were determined the neuropharmacological activities including anxiolytic, anti-depression like behavior and cognitive enhancement after single dose, 1 and 2 weeks of treatment. Results: K. parviflora possessed anti-depression like behavior and cognitive enhancement at all treatment duration. Unfortunately, this substance failed to show anxiolytic like activity. Conclusion: Our results suggested that K. parviflora might be used as a novel therapeutic strategy for psychiatric disorder and cognitive enhancement. However, further investigations about precise underlying mechanism are still required.

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“…Alfa çeşitliliği belli bir alan için belirlenirken beta çeşitliliği ise alanlar arasındaki çeşitliliğin ölçüsü olarak ifade edilmektedir. Gama çeşitliği ise bu alanları içine alan ilgili ekosistemin toplam çeşitliliği anlamına gelmektedir [8,9,10,11].…”

Section: Introductionunclassified

Orman Yetişme Ortamında Alfa Tür Çeşitliliğinin Hesaplanması ve Çevresel Değişkenlerle İlişkileri

Negiz¹,

Kurt²

2016

SDÜ Fen Bil Enst Der

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Özet: Bu çalışma orman yetişme ortamlarında alfa tür çeşitliliğinin hesaplanması üzerine gerçekleştirilmiştir. Alfa tür çeşitliliği bir yöredeki biyolojik çeşitliliği ifade eden önemli bir bileşendir. Alfa tür çeşitliliğinin belirlenmesi ile bir yörenin bitki türleri için potansiyel yayılış alanlarını tespit etmek açısından değerli bilgiler elde edilebilmektedir. Çalışmamızda Burdur-Altınyayla yöresinden alınan 40 örnek alandaki bitki türlerinden yararlanarak alfa tür çeşitlilikleri hesaplanmıştır. Daha sonra alfa tür çeşitliliği ile çevresel değişkenler arasındaki ilişkiler korelasyon analizleri ile ortaya koyulmaya çalışılmıştır. Buradaki en dikkat çeken sonuç yükselti ile alfa çeşitliliği arasında pozitif yönde bir ilişkinin bulunmasıdır. Ayrıca çalışmada vejetasyon verileri ile çevresel değişkenler Eğrisel Uyum Analizi (DCA) ile incelenmiş, yükselti ve bakı ile pozitif yönde ilişkiler tespit edilirken yüzey taşlılığı ile bitki türleri arasında negatif bir ilişkinin olduğu belirlenmiştir. The Calculation of Alpha Species Diversity in Forest Growth Environment and TheirRelations with the Environmental Variables Keywords Alpha diversity, Correlation analysis, Environmental variables, Altınyayla regionAbstract: This study was carried out regarding the calculation of alpha species diversity in forest growth environment. The alpha species diversity is an important component which expresses biological diversity in a region. By determining the alpha species diversity, valuable information can be obtained in terms of identifying potential distribution area for plant species of a region. In our study, alpha species diversities were calculated from the plant species of 40 sample plots, which were taken from Burdur-Altınyayla region. Then, the relationships between environmental variables and alpha species diversity were tried to be found with the help of correlation analysis. The most notable result is that a positive correlation was found between the elevation and alpha species diversities. In addition, vegetation data and environmental variables were examined by Detrended Correspondence Analysis (DCA) ; and while positive relationships were found concerning vegetation and aspect; negative relationships were seen between stony surfaces and plant species.

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Evaluating Plant Species Diversity and Physiographical Factors in Natural Broad Leaf Forest

Cited by 15 publications

References 14 publications

Environmental factors–ecological species group relationships in the Surash lowland‐mountain forests in northern Iran

Environmental factors–ecological species group relationships in the Surash lowland‐mountain forests in northern Iran

Screening Neuropharmacological Activities of <i>Kaempferia parviflora</i> (Krachai Dam) in Healthy Adult Male Rats

Orman Yetişme Ortamında Alfa Tür Çeşitliliğinin Hesaplanması ve Çevresel Değişkenlerle İlişkileri

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