Abstract
Understanding of biodiversity status can be applied as a guide to better ecosystem management. The ecosystem ecological sustainability is ensured by high species diversity and better conservation. Therefore, the purpose of this research is to identify the species diversity of trees and shrubs in the Guijeh-bel region of Ahar and to determine species diversity using related indicators, as well as the relationship between biodiversity and physiographic factors. Sampling was done in 48 circular sample plots, each 314m2, by a random-systematic method within a 150×200m network. In each sample plot, a list of all of tree and shrub species with abundant-overcome values was recorded based on the Brown Blanche scale. The results showed that there were 13 woody species. Smilax excelsa L. and Rhamnus sp. had the highest (39%) and the lowest (0.04%) presence in the sample plots, respectively. The number of stems varied from 10 to 110 stems of different species in the sample plots. Two index species of Arasbaran region, Acer campestre L. and Viburnum lantana L., were observed in this area. Viburnum lantana and Acer campestre were often found on the western and the eastern aspects, respectively. The main effects of slope on the Taxa, Simpson, Shannon-Weiner and Margaleff indicators were not significant. The main effect of aspect was significant on the taxa index at 1% level and on other indicators at 5% level. The average of all indicators of diversity in the western aspect was higher than those of other aspects. The results of clustering of vegetation composition confirmed the results of the comparison of the site diversity indices. According to the results of the coefficient of variation, the taxa and Margalaf indices had the highest coefficient of variation. Therefore, in other studies, as well as assessment of the effects of management and monitoring of vegetation changes, it is recommended to use the indicators. Based on the results of this study, the high values of slope steepness and biodiversity, provides the protection of the area.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-sa. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 14
Claim · model-written summary
Thirteen woody species were recorded in the study area.
Verbatim
t0“Diversity of tree and shrub species in woodlands of Guijeh-bel region of Ahar”
e0“The results showed that there were 13 woody species”
Claim · model-written summary
Smilax excelsa had the highest presence in the sample plots, at 39%.
- Taxon
- Smilax excelsa L.
Smilax excelsae1 - Outcome
- presence in the sample plotse1
- Value
- 39%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Smilax excelsa L. and Rhamnus sp. had the highest (39%) and the lowest (0.04%) presence in the sample plots, respectively”
t0“Diversity of tree and shrub species in woodlands of Guijeh-bel region of Ahar”
Claim · model-written summary
Rhamnus sp. had the lowest presence in the sample plots, at 0.04%.
RhamnusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Smilax excelsa L. and Rhamnus sp. had the highest (39%) and the lowest (0.04%) presence in the sample plots, respectively”
t0“Diversity of tree and shrub species in woodlands of Guijeh-bel region of Ahar”
Claim · model-written summary
Acer campestre and Viburnum lantana were observed as two index species of the Arasbaran region.
- Taxon
- Acer campestre L. and Viburnum lantana L.
Acer campestre
Viburnum lantanae2 - Outcome
- index speciese2
- Setting
- Arasbaran regione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Two index species of Arasbaran region, Acer campestre L. and Viburnum lantana L., were observed in this area”
t0“Diversity of tree and shrub species in woodlands of Guijeh-bel region of Ahar”
Claim · model-written summary
Viburnum lantana was often found on the western aspect.
- Taxon
- Viburnum lantanaViburnum lantanae3
- Outcome
- often founde3
- Setting
- westerne3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Viburnum lantana and Acer campestre were often found on the western and the eastern aspects, respectively”
Claim · model-written summary
Acer campestre was often found on the eastern aspect.
- Taxon
- Acer campestreAcer campestree3
- Outcome
- often founde3
- Setting
- easterne3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Viburnum lantana and Acer campestre were often found on the western and the eastern aspects, respectively”
Claim · model-written summary
Slope had no significant main effect on the Taxa, Simpson, Shannon-Weiner and Margaleff indicators.
Verbatim
e4“The main effects of slope on the Taxa, Simpson, Shannon-Weiner and Margaleff indicators were not significant”
t0“Diversity of tree and shrub species in woodlands of Guijeh-bel region of Ahar”
Claim · model-written summary
Aspect had a significant main effect on the taxa index.
Not reportedDirection
Verbatim
e5“The main effect of aspect was significant on the taxa index at 1% level and on other indicators at 5% level”
t0“Diversity of tree and shrub species in woodlands of Guijeh-bel region of Ahar”
Claim · model-written summary
Aspect had a significant main effect on the other diversity indicators.
Not reportedDirection
Verbatim
e5“The main effect of aspect was significant on the taxa index at 1% level and on other indicators at 5% level”
t0“Diversity of tree and shrub species in woodlands of Guijeh-bel region of Ahar”
Claim · model-written summary
The average of all diversity indicators was higher in the western aspect than in the other aspects.
Verbatim
e6“The average of all indicators of diversity in the western aspect was higher than those of other aspects”
t0“Diversity of tree and shrub species in woodlands of Guijeh-bel region of Ahar”
Claim · model-written summary
Clustering of vegetation composition confirmed the site comparison of diversity indices.
Verbatim
e7“The results of clustering of vegetation composition confirmed the results of the comparison of the site diversity indices”
t0“Diversity of tree and shrub species in woodlands of Guijeh-bel region of Ahar”
Claim · model-written summary
The taxa and Margalef indices had the highest coefficient of variation.
Verbatim
e7“the taxa and Margalaf indices had the highest coefficient of variation”
t0“Diversity of tree and shrub species in woodlands of Guijeh-bel region of Ahar”
Claim · model-written summary
The authors recommend using these diversity indicators in future studies and in monitoring vegetation change.
Verbatim
e1“it is recommended to use the indicators”
t0“Diversity of tree and shrub species in woodlands of Guijeh-bel region of Ahar”
Claim · model-written summary
High slope steepness and biodiversity provide protection of the area.
Not reportedDirection
Verbatim
e1“the high values of slope steepness and biodiversity, provides the protection of the area”
t0“Diversity of tree and shrub species in woodlands of Guijeh-bel region of Ahar”