Arid
DOI10.1186/1472-6785-13-22
Floral diversity in desert ecosystems: Comparing field sampling to image analyses in assessing species cover
Ksiksi, Taoufik S.1; El-Keblawy, Ali A.2
通讯作者Ksiksi, Taoufik S.
来源期刊BMC ECOLOGY
ISSN1472-6785
出版年2013
卷号13
英文摘要

Background: Developing a quick and reliable technique to estimate floral cover in deserts will assist in monitoring and management. The present attempt was to estimate plant cover in the UAE desert using both digital photography and field sampling. Digital photographs were correlated with field data to estimate floral cover in moderately (Al-Maha) and heavily (DDCR) grazed areas. The Kruskal-Wallis test was also used to assess compatibility between the two techniques within and across grazing intensities and soil substrates.


Results: Results showed that photographs could be a reliable technique within the sand dune substrate under moderate grazing (r=0.69). The results were very poorly correlated (r=-0.24) or even inversely proportional (r=-0.48) when performed within DDCR. Overall, Chi-square values for Al-Maha and DDCR were not significant at P>0.05, indicating similarities between the two methods. At the soil type level, the Kruskal-Wallis analysis was not significant (P>0.05), except for gravel plains (P<0.05). Across grazing intensities and soil substrates, the two techniques were in agreement in ranking most plant species, except for Lycium shawii.


Conclusions: Consequently, the present study has proven that digital photography could not be used reliably to asses floral cover, while further testing is required to support such claim. An image-based sampling approach of plant cover at the species level, across different grazing and substrate variations in desert ecosystems, has its uses, but results are to be cautiously interpreted.


类型Article
语种英语
国家U Arab Emirates
收录类别SCI-E
WOS记录号WOS:000321389900001
WOS关键词GROUND-COVER ; VEGETATION ; CLASSIFICATION ; PHOTOGRAPHY
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/176212
作者单位1.UAE Univ, Dept Biol, Al Ain, U Arab Emirates;
2.Univ Sharjah, Dept Appl Biol, Sharjah, U Arab Emirates
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GB/T 7714
Ksiksi, Taoufik S.,El-Keblawy, Ali A.. Floral diversity in desert ecosystems: Comparing field sampling to image analyses in assessing species cover[J],2013,13.
APA Ksiksi, Taoufik S.,&El-Keblawy, Ali A..(2013).Floral diversity in desert ecosystems: Comparing field sampling to image analyses in assessing species cover.BMC ECOLOGY,13.
MLA Ksiksi, Taoufik S.,et al."Floral diversity in desert ecosystems: Comparing field sampling to image analyses in assessing species cover".BMC ECOLOGY 13(2013).
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