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Composition and diversity of weed communities in al-Jouf province, Northern Saudi Arabia
المؤلف
المصدر
Saudi Journal of Biological Sciences
العدد
المجلد 19، العدد 3 (30 سبتمبر/أيلول 2012)، ص ص. 369-376، 8ص.
الناشر
تاريخ النشر
2012-09-30
دولة النشر
السعودية
عدد الصفحات
8
التخصصات الرئيسية
الموضوعات
الملخص EN
The aim of this study was to identify the main weed communities in Al-Jouf province in northern Saudi Arabia.
Moreover, the composition and diversity of these communities were studied in relation to soil variables and crop type.
Some 54 stands representing olive orchards, date palm orchards, wheat crop and watermelon crop were studied, using ten quadrats (1 · 1 m) per stand.
A total of 71 species belonging to 22 families and 61 genera were observed.
The classification of vegetation using the Two Way Indicator Species Analysis (TWINSPAN) resulted in the recognition of four vegetation groups representing wheat crop, orchards in winter season, orchards in summer season and watermelon crop.
These results suggested the importance of both crop and season for the formation of weed community.
Detrended Correspondence Analysis (DCA) showed that these groups are clearly distinguished by the first two DCA axes.
The species richness was higher in both olive and date palm orchards than in wheat and watermelon crops.
This pattern of species richness could be related to farm management practices and habitat micro-heterogeneity.
Soil electrical conductivity, organic carbon and soil texture showed significant correlations with species richness and the cover values of some dominant species, suggesting the significant role of soil characteristics in weed community structure and diversity
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Jumah, Nasr H.. 2012. Composition and diversity of weed communities in al-Jouf province, Northern Saudi Arabia. Saudi Journal of Biological Sciences،Vol. 19, no. 3, pp.369-376.
https://search.emarefa.net/detail/BIM-359497
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Jumah, Nasr H.. Composition and diversity of weed communities in al-Jouf province, Northern Saudi Arabia. Saudi Journal of Biological Sciences Vol. 19, no. 3 (2012), pp.369-376.
https://search.emarefa.net/detail/BIM-359497
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Jumah, Nasr H.. Composition and diversity of weed communities in al-Jouf province, Northern Saudi Arabia. Saudi Journal of Biological Sciences. 2012. Vol. 19, no. 3, pp.369-376.
https://search.emarefa.net/detail/BIM-359497
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references : p. 375-376
رقم السجل
BIM-359497
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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