التفاصيل البيبلوغرافية
| العنوان: |
Influence of climate variables on Cyperus papyrus stomatal conductance in Lubigi wetland, Kampala, Uganda |
| المؤلفون: |
Opio, A, Jones, M B, Kansiime, F, Otiti, T |
| المصدر: |
African Journal of Aquatic Science; Vol 40, No 2 (2015); 187-192 ; 1727-9364 ; 1608-5914 |
| بيانات النشر: |
NISC |
| سنة النشر: |
2016 |
| المجموعة: |
AJOL - African Journals Online |
| مصطلحات موضوعية: |
acclimatisation, photosynthetically active radiation, relative humidity, temperature, vapour pressure deficit |
| الوصف: |
Cyperus papyrus forms highly productive wetlands in tropical Africa, but the environmental control of transpirational water loss in wetlands is poorly understood. The influence of climate variables on papyrus stomatal conductance in dry and wet seasons of the year was investigated in a wetland in Kampala, Uganda, in June–December, 2012. In situ measurements were made of local climate conditions in a papyrus canopy and of bracteole stomatal conductance. Stomatal conductance was highest early in the day and declined as the day progressed, but stomata were more consistently open in the wet season than in the dry season. The daily cycle of stomatal conductance was influenced by temperature, incident radiation and vapour pressure deficit. Stomata were more sensitive to vapour pressure deficit changes during the wet season than in the dry season, closing sharply as vapour pressure deficit increased. This would seem to be a useful strategy for regulating transpiration, as it reduces water loss when the vapour pressure deficit gradient between the leaf intercellular spaces and the atmosphere is greatest.Keywords: acclimatisation, photosynthetically active radiation, relative humidity, temperature, vapour pressure deficit |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| العلاقة: |
http://www.ajol.info/index.php/ajas/article/view/141075/130808Test; http://www.ajol.info/index.php/ajas/article/view/141075Test |
| الإتاحة: |
http://www.ajol.info/index.php/ajas/article/view/141075Test |
| حقوق: |
Copyright for articles published in this journal is retained by the journal. |
| رقم الانضمام: |
edsbas.2E1B9465 |
| قاعدة البيانات: |
BASE |
