Effects of Land-Use Change on Characteristics and Dynamics of Watershed Discharges in Babeldaob, Palau, Micronesia

المؤلفون المشاركون

Richmond, Robert H.
Victor, Steven
Fabricius, Katharina E.
Harrison, Peter
Wolanski, Eric
Golbuu, Yimnang

المصدر

Journal of Marine Sciences

العدد

المجلد 2011، العدد 2011 (31 ديسمبر/كانون الأول 2011)، ص ص. 1-17، 17ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2010-09-26

دولة النشر

مصر

عدد الصفحات

17

التخصصات الرئيسية

علم الأرض والمياه والبيئة

الملخص EN

This study assessed the impacts of differing levels of land development in four watersheds in Palau on river sediment yield and on sedimentation and turbidity.

Area corrected sediment yield was strongly related to land development (r2=0.96, P=0.02), varying from 9.7 to 216 tons km−2 yr−1 between the least and most developed watershed.

Mean sedimentation rates on reefs ranged from 0.7 to 46 mg cm−2 d−1, and mean turbidity ranged from 9 to 139 mg l−1.

The higher values exceeded those known to harm corals.

Because Palau's watersheds and estuaries are small, river floods were short-lived (typically lasting less than a day) and the estuaries adjusted just as quickly to a number of different estuarine circulation patterns that, in turn, generated a large variability in the export of riverine fine sediment to the reefs.

The ultimate fate of the fine sediment deposited on the reefs depended on wind resuspension, local currents, and geomorphology (whether the bay was open or semi-enclosed).

Palau's small estuaries were generally not as effective as bigger estuaries in trapping sediments and thus at sheltering the reefs.

Therefore, greater efforts are needed to control and mitigate land activities that contribute to the increase in sediment yield.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Golbuu, Yimnang& Wolanski, Eric& Harrison, Peter& Richmond, Robert H.& Victor, Steven& Fabricius, Katharina E.. 2010. Effects of Land-Use Change on Characteristics and Dynamics of Watershed Discharges in Babeldaob, Palau, Micronesia. Journal of Marine Sciences،Vol. 2011, no. 2011, pp.1-17.
https://search.emarefa.net/detail/BIM-990961

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Golbuu, Yimnang…[et al.]. Effects of Land-Use Change on Characteristics and Dynamics of Watershed Discharges in Babeldaob, Palau, Micronesia. Journal of Marine Sciences No. 2011 (2011), pp.1-17.
https://search.emarefa.net/detail/BIM-990961

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Golbuu, Yimnang& Wolanski, Eric& Harrison, Peter& Richmond, Robert H.& Victor, Steven& Fabricius, Katharina E.. Effects of Land-Use Change on Characteristics and Dynamics of Watershed Discharges in Babeldaob, Palau, Micronesia. Journal of Marine Sciences. 2010. Vol. 2011, no. 2011, pp.1-17.
https://search.emarefa.net/detail/BIM-990961

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-990961