Academic Journal
Distribution of terrestrially derived dissolved organic matter on the Southeastern U.S
| العنوان: | Distribution of terrestrially derived dissolved organic matter on the Southeastern U.S |
|---|---|
| المؤلفون: | Mary Ann Moran, Lawrence R. Pomeroy, Larry P. Atkinson, Robert E. Hodson |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://www.aslo.org/lo/toc/vol_36/issue_6/1134.pdf. |
| سنة النشر: | 1991 |
| المجموعة: | CiteSeerX |
| الوصف: | Dissolved lignin-derived compounds in seawater indicate the presence of organic matter origi-nating from vascular plants and therefore from terrestrial (upland and coastal marsh) ecosystems. We used a hydrophobic resin to concentrate lignin-rich humic substances and to determine con-centrations of lignin oxidation products (vanillyl lignin phenols) for waters of the continental shelf of the southeastern U.S. Lignin phenol concentrations ranged from 0.05 to 4.2 pg liter- ’ and accounted for 0.002-O. 13 % of the total dissolved organic carbon (DOC) pool in continental shelf waters. Dissolved lignin concentrations were generally highest near the shore and in those areas receiving greatest river and marsh discharge. Concentrations varied on both short-term (weekly) and seasonal time scales, however, indicating that the contribution of terrestrially derived dissolved organic matter to the C budget of the shelf is quite variable. Salinity (>~YcQ) was significantly correlated (negatively) with lignin phenol concentrations during three of four cruises, suggesting largely conservative mixing of lignin-derived material on the shelf. In selected rivers and salt marshes contributing terrestrially derived organic matter to the con-tinental shelf, lignin phenol C accounted for 0.14-l.O % of the DOC. A simple mixing model which |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.583.5834; http://www.aslo.org/lo/toc/vol_36/issue_6/1134.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.583.5834 http://www.aslo.org/lo/toc/vol_36/issue_6/1134.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.4752EC1B |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |