التفاصيل البيبلوغرافية
| العنوان: |
Constraining nitrogen sources to a seagrass-dominated coastal embayment by using an isotope mass balance approach |
| المؤلفون: |
Russell, D.G., Kessler, A.J., Wong, W.W., van Oevelen, D., Cook, P.L.M. |
| المصدر: |
%3Ci%3EMar.+Freshw.+Res.+73%285%29%3C%2Fi%3E%3A+703-709.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1071%2Fmf21320%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1071%2Fmf21320%3C%2Fa%3E |
| سنة النشر: |
2022 |
| المجموعة: |
Royal Netherlands Institute for Sea Research: NIOZ Repository |
| مصطلحات موضوعية: |
Seagrass |
| الوصف: |
Nitrogen (N) is often the key nutrient limiting primary production in coastal waters. Quantifying sources and sinks of N is therefore critical to understanding the factors that underpin the productivity of coastal ecosystems. Constraining nitrogen inputs can be difficult for some terms such as N fixation and marine exchange as a consequence of uncertainties associated with scaling and stochasticity. To help overcome these issues, we undertook a N budget incorporating an isotope and mass balance to constrain N sources in a large oligotrophic coastal embayment (Western Port, Australia). The total N input to Western Port was calculated to be 1400 Mg N year −1 , which is remarkably consistent with previous estimates of sedimentation rates within the system. Catchment inputs, N fixation, marine sources and atmospheric deposition comprised 44, 28, 28 and 13% of N inputs respectively. Retention of marine-derived N equated to ~3 and ~10% of total N and NO x flushed through the system from the marine end-member. The relatively high contribution of N fixation compared with previous studies was most likely to be due to the high proportion of nutrient-limited intertidal sediments where N is mediated by seagrasses and sediment cyanobacteria. |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
info:eu-repo/semantics/altIdentifier/wos/000760892400001; https://www.vliz.be/imisdocs/publications/40/378140.pdf |
| الاتاحة: |
https://www.vliz.be/imisdocs/publications/40/378140.pdf |
| Rights: |
info:eu-repo/semantics/openAccess |
| رقم الانضمام: |
edsbas.28EEF5E6 |
| قاعدة البيانات: |
BASE |