Vui lòng dùng định danh này để trích dẫn hoặc liên kết đến tài liệu này: http://thuvienso.vanlanguni.edu.vn/handle/Vanlang_TV/15283
Nhan đề: Anthropogenically Induced Shifts in N:P:Si Stoichiometry and Implications in Ganga River
Tác giả: Pandey, Jitendra
Tripathi, Shraddha
Pandey, Usha
Từ khoá: Atmospheric deposition
Diatom
Elemental stoichiometry
Ganges basin
Nutrient limitation
Năm xuất bản: 2016
Nhà xuất bản: Libertas Academica
Tóm tắt: Human-induced N:P:Si imbalances and associated shifts in nutrient limitation in Ganga River remain relatively uncertain despite recent studies highlighting its importance. The goal of this watershed-scale study was to investigate the nutrient-limiting status of Ganga River, as influenced by atmospheric deposition (AD) and catchment runoff together with urban–industrial development. AD was highest in middle watershed, where AD of NO3 − ranged from 10.56 to 28.93, AD of NH4 + from 4.26 to 15.42, and AD of PO4 3− from 1.82 to 2.94 kg ha−1 year−1. The results showed that ADcoupled catchment runoff is an important factor, in addition to direct urban–industrial release, causing N:P:Si imbalances that lead to N over P limitation (N:P , 16:1) and Si over N limitation (Si:N , 1) in the river. The skewed N:P:Si ratios observed here may have important effects on phytoplankton/diatom growth and trophic cascades and consequently on river ecology. This study that forms the first report on changing atmosphere–land–water N:P:Si linkages suggests that the current policy on Ganga rejuvenation needs to focus more strongly on cross-domain drivers of stoichiometric imbalances and approaches to minimize them.
Định danh: http://thuvienso.vanlanguni.edu.vn/handle/Vanlang_TV/15283
ISSN: 1178-6221
Bộ sưu tập: Bài báo_lưu trữ

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