scholarly journals The Biomass and Physiological Responses of Vallisneria natans (Lour.) Hara to Epiphytic Algae and Different Nitrate-N Concentrations in the Water Column

Water ◽  
2017 ◽  
Vol 9 (11) ◽  
pp. 863 ◽  
Author(s):  
Fenli Min ◽  
Jincheng Zuo ◽  
Yi Zhang ◽  
Qingwei Lin ◽  
Biyun Liu ◽  
...  
Keyword(s):  
Water Column ◽  
Physiological Responses ◽  
Epiphytic Algae ◽  
Nitrate N ◽  
Vallisneria Natans

scholarly journals Removal of nutrients from water column and physiological responses of Vallisneria natans under sulfonamide stress

2019 ◽  
Vol 34 (1) ◽  
pp. 675-683
Author(s):  
Houtao Xu ◽  
Liming Zhu ◽  
Liqing Wang ◽  
Xiaoyan Zheng ◽  
Linkui Cao
Keyword(s):  
Water Column ◽  
Physiological Responses ◽  
Vallisneria Natans

Effects of high ammonium enrichment in water column on the clonal growth of submerged macrophyte Vallisneria natans

2018 ◽  
Vol 25 (32) ◽  
pp. 32735-32746 ◽  
Author(s):  
Qingyang Rao ◽  
Xuwei Deng ◽  
Haojie Su ◽  
Wulai Xia ◽  
Yao Wu ◽  
...  
Keyword(s):  
Water Column ◽  
Clonal Growth ◽  
Submerged Macrophyte ◽  
Vallisneria Natans

The role of NH+4 toxicity in the decline of the submersed macrophyte Vallisneria natans in lakes of the Yangtze River basin, China

2007 ◽  
Vol 58 (6) ◽  
pp. 581 ◽  
Author(s):  
Te Cao ◽  
Ping Xie ◽  
Leyi Ni ◽  
Aiping Wu ◽  
Min Zhang ◽  
...  
Keyword(s):  
Water Column ◽  
River Basin ◽  
Yangtze River ◽  
Yangtze River Basin ◽  
The Yangtze River ◽  
Submersed Macrophytes ◽  
Vallisneria Natans ◽  
Submersed Macrophyte ◽  
N Concentration ◽  
The Yangtze River Basin

Experimental and field studies were conducted to evaluate the effects of NH4+ enrichment on growth and distribution of the submersed macrophyte, Vallisneria natans L, in lakes of the Yangtze River in China, based on the balance between free amino acids (FAA) and soluble carbohydrates (SC) in the plant tissue. Increase of NH4+ rather than NO3– concentrations in the water column caused FAA accumulation and SC depletion of the plant. The plant showed a unimodal pattern of biomass distribution along both FAA/SC ratios and external NH4+ concentrations, indicating that a moderate NH4-N concentration (<0.3 mg L–1) benefited the plant, whereas the high NH4-N concentration (>0.56 mg L–1) eliminated the plant completely. Therefore, 0.56 mg NH4-N mg L–1 in the water column was taken as the upper limit for V. natans in lakes of the Yangtze River basin. The mesocosm experiment showed that at a high external NH4-N (0.81 mg L–1), V. natans failed to propagate with a loss of half SC content (5 mg g–1 DW) in the rhizomes, indicating that the consumption of carbohydrates for detoxification of excess NH4+ into non-toxic FAA significantly diminished carbohydrate supply to the rhizomes. This might consequently inhibit the vegetative reproduction of the plant, and also might be an important cause for the decline and disappearance of the plant with eutrophication. The present study for the first time reports substantial ecophysiological evidences for NH4+ stress to submersed macrophytes, and indicates that NH4+ toxicity arising from eutrophication probably plays a key role in the deterioration of submersed macrophytes like V. natans.

Short-time response in root morphology of Vallisneria natans to sediment type and water-column nutrient

2005 ◽  
Vol 81 (1) ◽  
pp. 85-96 ◽  
Author(s):  
Yonghong Xie ◽  
Shuqing An ◽  
Xin Yao ◽  
Keyan Xiao ◽  
Cheng Zhang
Keyword(s):  
Water Column ◽  
Root Morphology ◽  
Time Response ◽  
Sediment Type ◽  
Vallisneria Natans ◽  
Water Column Nutrient ◽  
Short Time
Sign in / Sign up

Export Citation Format

Share Document