Growth characteristics of Nelumbo nucifera Gaertn. in response to water depth and flooding

1997 ◽  
Vol 12 (1) ◽  
pp. 11 ◽  
Author(s):  
Seiichi Nohara ◽  
Makoto Kimura
Keyword(s):  
Water Depth ◽  
Growth Characteristics ◽  
Nelumbo Nucifera ◽  
Response To Water

scholarly journals Effects of Water Level Fluctuations on the Growth Characteristics and Community Succession of Submerged Macrophytes: A Case Study of Yilong Lake, China

Water ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 2900
Author(s):  
Fengbin Zhao ◽  
Xin Fang ◽  
Zeyu Zhao ◽  
Xiaoli Chai
Keyword(s):  
Community Structure ◽  
Water Level ◽  
Water Depth ◽  
Seed Bank ◽  
Submerged Macrophytes ◽  
Growth Characteristics ◽  
Community Succession ◽  
Submerged Plant ◽  
Submerged Plants ◽  
Emergent Plants

Water level fluctuation (WLF) has a significant effect on aquatic macrophytes, but few experimental studies have examined the effect of WLF on submerged community succession, especially from a large-scale perspective. In this study, field monitoring of WLF and submerged macrophytes was conducted in Yilong Lake (SE China) over two years, and the impacts of WLF on the growth characteristics and the community structure of submerged macrophytes were determined. The results show that the biomass of submerged macrophytes decreased significantly after the water level increased and submerged macrophytes could cope with the adverse environment by adjusting their growth posture, for example, increasing plant length and reducing branch number. However, different submerged plants have different regulatory abilities, which leads to a change in the community structure. Myriophyllum spicatum, Stuckenia pectinata, and Najas marina had better adaptation abilities to WLF than Najas minor and Utricularia vulgaris. Changes in water depth, dissolved oxygen, and transparency significantly contribute to the effect of WLF on submerged plant communities. Therefore, when determining the range of WLF, the above three critical factors and submerged plant species should be considered. WLF changed the spatial distribution of the aquatic plant community. When water levels rose, the density of the submerged macrophyte community in the original growth region reduced as the emergent plants migrated to shallower water, and the seed bank germination was aided by transparent water produced among emergent plants. This can be used as a pioneering measure to restore submerged plants in eutrophic lakes with low transparency. In addition, a suitable water depth created by WLF was conducive to activating the seed bank and improving the diversity of aquatic plants. Finally, a distribution map of aquatic plants in Yilong Lake is drawn.

scholarly journals Effects of water depth on the growth of nelumbo nucifera gaertn. Seedlings

1970 ◽  
Vol 19 (2) ◽  
pp. 111-118
Author(s):  
Md Almujaddade Alfasane ◽  
Moniruzzaman Khondker ◽  
ZN Tahmida Begum
Keyword(s):  
Growth Rate ◽  
Shallow Water ◽  
Leaf Area ◽  
Water Depth ◽  
Deep Water ◽  
Soluble Reactive Phosphorus ◽  
Nelumbo Nucifera ◽  
Maximum Height ◽  
Poor Growth ◽  
Water Culture

Water depth showed significant effect on the growth of Nelumbo nucifera Gaertn. in deep and shallow water culture pits. In deep water culture pit, the leaf area showed its highest growth rate of 21.84 ± 2.89 cm2/day in summer and petiole length showed highest growth rate of 0.34 ± 0.10 cm/day in monsoon. The plantlets grown in shallow water culture pit showed highest growth rate of leaf area of 8.75 ± 0.91 cm2/day in summer and the length of the petiole was highest in monsoon (0.25 ± 0.03 cm/day). Comparatively highest growth was observed in deep water culture pit rather than that of shallow water. Highest growth of the plant and flowering were found to be associated with higher water depth (100 cm) where the plant grew up to a height of about 1.5 m and maximum leaf diameter was 50 cm. Poor growth of the plant with no flowering was in shallow water depth (20 cm) where maximum height of the plant was about 0.5 m and leaf diameter was 25 cm. Although the concentrations of NO3?N, soluble reactive phosphorus, soluble reactive silicate, planktonic chl a and phaeopigment were in higher amount in shallow water culture pit but due to shallow depthness plant showed poor growth and no flowering.    Key words: Water depth; Limnological factors; Growth; Nelumbo nucifera DOI: http://dx.doi.org/10.3329/dujbs.v19i2.8952 DUJBS 2010; 19(2): 111-118

scholarly journals Sex-specific plasticity of reproductive allocation in response to water depth in a clonal, dioecious macrophyte

2019 ◽  
Vol 106 (1) ◽  
pp. 42-50 ◽  
Author(s):  
Lei Li ◽  
Spencer C. H. Barrett ◽  
Zhiping Song ◽  
Jiakuan Chen
Keyword(s):  
Water Depth ◽  
Reproductive Allocation ◽  
Response To Water

Effect of water depth on population parameters of a Typha glauca stand

1992 ◽  
Vol 70 (2) ◽  
pp. 349-351 ◽  
Author(s):  
I. Waters ◽  
J. M. Shay
Keyword(s):  
Water Depth ◽  
Shoot Density ◽  
Depth Range ◽  
Population Parameters ◽  
Shoot Height ◽  
Frequency Distributions ◽  
Shoot Size ◽  
Shoot Mass ◽  
Response To Water ◽  
Typha Glauca

The response of a Typha glauca stand to a water depth gradient was studied in a small marsh pond in Delta Marsh, Manitoba. Weekly density counts and height measurements were made from May to October 1986 in permanent quadrats at five depths from 25 to 100 cm. Shoot mass was estimated from shoot height using a regression model based on destructive analyses. Shoot density declined significantly from 41 shoots/m2 at 25 cm to 12 shoots/m2 at 85 cm but increased at 100 cm to 38 shoots/m2. Shoot mass increased in shoots growing at water depths from 25 to 65 cm, resulting in relatively constant stand biomass over this depth range. Stand biomass declined at 85 cm and reached its maximum (1789.8 g/m2) at 100 cm. Frequency distributions of shoot size categories based on height deviated from normality and were negatively skewed at all depths, with the greatest skewness occurring at 100 cm. These population parameters were interpreted as evidence of a plastic population response to water depth. Key words: clonal macrophyte, frequency distributions, plasticity, shoot density, Typha glauca, water depth.

Phenotypic plasticity in Phragmites australis as a functional response to water depth

2001 ◽  
Vol 69 (2-4) ◽  
pp. 127-145 ◽  
Author(s):  
Viveka Vretare ◽  
Stefan E.B Weisner ◽  
John A Strand ◽  
Wilhelm Granéli
Keyword(s):  
Phenotypic Plasticity ◽  
Functional Response ◽  
Phragmites Australis ◽  
Water Depth ◽  
Response To Water

1123: Natural History and Growth Characteristics of Oncocytomas Under Active Surveillance

2006 ◽  
Vol 175 (4S) ◽  
pp. 361-361
Author(s):  
Paul L. Crispen ◽  
Rosalia Viterbo ◽  
Richard E. Greenberg ◽  
David Y.T. Chen ◽  
Robert G. Uzzo
Keyword(s):  
Natural History ◽  
Active Surveillance ◽  
Growth Characteristics

Effect of Nelumbo nucifera on nitric oxide production and co-stimulatory molecules

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
D Mukherjee ◽  
TN Khatua ◽  
A Biswas ◽  
T Biswas ◽  
BP Saha ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Nelumbo Nucifera ◽  
Nitric Oxide Production ◽  
Oxide Production
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