Phosphorus cycling in a dense Potamogeton pectinatus L. Bed

Oecologia ◽  
1981 ◽  
Vol 49 (1) ◽  
pp. 56-66 ◽  
Author(s):  
C. Howard-Williams ◽  
B. R. Allanson
Keyword(s):  
Phosphorus Cycling ◽  
Potamogeton Pectinatus

EARLY PALEOZOIC BIOTURBATION AND FEEDBACKS ON PHOSPHORUS CYCLING

2020 ◽  
Author(s):  
Lidya Tarhan ◽  
Keyword(s):  
Phosphorus Cycling ◽  
Early Paleozoic

Crop residue application at low rates could improve soil phosphorus cycling under long-term no-tillage management

2021 ◽  
Vol 57 (4) ◽  
pp. 499-511
Author(s):  
Guohui Wu ◽  
Kai Wei ◽  
Zhenhua Chen ◽  
Dongqi Jiang ◽  
Hongtu Xie ◽  
...  
Keyword(s):  
Crop Residue ◽  
Soil Phosphorus ◽  
Phosphorus Cycling ◽  
No Tillage

Acrolein Reduces Biomass and Seed Production of Potamogeton pectinatus in Irrigation Channels

2004 ◽  
Vol 18 (3) ◽  
pp. 605-610 ◽  
Author(s):  
Diego J. Bentivegna ◽  
Osvaldo A. Fernández ◽  
María A. Burgos
Keyword(s):  
Plant Growth ◽  
Field Experiments ◽  
Plant Biomass ◽  
Treatment Plant ◽  
Irrigation District ◽  
Potamogeton Pectinatus ◽  
Individual Plant ◽  
Plant Weight ◽  
The Third ◽  
Irrigation Channels

Chemical weed control with acrolein has been shown to be a lower cost method for reducing submerged plant biomass of sago pondweed in the irrigation district of the Lower Valley of Rio Colorado, Argentina (39°10′S–62°05′W). However, no experimental data exist on the effects of the herbicide on plant growth and its survival structures. Field experiments were conducted during 3 yr to evaluate the effect of acrolein on growth and biomass of sago pondweed and on the source of underground propagules (i.e., rhizomes, tubers, and seeds). Plant biomass samples were collected in irrigation channels before and after several herbicide treatments. The underground propagule bank was evaluated at the end of the third year. Within each treatment, plant biomass was significantly reduced by 40 to 60% in all three study years. Rapid new plant growth occurred after each application; however, it was less vigorous after repeated treatments. At the end of the third year at 3,000 m downstream from the application point, plant biomass at both channels ranged from 34 to 3% of control values. Individual plant weight and height were affected by acrolein treatments, flowering was poor, and seeds did not reach maturity. After 3 yr, acrolein did not reduce the number of tubers. However, they were significantly smaller and lighter. Rhizomes fresh weight decreased by 92%, and seed numbers decreased by 79%. After 3 yr of applications, operational functioning of the channels could be maintained with fewer treatments and lower concentrations of acrolein.

Phosphorus cycling in freshwater lake sediments: Influence of seasonal water level fluctuations

2021 ◽  
pp. 148383
Author(s):  
Xiancang Wu ◽  
Teng Ma ◽  
Yao Du ◽  
Qianqian Jiang ◽  
Shuai Shen ◽  
...  
Keyword(s):  
Water Level ◽  
Lake Sediments ◽  
Freshwater Lake ◽  
Phosphorus Cycling ◽  
Water Level Fluctuations

scholarly journals The role of planktonic bacteria in phosphorus cycling in lakes - Sink and link

1993 ◽  
Vol 38 (7) ◽  
pp. 1539-1544 ◽  
Author(s):  
Olav Vadstein ◽  
Yngvar Olsen ◽  
Helge Reinertsen ◽  
Arne Jensen
Keyword(s):  
Phosphorus Cycling ◽  
Planktonic Bacteria

Application of Box-Behnken design in optimization of allelopathic effects of Potamogeton pectinatus against Microcystis aeruginosa

2014 ◽  
Vol 20 (5) ◽  
pp. 344-349 ◽  
Author(s):  
Nan Zhang ◽  
Min Ji ◽  
Tao Pan ◽  
Changhong Sun
Keyword(s):  
Microcystis Aeruginosa ◽  
Potamogeton Pectinatus ◽  
Box Behnken Design ◽  
Allelopathic Effects

scholarly journals Experimental Investigations of Interactions between Sand Wave Movements, Flow Structure, and Individual Aquatic Plants in Natural Rivers: A Case Study of Potamogeton Pectinatus L.

Water ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1166 ◽  
Author(s):  
Łukasz Przyborowski ◽  
Anna Łoboda ◽  
Robert Bialik
Keyword(s):  
Flow Velocity ◽  
Three Dimensional ◽  
Potamogeton Pectinatus ◽  
Sand Wave ◽  
Experimental Investigations ◽  
Cross Sectional ◽  
Bending Tests ◽  
Long Duration ◽  
Elevation Changes

Long-duration measurements were performed in two sandy bed rivers, and three-dimensional (3D) flow velocity and bottom elevation changes were measured in a vegetated area and in a clear region of a river. Detailed flow velocity profiles downstream and upstream of a single specimen of Potamogeton pectinatus L. were obtained and the bed morphology was assessed. Potamogeton plants gathered from each river were subjected to tensile and bending tests. The results show that the existence of the plants was influenced by both bottom and flow conditions, as the plants were located where water velocity was lower by 12% to 16% in comparison to clear region. The characteristics of the flow and sand forms depended on the cross-sectional arrangement of the river, e.g., dunes were approximately four times higher in the middle of the river than in vegetated regions near the bank. Furthermore, the studied hydrophytes were too sparse to affect water flow and had no discernible impact on the sand forms’ movements. The turbulent kinetic energy downstream of a single plant was reduced by approximately 25%. Additionally, the plants’ biomechanical characteristics and morphology were found to have adjusted to match the river conditions.

Cadmium-phosphorus cycling at the subtropical convergence south of New Zealand

1995 ◽  
Vol 51 (3) ◽  
pp. 223-237 ◽  
Author(s):  
Russell D. Frew ◽  
Keith A. Hunter
Keyword(s):  
New Zealand ◽  
Phosphorus Cycling

Physico-chemical controls on phosphorus cycling in two lowland streams. Part 1 – the water column

2004 ◽  
Vol 329 (1-3) ◽  
pp. 145-163 ◽  
Author(s):  
D.J Evans ◽  
P.J Johnes
Keyword(s):  
Water Column ◽  
Phosphorus Cycling ◽  
Lowland Streams ◽  
Physico Chemical
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