Variation in wild rice (Zizania palustris) stands across northern Saskatchewan

1986 ◽  
Vol 64 (6) ◽  
pp. 1204-1211 ◽  
Author(s):  
O. W. Archibold ◽  
B. J. Weichel
Keyword(s):  
Water Depth ◽  
Wild Rice ◽  
Plant Performance ◽  
Stem Density ◽  
Individual Plant ◽  
The West ◽  
Zizania Palustris ◽  
Stand Productivity ◽  
Regional Trends ◽  
Northern Saskatchewan

Variations in wild rice (Zizania palustris L.) morphology and stand productivity have been evaluated for 20 sites across northern Saskatchewan. Although considerable within-stand variation occurred, significant between-site differences were also detected, and regional trends were clearly evident. Plant development was more rapid in the eastern part of the province, and harvest began about 1 week earlier here. However, in the west, individual plants were typically more robust, tillering was more common, and the number of florets borne on the panicle was generally larger. Consequently, potential seed production from an individual plant was highest in these western districts, although differences in stem density and seed weight at the various sites offset individual plant performance to some extent. Differences in water temperature and water depth occurred across the province in July, while in August, water depth, pH, and conductivity were significantly correlated with longitude. Water depth and pH were most strongly related to plant performance, shallower water and higher pH being characteristic of the western sites.

scholarly journals Effects of Water Depth and Temperature on the Seedling Growth of Wild Rice, Zizania palustris L.

1993 ◽  
Vol 62 (3) ◽  
pp. 414-418 ◽  
Author(s):  
Takuma GEMMA ◽  
Hideho MIURA ◽  
Katsumasa HAYASHI
Keyword(s):  
Seedling Growth ◽  
Water Depth ◽  
Wild Rice ◽  
Zizania Palustris

Hypoxic metabolism in wild rice (Zizania palustris): enzyme induction and metabolite production

1993 ◽  
Vol 89 (1) ◽  
pp. 165-171 ◽  
Author(s):  
Douglas G. Muench ◽  
O. William Archibold ◽  
Allen G. Good
Keyword(s):  
Enzyme Induction ◽  
Wild Rice ◽  
Metabolite Production ◽  
Zizania Palustris

Wild rice (Zizania palustris L.) prevents atherogenesis in LDL receptor knockout mice

2013 ◽  
Vol 230 (2) ◽  
pp. 284-292 ◽  
Author(s):  
Gangadaran Surendiran ◽  
ChunYan Goh ◽  
Khuong Le ◽  
Zhaohui Zhao ◽  
Fatemeh Askarian ◽  
...  
Keyword(s):  
Knockout Mice ◽  
Wild Rice ◽  
Ldl Receptor ◽  
Zizania Palustris ◽  
Ldl Receptor Knockout Mice

Toxicity of sulfide to early life stages of wild rice (Zizania palustris )

2017 ◽  
Vol 36 (8) ◽  
pp. 2217-2226 ◽  
Author(s):  
Douglas J. Fort ◽  
Kevin Todhunter ◽  
Troy D. Fort ◽  
Michael B. Mathis ◽  
Rachel Walker ◽  
...  
Keyword(s):  
Wild Rice ◽  
Early Life ◽  
Life Stages ◽  
Early Life Stages ◽  
Zizania Palustris

scholarly journals ZEEBRUGGE'S MAIN BREAKWATERS

1982 ◽  
Vol 1 (18) ◽  
pp. 105
Author(s):  
L.V. Van Damme
Keyword(s):  
Water Depth ◽  
Wave Breaking ◽  
Economic Benefit ◽  
Environmental Design ◽  
The West ◽  
Stability Performance ◽  
Final Design ◽  
Technical Risks ◽  
General Cargo ◽  
Concrete Cube

The design scheme of the Zeebrugge Outer Harbour, Belgium, consists mainly of two breakwaters protruding into the sea as far as 1,750 m beyond the existing mole or 3.000 m out from the coastline. The west outer breakwater is 4,450 m long, the east breakwater runs 4,300 m out from the seafront. The east outer harbour will accommodate terminals for liquid bulk products such as LNG. The west outer harbour will provide space to install two harbour bassins to suit general cargo, hazardous cargo, container and ferry traffic. In the paper emphasis is put on the environmental design conditions (wave height, wave period, water depth), the development of preliminary designs and the final design. Some design features such as dimensions, wave breaking carpet, armour units, workable limits in respect to rock grade, etc ... are discussed. By developing the design the rubble-mound breakwater has been judged to be the only viable alternative versus the caisson type breakwater, taking into account costs, technical risks, construction problems and flexibility under changing environmental conditions. The main feature of the breakwaters is that a huge concrete parapet will have been avoided. A so called flat semi-cube armour unit has been developed. The main advantage lies in the substantial economic benefit whilst maintaining the same stability performance as a concrete cube armour unit.

Submarine landslides in the west continental slope of the South China Sea and their tsunamigenic potential

2021 ◽  
Author(s):  
Xiaoyi Pan ◽  
Linlin Li ◽  
Hong Phuong Nguyen ◽  
Dawei Wang
Keyword(s):  
South China Sea ◽  
Shear Zone ◽  
Continental Slope ◽  
South China ◽  
Water Depth ◽  
Red River ◽  
Submarine Landslides ◽  
The West ◽  
Tsunami Waves ◽  
Central Vietnam

<p>The 109 meridian fault is located in the west of the South China Sea (SCS) connecting to the offshore Red River Shear Zone. The evolution processes of the 109 meridian fault: striking-uplifting-subsidence of adjacent basin led to a nearly 1000m sharp bathymetric difference in the offshore region of central Vietnam. Combined with the high sediment input from numerous montane rivers in the rising hinterland, the continental slope near central Vietnam possesses the ideal condition for developing submarine landslides. Seismic data indicates many submarine landslides were developed along the steep continental slope. In this study, we analyze the possible trigger mechanisms of these landslides based on the local geological background and sedimentary environment, and assess their tsunamigenic potential along the coast of the Southern Central Vietnam (SCV). We point out that the landslide failures in this region could be triggered by several mechanisms, including seismic activities in the offshore SCV, volcanic activities, gas seep on the slope and the relative sea-level changes. The seismic and volcanic activities are related directly to the late middle Miocene volcanism generated by the change from left- to right-lateral motion on the Red River Shear Zone, showing that tectonism play a significant role in the generation of submarine landslide in the western continental slope of the SCS. To estimate the impact of tsunami waves on SCV coastline, we use two numerical models—NHWAVE and FUNWAVE-TVD to model 4 representative landslides with volume ranging between 1-4km<sup>3</sup> and water depth of 300-1000m. The submarine landslides were treated as rigid slump and deformable slide corresponding to two different sedimentary environments. Our results show that the tsunami waves generated by rigid slump can reach up to 20m height in the landslide source area and arrive earlier to the coast of SCV than waves generated by deformable slide. Among these simulated scenarios, tsunami waves generated by the worst-case scenario arrive at the populated cities including Quy Nhơn (109.3°E,13.77°N), Tuy Hòa (109.37°E ,13.08°N) and Vung Ro Bay (109.43°E，12.86°N) in less than 25mins with maximum height of 5m. It is worth mentioning that the Vung Ro Bay will be affected by tsunami waves in all simulated scenarios. We quantify the influence of landslide characteristics (volume, water depth and material) and highlight the local effect of coastal bathymetry on the tsunami generation and propagation which lead to different hazard level of SCV coast.</p>

Effects of Giant Burreed (Sparganium eurycarpum) and Shade on Wild Rice (Zizania palustris)

Weed Science ◽  
1987 ◽  
Vol 35 (5) ◽  
pp. 640-646 ◽  
Author(s):  
Sharon A. Clay ◽  
Ervin A. Oelke
Keyword(s):  
Wild Rice ◽  
Dry Weight ◽  
Fertilizer Application ◽  
Shoot Density ◽  
Growth And Yield ◽  
Zizania Palustris ◽  
Major Mechanism ◽  
Panicle Number ◽  
In The Wild ◽  
Sparganium Eurycarpum

Studies were conducted at Grand Rapids, MN, to determine the effect of giant burreed (Sparganium eurycarpumEngelm. # SPGEU) planted at 6, 12, and 24 corms/m2on wild rice (Zizania palustrisL. ‘K2′) growth and yield. Giant burreed, a spreading perennial, had shoot densities of 21, 29, and 42/m2at harvest for the 6, 12, and 24 corms/m2treatments, respectively. Wild rice yield and panicle number were reduced approximately 60% when giant burreed shoot density was 40/m2or higher when compared to the weed-free control. Giant burreed did not interfere with nutrient uptake of wild rice on a whole-plant basis, and increased N fertilizer application did not reduce losses in dry weight. Giant burreed reduced penetration of photosynthetically active radiation (PAR) from 2 to 35% in the wild rice canopy from the early tillering to the anthesis stage of wild rice development. In growth chamber studies, wild rice dry weight and panicle number were reduced by 46 and 65%, respectively, when wild rice was shaded for 12 weeks and compared to a full light treatment. Reduction of PAR penetration into the wild rice canopy appears to be the major mechanism of giant burreed interference with wild rice.

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