scholarly journals Impact factors and mechanisms of dissolved reactive phosphorus (DRP) losses from agricultural fields: A review and synthesis study in the Lake Erie basin

2020 ◽  
Vol 714 ◽  
pp. 136624 ◽  
Author(s):  
Xiaojing Ni ◽  
Yongping Yuan ◽  
Wenlong Liu
Keyword(s):  
Lake Erie ◽  
Impact Factors ◽  
Agricultural Fields ◽  
Dissolved Reactive Phosphorus ◽  
Reactive Phosphorus

scholarly journals High-Resolution Profiles of Dissolved Reactive Phosphorus in the Porewaters of Lake Sediments Assessed by DGT Technique

2014 ◽  
Vol 05 (08) ◽  
pp. 694-702
Author(s):  
Jian Wang ◽  
Jingtian Zhang ◽  
Qiong Xie ◽  
Fengyu Zan ◽  
Shengpeng Zuo ◽  
...  
Keyword(s):  
High Resolution ◽  
Lake Sediments ◽  
Dissolved Reactive Phosphorus ◽  
Reactive Phosphorus

scholarly journals Poultry Litter Ash Rate and Placement Affect Phosphorus Dissolution in a Horticultural Substrate1

2017 ◽  
Vol 35 (3) ◽  
pp. 117-127
Author(s):  
Daniel E. Wells ◽  
Jeffrey S. Beasley ◽  
Edward W. Bush ◽  
Lewis. A. Gaston
Keyword(s):  
Crop Production ◽  
Poultry Litter ◽  
Lantana Camara ◽  
Shoot Biomass ◽  
Horticultural Crops ◽  
P Loss ◽  
P Rate ◽  
Dissolved Reactive Phosphorus ◽  
Reactive Phosphorus ◽  
Poultry Litter Ash

Abstract Poultry litter ash (PLA) is a byproduct of bioenergy production and an effective P source for horticultural crops since it reduces P losses from container production due to its low P solubility. Experiments were conducted to determine effects of rate and placement of PLA on P loss from greenhouse crop production and growth and quality of two commonly-grown greenhouse crops, Verbena canadensis Britton ‘Homestead Purple' and Lantana camara L. ‘New Gold', by comparing two rates (140 and 280 g·m−3 P or 0.4 and 0.8 lb·yd−3) and two application methods (post-plant topdressed and pre-plant incorporated). Leachate-dissolved reactive phosphorus (DRP) concentrations were reduced by an average of 24% as P rate was reduced from 280 to 140 g·m−3, but were 134% less on average when PLA was topdressed instead of incorporated. Foliar P concentrations were less 33% and 44% for verbena and lantana, respectively when plants were topdressed compared to incorporated. Shoot biomass of verbena and lantana was 9% and 24% greater, respectively, when incorporating instead of topdressing PLA. As a P source, PLA should be pre-plant incorporated within the substrate at a total P rate between 140 g·m−3 (0.4 lb·yd−3) and 280 g·m−3 (0.8 lb·yd−3). Index words: phosphorus, poultry litter ash, Verbena canadensis Britton ‘Homestead Purple', Lantana camara L. ‘New Gold', dissolved reactive phosphorus. Species used in this study: ‘Homestead Purple' verbena (Verbena canadensis Britton); ‘New Gold' lantana (Lantana camara L.).

scholarly journals Total and soluble reactive phosphorus loadings to Lake Erie

2016 ◽  
Vol 42 (6) ◽  
pp. 1151-1165 ◽  
Author(s):  
Matthew J. Maccoux ◽  
Alice Dove ◽  
Sean M. Backus ◽  
David M. Dolan
Keyword(s):  
Lake Erie ◽  
Soluble Reactive Phosphorus ◽  
Reactive Phosphorus

Relationships of Phytoplankton Biomass with Soluble Nutrients, Primary Production, and Chlorophyll a in Lake Erie, 1970

1976 ◽  
Vol 33 (3) ◽  
pp. 601-611 ◽  
Author(s):  
M. Munawar ◽  
N. M. Burns
Keyword(s):  
Primary Production ◽  
Chlorophyll A ◽  
Phytoplankton Biomass ◽  
Lake Erie ◽  
Soluble Reactive Phosphorus ◽  
Distribution Patterns ◽  
Statistical Procedure ◽  
Annual Average ◽  
Average Distribution ◽  
Reactive Phosphorus

Comparison of the annual average distribution patterns of phytoplankton biomass, chlorophyll a, primary production, soluble reactive phosphorus, nitrate + nitrite, and ammonia concentrations revealed that these six variables had very similar distributions in Lake Erie during 1970. However, statistical analysis of the data only revealed a few consistent relationships between these variables. The phytoplankton biomass was correlated with chlorophyll a only in the summer and fall as was primary production with chlorophyll a and biomass. There was no correlation between these three variables during the spring. Also, there was no consistent relationship between biomass and soluble nutrients. The primary production and activity coefficient (mg Cassimilated per milligram phytoplankton biomass per day) were found to be unrelated to temperature. The statistical procedure of factor analysis showed that in the spring, primary production correlated with the phosphorus and nitrogen soluble nutrients only, whereas during summer, primary production correlated with biomass, chlorophyll a, the major plankton groups (Cyanophyta, Chlorophyta, Chrysomonadinae, and Diatomeae), and the phosphorus nutrients. In the fall, production was positively correlated with phytoplankton biomass and with the Chlorophyta in particular. The use of chlorophyll a and temperature as variables in the equation to estimate phytoplankton growth in Lake Erie was found to be questionable.

Influence of Upwellings, Storms, and Generating Station Operation on Water Chemistry and Plankton in the Nanticoke Region of Long Point Bay, Lake Erie

1990 ◽  
Vol 47 (7) ◽  
pp. 1434-1445 ◽  
Author(s):  
T. G. Dunstall ◽  
J. C. H. Carter ◽  
B. P. Monroe ◽  
G. T. Haymes ◽  
R. R. Weiler ◽  
...  
Keyword(s):  
Water Chemistry ◽  
Surface Waters ◽  
Lake Erie ◽  
Organic Nitrogen ◽  
Inorganic Nitrogen ◽  
Lake Surface ◽  
Cooling Process ◽  
Short Term ◽  
Total Inorganic Nitrogen ◽  
Reactive Phosphorus

Storms and upwellings resulted in significant alterations to the aquatic environment in the Long Point Bay region of Lake Erie, contributing to short-term variability in water chemistry and plankton. Both storms and upwellings resulted in nutrient enrichment (filtered reactive phosphorus, total inorganic nitrogen, reactive silicates and organic nitrogen) in lake surface waters during the period of lake warming, prior to mid-August. Storms and upwellings also differentially affected the distributions of specific zooplankton taxa in the lake surface stratum. The most prominent effect was the increased abundance of Diacyclops bicuspidatus thomasi during upwellings, particularly towards shore. The once-through cooling process of the generating station also affected zooplankton distributions, most notably that of D. bicuspidatus thomasi, with a nearshore increase in abundance that was similar to the influence exerted by upwelling.

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