Density, Diversity and Incidence of Deformities of Benthic Invertebrates Near a Vinyl Chloride Discharge Point Source in the Niagara River Watershed

2009 ◽  
pp. 663-663-18
Author(s):  
MD Dickman ◽  
G Rygiel
Keyword(s):  
Point Source ◽  
Vinyl Chloride ◽  
Benthic Invertebrates ◽  
Niagara River ◽  
River Watershed ◽  
Discharge Point

Teratogens in the Niagara River Watershed as Reflected by Chironomid (Diptera: Chironomidae) Labial Plate Deformities

1989 ◽  
Vol 24 (1) ◽  
pp. 47-80 ◽  
Author(s):  
Mike Dickman ◽  
Que Lan ◽  
Brett Matthews
Keyword(s):  
New York ◽  
Vinyl Chloride ◽  
High Frequency ◽  
Control Site ◽  
River Buffalo ◽  
Niagara River ◽  
River Watershed ◽  
Fused Teeth ◽  
Buffalo River ◽  
Three Rivers

Abstract Chironomids from three rivers within the Niagara River Watershed were sampled and divided into two groups: those with ligulae and those with labial plates. The latter group of chironomids (i.e. the Chironomini and Tanytarsini) were classified as either normal (no deformities in their labial plates), slightly deformed (slight asymmetries due to teeth which were missing or chipped) or grossly deformed (those with extra teeth, fused teeth, crossed teeth or large gaps between their teeth). Among the 1,062 chironomids taken from the 15 sample sites, 699 possessed labial plates and 14% of these (97) displayed gross deformities in the structure of their labial plate. Most of the chironomids displaying gross deformities came from areas in the Niagara River watershed where sediments were contaminated with a number synthetic teratogens. The highest frequency of chironomid labial plate deformities (47% gross deformities) occurred at the B.F. Goodrich Company’s discharge pipe. In 1986, 33 kg of vinyl chloride, (C2H3Cl), a known carcinogen, was released into the Welland River at this site. This substance is suspected of causing the high frequency of deformities observed at this site. The second highest frequency of chironomids with gross labial plate deformities occurred in the heavily industrialized section of the Buffalo River, (Buffalo, New York). Thirty-five percent of the Chironomini and Tanytarsini at the five sampling sites in the Buffalo River displayed gross deformities as compared to 9% at the “control” site. It was concluded that the frequency of chironomid labial plate deformities provides researchers with a useful index for evaluating sediments

Preliminary identification of watershed management strategies for the Houjing river in Taiwan

2010 ◽  
Vol 62 (7) ◽  
pp. 1667-1675 ◽  
Author(s):  
C. E. Lin ◽  
C. M. Kao ◽  
C. J. Jou ◽  
Y. C. Lai ◽  
C. Y. Wu ◽  
...  
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Point Source ◽  
Watershed Management ◽  
Carrying Capacity ◽  
Pollution Control ◽  
Point Source Pollution ◽  
Land Use Patterns ◽  
River Watershed ◽  
Use Patterns

The Houjing River watershed is one of the three major river watersheds in the Kaohsiung City, Taiwan. Based on the recent water quality analysis, the Houjing River is heavily polluted. Both point and non-point source (NPS) pollutants are the major causes of the poor water quality in the Houjing River. Investigation results demonstrate that the main point pollution sources included municipal, agricultural, and industrial wastewaters. In this study, land use identification in the Houjing River watershed was performed by integrating the skills of geographic information system (GIS) and global positioning system (GPS). Results show that the major land-use patterns in the upper catchment of the Houjing River watershed were farmlands, and land-use patterns in the mid to lower catchment were residential and industrial areas. An integrated watershed management model (IWMM) and Enhanced Stream Water Quality Model (QUAL2K) were applied for the hydrology and water quality modeling, watershed management, and carrying capacity calculation. Modeling results show that the calculated NH3-N carrying capacity of the Houjing River was only 31 kg/day. Thus, more than 10,518 kg/day of NH3-N needs to be reduced to meet the proposed water quality standard (0.3 mg/L). To improve the river water quality, the following remedial strategies have been developed to minimize the impacts of NPS and point source pollution on the river water quality: (1) application of BMPs [e.g. source (fertilizer) reduction, construction of grassy buffer zone, and land use management] for NPS pollution control; (2) application of river management scenarios (e.g. construction of the intercepting and sewer systems) for point source pollution control; (3) institutional control (enforcement of the industrial wastewater discharge standards), and (4) application of on-site wastewater treatment systems for the polishment of treated wastewater for water reuse.

The phylogenetic distribution of a transposable dioxygenase from the Niagara River watershed

1995 ◽  
Vol 4 (5) ◽  
pp. 593-604 ◽  
Author(s):  
C. H. NAKATSU ◽  
R. R. FULTHORPE ◽  
B. A. HOLLAND ◽  
M. C. PEEL ◽  
R. C. WYNDHAM
Keyword(s):  
Phylogenetic Distribution ◽  
Niagara River ◽  
River Watershed

Evidence of genotoxic substances in the Niagara river watershed

1991 ◽  
Vol 6 (1) ◽  
pp. 1-15 ◽  
Author(s):  
Que Lan ◽  
Mike Dickman ◽  
Mar Alvarez
Keyword(s):  
Niagara River ◽  
River Watershed

scholarly journals Validation of an agricultural non-point source (AGNPS) pollution model for a catchment in the Jiulong River watershed, China

2008 ◽  
Vol 20 (5) ◽  
pp. 599-606 ◽  
Author(s):  
Jianchang LIU ◽  
Luoping ZHANG ◽  
Yuzhen ZHANG ◽  
Huasheng HONG ◽  
Hongbing DENG
Keyword(s):  
Point Source ◽  
Jiulong River ◽  
River Watershed ◽  
Jiulong River Watershed

Study for Management of Non-point Source in Sooyeong River Watershed Using SWMM

2014 ◽  
Vol 14 (2) ◽  
pp. 327-336
Author(s):  
Jeonghoon Lee ◽  
Dookee Kang ◽  
Moojong Park ◽  
Sangdan Kim
Keyword(s):  
Point Source ◽  
River Watershed
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