River Herbicide Concentrations in Humber and Tweed Catchments

Micro-organic herbicide levels in river water for 21 sites across the Humber and Tweed catchments. Data includes concentrations for Phenyl urea and Phenoxy acid compounds like 2,4-Dichlorophenoxyacetic acid, Diuron, and Isoproturon, collected weekly from 1994 to 1997. The dataset was produced by the Land Ocean Interaction Study project.

Use Cases

• Analyze temporal trends in 2,4-Dichlorophenoxyacetic acid and Mecoprop concentrations across six sites from December 1994 to September 1995.
• Compare Phenyl urea herbicide levels, such as Chlorotoluron and Linuron dissolved, between twelve Humber sites and three Tweed catchment sites.
• Model the environmental persistence of Diuron dissolved and Isoproturon dissolved using weekly sampling data from 1994-1997.
• Assess spatial variation in Phenoxy acid herbicide data across sites S1, U3, N4, W5, and O6.

Strengths

• Covers 21 distinct sampling sites across two major UK river catchments.
• Provides multi-year temporal coverage from 1994 to 1997.
• Includes measurements for eight specific herbicide compounds, detailing analytical methods like High Performance Liquid Chromatography.

Limitations

• Sampling was halted intermittently when samples could not be processed quickly, creating potential data gaps.
• Coverage for specific compounds is inconsistent; Linuron dissolved was only measured from April to October 1994.
• Data is temporally stale, representing conditions from the mid-1990s.

Provenance

Source

Environmental Information Data Centre, Land Ocean Interaction Study project (LOIS).

Collection Method

Samples collected in chromic acid-washed glass bottles, analyzed via High Performance Liquid Chromatography and Gas Chromatography by York University, Institute for Freshwater Ecology, and Institute for Hydrology.

Time Range

1994 to 1997.

Freshness

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Geography

Humber and Tweed river catchments, United Kingdom.