Macroinvertebrate Composition in Eight Welsh Upland Rivers (2013)

Welsh upland rivers provide data on macroinvertebrate composition and size from an experiment adding deciduous leaves to half of eight sampling reaches. The survey, organized by Dr Isabelle Durance, collected monthly samples from January to April 2013 at Llyn Brianne and Plynlimon sites to examine biodiversity response to leaf addition in moorland and conifer forested rivers.

Use Cases

• Analyze macroinvertebrate composition changes before and after deciduous leaf addition to assess treatment effects.
• Compare invertebrate biomass between control reaches and those with leaf addition across contrasting land-use types.
• Examine monthly sampling data from January to April 2013 to track temporal community dynamics in response to the experiment.

Strengths

• Data from eight distinct sampling reaches across two major Welsh upland sites provides spatial replication.
• Monthly sampling from January to April 2013 captures seasonal dynamics within the experimental timeframe.
• Experimental design includes controlled comparison between leaf addition and control reaches.

Limitations

• Temporal coverage is limited to four months within a single year (2013), restricting long-term trend analysis.
• Geographic scope is confined to eight reaches in two Welsh locations, limiting generalizability to other regions.
• Sample data and column specifics are unavailable, hindering assessment of data structure and variable detail.

Provenance

Source

Environmental Information Data Centre

Collection Method

Surber net sampling for monthly benthic macroinvertebrate collection, with samples processed and sorted by Dr Hugh Feeley and Marian Pye.

Time Range

2013 (January to April)

Freshness

null

Geography

Eight sampling reaches in Welsh upland rivers at Llyn Brianne and Plynlimon sites.