Ikere Gorge Reservoir Ecological Assessment Data from Dry Season Survey

Four sampling sites in Ikere Gorge Reservoir, south-western Nigeria, were surveyed during the dry season for physicochemical parameters and biological assemblages. The dataset includes measurements for temperature, pH, dissolved oxygen, nutrients, electrical conductivity, hardness, phytoplankton, zooplankton, macrophytes, and fish. It was created by Peter Edemewe Ugege and last updated on 2026-05-15.

Use Cases

• Assess water quality gradients based on physicochemical parameters like dissolved oxygen and nutrients.
• Compare ecological balance across sites using Shannon–Wiener diversity indices for biological taxa.
• Identify relationships between nutrient enrichment and trophic productivity using principal component analysis.
• Classify reservoir trophic status using a simplified water quality index.
• Establish baseline conditions for reservoir monitoring based on integrated physicochemical and biological data.

Strengths

• Integrated dataset includes both physicochemical parameters and multiple biological assemblages (phytoplankton, zooplankton, macrophytes, fish).
• Multivariate statistical framework applied, with the first two principal components explaining 84.9% of total variance.
• Water quality index values (61–66) provide a concrete classification of the reservoir as mesotrophic with fair water quality.

Limitations

• Data coverage is limited to four sampling sites and a single dry season survey.
• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

figshare

Collection Method

Field survey at four sampling sites during the dry season.

Time Range

Dry season (specific year unknown).

Freshness

Last updated 2026-05-15 09:30:46; freshness should be verified.

Geography

Ikere Gorge Reservoir, south-western Nigeria.