README FILE
Dataset Title: Ingoldisthorpe and Langham Treatment Wetland Sediment Phosphorus Dynamics Dataset (2025)

GENERAL INFORMATION

Title of Dataset
Ingoldisthorpe and Langham Treatment Wetland Sediment Properties and Phosphorus Dynamics Dataset (2025)

Date of Data Collection
2025

Location of Data Collection
Ingoldisthorpe Treatment Wetland
Langham Treatment Wetland

Keywords
Treatment wetlands, sediment phosphorus, phosphorus fractionation, sediment chemistry, phosphorus retention, nutrient dynamics, ecological engineering, wastewater treatment, sediment geochemistry, surface flow wetlands

Data Collection and Analysis
Ayisha Affo Souleymane
PhD Researcher
School of Water, Energy and Environment
Cranfield University

Collaborating Organisations
Anglian Water
Norfolk Rivers Trust

Supervisory Institution
Cranfield University

Funding Source
This dataset was generated as part of a PhD research project investigating phosphorus retention, sediment phosphorus storage, and nutrient dynamics within treatment wetlands.

METHODOLOGICAL INFORMATION

Description of Dataset
This dataset contains sediment chemistry and phosphorus-related sediment characterisation data collected from the Ingoldisthorpe and Langham treatment wetlands during 2025.

The dataset includes:

* sediment phosphorus concentrations,
* sediment physicochemical properties,
* nutrient concentrations,
* metal concentrations,
* and associated sediment geochemical characteristics.

The dataset was developed to investigate:

* phosphorus storage mechanisms,
* sediment phosphorus stability,
* mineral-associated phosphorus retention,
* and long-term phosphorus accumulation processes within treatment wetlands.

Description of Data Collection
Sediment samples were collected from multiple locations throughout both treatment wetland systems, including inlet, intermediate, and outlet compartments.

Sediment samples were processed and analysed prior to laboratory characterisation.

Measured parameters may include:

* Total sediment phosphorus
* Sediment iron (Fe)
* Sediment aluminium (Al)
* Sediment calcium (Ca)
* Total carbon
* Total nitrogen
* Organic matter content
* Sediment depth
* Sediment moisture content
* Bulk density

Analytical Methods

Sediment Sampling
Sediment samples were collected using standard wetland sediment sampling procedures.

Sediment Preparation
Sediment samples were air dried, homogenised, and sieved prior to analysis.

Sediment Chemistry Analysis
Sediment chemistry analyses were undertaken using standard laboratory analytical procedures.

Metal and nutrient analyses were undertaken using spectrophotometric and instrumental analytical methods where applicable.

Carbon and Nitrogen Analysis
Total carbon and total nitrogen analyses were undertaken using elemental analysis procedures where applicable.

Experimental Conditions
Sampling was undertaken under operational full-scale wastewater treatment wetland conditions during 2025.

Quality Assurance / Quality Control (QA/QC)

* Replicate measurements were collected where applicable.
* Sediment preparation procedures were standardised across samples.
* Laboratory analyses followed standard analytical procedures.
* Samples were analysed using calibrated instrumentation.
* Data were checked for transcription and calculation errors prior to analysis.
* Missing values were retained as blank cells where applicable.

SHARING AND ACCESS INFORMATION

License and Restrictions
Dataset generated as part of doctoral research at Cranfield University in collaboration with Anglian Water and Norfolk Rivers Trust.

Users should acknowledge Cranfield University, Anglian Water, and Norfolk Rivers Trust where appropriate.

Associated Publications
This dataset contributes to ongoing PhD research examining sediment phosphorus storage, geochemical controls, and nutrient retention mechanisms within tertiary surface flow treatment wetlands.

Recommended Citation
Souleymane, A. A. (2026). Ingoldisthorpe and Langham Treatment Wetland Sediment Phosphorus Dynamics Dataset (2025). Cranfield University.

FILE NAME STRUCTURE AND FORMAT

File Name
ING_LAN_TW_SedimentPDynamics_2025_v01.csv

File Structure
Single comma-separated values (CSV) file containing sediment chemistry and sediment characterisation measurements.

File Format
CSV (Comma-Separated Values)

Date Format
YYYY-MM-DD where applicable.

DATA-SPECIFIC INFORMATION

Dataset Description
The dataset contains sediment chemistry and sediment phosphorus-related measurements collected from multiple locations within the Ingoldisthorpe and Langham treatment wetlands during 2025.

Variable Definitions

Sediment Variables

* Total Sediment P = Total sediment phosphorus concentration
* Sediment Fe = Sediment iron concentration
* Sediment Al = Sediment aluminium concentration
* Sediment Ca = Sediment calcium concentration
* Total C = Total carbon concentration
* Total N = Total nitrogen concentration
* Organic matter = Sediment organic matter content
* Bulk density = Sediment bulk density
* Sediment depth = Sediment depth measurement

Units of Measurement
Sediment concentrations may be reported in milligrams per gram (mg/g), percentage composition (%), or grams per kilogram (g/kg) unless otherwise stated.

Missing Data Codes
Blank cells indicate unavailable or missing measurements.

Abbreviations

* TW = Treatment Wetland
* TP = Total Phosphorus
* TN = Total Nitrogen
* Fe = Iron
* Al = Aluminium
* Ca = Calcium

VERSIONING

Version
Version 1.0

Last Updated
2026-05-29

Change Log
Version 1.0 – Initial compilation and documentation of Ingoldisthorpe and Langham treatment wetland sediment phosphorus dynamics dataset.
