DATASET TITLE
Zooplankton potential filtration rates across habitats of the Lower Oder River system (November 2023 – December 2025)

DESCRIPTION
This dataset contains estimated potential filtration rates of zooplankton (rotifers, cladocerans, and copepods) across multiple habitats within the Lower Oder River system. Filtration rates were calculated by combining field-measured abundance with taxon-specific filtration rates obtained from the literature.

OBJECTIVE
The dataset quantifies spatial and seasonal variation in zooplankton community potential filtration rates across different habitats.

GEOGRAPHIC COVERAGE
Sampling sites were distributed along the river between approximately 52.067°N and 53.206°N latitude and 14.126°E and 14.758°E longitude.
System: Lower Oder River
Habitats: main channel (includes groynes, shore, mid-channel), backwaters, and floodplain waters

Number of sites:
Main channel: 15
Backwaters: 5
Floodplain waters: 9

TEMPORAL COVERAGE
 November 2023 - December 2025

SAMPLING DESIGN
Zooplankton sampling and abundance estimation followed the methodology described in the associated abundance dataset (SP08a_Zooplankton_Abundance_2023-2025.csv).

FILTRATION RATE CALCULATION
Community filtration rates were calculated by multiplying taxon-specific abundance (ind/L) with corresponding filtration rates from the literature and summing across taxa.
Filtration rate values were compiled for 68 taxa. For taxa without available values, filtration rates from closely related taxa were used.

DATA ORGANIZATION
Each row represents a single sample (linked by SAMPLE_CODE). Filtration rates are provided per taxon and as total community filtration.

File:
data/SP08a_Zooplankton_CommunityFiltrationRate_2023-2025.csv

VARIABLES
Detailed descriptions of variables and units are provided in metadata/DataDictionary_CommunityFiltrationRate.docx.

TAXONOMIC COVERAGE
Rotifera, Cladocera, and Copepoda

INTERPRETATION AND LIMITATIONS
The reported filtration rates represent potential filtration capacity derived from literature values and were not directly measured in the field.
Environmental variability may affect applicability of literature values.
Species composition and life stages may differ from those in source studies.
Filtration rates may vary over time and space, but static values were applied.
Methodological differences among studies may introduce uncertainty.
Filtration rates are primarily derived from lake and laboratory studies and should be interpreted with caution for river ecosystems.

QUALITY CONTROL
Filtration rates and unit conversions were checked for consistency. Calculations were cross-validated.

SOFTWARE
Microsoft Excel (data processing and filtration rate calculations)

DATA LICENSE
Creative Commons Attribution 4.0 International (CC BY 4.0)

CONTACT
Name: Abrehet Kahsay Mehari
Email: abrehetkahsay66@gmail.com

