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Related Experiment Video

Updated: May 28, 2026

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

Published on: July 11, 2025

Centurial Degradation of Insect Diversity in Lowland Rivers: Partial Recovery but Restructuration.

Jindřiška Bojková¹, Selma de Donnová¹, Alžbeta Devánová¹

¹Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic.

Global Change Biology

|May 27, 2026

Summary

Global biodiversity loss in lowland rivers has been severe since the mid-20th century. Despite some recovery due to improved water quality, persistent pollution and climate change limit ecological restoration.

Keywords:

Ephemeroptera Plecoptera Trichoptera biodiversity loss insect extinction long‐term trends

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Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates

Published on: January 13, 2023

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Last Updated: May 28, 2026

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

A Concoction Pipeline for Generating Molecular Operational Taxonomic Units (MOTUs) Among Riparian and Aquatic Beetles

Published on: July 11, 2025

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates

Automatic Image Processing to Determine the Community Size Structure of Riverine Macroinvertebrates

Published on: January 13, 2023

Area of Science:

Ecology
Environmental Science
Freshwater Biology

Background:

Lowland rivers face significant threats from human activities, impacting global biodiversity.
Historical data scarcity hinders accurate assessment of biodiversity loss since 1950.
Hydromorphological modifications have extensively altered river ecosystems over centuries.

Purpose of the Study:

To assess long-term biodiversity changes in Czech lowland rivers.
To investigate the impact of environmental factors on riverine biodiversity.
To understand the drivers of biodiversity decline and recovery patterns.

Main Methods:

Compiled 140-year time series data for Ephemeroptera, Plecoptera, and Trichoptera in nine Czech lowland rivers.
Integrated 60 years of water quality and hydroclimatic data.
Analyzed trends in alpha and gamma diversity and species turnover.

Main Results:

Both alpha and gamma diversity declined until the 1980s, with a partial recovery post-2000.
Water quality improvements partially offset biodiversity loss, but recovery remains limited.
Persistent pollution, climate change, and species pool depletion hinder full ecological restoration.

Conclusions:

Significant biodiversity loss occurred in the first half of the 20th century, with limited recovery.
Riverine assemblages are undergoing compositional changes, making a return to historical baselines unlikely.
Urgent conservation actions are needed to prevent further decline and preserve ecosystem services.