You are here: Home / Measurements / Terrestrial / Invertebrates / Ground Predators (carabid beetles)

Ground Predators (carabid beetles)

The ECN ground predators protocol (IG)


Protocol file


Site types that use this protocol


The ground beetles (Carabidae) are a group of predatory invertebrates. They are monitored by ECN because they might amplify changes in their prey or respond differently to environmental change from butterflies and moths. Pitfall trapping has been used extensively and successfully for this group, and a well-developed protocol already exists. Even though it is known that problems exist in interpreting data from such traps, active programmes of standardisation are in progress. Analyses of existing data have shown that carabids can be sensitive indicators of changes in management. Many beetle species are known to be sensitive to temperature changes.

Two-weekly sampling using pitfall traps is conducted.

Our field activities


This is the last of the busy months in terms of field work at terrestrial sites as the season for monitoring butterflies, frogs, grazing animals and bats draws to an end. In rivers and lakes we sample diatoms for the third time in the year. The usual year-round measurements are also made.

See all this month's field measurements...

Loch Neagh