# Defining the decline: a glossary relevant to insect decline

## TL;DR

Insects are declining worldwide, and this paper provides a standardized glossary to improve communication about insect biodiversity loss.

## Contribution

The paper introduces a standardized glossary of terms related to insect biodiversity loss.

## Key findings

- Insect declines have global ecological implications.
- Standardized terminology is needed for effective communication.
- The Entomological Society of America is positioned to lead this effort.

## Abstract

Insects are declining in abundance and species richness, globally. This has broad implications for the ecology of our planet, many of which we are only beginning to understand. Comprehensive, large-scale efforts are urgently needed to quantify and mitigate insect biodiversity loss. Because there is broad interest in this topic from a range of scientists, policymakers, and the general public, we posit that such endeavors will be most effective with precise and standardized terms. The Entomological Society of America is the world’s largest association of professional entomologists and is ideally positioned to lead the way on this front. We provide here a glossary of definitions for biodiversity loss terminology. This can be used to enhance and clarify communication among entomologists and others with an interest in addressing the multiple overlapping research, policy, and outreach challenges surrounding this urgent issue.