Dataset DOI: 10.5061/dryad.h70rxwf0x

Description of the data and file structure

A questionnaire survey (98 respondents; 16 Sep–24 Oct 2025) of Danish municipalities, Nature Agency districts, national parks, and private nature foundations on invasive plant species control. Covers 8 questions: whether invasive species are controlled and which, follow-up frequency, effect evaluation, budget, control of problematic native species, and open comments. Data include response counts/percentages.

Files and variables

File: questionnaire_responses_invasiveplants_EN_by_type_ano.xlsx

Description: 8 questions and answers from municipalities and designated nature areas. Geographic scope: Denmark. All 98 municipalities invited; responses also received from Danish Nature Agency (Naturstyrelsen) forest districts, national parks, private nature funds ("fonde"), and the Danish Defence (Forsvaret)). The workbook contains 8 worksheets, one for each question. The answers are split by municipalities and designated natural areas.

Variables:

• Answer Choices: The response option/species/category label
• % of answered: Proportion of respondents to that question who selected this option
• % of group total: Proportion of total respondents in the group who selected this option
• N respondents: Count of respondents who selected this option

Code/software

Excel

Human subjects data

It is a questionnaire from municipalities, identified with a number. There is consent to publish.