Hansen, R.R. & Strandberg, M.T. 2021. Truede og sjældne arter i Nationalpark Thy. Forslag til forskningsbaseret forvaltningsplan baseret på arternes ressourcebehov. Aarhus Universitet, DCE – Nationalt Center for Miljø og Energi, 114 s. - Teknisk rapport nr. 207. http://dce2.au.dk/pub/TR207.pdf
This report presents the first proposals for management recommendations that will anticipate resource requirements for a broad composition of rare and endangered species of plants, fungi, mammals, birds, reptiles and insects ( a total of 34 red list-assessed species, of which 31 are redlisted in the categories CR, EN, VU and NT1). Not all species' resource requirements can be accommodated by applying the same management measures. It is the purpose of the project to become more aware of the contradictions between species’ requirements in order to make choices about the type and scope of management initiatives that cater to many species groups simultaneously. The resource habitat concept has been used to assess how best to ensure good living conditions for endangered species in National Park Thy. Therefore, the concept has initially been presented where all the necessary resources to complete a full life cycle are included in the description of the requirements of the selected species groups in relation to the habitat. The concept also includes the spatial and temporal distribution of resources. To the extent possible, the resource requirements of the selected 34 species have been quantified. Where we lack quantitative information about resource requirements, a more general description is stated. We have also considered whether it is necessary to provide quantitative knowledge in order to assess the effect of different conservation measures for the species in the future (i.e. a description of the need for more knowledge). Knowledge has been extracted about the species' known prevalence in the National park and about existing management measures that are typically carried out for the National park's most common types of nature as well as their effects on the species' resource habitats. In some cases, knowledge at national level has been lacking, and here foreign literature from similar ecosystems has been used. At the same time, the project identifies the overlap in the prevalence of many of the species as well as their resource requirements and threats. With this, it is possible to determine which conservation measures will benefit which species groups or may potentially be critical for others. Thus, the report provides a summary of the most important habitat types that host the selected 34 redlisted species in National Park Thy. In addition, an overview is presented of the most important resource requirements, threats and, thus, the most important recommendations for management in order to act against the most important threats to the redlisted species in the National park. Based on the collected knowledge of the species' resource requirements and the impact of the effects of the management measures, the first proposal for a protocol for registering resources that can support as wide a range of species as possible is presented in the final part of the report.
Species on the redlist fall under one of the following categories on the redlist: Regionally Extinct (RE), Critically Endangered (CR), Endangered (EN), Vulnerable (VU), Near Threatened (NT) or Data Deficient (DD). The redlist is a list of plant and animal species that are rare and in danger of disappearing or have already disappeared. The Danish Red List has been prepared by DCE/Department of Bioscience, Aarhus University following guideline from The International Nature Conservation organisation IUCN.
