The historical ecology approach in species conservation - Identifying suitable habitat management for the endangered clouded Apollo butterfly (Parnassius mnemosyne L.) in Sweden

Sammanfattning

A core task in biodiversity conservation is to protect and restore populations of endangered species. The analysis of causes of decline based on data sampled in declining populations in sub-optimal habitats risks overlooking necessary environmental factors because they are no longer present at the sites. It may therefore be necessary to search for conditions that were present before the species began to decline. We used an historical ecology approach to identify critical ecological needs for the endangered butterfly Clouded Apollo, Parnassius mnemosyne, in Sweden in relation to historical and current land use. The most suitable habitat structure and management was transformed into a plan for restoration and management, applied at two P. mnemosyne sites. The populations of P. mnemosyne and its host-plant, Corydalis solida, were monitored annually 2004–2014. Based on previous knowledge about P. mnemosyne, the Swedish plan for conservation of the species recommends regular clearings of shrubs and trees in order to maintain a mosaic tree-grassland habitat, and a limited of removal of ground biomass. Our analysis suggested an alternative management approach, late and rather intense grazing. The populations of P. mnemosyne and its host plant increased in response to this management regime and the butterfly started dispersing to new sites. We suggest a structured method for combining ecological and historical knowledge, which can reveal habitat conditions difficult to detect in the field today, but that are of crucial importance for successful species conservation.

Nyckelord

Parnassius mnemosyne; land-use history; historical ecology; grassland management; species conservation

Publicerad i

AIMS Environmental Science
2018, Volym: 5, nummer: 4, sidor: 244-272

SLU författare

• Westin, Anna

  • Institutionen för stad och land, Sveriges lantbruksuniversitet
    

• Lennartsson, Tommy

  • Institutionen för stad och land, Sveriges lantbruksuniversitet
    

Associerade SLU-program

SLU Centrum för biologisk mångfald, CBM


Globala målen

SDG15 Ekosystem och biologisk mångfald


UKÄ forskningsämne

Ekologi
Vilt- och fiskeförvaltning
Historia


Publikationens identifierare

DOI: https://doi.org/10.3934/environsci.2018.4.244

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/96105