Modelling potential success of conservation translocations of a specialist grassland butterfly

作者：Heikkinen Risto K^*; Poyry Juha; Virkkala Raimo; Bocedi Greta; Kuussaari Mikko; Schweiger Oliver; Settele Josef; Travis Justin M J

来源：Biological Conservation, 2015, 192: 200-206.

DOI：10.1016/j.biocon.2015.09.028

• Conservation translocation
• Dispersal
• Grassland conservation
• Dynamic modelling
• Population persistence
• Risk spreading

Success rates for conservation translocations of species are low and there is a need for increased understanding of how this activity is best applied. Here, using static species distribution models and a spatially-explicit dynamic simulation model, RangeShifter, we examine the impacts of habitat cover in recipient landscapes, allocation of individuals into multiple sites and species trait characteristics on the long-term fate of hypothetical translocations of a grassland specialist butterfly, Maniola jurtina, in Finland. While persistence of populations introduced to climatically suitable locations northwards of the current range can be increased by selecting sites with increasing habitat cover and by allocation of individuals to multiple release sites, local population growth rateis shown to be the key parameter in determining likely translocation success. We conclude that the long-term persistence of translocated habitat specialist butterflies, particularly with low growth rates, appears to be uncertain in modern-day fragmented grassland networks and that translocation activities should prioritize management that improves local growth rate.

• 出版日期2015-12