Habitat models and habitat connectivity analysis for butterflies and burnet moths – The example of Zygaena carniolica and Coenonympha arcania

Habitat requirements for the conservation of wood cricket (Nemobius sylvestris) (Orthoptera: Gryllidae) on the Isle of Wight, UK

“…Indications for this are found in habitat fragmentation studies that have been undertaken at a range of different spatial scales, revealing the relative importance of within-patch habitat compared to spatial measures such as patch size and isolation between habitat fragments (e.g. Rukke and Midtgaard 1998;Ranius 2000;Binzenhofer et al 2005). For example, in a study on a burnet moth species in an abandoned agricultural landscape in Germany, Binzenhofer et al (2005) found that presence of the species was mainly explained by total nectar plant cover (i.e.…”

“…Rukke and Midtgaard 1998;Ranius 2000;Binzenhofer et al 2005). For example, in a study on a burnet moth species in an abandoned agricultural landscape in Germany, Binzenhofer et al (2005) found that presence of the species was mainly explained by total nectar plant cover (i.e. habitat availability) within patches, whereas no patch size or isolation effect between habitat patches was found.…”

“…Presence/absence studies are often used to analyse the responses of individual species to habitat variables (e.g. Rukke 2000;Binzenhofer et al 2005). Variables often measured include habitat factors related to species-specific food availability, vegetation structure (e.g.…”

Where do we go from here? Dispersal simulations shed light on the role of landscape structure in determining animal redistribution after reintroduction

“…We considered also the variable distance from rivers, because suitable corridors for red deer may be localized near rivers (Patthey 2003). As the explanatory variables were not normally distributed, we performed a correlation analysis based on Spearman's coefficient and we analysed the paired plots of explanatory variables to exclude highly correlated (rs<0.5; Binzenhöfer et al 2005) predictors from the subsequent modelling procedure.…”

“…Each model included different subsets of explanatory variables. We also tested the models including the squared terms of the predictors to account for potential unimodal relationships with the dependent variables (Binzenhöfer et al 2005). …”