Relative importance of resource quantity, isolation and habitat quality for landscape distribution of a monophagous butterfly

  title={Relative importance of resource quantity, isolation and habitat quality for landscape distribution of a monophagous butterfly},
  author={Jochen Krauss and Ingolf Steffan‐Dewenter and Christine B. M{\"u}ller and Teja Tscharntke},
Fragmentation of food resources is a major cause of species extinction. We tested the effects of habitat area, isolation and quality for the occurrence and population density of the endangered butterfly Polyommatus coridon. Polyommatus coridon larvae are monophagous on the plant Hippocrepis comosa, and both species are specialised on calcareous grassland, which is an endangered and highly fragmented habitat type in Germany. In 2001 we surveyed all known calcareous grasslands (n=298… 

Figures and Tables from this paper

Habitat quality matters for the distribution of an endangered leaf beetle and its egg parasitoid in a fragmented landscape

Although maintaining large, well-connected patches with high host plant density is surely the major conservation goal for the specialized herbivore C. canaliculata, also small patches withhigh host plant densities can support viable populations and should thus be conserved.

Habitat quality, not patch isolation, drives distribution and abundance of two light-demanding butterflies in fragmented coppice landscapes

Coppice forests are socio-ecological systems especially rich in biodiversity. They have been transformed into high forest and abandoned across large areas of Europe over the past 200 years. Coppice

The impact of habitat fragmentation on trophic interactions of the monophagous butterfly Polyommatus coridon

It is concluded that the highly specialized butterfly species is more affected by habitat fragmentation than its larval food plant because of its higher trophic position, and conservation efforts should focus first on the most specialized species of interaction networks and second on higher Trophic levels.

How do local habitat management and landscape structure at different spatial scales affect fritillary butterfly distribution on fragmented wetlands?

Habitat fragmentation, patch quality and landscape structure are important predictors for species richness. However, conservation strategies targeting single species mainly focus on habitat patches

Habitat fragmentation of semi-natural grasslands : Impact on species richness, trophic interactions and population genetics

The highly specialized butterfly species is more affected by habitat fragmentation than its larval food plant because of its higher trophic position, and the butterfly host species was also more affected than its parasitoids, presumably because of lower resource specialization of local parasitoid which also frequently occur in alternative hosts.

Relative importance of host plant patch geometry and habitat quality on the patterns of occupancy, extinction and density of the monophagous butterfly Iolana iolas

The results suggest that for I. iolas, and probably for other specialist butterflies with clearly delimited resource requirements, metapopulation dynamics can be satisfactorily predicted using only geometric variables because most habitat characteristics are subsumed in patch area.

Increasing patch area, proximity of human settlement and larval food plants positively affect the occurrence and local population size of the habitat specialist butterfly Polyommatus coridon (Lepidoptera: Lycaenidae) in fragmented calcareous grasslands

This study is one of the few showing a positive effect of human settlement on a grassland specialist butterfly although the mechanism hidden behind this phenomenon is unknown and requires further examination.

Habitat resources, remnant vegetation condition and area determine distribution patterns and abundance of butterflies and day-flying moths in a fragmented urban landscape, south-west Western Australia

  • M. Williams
  • Environmental Science
    Journal of Insect Conservation
  • 2010
The creation of cities, towns and farms following European settlement of Australia has fragmented the original vegetation. Many native species that were previously widespread are now found only

Population structure of a large blue butterfly and its specialist parasitoid in a fragmented landscape

The hypothesis that Neotypus parasitoid wasps are more sensitive to habitat fragmentation than their Maculinea butterfly hosts is supported.

The ecology and conservation of the Adonis Blue (Polyommatus bellargus) and the Chalkhill Blue (Polyommatus coridon) butterflies in the UK

This thesis examines and compares the ecology of two closely butterfly species, polyommatus bellargus and Polyommatus coridon in southern England; calcareous grassland specialists, found in a highly fragmented ecosystem at the northern most edge of their geographic range.



Butterfly community structure in fragmented habitats

This is the first study to show differential responses of monophagous, oligophagyous and polyphagous species to area with respect to species richness and population density, and significant z-values were not only found for total species richness but also for the local density of butterfly species richness.

Effects of habitat area, isolation, and landscape diversity on plant species richness of calcareous grasslands

Contrary to predictions, habitat specialists were not more affected by reduced habitat area than generalists, but regional variation between habitats contributed also an important 46% of total species richness.

The quality and isolation of habitat patches both determine where butterflies persist in fragmented landscapes

  • J. ThomasN. Bourn B. Goodger
  • Environmental Science
    Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 2001
Habitat quality is the missing third parameter in metapopulation dynamics, contributing more to species persistence, than site area or isolation, and a reorientation in conservation priorities is recommended.

Effects of habitat fragmentation on the genetic structure of the monophagous butterfly Polyommatus coridon along its northern range margin

The combination of genetic and ecological data sets revealed that the expected heterozygosity decreased with increasing distance to the nearest P. coridon population, which might be explained by an increasing habitat fragmentation towards the edge of the distribution range and/or a general reduction of genetic variability towards the northern edge of its distribution.

Dispersal, distribution, patch network and metapopulation dynamics of the dingy skipper butterfly (Erynnis tages)

This study suggests that long-term regional persistence of E. tages is very likely to depend on metapopulation processes within the restricted patch network, rather than on the long- term survival of local populations.

Extinction‐Colonization Dynamics and Host‐Plant Choice in Butterfly Metapopulations

It is concluded that the colonization effect is generated by host preference influencing the movement patterns of ovipositing females, which influences their likelihood of colonizing patches with particular host composition.

Microsatellite markers to assess the influence of population size, isolation and demographic change on the genetic structure of the UK butterfly Polyommatus bellargus

It is indicated that adequate population size is a crucial factor in the conservation of genetic diversity in P. bellargus in the UK, and small populations may lose genetic diversity through drift.