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

  title={The impact of habitat fragmentation on trophic interactions of the monophagous butterfly Polyommatus coridon},
  author={Sabrina V. Br{\"u}ckmann and Jochen Krauss and Cornelis Van Achterberg and Ingolf Steffan‐Dewenter},
  journal={Journal of Insect Conservation},
Theory predicts that habitat fragmentation, including reduced area and connectivity of suitable habitat, changes multitrophic interactions. Species at the bottom of trophic cascades (host plants) are expected to be less negatively affected than higher trophic levels, such as herbivores and their parasitoids or predators. Here we test this hypothesis regarding the effects of habitat area and connectivity in a trophic system with three levels: first with the population size of the larval food… 

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.

Effects of Habitat Fragmentation on Abundance, Larval Food and Parasitism of a Spider-Hunting Wasp

This study showed that the abundance of T. figulus cannot be fully explained by the studied trophic interactions, and further factors, such as dispersal and habitat preference, seem to play a role in the population dynamics of this widespread secondary carnivore in agricultural landscapes.

Scale-dependent, contrasting effects of habitat fragmentation on host-natural enemy trophic interactions

Higher trophic level species may still display responses to habitat fragmentation contrary to predictions based on well supported theory and empirical evidence, and the mechanisms underlying these responses may be elucidated by studying responses, contrary to expectations, shared by related species.

Strong dispersal in a parasitoid wasp overwhelms habitat fragmentation and host population dynamics

Because the parasitoid wasp Hyposoter horticola is dispersive, it has low genetic structure, is not very sensitive to habitat fragmentation and has less spatial genetic structure than its butterfly host.

The impact of habitat fragmentation on domatia-dwelling mites and a mite-plant-fungus tritrophic interaction

Habitat fragmentation is a leading threat to biodiversity, yet the impacts of fragmentation on most taxa, let alone interactions among those taxa, remain largely unknown. We studied how three

Responses of insect herbivores and herbivory to habitat fragmentation: a hierarchical meta-analysis.

A negative effect of habitat fragmentation on abundance and species richness of herbivores, but only a non-significant trend on herbivory is found, indicating how important common generalist species can be in maintaining Herbivory as a major ecosystem process.

Habitat fragmentation differentially affects trophic levels and alters behavior in a multi-trophic marine system

The hypothesis that fragmented habitats would differentially affect trophic levels within a tri-trophic system was tested, and the results supported this hypothesis and suggested that the impact of habitat fragmentation may be stronger on intermediate rather than top troPHic levels in some marine systems.

Effects of local and landscape factors on the abundance of an endangered multivoltine butterfly at riverbanks

Analysis of habitat connectivity showed that the Kinugawa River did not appear to act as a dispersal barrier for P. argyrognomon, and habitat patch connectivity and nectar richness could be considered as positive factors in autumn and summer, respectively.

Lycaena dispar on its northern distribution limit: an expansive generalist

It is concluded that moderate anthropogenic pressure maintains suitable habitats for L. dispar through creating favourable conditions for R. obtusifolius, the primary host of the butterfly in the region and is not in the need of active conservation measures on the current northern limit of its distribution.

Insect herbivores should follow plants escaping their relatives

The results suggest that plants that leave their phylogenetic ancestral neighborhood can trigger, partly through simple density-dependency, an enemy release and fitness increase of the few insect herbivores that succeed in tracking these plants.



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.

Habitat fragmentation effects on trophic processes of insect-plant food webs.

This work studied the trophic processes of herbivory and parasitism in insect-plant food webs composed of hundreds of species in a fragmented woodland landscape, showing they can be so pervasive as to affect trophics processes of highly complex food webs and suggesting a response associated with Trophic specialization of the involved organisms as much as with their troPHic level.

Habitat modification alters the structure of tropical host–parasitoid food webs

Altered interaction structure represents an insidious and functionally important hidden effect of habitat modification by humans, indicating that perturbation of the structure and function of ecological communities might be overlooked in studies that do not document and quantify species interactions.

Consequences for host-parasitoid interactions of grazing-dependent habitat heterogeneity.

A combination of habitat and host-plant scale environmental heterogeneity influenced a host-parasitoid interaction indirectly and directly, providing a rare example of an anthropogenic disturbance positively affecting a tertiary trophic level.

Effects of habitat fragmentation at different trophic levels in insect communities

This work addresses the association of fragmentation with trophic level using a literature review of 31 studies of herbivores and their natural enemies, and a case study of the parasitoids associated with the Glanville fritillary butterfly.

The effects of plant dispersion and prey density on parasitism rates in a naturally patchy habitat

  • P. Doak
  • Environmental Science
  • 2000
The results demonstrate the importance of considering habitat pattern when examining spatial heterogeneity of parasitism and the impacts of parasitoids, and reflect, rather, individual differences in habitat use and response to prey density.

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

Habitat isolation and quality appear to contribute to occurrence and density patterns only in landscapes where these factors shift towards extremes, therefore general recommendations for conservation programs are difficult as they depend on regional distinctions.

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.


Data indicate that spatial configuration is important to mitigate extinction risks when habitat availability in a landscape is low, whereas no effect will be observed when overall area of habitat is high.

Effects of habitat isolation on pollinator communities and seed set

It is concluded that habitat connectivity is essential to maintain not only abundant and diverse bee communities, but also plant-pollinator interactions in economically important crops and endangered wild plants.