Interaction networks of macrofungi and mycophagous beetles reflect diurnal variation and the size and spatial arrangement of resources

Mary Jane Epps, Anne E Arnold

Research output: Contribution to journalArticle

Abstract

Ecological networks are useful for characterizing interspecific associations and predicting the resilience of ecological communities. We evaluated how such networks vary with the size, spatial distribution, and timing of availability of resources, with a focus on beetle-macrofungal associations. We used 2 y of field experiments to construct ecological networks based on manipulated sporocarp baits (resources; Pleurotus ostreatus) and natural communities of beetles (consumers) in a temperate forest. Centrality and interaction strength increased with resource size, but were associated weakly with resource density and isolation, and not at all with position within patches. Whole-network connectance was greater in mornings (when beetle richness and abundance were high) than evenings. Interannual differences in networks were consistent with differences in beetle communities between years. The capacity of networks to vary temporally, spatially, and as a function of resource traits is examined in light of understanding beetle-macrofungal associations, which are important components of fungal ecology.

Original languageEnglish (US)
Pages (from-to)48-56
Number of pages9
JournalFungal Ecology
Volume37
DOIs
StatePublished - Feb 1 2019

Fingerprint

diurnal variation
beetle
Coleoptera
fungi
resource
Pleurotus ostreatus
bait
fruiting bodies
temperate forests
temperate forest
baits
spatial distribution
ecology

Keywords

  • Agaricaceae
  • Appalachian mountains
  • Centrality
  • Coleoptera
  • Connectance
  • Diversity
  • Ecological networks
  • Interaction strength
  • Temporal variation

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Ecological Modeling
  • Plant Science

Cite this

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title = "Interaction networks of macrofungi and mycophagous beetles reflect diurnal variation and the size and spatial arrangement of resources",
abstract = "Ecological networks are useful for characterizing interspecific associations and predicting the resilience of ecological communities. We evaluated how such networks vary with the size, spatial distribution, and timing of availability of resources, with a focus on beetle-macrofungal associations. We used 2 y of field experiments to construct ecological networks based on manipulated sporocarp baits (resources; Pleurotus ostreatus) and natural communities of beetles (consumers) in a temperate forest. Centrality and interaction strength increased with resource size, but were associated weakly with resource density and isolation, and not at all with position within patches. Whole-network connectance was greater in mornings (when beetle richness and abundance were high) than evenings. Interannual differences in networks were consistent with differences in beetle communities between years. The capacity of networks to vary temporally, spatially, and as a function of resource traits is examined in light of understanding beetle-macrofungal associations, which are important components of fungal ecology.",
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AU - Arnold, Anne E

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