2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/21/2019 | 12:00 PM - 12:15 PM | TRASH SPECIES OR EXPLOITATIONAL MARVEL? EMERGENCE PATTERNS OF PACHYDIPLAX LONGIPENNIS ON AN URBAN-RURAL LANDSCAPE GRADIENT IN SOUTHERN NEW ENGLAND | 251 AB
TRASH SPECIES OR EXPLOITATIONAL MARVEL? EMERGENCE PATTERNS OF PACHYDIPLAX LONGIPENNIS ON AN URBAN-RURAL LANDSCAPE GRADIENT IN SOUTHERN NEW ENGLAND
The most common and abundant species found in a 3-year, cross-seasonal survey of dragonfly exuviae at small wetlands in Rhode Island (USA), Pachydiplax longipennis (Anisoptera: Libellulidae) is remarkable because it appears to successfully breed almost everywhere. Populations of exuvial P. longipennis were found at 76-90% of the sites surveyed each year and varied in abundance from 1 to >1000 (exuviae collected per hour effort). I analyzed populations along landscape (wetland area, surrounding land-use, water quality) and biotic (fish presence, species richness, abundance of the other 10 most common dragonfly species) gradients. The data show that, overall, P. longipennis has a long emergence period in southern New England (late May through September, peaking in late June), but revealed few apparent patterns for this species along the variables that were measured. The questions remain: Why does it fare so well each year at many sites, while it is not even detected at a few? Is there a common feature to the sites where it does not appear to successfully reproduce? Other potential forces driving observed abundance patterns will be considered.
- Invertebrate
- Lentic
- Landuse
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Presenters/Authors
Maria Aliberti-Lubertazzi
(), RHODE ISLAND SCHOOL OF DESIGN, MALIBERT@RISD.EDU;
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