2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/22/2018 | 12:15 PM - 12:30 PM | AERIAL INSECTIVOROUS BIRDS: CONSERVATION ACROSS THE LAND-WATER INTERFACE | 320
AERIAL INSECTIVOROUS BIRDS: CONSERVATION ACROSS THE LAND-WATER INTERFACE
Aerial insectivorous birds – swifts, swallows, flycatchers, and nightjars – have experienced alarming population declines in eastern North America. Declines have occurred across the guild, despite a wide diversity of life histories, habitats, and taxonomy, pointing to flying insect prey as a common factor in these declines. Emergent aquatic insects, commonly sensitive to changes in water quality, are a key food resource for many aerial insectivores. To explore potential links between water quality and aerial insectivorous bird reproductive success and body condition, we installed nestboxes and monitored Tree Swallow (Tachycineta bicolor) body condition and reproductive success, assemblages of flying insects (aquatic and terrestrial), and water-chemistry parameters at 7 river reaches in greater Columbus, Ohio over consecutive breeding seasons (2014-2017). Water temperature was related to both the density and family richness of emerging aquatic insects. Total nitrogen, EPT relative abundance, and water temperature predicted the number of eggs and fledglings. The scaled mass index of body condition in adult swallows was strongly related to EPT relative abundance and water mercury concentrations. These initial findings implicate water quality as an important consideration in the conservation of riparian aerial insectivorous birds.
- Water Quality
- Conservation
- Food Webs
Presentation:
This presentation has not yet been uploaded.
Handouts:
Handout is not Available
Transcripts:
CART transcripts are NOT YET available, but will be posted shortly after the conference
Presenters/Authors
Joseph W. Corra
(), The Ohio State University, corra.1@osu.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -
S. Mažeika Patricio Sulliván
(), The Ohio State University, sullivan.191@osu.edu;
ASHA DISCLOSURE:
Financial -
Nonfinancial -