Jump to main content or area navigation.

Contact Us

Extramural Research

Grantee Research Project Results

Grantee Research Project Results

Causes And Consequences Of Individual Variation In Body Condition And Reproductive Effort In American Kestrels (Falco Sparverius)

EPA Grant Number: U915336
Title: Causes And Consequences Of Individual Variation In Body Condition And Reproductive Effort In American Kestrels (Falco Sparverius)
Investigators: Ardia, Daniel R.
Institution: Cornell University
EPA Project Officer: Broadway, Virginia
Project Period: August 25, 1998 through January 1, 2000
Project Amount: $101,540
RFA: STAR Graduate Fellowships (1998)
Research Category: Academic Fellowships , Ecological Indicators/Assessment/Restoration , Fellowship - Ecology and Ecosystems



Different rates of survival and reproduction among individuals within a species underlie patterns of distribution and abundance. Such differences can arise due to differences among sites in the quality of habitat or in the quality of individuals or both. The goal of this research is to investigate the causes and consequences of individual variation in reproductive success in American kestrels (Falco sparverius). I will work along a geographical gradient from Quebec to Georgia. At three locations, I will monitor reproduction and survival as a function of body condition and quality of habitat and conduct intensive behavioral observations to determine what role foraging effort plays in influencing body condition and reproductive success. To test hypotheses, I will experimentally manipulate the number of available nest-sites and handicap adults. The ecological and conservation implications of this research include providing a basis for understanding how species may respond to large-scale changes such as global climate change and smaller scale changes such as habitat loss and fragmentation.

Supplemental Keywords:

RFA, Scientific Discipline, Ecosystem Protection/Environmental Exposure & Risk, Ecology, exploratory research environmental biology, wildlife, Ecosystem/Assessment/Indicators, Ecosystem Protection, Ecological Effects - Environmental Exposure & Risk, Habitat, Environmental Monitoring, Ecological Risk Assessment, Ecological Indicators, ecological effects, monitoring, american kestrels, individual variability, conservation, habitat loss, body condition, distribution, quality of habitat, falco sparverious

Top of Page

The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.

Jump to main content.