Publications by authors named "Jeffrey Pontius"
Military training activities are known to impact individual species, yet our understanding of how such activities influence animal communities is limited. In this study, we used long-term data in a case study approach to examine the extent to which the local small landbird community differed between a site in northeast Kansas that experienced intensive disturbance from military training activities (Ft. Riley Military Installation) and a similar, nearby site that experienced minimal human disturbance (Konza Prairie Biological Station).
View Article and Find Full Text PDFMilitary installations provide important native habitat for songbirds, including many species that have experienced population declines in recent decades. As part of the Land Condition Trend Analysis (LCTA) program to monitor animal populations on military lands, we surveyed small (<250 g) breeding landbirds on 60 permanent plots on the Fort Riley Military Installation in northeastern Kansas from 1991 to 2002. During this period, species richness averaged 39.
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- Stoichiometric analyses help in studying the relationships between nitrogen (N) and carbon (C) cycles, influencing biogeochemistry from ecosystems to the entire biosphere.
- Research measured ammonium (NH4+) uptake rates in eight streams and assessed the carbon to nitrogen ratios (C:N) in organic matter from ten streams, uncovering a significant connection between these two factors.
- The findings indicate that higher C:N ratios correlate with lower N-specific uptake rates, and changes in C:N due to factors like vegetation removal could impact nitrogen retention in stream ecosystems.