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dc.contributor.authorWalz-Salvador, Mileseng
dc.contributor.authorCox, W. Andreweng
dc.contributor.authorFaaborg, John, 1949-eng
dc.contributor.authorCornell-Duerr, Kerri L.eng
dc.contributor.corporatenameUniversity of Missouri-Columbia. Office of Undergraduate Researcheng
dc.contributor.meetingnameUndergraduate Research and Creative Achievements Forum (2008 : University of Missouri--Columbia)eng
dc.date2008eng
dc.date.issued2008eng
dc.descriptionAbstract only availableeng
dc.description.abstractLong-term population size trends of Neotropical migrants and other forest birds are of primary concern for conservation biologists. The Breeding Bird Survey (BBS) has become an important tool for biologists in estimating population trends, but because surveys are conducted only along roads, its utility for forest interior species may be limited. We analyzed a long term (1991-2006) point count data set from the interior of three forested sites in central Missouri and compared our trend estimates to BBS trends for the state of Missouri. Using a mixed model analysis of variance with year as a fixed effect and point as a random effect, we generated trend estimates for thirteen species. Results/Conclusions Five species (38%) exhibited statistically significant negative trends indicating species decline, four species (31%) exhibited positive trends indicating that populations increased, three species (23%) exhibited no significant trend, and data from one species did not adequately fit the model. Of the nine species with significant trends in our point count data, seven (78%) had trends that were qualitatively similar to those generated from BBS data. However, for both of the species with contrasting trends, model predictions were strongly different. Our results suggest that the accuracy of BBS trends for forest interior birds may be species specific. We hope to strengthen our conclusions by incorporating point count data from other field sites and by controlling for observer effects in future analyses.eng
dc.description.sponsorshipNSF Undergraduate Mentoring in Environmental Biologyeng
dc.identifier.urihttp://hdl.handle.net/10355/2038eng
dc.languageen_USeng
dc.publisherUniversity of Missouri--Columbia. Office of Undergraduate Researcheng
dc.relation.ispartof2008 Undergraduate Research and Creative Achievements Forum (MU)eng
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. Office of Undergraduate Research. Undergraduate Research and Creative Achievements Forumeng
dc.subjectconservation biologyeng
dc.subjectBreeding Bird Survey (BBS)eng
dc.subjectforest interior specieseng
dc.titlePopulation trends of forest birds in Missouri, USA: Comparison of point count data with predictions from the BBS [abstract]eng
dc.typePresentationeng


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