Grassland bird populations have been declining over the last 30 years, as a result of deterioration of habitat and habitat loss. The agriculture-dominated landscape of the St. Lawrence Plain supports some of the largest populations of Bobolinks (Dolichonyx oryzivorous), Henslow’s Sparrows (Ammodramus henslowii, threatened), Grasshopper Sparrows (Ammodramus savannarum, special concern), Upland Sandpipers (Bartramia longicauda, threatened), and Sedge Wrens (Icistothorus platensis, threatened) in the northeast. Double observer point counts were used to survey grassland birds from May 17 through July 17, 2005. Bird habitat models are built using species occurrence in relation to local and landscape-level habitat features. Grassland bird response variables are identified using GIS, multiple and univariate regression analysis. Bird-habitat models and response variables are used in conjunction with relevant literature to make and improve management recommendation.
|Presenter:||Sarah Lazazzero (Graduate Student)|
|Time:||1:45 pm (Session III)|