Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Biodiversity
Age And Growth Of Cottonwood Trees Along The Missouri River, North Dakota, Jonathan M. Friedman, Fisher R. Ankney, J. Marshall Wolf
Age And Growth Of Cottonwood Trees Along The Missouri River, North Dakota, Jonathan M. Friedman, Fisher R. Ankney, J. Marshall Wolf
The Prairie Naturalist
The relict plains cottonwood (Populus deltoides subsp. monilifera) forest along the Missouri River between Lakes Sakakawea and Oahe includes trees as large as two meters in diameter. We cored 24 of these trees to determine their age and suitability for flow reconstruction. Because most of the trees were rotten in the center, we developed a method to estimate the date of the center ring that accounts for the increase in ring width toward the center. Estimated center ring dates were as early as 1806. Cottonwood growth at a dry site was correlated with April–August flow prior to construction of Lake …
Wild Turkey Occupancy In A Prairie Landscape, Joshua C. Courlas, R. Scott Lutz
Wild Turkey Occupancy In A Prairie Landscape, Joshua C. Courlas, R. Scott Lutz
The Prairie Naturalist
We investigated wild turkey (Meleagris gallopavo) distribution in prairie landscapes in North Dakota using occupancy modeling in two stages. In 2012, we extensively surveyed ecoregions across the state and in 2013, intensively surveyed the ecoregion with the highest probability of occupancy. Occupancy models from the statewide survey indicated wild turkeys were sparse in ecoregions with primarily agricultural landscapes, were found associated with wooded riparian cover, and found most frequently in the Missouri River Plateau ecoregion. In the Missouri River Plateau, our occupancy models identified that an additive model including mean patch area of cropland fields and spatial aggregation of forest …