Seasonal comparisons of daily activity budgets of gray squirrels (Sciurus carolinensis) in urban areas

Gray squirrels (Sciurus carolinensis) use trees for various resource needs in urban and nonurban settings; particularly, mast producing trees which are the preferred and supplemental foods for the species. During periods of abundant mast availability, less time will be invested in foraging because of the higher success rate stemming from the increased ability to locate food items. Conversely, in periods of reduced mast availability, more time will be invested in foraging. However, correlations between food availability and foraging effort are only supported under the assumption that gray squirrels rely significantly on mast as a preferred or supplemental food source (Nixon et al, J Wildl Manag 39:1–25, 1975). Therefore, given the seasonal variation in the availability of mast, there should also be correlating seasonal variations in foraging effort. In this paper, we will examine daily and seasonal time-activity budgets of gray squirrels in urban areas. We studied the time-activity budgets of gray squirrels in six urban parks in Baltimore, MD. Seasonal frequencies of activities were expressed as percent occurrence and seasonal differences in activities were analyzed using a Tukey Studentized multiple range test for significance. We found that the activity with highest percent occurrence was forage (2003, summer: 23.8 %, fall: 25.9 %; 2004, summer: 23.1 %, fall: 25.2 %), followed by feed and store, all activities associated with food. Results of the Tukey Studentized multiple range test for seasonal differences of activities yielded significant results (P?P?=?0.003); fall 2003 and fall 2004 (P?=?0.048).     

Parallel Subjective Well-Being and Choice Experiment Evaluation of Ecosystem Services: Marine and Forest Reserves in Coastal Oregon,USA

Social Indicators Research - There is significant policy and research interest in (a) ecosystem services as a framework for understanding the benefits humans receive from natural systems and (b)...     

Influence of a Statewide Marriage Initiative on Clergy Involvement in Marriage Preparation

Although government-funded community healthy marriage initiatives (CHMIs) often focus on clergy-provided premarital education, little is known about the influence of a statewide initiative on clergy attitudes, perceptions, and behaviors. The purpose of this study was to compare Oklahoma clergy over time and Oklahoma clergy with clergy from other states. The findings suggest that the Oklahoma Marriage Initiative (OMI), one of the earliest and largest CHMIs, has influenced clergy attitudes and perceived effectiveness but has had a limited effect on clergy behaviors. In addition, the findings suggest that Oklahoma clergy did not significantly differ from other clergy in the United States regarding premarital education attitudes and behaviors despite the efforts of the OMI. Based on these findings, policymakers should reevaluate approaches to clergy involvement in CHMIs.