Cartar, RalphJohnson, Sarah A.2015-12-162015-12-162015-12-162015Johnson, S. A. (2015). Scaling of Density-Dependent Reproduction in Bee-Pollinated Forbs of Logged Forests (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/27709http://hdl.handle.net/11023/2685Plant reproduction can be impacted by a variety of influences at a range of spatial scales. In the face of accelerating anthropogenic habitat disturbance, it is worth understanding how communities function within highly altered landscapes. I examined how seed size and number varied for nine species of understory forb within logged foothills forests of southern Alberta. I examined local relationships between reproductive output and floral neighbourhood, bee abundance, and habitat variation, and how these might be modified along a gradient of landscape-scale clearcut logging. I found that local variables best explained plant seed production, and heterospecifics were generally more beneficial than expected. Further, logging in the landscape modified local interactions above a threshold point of approximately 50% logging in a 1.77 km^2 area, predominantly for more habitat-specialized species. These results have implications for forest management, and for the importance of testing for interactions between explanatory variables, even across spatial scales.engUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.Ecologydensity-dependenceLandscapelocalloggingreproductionseedsDensityinteractionsclearcutplantforbCompetitionFacilitationfitnessneighbourhoodconspecificsheterospecificsPollinationpollinatorbeesmaster thesis10.11575/PRISM/27709