Janet Franklin
- Ecology, Evolution, & Environmental Science |
- Jointly appointed in Geographical Sciences and Urban Planning
Landscape Ecology, Biogeography, Geographic Information Science
Dr. Franklin’s research is focused on in the dynamics of terrestrial (land) plant communities at the landscape scale. Her work addresses the impacts of human-caused landscape change on the environment. Human land use -- agriculture and urbanization -- and other large-scale human impacts such as global warming, and the introduction of exotic species, often interact with natural disturbance regimes such as fire, flooding and hurricanes, to shape plant community dynamics (succession). How resilient are ecological communities to these impacts? Terrestrial plant communities are important elements of regional biodiversity and provide essential habitat for more charismatic animal and rare plant species.
Janet and her students are currently working on: a) methods for predicting species distributions from environmental variables to study the impacts of climate change and land use change on biodiversity; b) exploring the impacts of anthropogenically-altered fire regimes and land use change on flora and fauna in southern California and elsewhere using spatially explicit landscape simulation models and long-term datasets; and, c) understanding the long term impacts of human and natural disturbance on tropical forest island ecosystems in the Pacific and Caribbean. They use many research tools including field surveys, statistical modelling, computer simulation, remote sensing, spatial analysis and geographic information systems.
Selected Publications (Student coauthors underlined)
Franklin, J., In press, Spatial point pattern analysis of plants, in, Perspectives on spatial data analysis, Rey, S. J. and Anselin, L., editors, Springer, New York.
Regan, H. M., Crookston, J. B., Swab, R., Franklin, J., and Lawson, D. M. In press, Habitat fragmentation and altered fire regime create trade-offs for an obligate seeding shrub, Ecology
Keeley, J. E., Safford, H., Fotheringham, C.J., Franklin, J., and Moritz, M., 2009, The 2007 Southern California wildfires: Lessons in complexity, Journal of Forestry 107:287-296.
Lewison, R. L., Soykan, C. and Franklin, J., 2009, Mapping the bycatch seascape: Multi-species and multi-scale spatial patterns of fisheries bycatch, Ecological Applications 19(4): 920-930.
Franklin, J., Wejnert, K., Hathaway, S., Rochester, C. and Fisher, R., 2009, Effect of species rarity on the accuracy of species distribution models for reptiles and amphibians in southern California, Diversity and Distributions 15: 167-177.
Franklin, J. and Steadman, D. W., 2008, Prehistoric species richness of birds on oceanic islands, Oikos 117: 1885-1891.
Franklin, J., G. Keppel and W. A. Whistler, 2008. The flora and vegetation of Lakeba, Nayau and Aiwa Islands, Central Lau Group, Fiji, Micronesica 40(1/2): 169-225.
Hierl, L. A., Franklin, J., Deutchman, D. H., Regan, H. M., and Johnson, B. S., 2008, Assessing and prioritizing ecological communities for monitoring in a regional habitat conservation plan, Environmental Management 42(1): 165-179.
Regan, H. M., Hierl, L. A., Franklin, J., Deutchman, D. H., Schmalbach, H., Winchell, C. S. and Johnson, B. S., 2008, Species prioritisation for monitoring and management in regional multiple species conservation plans, Diversity and Distributions 14: 462-471; doi: 10.1111/j.1472-4642.2007.00447.x
Franklin, J., 2007, Recovery from clearing, cyclone and fire in rain forest of Tonga, South Pacific: vegetation dynamics 1995-2005, Austral Ecology 32(7): 789-797
Schmalbach, H., J. Franklin and J. F. O’Leary, 2007, Patterns of post-fire regeneration in a southern California mixed chaparral community, Madroño 54(1): 1-12.
Fall, P. L., Drezner, T. D., Franklin, J., 2007, Dispersal ecology of the lowland rainforest in the Vava'u Island Group, Kingdom of Tonga, New Zealand Journal of Botany 45: 393-417.
Miller, J., J. Franklin and R. Aspinall, 2007, Incorporating spatial dependence in predictive vegetation models, Ecological Modelling 202: 225-242.
Franklin, J. and S. J. Rey, 2007, Spatial patterns of tropical forest trees in Western Polynesia suggest recruitment limitations during secondary succession, Journal of Tropical Ecology 23: 1-12.
Miller, J., and J. Franklin, 2006, Explicitly incorporating spatial dependence in predictive vegetation models as explanatory variables: a Mojave Desert case study, Journal of Geographical Systems 9: 411-435.
Franklin, J., Spears-Lebrun, L., D. Deutschman, and K. Marsden, 2006, Impact of a high-intensity fire on mixed evergreen and mixed conifer forests in the Peninsular Ranges of southern California, USA, Forest Ecology and Management 235: 18-29.
Syphard A. D., J. Franklin, and J. E. Keeley, 2006, Simulating the effects of frequent fire on southern California coastal shrublands, Ecological Applications 16: 1744-1756.
Franklin, J., S. Wiser, D. R. Drake, L. Burrows and W. Sykes, 2006, Environment, disturbance history and rain forest composition across the islands of Tonga, Western Polynesia, Journal of Vegetation Science 17: 233-244.
Franklin, J, A. D. Syphard, H. He and D. Mladenoff, 2005, The effects of altered fire regimes on patterns of plant succession in the foothills and mountains of southern California, Ecosystems 8: 885-898.
Akçakaya, H. R., J. Franklin, A. D. Syphard, and J. Stephenson, 2005, Viability of Bell's Sage Sparrow (Amphispiza belli ssp. belli) under altered fire regimes, Ecological Applications 15: 521-531.
Tague, C. L., L. E Band, and J. Franklin, 2005, Terrestrial ecosystems, in, Encyclopedia of Hydrological Sciences, published on-line, http://www.wiley.co.uk/ehs, Anderson, M. G., editor-in-chief, Wiley, New York, Chapter 103 (14 pages).
Possingham, Hugh P., Janet Franklin, Kerrie Wilson and Tracey J. Regan, 2005, The role of landscape heterogeneity and ecosystem processes in conservation planning, in, Ecosystem Function in Heterogeneous Landscapes, Lovett, G., Jones, C., Turner, M. G., and Weathers, K., editors, Springer, New York, 389-406.
Syphard, A. D. and J. Franklin, 2004. Spatial aggregation effects on the simulation of landscape pattern and ecological processes in southern California plant communities, Ecological Modelling 180: 21-40.
Franklin, J., C. Coulter and S. J. Rey, 2004, Change over 70 years in a southern California chaparral community related to fire history, Journal of Vegetation Science 15:. 701-710.
Franklin, J., D. R. Drake, K. R. McConkey, F. Tonga and L. B. Smith, 2004, The effects of Cyclone Waka on the structure of lowland tropical rain forest in Vava’u, Tonga, Journal of Tropical Ecology, 20: 409-420.
Wells, M. L., J. F. O’Leary, J. Franklin, J. Michaelsen and D. E. McKinsey, 2004, Variations in a regional fire regime related to vegetation type in San Diego County, California, Landscape Ecology, 19: 139-152.