Progress 03/01/02 to 02/27/07
Outputs
OUTPUTS: Analyses of the Sacramento River bank swallow metapopulation were completed and are in press for publication in Restoration Ecology. In Fall 2004, two new graduate students in this area started in my lab, Rebecca Wahl and Tonya Chilton. Ms. Chilton has monitored movement behavior of 11 adult male black bears. Ms. Wahl's research is still in the planning stages. I submitted two grant proposals for continuing research. The first was funded by The Nature Conservancy. I will be assessing effects of a captive rearing program for the Oregon silverspot butterfly, a federally-listed threatened species. The second was not funded by the National Science Foundation; we revised and resubmitted this proposal early in 2005. PARTICIPANTS: Nothing significant to report during this reporting period. TARGET AUDIENCES: Nothing significant to report during this reporting period. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.
Impacts
These projects change the way people think about restoring and managing populations of endangered species. Ms. Chilton's research directly assesses the effects of road restoration on black bear populations. Other projects provide new methods for habitat restoration or analyzing monitoring data. By working directly with agency and NGO biologists as well as publishing in international journals, the results of these projects are available to a wide range of managers and the general public.
Publications
- 2004, Irvine, R. L., E. E. Crone, L. J. Jackson, and E. A. MacIsaac, 2004. Does scale affect ecological model predictions A test with lake responses to fertilization. Ecological Applications 14:1178-1188.
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Progress 01/01/04 to 12/30/04
Outputs
Analyses of the Sacramento River bank swallow metapopulation were completed and are in press for publication in Restoration Ecology. In Fall 2004, two new graduate students in this area started in my lab, Rebecca Wahl and Tonya Chilton. Ms. Chilton has monitored movement behavior of 11 adult male black bears. Ms. Wahl's research is still in the planning stages. I submitted two grant proposals for continuing research. The first was funded by The Nature Conservancy. I will be assessing effects of a captive rearing program for the Oregon silverspot butterfly, a federally-listed threatened species. The second was not funded by the National Science Foundation; we revised and resubmitted this proposal early in 2005.
Impacts
These projects change the way people think about restoring and managing populations of endangered species. Ms. Chilton's research directly assesses the effects of road restoration on black bear populations. Other projects provide new methods for habitat restoration or analyzing monitoring data. By working directly with agency and NGO biologists as well as publishing in international journals, the results of these projects are available to a wide range of managers and the general public.
Publications
- Irvine, R. L., E. E. Crone, L. J. Jackson, and E. A. MacIsaac, 2004. Does scale affect ecological model predictions? A test with lake responses to fertilization. Ecological Applications 14:1178-1188.
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Progress 01/01/02 to 12/31/02
Outputs
A small grant from the NSF/EPSCoR State Competitive Grants Program was obtained to evaluate the use of population indices as surrogates for population size in birds, especially sage grouse. This research will commence in spring 2003. In addition, analyses assessing impacts of riparian forest restoration on songbird populations and landscape dynamics are being completed. In general, the results of very simple analyses were consistent with general knowledge of the riparian landscape ecology, and with results of mechanistic studies in this system, where they exist. This provides some independent corroboration of very simple models as a way to understand ecosystem dynamics. However, long-term predictions about the impact of restoration on landscape dynamics differed widely among multiple models that were almost equally supported by the data. Avian population dynamics differed among models explored, although not as widely, perhaps because I did not explore as wide a range
of models, because the data were not made available to me until very late in the year.
Impacts
We developed models linking hydrology, vegetation, and birds in order to assess the effect of different management scenarios in riparian ecosystems. In the past, scientists from these fields have been unable to achieve this goal due to the difference in the temporal and spatial scales at which data are collected. In general, where they overlapped, results of our simple models concurred with those of much more complex and detailed models, that did not cross scales. This suggests that simple and do-able models may be useful in assessing impacts of large-scale management actions, at an early point in the data collection process.
Publications
- Holl, K.D., E.E. Crone, and C.B. Schultz. 2003. Landscape restoration: moving from generalities to methodologies. BioScience (in press).
- Golet, G.H., D.L. Brown, E.E. Crone, G.R. Geupel, S.E. Greco, K.D. Holl, K.A. Hoover, D.E. Jukkola, G.M. Kondolf, E.W. Larsen, F.K. Ligon, R.A. Luster, M.P. Marchetti, N. Nur, B.K. Orr, D.R. Peterson, M.E. Power, W.E. Rainey, M.D. Roberts, J.G. Silveira, S.L. Small, J.C. Vick, D.S. Wilson, and D.M. Wood. 2003 In press. Using science to evaluate restoration efforts and ecosystem health on the Sacramento River Project, California. In PM Faber (editor), Proceedings of the Riparian Habitat and Floodplains Conference, March 12-25, 2001, Sacramento, CA. University of California Press.
- LaMontagne, J., R. L. Irvine and E. E. Crone. 2002. Spatial patterns of population regulation in sage grouse (Centrocercus spp.) population viability analysis. Journal of Animal Ecology 71:672-682.
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