What are invasive species? Exotic species Naturalized species Invasive species.
Climate Change: Challenge of Invasive Species
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Transcript of Climate Change: Challenge of Invasive Species
Climate Change: Challenge of Invasive Species
Pam FullerFlorida Integrated Science Center
U.S. Department of the InteriorU.S. Geological Survey
Changes in Habitat Suitability
• Water temperature, depth, velocity, and timing
• Intensity and timing of hydrologic and fire regimes
• Physical, chemical, and biological components of habitat
• Advantage to invasive species: many are habitat generalists
Response of Plants and Animals
Climate change will shift
• Where species are located: range shifts
• Timing of biological events: phenology
• Biotic interactions: predation and competition
Climate Change and Invasive Species
Climate change alters
• Means of transport and introduction
• Establishment of additional species
• Impact of existing invasive species
• Distribution of existing invasive species
• Effectiveness of control strategies(modified from Hellmann et al. 2007)
Nonnative Diseases & Pathogens: Ichthyophonus
• Protozoan parasite
• Yukon chinook salmon
Jim Winton, Western Fisheries Research Center
June10
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1991-1996
25 year Yukon temperature means
July August September
Month
1981-1990
1975-1980
June10
11
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18
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20
21
1991-1996
25 year Yukon temperature means
July August September
Month
1981-1990
1975-1980
Prevalence of Ichthyophonus in the Yukon River System
• Study comparing growth of worldwide ecotypes
• Found in all 50 states
• Different habitat here
• Stems are shorter toward northern range limit
• Purple loosestrife is likely to spread northward with climate change, too dry for southern expansion
Purple Loosestrife and Climate Change
Northernmost limit in North America,
Amos, northern QuebecPurple loosestrife grows in gaps of white poplar forest in Turkey
light gap
Beth Middelton, National Wetlands Research Center
USGS Database Resources
Pam Fuller, Florida Integrated Science Center
Predicting Range Shifts
Catherine Jarnevich, Fort Collins Science Center
Kudzu
Current distribution with future habitat
Conclusions• Prevention, detecting, monitoring, and controlling invasive species is a resource-intensive management endeavor
• Complicated by uncertainties regarding climate change
• Understanding and working to minimize these uncertainties will become increasingly important with further environmental stressors
• Baseline information on species distribution is critical to future management success
• Modeling efforts to predict future scenarios will become increasingly important to resource managers
• USGS will continue to work with partners to maintain and improve databases and provide research to help managers make more informed decisions