OOS 38 - Will Climate Change Increase the Impacts of Invasive Species?

Thursday, August 10, 2017: 8:00 AM-11:30 AM
D135, Oregon Convention Center
Organizer:
Cascade J. B. Sorte, University of California, Irvine
Co-organizer:
Bethany A. Bradley, University of Massachusetts, Amherst
Moderator:
Inés Ibáñez, University of Michigan
Climate change and invasive species are, individually, two of the greatest threats to biodiversity and ecosystem functioning. Both factors have driven wide-ranging alterations in species’ abundances, distributions and interactions, and they have resulted in local extinctions. In addition to their direct effects, climate change and invasions may interact, with changing environmental conditions increasing the success of invasive species. Climate change might also increase the impacts of invasive species on native ecosystems by altering invader abundance, range size, and/or per capita effects. This suggests the potential for a “double whammy” to native systems if they are simultaneously impacted both directly by climate change and indirectly by climate-driven increases in invasive species. However, the scope and magnitude of these potential interactive effects remains largely unexplored. This organized oral session brings together speakers whose recent research addresses three key questions underlying the hypothesis that climate change increases the impacts of invasive species. First, does climate change increase the relative success of invasive species? Second, how do existing metrics of invasion “success” relate to ecological impacts? And third, are invasive species’ impacts on native species and systems increased under changing environmental conditions? Speakers in this session address these questions across a range of terrestrial and aquatic ecosystems and using approaches from manipulative experiments to global syntheses.
8:00 AM
 Global threats from invasive alien species in the twenty-first century and national response capacities
Regan Early, University of Exeter, Cornwall; Bethany A. Bradley, University of Massachusetts, Amherst; Jeffrey S. Dukes, Purdue University; Joshua J. Lawler, University of Washington; Julian D. Olden, University of Washington; Dana M. Blumenthal, USDA-ARS; Patrick Gonzalez, National Park Service; Edwin D. Grosholz, University of California; Inés Ibáñez, University of Michigan; Luke P. Miller, Stanford University; Cascade J. B. Sorte, University of California; Andrew J. Tatem, University of Southampton
8:20 AM
 No good news: Invasive plants thrive with elevated CO2, warming, nitrogen deposition, and altered precipitation in semi-arid grassland
Dana M. Blumenthal, USDA-ARS; Julie A. Kray, USDA-ARS; Elise Pendall, University of Western Sydney; Daniel R. LeCain, USDA-ARS; Jack A. Morgan, USDA-ARS
9:00 AM
 Climate driven invasive hybridization erodes fitness in a cold-water fish
Ryan P. Kovach, Northern Rocky Mountain Science Center, U.S. Geological Survey; Clint C. Muhlfeld, USGS; Winsor H. Lowe, University of Montana; Mathew Boyer, Montana Fish Wildlife and Parks; Fred W. Allendorf, The University of Montana; Gordon Luikart, The University of Montana
9:20 AM
 Ecological and evolutionary impacts of climate on pollinator-mediated interactions between native and invasive plants
Diane R. Campbell, University of California - Irvine; Wilnelia Recart, University of California - Irvine
9:40 AM
9:50 AM
 How does invasive species abundance relate to ecological impact?
Bethany A. Bradley, University of Massachusetts, Amherst; Amanda E. Bates, University of Southampton; Genevieve Bernatchez, University of California; Jeffrey M. Diez, University of California, Riverside; Brittany Laginhas, University of Massachusetts; Cascade J. B. Sorte, University of California; Raj Whitlock, University of Liverpool; Jenica M. Allen, University of New Hampshire; Regan Early, University of Exeter, Cornwall; Jonathan Lenoir Jr., Université de Picardie Jules Verne; Montserrat Vilà, Estación Biológica de Doñana (EBD-CSIC)
10:10 AM
 Meta-analysis suggests synergistic impacts of global change and invasive species
Jenica M. Allen, University of New Hampshire; Jeffrey S. Dukes, Purdue University; Jonathan Lenoir Jr., Université de Picardie Jules Verne; Montserrat Vilà, Estación Biológica de Doñana (EBD-CSIC); Dana M. Blumenthal, USDA-ARS; Bethany A. Bradley, University of Massachusetts, Amherst; Cascade J. B. Sorte, University of California; Alberto Maceda-Veiga, Estación Biológica de Doñana (EBD-CSIC); Genevieve Bernatchez, University of California; Julya Montgomery, Purdue University; Mitchell O'Neill, University of New Hampshire; Christina Swope, USDA-ARS
10:30 AM
 Restoring coastal ecosystems amidst biological invasions and a changing climate
Edwin D. Grosholz, University of California; Brian S. Cheng, University of Massachusetts, Amherst
10:50 AM
 Functional shifts in rocky reef communities with warming depend on protection from exploitation and range extension by a habitat-altering "invasive" urchin
Amanda Bates, University of Southampton; Rick Stuart-Smith, University of Tasmania; Neville Barrett, University of Tasmania; Graham Edgar, University of Tasmania
11:10 AM
 Success and impacts of species invasions in a changing world
Cascade J. B. Sorte, University of California, Irvine