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Published on May 12, 2014
IPCC Working Group II published a 2014 update that included, what Connie Barlow calls, "the most frightening climate change data chart I have seen." Of all types of organisms, trees have the least capacity to migrate in sync with rapid climate change. Thus, even widespread and common species of forest trees, especially in northern latitudes, will undergo severe habitat loss in this century.
Barlow urges her audience in Prescott, Arizona, to find meaning and hope by reading the scientific papers, viewing the range change predictions of the U.S. Forest Service, and then joining with others to engage in "assisted migration" northward of trees crucial for forest health in the United States and Canada.
Barlow founded in 2004 "Torreya Guardians." This group of tree-loving citizen-naturalists engaged, in 2008, in the first "assisted migration" of a forest tree (in the eastern USA) endangered by climate change. What was then controversial will become increasingly routine in the decades ahead, when once-common forest trees succumb to native pests and diseases that they evolved to withstand — so long as a deteriorating climate doesn't weaken them.
00:08 Introduction by Walt Anderson, Prescott College 01:37 Connie Barlow begins presentation climate action) 03:44 Ceremonial hike to Champion Alligator Juniper 04:30 ecologist Paul S. Martin and "deep time eyes" 06:36 "ecological anachronisms" 08:25 anachronistic fruit of Joshua Tree 10:17 climate change is faster than trees can move 10:40 IPCC Working Group II 2014 chart: trees too slow 14:40 past-present-future range maps of Joshua Tree 17:15 "assisted species migration" so genotypes survive 18:20 first "assisted migration" by Torreya Guardians 19:09 Passenger Pigeon extinction precludes dispersal 19:30 Can nature no longer take care of itself? 21:30 why Connie's group moved Florida Torreya north 23:51 natural history experiments for northern tree limits 25:17 Annotated list of "assisted migration" online links 25:44 Forestry professionals lead asstd migration trials 29:04 Torreya Guardians controversial climate action 30:08 Journal of Forestry 2013 key paper on forestry 30:39 Torreya Guardians = responsible citizen action 31:48 Legal openings for citizen action: endangered 32:40 natural history and paleoecology necessary 35:30 videoblog series: "Climate, Trees, and Legacy" 36:40 Lessons of Torrey Pine (in S. California) 39:15 Alligator Juniper as focal tree for AZ and NM 39:33 USFS detailed future range maps of w. trees: http://forest.moscowfsl.wsu.edu/clima... 40:55 Watch "The Man Who Planted Trees" on youtube: http://youtu.be/v_7yEPNUXsU 42:18 Conclusion and summary