Losing Legacies, Ecological Release, and Transient Responses: Key Challenges for the Future of Northern Ecosystem Science
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Northern ecosystem processes play out across scales that are rare elsewhere on contemporary earth: large ranging predator–prey systems are still operational, invasive species are rare, and large-scale natural disturbances occur extensively. Disturbances in the far north affect huge areas of land and are difficult to control or manage. Historically, disturbance patterns and processes ranging across a number of spatio-temporal scales have played an important role in the resilience of northern ecosystems. However, due to interactions with a warming climate, these disturbances are now erasing key legacies of the last millennia of ecosystem processes. Building on the concepts of legacies and cross-scale interactions, we highlight several general conceptual issues that represent key challenges for the future of northern ecosystem science, but that also have relevance to other biomes.
Keywordsarctic boreal succession disturbance permafrost wildfire carbon diversity trophic interactions niche
The ideas presented here have benefited from discussions with many colleagues as well as funding programs that have promoted collaborative research in the north, including NASA’s Terrestrial Ecosystems ABoVE program, the Government of the Northwest Territories’ Environment and Natural Resources division, the NSERC Discovery program, the Bonanza Creek LTER program supported by the NSF and the U.S. Forest Service, the Changing Cold Regions Network support by NSERC, the Permafrost Carbon Network, and SEARCH’s Permafrost Action Team.
- Hinzman LD, Bettez ND, Bolton WR, Chapin FS, Dyurgerov MB, Fastie CL, Griffith B, Hollister RD, Hope A, Huntington HP, Jensen AM, Jia GJ, Jorgenson T, Kane DL, Klein DR, Kofinas G, Lynch AH, Lloyd AH, McGuire AD, Nelson FE, Oechel WC, Osterkamp TE, Racine CH, Romanovsky VE, Stone RS, Stow DA, Sturm M, Tweedie CE, Vourlitis GL, Walker MD, Walker DA, Webber PJ, Welker JM, Winker KS, Yoshikawa K. 2005. Evidence and implications of recent climate change in northern Alaska and other Arctic regions. Clim Chang 72:251–98.CrossRefGoogle Scholar
- Lekevicius E. 2010. Vacant niches in nature, ecology, and evolutionary theory: a mini-review. Ekologija 55:165–75.Google Scholar
- Price DT, Alfaro RI, Brown KJ, Flannigan MD, Fleming RA, Hogg EH, Girardin MP, Lakusta T, Johnston M, McKenney DW, Pedlar JH, Stratton T, Sturrock RN, Thompson ID, Trofymow JA, Venier LA. 2013. Anticipating the consequences of climate change for Canada’s boreal forest ecosystems 1. Environ Rev 21:322–65.CrossRefGoogle Scholar
- Turetsky MR, Amiro BD, Bosch E, Bhatti JS. 2004. Historical burn area in western Canadian peatlands and its relationship to fire weather indices. Glob Biogeochem Cycles 18:GB4014.Google Scholar