caa a22 4500 605526745 CHVBK 20210128100804.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s10531-015-0880-1 doi (NATIONALLICENCE)springer-10.1007/s10531-015-0880-1 Paleoecology and fire history of Garry oak ecosystems in Canada: implications for conservation and environmental management [Elektronische Daten] [Marlow Pellatt, Marian McCoy, Rolf Mathewes] Garry oak (Quercus garryana) ecosystems are listed as "at-risk” or endangered throughout their global range. In Canada, they are an umbrella for over one hundred species that are endangered to some degree. In order to effectively recover or allow these species to persist where possible, understanding of the ecological processes essential to their ongoing survival is needed. Fire suppression, aboriginal land-use, climate change, and post-colonial development have lead to drastic changes in the structure and amount of Garry oak ecosystems in North America. This paper presents new data using pollen and charcoal analysis to reconstruct past vegetation change and disturbance regimes for Garry oak and coastal Douglas-fir ecosystems over the past ~500years. Significant change in vegetation at the study sites has occurred with the greatest change in community structure and decline in Garry oak ecosystems occurring after the end of the Little Ice Age and as the impacts of western colonization occurred in the mid to late 19th century. Understanding mean fire return intervals (MFRI), ecosystem dynamics over time, and the role of people in this ecosystem structure is critical to the success of conservation efforts that are designed to ensure the long-term survival of these communities. The MFRI, inferred from charcoal analysis, ranges from 26 to 41years on Vancouver and Pender Islands, Canada. Our results indicate that fire suppression, cessation of aboriginal land-use, climate change, western colonization and subsequent intensification of land-use has greatly altered Garry oak ecosystems. This study illustrates the utility of using paleoecological investigations to help in the development of land management strategies and prescribed burn plans. Her Majesty the Queen in Right of Canada, 2015 British Columbia nationallicence Eco-cultural landscapes nationallicence Environmental change nationallicence Fire history nationallicence Garry oak nationallicence Indigenous people land practices nationallicence Paleoecology nationallicence Pollen analysis nationallicence Charcoal analysis nationallicence Pellatt Marlow Ecological Restoration Division, Natural Resource Conservation, Protected Areas Establishment and Conservation Directorate, Parks Canada, 300-300 West Georgia Street, V6B 6B4, Vancouver, BC, Canada aut McCoy Marian Department of Biological Science, Simon Fraser University, V5A 1S6, Burnaby, BC, Canada aut Mathewes Rolf Department of Biological Science, Simon Fraser University, V5A 1S6, Burnaby, BC, Canada aut Biodiversity and Conservation Springer Netherlands 24/7(2015-07-01), 1621-1639 0960-3115 24:7<1621 2015 24 10531 https://doi.org/10.1007/s10531-015-0880-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10531-015-0880-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pellatt Marlow Ecological Restoration Division, Natural Resource Conservation, Protected Areas Establishment and Conservation Directorate, Parks Canada, 300-300 West Georgia Street, V6B 6B4, Vancouver, BC, Canada aut NATIONALLICENCE 700 1- McCoy Marian Department of Biological Science, Simon Fraser University, V5A 1S6, Burnaby, BC, Canada aut NATIONALLICENCE 700 1- Mathewes Rolf Department of Biological Science, Simon Fraser University, V5A 1S6, Burnaby, BC, Canada aut NATIONALLICENCE 773 0- Biodiversity and Conservation Springer Netherlands 24/7(2015-07-01), 1621-1639 0960-3115 24:7<1621 2015 24 10531