Resilience to fire of Dracophyllum subulatum (Ericaceae) frost flat heathland, a rare ecosystem in central North Island, New Zealand

Autor:	Sarah J. Richardson, M. C. Smale, Neil Fitzgerald
Rok vydání:	2011
Předmět:	education.field_of_study Secondary succession biology Ecology Dracophyllum Population Context (language use) Plant Science Ecological succession biology.organism_classification Geography Abundance (ecology) Botany Frost Ecosystem education Ecology Evolution Behavior and Systematics
Zdroj:	New Zealand Journal of Botany. 49:231-241
ISSN:	1175-8643 0028-825X
DOI:	10.1080/0028825x.2010.526950
Popis:	We measured secondary succession in permanent plots for 15 years after a lightning-induced fire in a 90-year-old frost flat heathland dominated by Dracophyllum subulatum at Rangitaiki, North Island, New Zealand. We placed this succession in the longer term context provided by earlier published data from the same site. Species re-establishment was rapid, with all of the consistently present species of mature heathland present by 15 years. The new Dracophyllum population has reached its pre-burn density, although cover is still minimal. Vascular plant cover began to decline 11 years after fire, but non-vascular cover continued to increase. Poa cita declined dramatically in abundance after 11 years. Earlier studies at the site demonstrate that nearly the entire species complement of mature heathland is present by 25 years, indication of a direct succession. With substantial resilience to fire, frost flat heathland is a fire-adapted ecosystem in a country where such ecosystems are rare.
Databáze:	OpenAIRE
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