A harvest method informed by traditional knowledge maximises yield and regeneration post harvest for karengo (Bangiaceae)

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• 作者：Sorrel A. O’Connell-Milne ; Christopher D. Hepburn
• 关键词：Bangiaceae ; Harvest ; Karengo ; Mātauranga ; New Zealand ; Porphyra
• 刊名：Journal of Applied Phycology
• 出版年：2015
• 出版时间：February 2015
• 年：2015
• 卷：27
• 期：1
• 页码：447-454
• 全文大小：663 KB
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• 刊物主题：Plant Sciences; Freshwater & Marine Ecology; Plant Physiology; Ecology;
• 出版者：Springer Netherlands
• ISSN：1573-5176

文摘

Within New Zealand, a group of bladed intertidal algae in the Bangiaceae family known as karengo is harvested entirely from wild stocks and is culturally important for Māori (New Zealand’s indigenous people) both as a food and historically for trade. To sustainably maintain this wild resource, it is important to optimise harvest strategies. Knowledge gained from intergenerational harvest of karengo by Māori communities could provide a sustainable harvest technique. Harvesting trials between July 2013 and August 2013 assessed the effect of a traditional harvest method informed by mātauranga Māori (traditional knowledge), pulling by hand, on the regeneration of karengo. Traditional pulling was compared with cutting and scraping harvest methods. A sustainable harvest technique was determined by assessing yield and post harvest regeneration within the winter growth period from each harvest method. Hand pulling resulted in the greatest biomass regeneration post harvest, providing a 46?% greater yield than scraping and no discernable difference in biomass 6?weeks post harvest compared to unharvested plots. A later harvest (August) resulted in an 83?% greater yield than an early harvest (July). Therefore, to obtain an optimal yield whilst maintaining a sustainable harvest, hand pulling late in the season is recommended. These findings support and strengthen a harvest technique based on mātauranga Māori and provide information to empower kaitiaki (Māori guardians) to actively manage and preserve highly valued wild karengo stocks.