Establishing a sustainable harvest for canada yew (<i>Taxus canadensis</i> marsh.) in Ontario

Noland, Thomas L.; Rich, L.; Packalen, Maara S.

doi:10.5558/tfc2011-051

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…A supplementary analysis will be conducted for the North Bay site to determine the additional benefits of managing non-timber forest products. Canada yew (Taxus canadensis) is commercially harvested from the understory of forests throughout eastern Canada and sold to pharmaceutical companies for production of the anti-cancer drug Taxol ® (Noland et al 2011). It was established in the intensive plots on the North Bay study site.…”

Section: Benefit Cost Analysismentioning

confidence: 99%

The NEBIE plot network: Highlights of long-term scientific studies

Wayne

DacostaJennifer

NewmasterSteven

et al. 2017

The Forestry Chronicle

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The NEBIE plot network is a stand-scale, multi-agency research project designed to compare the ecological effects of a range of silvicultural treatments in northern temperate and boreal forest regions of Ontario, Canada. While research on silviculture intensities has been previously conducted, the NEBIE plot network is at a larger scale, and covers a wider range of intensities in a variety of northern temperate and boreal forest types. Details about experimental design, treatment designs and research sites, are presented in a companion paper which is published in this edition of The Forestry Chronicle. The operational scale of treatment plots allow for assessment of a variety of forest values. We used a criteria and indicator approach to organize long-term research studies on the network sites, with the goal of providing scientific findings that would inform forest policy. Pre-treatment, and 2-, 5-, and 10-year post-harvesting data have been collected. These initial data add to existing information on the effects of intensification of silviculture on biological diversity, forest productivity, ecosystem health and vitality, soil and water resources, contribution of enhanced forest management global carbon cycles, and long-term multiple socio-economic benefits of northern forests.Keywords: ecosystem services, forest research, silviculture, sustainable forest management RÉSUMÉ Le réseau de placettes NEBIE est un projet de recherche à l' échelle du peuplement regroupant plusieurs organismes et destiné à comparer les effets écologiques d'une gamme d'interventions sylvicoles dans les régions tempérée et boréale en Ontario au Canada. Même s'il y a déjà eu des travaux de recherche sur l'intensification de la sylviculture, le réseau de placettes NEBIE se situe à une bien plus grande échelle et se prête ainsi à expérimenter une plus vaste gamme d'intensités dans une variété de conditions dans les forêts tempérées et boréales. On trouvera plus de renseignements sur le plan expé-rimental, les traitements et les sites expérimentaux dans un autre article de ce numéro du The Forestry Chronicle. Le fait qu' on dispose de placettes à l' échelle opérationnelle permet d' évaluer une variété de valeurs forestières en même temps. Nous avons adopté une approche par critères et indicateurs pour disposer les sites expérimentaux à long terme sur les différentes stations du réseau en vue d' obtenir des résultats scientifiques qui puissent apporter des éclairages pour guider la politique forestière. On dispose maintenant de mesures prises avant les traitements puis 2, 5 et 10 ans après la récolte. Ces données de départ s'ajoutent à la documentation portant sur les effets de la sylviculture intensive sur la biodiversité, la productivité forestière, la santé et la vitalité des écosystèmes, les sols et les ressources en eau, la contribution de l'aménage-ment bonifié sur les cycles planétaires du carbone et les nombreux bienfaits socioéconomiques à long terme liés aux forêts nordiques.

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Section: Benefit Cost Analysismentioning

confidence: 99%

The NEBIE plot network: Highlights of long-term scientific studies

Wayne

DacostaJennifer

NewmasterSteven

et al. 2017

The Forestry Chronicle

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Modeling Canada yew (Taxus canadensis Marsh.) distribution and abundance in the boreal forest of northeastern Ontario, Canada

Dech¹,

Mayhew-Hammond²,

James³

et al. 2014

Ecological Indicators

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The impact of adhering to sustainable harvesting guidelines on the total photosynthetic capacity ofTaxus Canadensis

MartinSarah

LamontagneManuel

2018

The Forestry Chronicle

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Foliage of Canada yew (Taxus canadensis Marsh.) is commercially harvested for extracting taxanes used in anticancer pharmaceutical products. According to New Brunswick harvesting guidelines, only the last three years growth from four out of every five branches should be harvested. A study conducted in the understory of mixedwoods and tolerant hardwoods in northwestern New Brunswick estimated the impact of harvesting foliage on net photosynthetic activity of the residual plant. Net photosynthesis was measured on foliage of current to five-years-old in June, July and August to determine the contribution of each foliage age class to the photosynthetic capacity of a 6-year-old branch segment. Total biomass of each internode age class (0 to 5 and ≥ 6-years-old) was measured to calculate the impact of tip harvesting on percentage of biomass removed and on photosynthetic capacity. When following New Brunswick harvesting guidelines, harvesting removed 15 to 17% of the last three years growth foliage which corresponds to 24 to 36% of total net photosynthetic capacity. The impact of harvesting is greater on photosynthetic activity than on biomass because it is the young and most photosynthetically active foliage that is harvested.

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Establishing a sustainable harvest for canada yew (Taxus canadensis marsh.) in Ontario

Cited by 3 publications

References 16 publications

The NEBIE plot network: Highlights of long-term scientific studies

The NEBIE plot network: Highlights of long-term scientific studies

Modeling Canada yew (Taxus canadensis Marsh.) distribution and abundance in the boreal forest of northeastern Ontario, Canada

The impact of adhering to sustainable harvesting guidelines on the total photosynthetic capacity ofTaxus Canadensis

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