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Atlas Des Territoires D'intérêt Pour La Conservation Dans Les Basses

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Atlas Des Territoires D'intérêt Pour La Conservation Dans Les Basses Atlas of Sites of Conservation Interest in the St. Lawrence Lowlands – Methodology Report version 2, including Outaouais region June 2019 This report presents the results of the Atlas of sites of conservation interest in the St. Lawrence Lowlands, including analysis results for the Outaouais region. It follows a first version of the Atlas that was made available in October 2018. Other results will be added in the coming months, including the analysis of aquatic ecological units in areas where LIDAR data is not currently available. This document should be cited as follows: Jobin, B., L. Gratton, M.-J. Côté, O. Pfister, D. Lachance, M. Mingelbier, D. Blais, A. Blais et D. Leclair. 2019. Atlas of Sites of Conservation Interest in the St. Lawrence Lowlands – Methodology Report version 2, including Outaouais region. Environment and Climate Change Canada, ministère de l’Environnement et de la Lutte contre les changements climatiques, ministère des Forêts, de la Faune et des Parcs, St. Lawrence Action Plan, Québec, 186 p. Cover photos: © Thinkstockphotos Published by Authority of the Minister of the Environment © Her Majesty the Queen in Right of Canada, 2020 Published by Authority of the Ministre de l’Environnement et de la Lutte contre les changements climatiques du Québec © Government of Quebec, 2020 Cat. No.: En154-124/2020E-PDF ISBN: 978-0-660-36199-4 Aussi disponible en français sous le titre : Atlas des territoires d’intérêt pour la conservation dans les Basses-terres du Saint-Laurent – Rapport méthodologique version 2, incluant la région de l’Outaouais Production team Project coordination Benoît Jobin1 Marie-Josée Côté2 Louise Gratton3 Planning committee Name Organization Role Expertise Benoît Jobin ECCC1 Project Coordinator Open environments Marie-Josée Côté MELCC2 Member of the project team Aquatic environments Facilitator, member of the Open standards, forested areas, Louise Gratton Consultant3 project team flora Daniel Lachance MELCC2 Member of the project team Wetlands Olivier Pfister MELCC2 Member of the project team Forested areas, flora Marc Mingelbier MFFP4 Member of the project team St. Lawrence Corridor Line Couillard MELCC2 Member of the project team Flora Mapping and Spatial Analyses Matthieu Allard1 David Leclair7 Denis Bellavance2 Danielle Leclerc2 Daniel Blais2 Frédéric Poisson2 Sophie Benoît2 Martine Benoit1 Patrick Desautels5 Joany Suazo2 Collaborators Andréanne Blais6 Kateri Monticone8 Martin Joly2 Hubert Pelletier8 Annie Lebel7 Normand Villeneuve4 ____________________________________________________ 1 Environment and Climate Change Canada (ECCC) 2 Ministère de l’Environnement et de la Lutte contre les changements climatiques (MELCC) 3 Consultant 4 Ministère des Forêts, de la Faune et des Parcs (MFFP) 5 Néogis – Solutions géomatiques 6 Conseil régional de l’environnement du Centre-du-Québec 7 Bureau d’écologie appliquée 8 Nature Conservancy of Canada Canada i Acknowledgments We would like to thank all the people who contributed to this atlas by sharing knowledge, data or time, including Jean François Rail, Josée Tardif, Pierre Aquin, Bruno Drolet, Emmanuelle Fay, Sylvain Giguère, Karine Picard and Pierre André Bernier of the Canadian Wildlife Service of Environment and Climate Change Canada; Jacques Labrecque, Guy Jolicoeur, Vincent Piché and Tingxian Li of the Ministère de l'Environnement et de la Lutte contr e les changements climatiques; Jocelyn Gosselin, Édith Cadieux, Jason Samson, Antoine Nappi, Nathalie Desrosiers, Claudine Laurendeau, Valérie Simard, Yohann Dubois, Marc Antoine Couillard, Yves Paradis, Aïssa Sebbane, Hughes Bernard and Marie Noëlle Blais of the Ministère des Forêts, de la Faune et des Parcs; Gino Lévesque of the Ministère de l'Agriculture, des Pêcheries et de l'Alimentation; Stéphane Lamoureux and Simon Bédard of the Regroupement QuébecOiseaux; Stéphanie Côté of Nature-Action Québec; Frédéric Doyon of the Université du Québec en Outaouais; Pierre Drapeau of the Université du Québec à Montréal; Marc André Guertin and Philippe Lebel of the Université de Sherbrooke; Marc André Rhéaume of the Fédération des producteurs forestiers du Québec; Michèle Dupont Hébert of the Bureau d'écologie appliquée; Sylvio Demers and Thomas Buffin-Bélanger of the Université du Québec à Rimouski. ii Abstract One of the projects under the biodiversity conservation theme of the St. Lawrence Action Plan is the development of an integrated plan for conserving the St. Lawrence’s natural environments and biodiversity. Identifying sites of interest for biodiversity conservation was the first step in this integrated planning process leading to the production of the Atlas of sites of conservation interest in the St. Lawrence Lowlands. Conservation targets (coarse filter) selected for this atlas are woodlands, wetlands, open habitats (old fields, perennial crops), and aquatic environments. This report presents the methods that led to the production of this atlas. For each selected target, sites of conservation interest were determined up to a representativeness threshold of 20% for a given spatial reference unit (i.e., depositional contexts in the St. Lawrence Lowlands). To do so, sites with high conservation interest were first selected, those sites being located within or adjacent to protected areas or exceptional forested ecosystems, sites hosting species at risk and critical habitats, or those having unique ecological features. A prioritization analysis was then carried out on conservation targets using a multi- criteria analysis when the 20% representativeness threshold was not reached following the selection analysis. Other sites of interest not covered with the coarse filter targets and representing local sites with high conservation value were also determined (fine filter), such as rare aquatic environments of the St. Lawrence River (spawning sites), alvars, colonial bird nesting sites, other faunistic sites (e.g., nesting sites for Bank Swallow and Chimney Swift, etc.) and important floristic sites. Finally, a multitarget analysis was performed to determined regions with high concentration of sites of interest for multiple targets. Geospatial data of selected sites are publicly available. This will allow users to better visualize the geographical location of those sites of conservation interest and their associated conservation value. Users will also have the opportunity to adapt the determination of sites of high conservation value given their own spatial territory and conservation objectives. Because the conservation of sites with high biodiversity value is a shared responsibility; this atlas will reach objectives of several conservation organizations and stakeholders having a strong interest in the conservation of natural sites in the St. Lawrence Lowlands; such as non- governmental organizations, municipalities, RCMs, governments and academic institutions. In addition, because this atlas is intended to be a tool in landscape and land -use planning, we believe that upcoming conservation strategies for natural sites can be oriented towards sites with high conservation value and where there exists urgent needs for conservation using the information provided by this atlas. For example, this atlas could guide the production of regional wetlands and bodies of water plans that will be produced in coming years following the recently adopted Act respecting the conservation of wetlands and bodies of water. iii Résumé L’un des projets indiqués sous le thème de la conservation de la biodiversité du Plan d’action Saint-Laurent est l’élaboration d’un plan intégré de conservation des milieux naturels et de la biodiversité du Saint-Laurent. Pour les Basses-terres du Saint-Laurent, il a été convenu dans un premier temps de produire un atlas des territoires d’intérêt pour la conservation afin de déterminer les sites où les besoins de conservation sont les plus criants. Les cibles de conservation (filtre grossier) retenues sont les milieux forestiers, les milieux humides, les milieux ouverts (friches, cultures pérennes) et les milieux aquatiques. Ce document méthodologique expose la démarche soutenant la production de cet atlas. Pour chacun des éléments composant les cibles retenues, des sites à considérer pour la conservation ont été déterminés jusqu’à l’atteinte d’un seuil de 20 % de représentativité par unité spatiale de référence (p. ex., contextes de mise en place). Pour y parvenir, une sélection des milieux ayant une plus haute valeur de conservation a été réalisée, soit ceux qui hébergent des occurrences prioritaires et des habitats essentiels d’espèces en péril, des aires protégées, des écosystèmes forestiers exceptionnels et des sites irremplaçables. Des analyses de priorisation multicritère ont ensuite été effectuées si le seuil de 20 % de représentativité n’était pas atteint après l’analyse de sélection. De plus, s’ajoutent des éléments ponctuels d’importance pour la biodiversité (filtre fin), à savoir des habitats ou des occurrences reconnus scientifiquement qui ne sont pas considérés dans l’analyse des cibles de conservation. On parle ici de milieux aquatiques exceptionnels associés au couloir du Saint-Laurent (p. ex., des frayères), des alvars, des colonies d’oiseaux, des éléments fauniques (p. ex., des sites de nidification de l’hirondelle de rivage et du martinet ramoneur) et des occurrences floristiques d’importance. Enfin, une analyse multicible a été produite afin de déterminer des territoires où se concentrent des sites d’intérêt déterminés pour les cibles de conservation du filtre grossier.
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