Tundra Nunavik: Matrix of trophic relations between species of Labrador and northern Quebec

While most ecological studies focus on the impact of climate change on some populations or species, broader, ecosystem-based information is needed to better predict the future state of the Arctic. We therefore conducted a large-scale study aimed at modelling the vulnerability of tundra ecosystems to climate change. As part of this study, we gathered all known predator-prey relationships among mammal and bird species which distribution overlaps Labrador and the province of Quebec north of the 50°N. We also included some groups of arthropods (arachnida, coleoptera, diptera, hymenoptera, lepidoptera) and plants (lichens, grasses, low shrubs, erect shrubs, mosses, cyperacea, poacea) as well as three types of subsidies (marine, aquatic and terrestrial). To determine which mammal and bird species should be included in our analysis, we used the species distributions available on the International Union for the Conservation of Nature website (mammals) and on BirdLife International and NatureServe websites (birds). Arthropod and plant taxa to be included were determined through expert consultation. The trophic links collected originate from the scientific literature (over 200 articles consulted), from large databases (e.g., Birds of North America, IUCN Red List of Threatened Species), and from various experts from government and academia. A complete list of species/taxa included in the matrix is available in the Supplementary documentation.

尽管大多数生态学研究集中于气候变化对特定种群或物种的影响，但为了更准确地预测北极的未来状态，我们需要更广泛的基于生态系统的信息。因此，我们开展了一项大规模研究，旨在模拟苔原生态系统对气候变化的脆弱性。作为该研究的一部分，我们收集了所有已知在拉布拉多地区以及50°N以北魁北克省的哺乳动物和鸟类物种之间的捕食者-被捕食者关系。此外，我们还纳入了一些节肢动物（蜘蛛纲、鞘翅目、双翅目、膜翅目、鳞翅目）和植物（地衣、草本植物、低矮灌木、直立灌木、苔藓、莎草科、禾本科）群体，以及三种类型的补给（海洋、水生和陆地）。为了确定应纳入分析的哺乳动物和鸟类物种，我们利用了国际自然保护联盟网站（哺乳动物）和BirdLife International以及NatureServe网站（鸟类）上可用的物种分布信息。所纳入的节肢动物和植物分类群则是通过专家咨询确定的。收集到的营养联系来源于科学文献（查阅了超过200篇文章）、大型数据库（例如《北美鸟类》、《IUCN濒危物种红色名录》）以及来自政府和学术界各领域的专家。矩阵中包含的所有物种/分类群的完整列表可在补充文档中找到。