Long-term abundance time-series of the High Arctic terrestrial vertebrate community of Bylot Island, Nunavut

Arctic ecosystems present unique opportunities for community-wide monitoring, in part due to their relatively low species richness. However, conducting research in these remote environments poses significant logistical challenges, resulting in long-term monitoring being exceedingly rare. Here, we focus on the long-term, intensive ecological monitoring efforts conducted on the south plain of Bylot Island (~400 km2, Nunavut, Canada), which has generated a remarkable dataset spanning up to 30 years, a rarity in tundra ecosystems. Our goals are to i) provide long-term time series of annual species densities for the broadest possible range of species and years, measured across various spatial scales, to assess of interannual variability and trends in species density; and ii) upscale vertebrate abundance, annually when feasible, or otherwise as long-term averages, to the landscape scale (~400 km2) to allow food web modelling. We have standardized data obtained with different field methods to ..., Complete documentation describing the project’s context and objectives, the study site, the data collection process, the methods used to estimate species abundance, the resulting data set files with the associated metadata can be found in MetadataS1.pdf at: https://doi.org/10.5281/zenodo.13993828., , # Long-term abundance time-series of the High Arctic terrestrial vertebrate community of Bylot Island, Nunavut

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### **Access data, metadata and code**

#### Data - `Data_S1/`: [https://doi.org/10.5061/dryad.44j0zpcnt](https://doi.org/10.5061/dryad.44j0zpcnt)

#### Methods and metadata - `MetadataS1.pdf`: [https://doi.org/10.5281/zenodo.13993828](https://doi.org/10.5281/zenodo.13993828)

#### Code and R project - `BYLOT_species_abundance_dataset.zip`: [https://doi.org/10.5281/zenodo.13993826](https://doi.org/10.5281/zenodo.13993826)

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#### Objectives

With over a decade of additional community-wide monitoring compared to earlier studies, our goals are to i) provide long-term time series of annual vertebrate density measured at various spatial scales and for the broadest possible range of species and years, to allow the assessment of interannual variability and trends in species density; and ii) upscale annual vertebrate abundance or sometimes long-term averages to the landscape ...,

北极生态系统凭借其相对较低的物种丰富度（species richness），为全群落监测（community-wide monitoring）提供了独特契机。然而，在这些偏远环境中开展研究面临诸多后勤保障难题，致使长期监测工作极为罕见。本研究聚焦加拿大努纳武特地区巴洛特岛（约400平方千米）南部平原开展的长期密集型生态监测工作，该项目生成了跨度长达30年的珍贵数据集，这在苔原生态系统（tundra ecosystems）中实属罕见。本研究的目标有二：其一，提供涵盖尽可能多物种与年份、多空间尺度下的年度物种密度长期时间序列，以评估物种密度的年际波动与变化趋势；其二，在条件允许时按年度、其余情况则以长期平均值为基准，将脊椎动物丰度（vertebrate abundance）外推至整个景观尺度（约400平方千米），从而支撑食物网建模（food web modelling）工作。我们已对不同野外方法获取的数据进行标准化处理，以……有关项目背景与目标、研究样地、数据采集流程、物种丰度估算方法的完整文档，以及附带元数据（metadata）的最终数据集文件，均可通过MetadataS1.pdf获取，链接为：https://doi.org/10.5281/zenodo.13993828。

# 努纳武特地区巴洛特岛高北极陆地脊椎动物群落长期丰度时间序列

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### **数据、元数据与代码获取**

#### 数据集 - `Data_S1/`：[https://doi.org/10.5061/dryad.44j0zpcnt](https://doi.org/10.5061/dryad.44j0zpcnt)

#### 方法与元数据 - `MetadataS1.pdf`：[https://doi.org/10.5281/zenodo.13993828](https://doi.org/10.5281/zenodo.13993828)

#### 代码与R项目文件 - `BYLOT_species_abundance_dataset.zip`：[https://doi.org/10.5281/zenodo.13993826](https://doi.org/10.5281/zenodo.13993826)

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#### 研究目标
相较于此前的研究，本项目新增了十余年的全群落监测工作，研究目标如下：其一，提供覆盖尽可能多物种与年份、多空间尺度下的年度脊椎动物密度长期时间序列，以评估物种密度的年际波动与变化趋势；其二，将年度脊椎动物丰度（部分情况下采用长期平均值）外推至整个景观尺度……