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Riparian ecosystem collapse in Rocky Mountain National Park

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DataONE2025-04-23 更新2025-04-26 收录
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Understanding the drivers of ecosystem collapse is critical for resource management, particularly for protected areas mandated to preserve biodiversity. In Rocky Mountain National Park, Colorado, tall willows (Salix spp.) dominated riparian vegetation and a beaver-willow state was the natural ecosystem type in the Colorado River headwaters. However, willows comprise a portion of elk diets, and are a preferred food for recently introduced moose, and the vegetation structure has changed dramatically since the early 2000s. To assess ecosystem changes we analyzed time series data on willow height from 1997 to 2021 inside and outside of three exclosures built to exclude ungulates, area of tall willows in 1999 and 2019, area of open water from 1953 to 2019, vegetation composition in 1998 and 2021, ground water depth from 1996 to 2021, surface water flow from 1953 to 2023, and climate from 1950 to 2023. Tall willow coverage and open water area declined by >90% from 1999 to 2019. Willow heig..., , , # Riparian ecosystem collapse in Rocky Mountain National Park [https://doi.org/10.5061/dryad.2z34tmpvz](https://doi.org/10.5061/dryad.2z34tmpvz) ## Description of the data and file structure This research documents changes in riparian ecosystems in the Colorado River headwaters in Rocky Mountain National Park. There are time series data that extend 10-70 years back in time. There are photo time series and data time series. Some files are in GIS format. ### Files and variables #### File: allwell\_dtw\.csv **Description:** Depth to water table data  ##### Variables | SiteName | Site identifier | | :---------------- | :------------------------------------------- | | Date | Date format date | | Year | Year | | scaled\_date\_por | Scaled and centered period of record date | | scaled\_date\_doy | Scaled and centered within year date  | | mean\_d...,

探明生态系统崩溃的驱动机制,对于自然资源管理至关重要,尤其是对于被赋予生物多样性保护使命的保护区而言。科罗拉多州落基山国家公园内,高大柳属(Salix spp.)植物为河岸植被的优势类群,而河狸-柳生态系统曾是科罗拉多河源头区域的自然生态系统类型。然而,柳树是马鹿的食物来源之一,同时也是新近引入的驼鹿的偏好食物,自21世纪初以来,该区域的植被结构已发生显著变化。为评估生态系统变化,本研究分析了多组时间序列数据:1997至2021年三座有蹄类排除围栏内外的柳树高度数据、1999年与2019年的高大柳树覆盖面积数据、1953至2019年的开阔水域面积数据、1998年与2021年的植被组成数据、1996至2021年的地下水埋深数据、1953至2023年的地表径流量数据,以及1950至2023年的气候数据。1999年至2019年间,高大柳树覆盖度与开阔水域面积均下降了90%以上。柳树高度…… # 落基山国家公园河岸生态系统崩溃 [https://doi.org/10.5061/dryad.2z34tmpvz](https://doi.org/10.5061/dryad.2z34tmpvz) ## 数据与文件结构说明 本研究记录了落基山国家公园内科罗拉多河源头区域的河岸生态系统变化。研究数据包含时间跨度为10至70年的多组时间序列数据,涵盖照片时序数据与实测时序数据,部分文件采用GIS格式存储。 ### 文件与变量 #### 文件:allwell_dtw.csv **文件说明:** 地下水位埋深数据 ##### 变量 | 变量名 | 变量说明 | | :---------------- | :------------------------------------------- | | 站点名称(SiteName) | 站点标识符 | | 日期(Date) | 日期格式的日期值 | | 年份(Year) | 年份 | | 标准化记录年份(scaled_date_por) | 经标准化与中心化的记录年份 | | 标准化年内日序(scaled_date_doy) | 经标准化与中心化的年内日期(日序) | | 平均埋深(mean_d...) | ...
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2025-04-24
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