Twenty years of Salix height in response to experimental manipulation of browsing and water table, northern range of Yellowstone National Park

This respository contains multiple datasets collected during a 20 year investigation of the responses of willow (Salix spp.) communities in Yellowstone National Park after the restoration of large carnivores.  The study sought to understand whether the restoration of wolves to the food web cause a change in the state of willow communities that occured while wolves were absent. Each dataset has a corresonding file of metadata. , Sampling and experimental designs and methods used to collect the data were described in

Hobbs, N. T., D. B. Johnston, K. N. Marshall, E.C. Wolf, and D. J. Cooper. Does restoring apex predators to food webs restoreecosystems? Large carnivores in Yellowstone as a model system. Ecological Monographs.  In press.

, The data could be process further with almost any program, but we used R version 4.2.1 (2022-06-23) (R Core Team, 2022. R: A Language and Environment for Statistical Computing. R Foundation forStatistical Computing, Vienna, Austria) and the following packages:
[1] \"cowplot\"    \"gridExtra\"  \"bayesplot\"  \"HDInterval\" [5] \"MCMCvis\"    \"rjags\"      \"doParallel\" \"iterators\"  [9] \"foreach\"    \"dclone\"     \"Matrix\"     \"parallel\"  [13] \"coda\"       \"forcats\"    \"stringr\"    \"dplyr\"     [17] \"purrr\"      \"readr\"      \"tidyr\"      \"tibble\"    [21] \"ggplot2\"    \"tidyverse\"  \"stats\"      \"graphics\"  [25] \"grDevices\"  \"utils\"      \"datasets\"   \"methods\"   [29] \"base\" 
All of these programs are open-source, # Twenty years of Salix height in response to experimental manipulation of browsing and water table, northern range of Yellowstone National Park

#### Special thanks to the National Science Foundation

Collection of the the data provided in this repository was supported by awards from the National Science Foundation to Colorado State University (DEB 0717367, 1147369, 1655035)

#### Description of data collection

Experimental and sampling designs as well as descriptions of data collection procedures can be found in:
Hobbs, N. T., D. B. Johnston, K. N. Marshall, E.C. Wolf, and D. J. Cooper. Does restoring apex predators to food webs restore ecosystems? Large carnivores in Yellowstone as a model system. Ecological Monographs. In press.

#### Description of data files

* fall\_height\_data\_2001\_2020.csv contains annual measurements of height of individual willows at the end of the growing season. Metadata are found in fall\_height\_data\_metadata.pdf.
* browsing\_data\_2003\_2020.csv con...

本仓库包含一项为期20年的调查所采集的多份数据集，该调查针对黄石国家公园内大型食肉动物恢复后柳属（Salix spp.）群落的响应展开。本研究旨在探究：将灰狼重新引入食物网后，是否会改变灰狼缺席期间柳属群落的群落状态。每份数据集均配有对应的元数据文件。

数据采集所采用的采样与实验设计及方法，详见如下文献：
Hobbs, N. T., D. B. Johnston, K. N. Marshall, E.C. Wolf, 及 D. J. Cooper. 《将顶级捕食者重新引入食物网能否修复生态系统？以黄石公园大型食肉动物为模式系统》，《生态专论》，即将刊出。

本数据集可通过几乎任意程序进行进一步处理，本研究团队使用的是R版本4.2.1（2022-06-23）[R核心团队，2022. 《R：统计计算语言与环境》，奥地利维也纳R统计计算基金会]，并调用了以下R包：
[1] "cowplot" "gridExtra" "bayesplot" "HDInterval"
[5] "MCMCvis" "rjags" "doParallel" "iterators"
[9] "foreach" "dclone" "Matrix" "parallel"
[13] "coda" "forcats" "stringr" "dplyr"
[17] "purrr" "readr" "tidyr" "tibble"
[21] "ggplot2" "tidyverse" "stats" "graphics"
[25] "grDevices" "utils" "datasets" "methods"
[29] "base"

上述所有程序均为开源软件。
# 黄石国家公园北部区域：20年柳属株高响应采食与地下水位实验调控的数据集

#### 特别致谢
特别致谢美国国家科学基金会。

本仓库所收录数据集的采集工作，由美国国家科学基金会向科罗拉多州立大学提供的资助项目（编号DEB 0717367、1147369、1655035）支持完成。

#### 数据采集说明
实验与采样设计，以及数据采集流程的详细说明，详见如下文献：
Hobbs, N. T., D. B. Johnston, K. N. Marshall, E.C. Wolf, 及 D. J. Cooper. 《将顶级捕食者重新引入食物网能否修复生态系统？以黄石公园大型食肉动物为模式系统》，《生态专论》，即将刊出。

#### 数据文件说明
* `fall_height_data_2001_2020.csv` 包含2001至2020年每年生长季末期对单株柳树株高的测量数据。元数据详见`fall_height_data_metadata.pdf`。
* `browsing_data_2003_2020.csv` 包含……