Strengths and weaknesses of museum and national survey data sets for predicting regional species richness: comparative and combined approaches
Strengths and weaknesses of museum and national survey data sets for predicting regional species richness: comparative and combined approaches
复制标题
DOI：
10.1111/j.1366-9516.2005.00164.x
复制
发表时间：
2005-07-01
影响因子：
4.6
通讯作者：
Van Cleve, J
中科院分区：
文献类型：
--
作者：
Guralnick, R;Van Cleve, J
我们编制了科罗拉多州东北部鸟类物种发生的三个独立数据集，以测试如何将预测的物种丰富度与使用所有数据的综合分析相比较。第一个数据集是来自两个主要存储库的地理参考区域博物馆数据集——丹佛自然博物馆和科罗拉多科学与大学博物馆。两个国家调查数据集是繁殖鸟类调查（夏季）和大后院鸟类统计（冬季）。结果分析表明，博物馆数据集给出的丰富度估计值最接近组合数据集，但显示出倾斜的丰富度分布，而调查数据集即使包含更多记录，也不能准确估计总体丰富度。合并后的数据集允许一个数据集的优点来弥补其他数据集的缺点。一些博物馆的数据集很可能显示出丰度分布的倾斜，因为收藏者可能会自我选择代表性不足的物种，而不是常见的物种。
We compiled three independent data sets of bird species occurrences in northeastern Colorado to test how predicted species richness compared to a combined analysis using all the data. The first data set was a georeferenced regional museum data set from two major repositories-the Denver Museum of Nature, and the Science and University of Colorado Museum. The two national survey data sets were the Breeding Bird Survey (summer), and the Great Backyard Bird Count (winter). Resulting analyses show that the museum data sets give richness estimates closest to the combined data set while exhibiting a skewed abundance distribution, whereas survey data sets do not accurately estimate overall richness even though they contain far more records. The combined data set allows the strengths of one data set to augment weaknesses in others. It is likely some museum data sets display skewed abundance distributions due to collectors' potentially self-selecting under-represented species over common ones.