Can herbarium records be used to map alien species invasion and native species expansion over the past 100 years?
Can herbarium records be used to map alien species invasion and native species expansion over the past 100 years?
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DOI：
10.1111/j.1365-2699.2008.02043.x
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发表时间：
2009-04-01
影响因子：
3.9
通讯作者：
Hoagland, Bruce W.
中科院分区：
文献类型：
--
作者：
Crawford, Priscilla H. C.;Hoagland, Bruce W.
利用美国俄克拉荷马州100年的植物标本数据，确定是否可以观察到外来植物入侵和本地植物扩展的时间和空间模式，并消除此类分析中的植物标本收集偏差。俄克拉荷马州，美国。利用俄克拉荷马州维管植物数据库1903 - 2004年的植物标本记录，重建了两种外来入侵植物（日本红柳和柽柳）的采集历史。和3种乡土膨胀树种（Ambrosia psilostachya、Amphiachyris dracunculoides和Juniperus virginiana）。为了比较整体采集趋势，选择了本地非扩张类群作为对应物。我们记录了所有分类群在俄克拉荷马州每个乡镇的第一次收集的年份。对被占领乡镇的累积数量进行对数转换，对时间作图，并采用线性回归建模。线性回归的斜率代表非扩张性对应组随时间的采集趋势。然而，对于入侵和扩张物种，回归斜率代表采集努力加上入侵或扩张速率。我们通过将每个入侵或扩张物种的乡镇累计数除以对应组占据的乡镇累计数（比例曲线）计算入侵和扩张物种与非扩张物种的比例。入侵和扩张类群的采集记录地图显示没有明显的空间入侵或扩张模式。外来入侵类群的线性回归的斜率显着陡峭，比他们相关的本地非扩张性的同行，这表明在丰富的增加。北美圆柏（Juniperus virginiana L.）japonica和Tamarix spp.表现出一个或多个时期，在此期间，他们被收集在一个不成比例的速度比他们的本地非扩张people.Patterns的物种入侵和扩张在俄克拉荷马州检测技术开发的地区较长的收集植物的历史。比例曲线分析通过减少采集努力的影响，消除了标本馆数据中固有的一些偏差。回归模型和比例曲线分析都揭示了外来入侵物种的时间入侵模式。本地物种没有表现出明显的扩张模式。在最近建立的植物标本库中发现的信息可能不够灵敏，无法检测到本地物种丰度的增加。
To determine if the temporal and spatial pattern of alien plant invasion and native plant expansion can be observed using 100 years of herbarium data from Oklahoma, USA, and to eliminate herbarium collection biases in such analyses.Oklahoma, USA.Using herbarium records from the Oklahoma Vascular Plants Database from 1903 to 2004, we reconstructed the spatial and temporal collection history of two alien invasive taxa (Lonicera japonica and Tamarix spp.) and three native expansive species (Ambrosia psilostachya, Amphiachyris dracunculoides and Juniperus virginiana). To compare the overall collecting trend, groups of native non-expansive taxa were selected as counterparts. We recorded the year of the first collection in each township in Oklahoma for all taxa. The cumulative number of occupied townships was log-transformed, plotted against time and modelled with linear regression. The slope of the linear regression represented collection trend over time for the non-expansive counterpart group. However, for the invasive and expansive species, the regression slope represented the collection effort plus the invasion or expansion rate. We calculated the proportion of invasive and expansive species to non-expansive species by dividing the cumulative number of townships for each invasive or expansive species by the cumulative number of townships occupied by the counterpart group (proportion curve).Maps of the collection records of invasive and expansive taxa illustrated no discernible spatial invasion or expansion pattern. The slopes of the linear regression for alien invasive taxa were significantly steeper than those of their associated native non-expansive counterparts, indicating an increase in abundance. Juniperus virginiana, L. japonica and Tamarix spp. exhibited one or more periods during which they were collected at a disproportionately higher rate than their native non-expansive counterparts.Patterns of species invasion and expansion in Oklahoma were detected using techniques developed for regions with longer collecting plant histories. The proportion curve analysis eliminated some biases inherent in herbarium data by reducing the effect of collecting effort. Both the regression model and proportion curve analyses illustrate the temporal invasion patterns of alien invasive species. The native species did not show a clear expansion pattern. The information found in recently established herbaria may not be sensitive enough to detect the increase in abundance of native species.