Vegetation phenology can be captured with digital repeat photography and linked to variability of root nutrition in Hedysarum alpinum
Vegetation phenology can be captured with digital repeat photography and linked to variability of root nutrition in Hedysarum alpinum
复制标题
可以通过数字重复摄影捕获植被物候，并将其与高山岩黄芪根部营养的变化联系起来
DOI：
10.1111/avsc.12000
复制
发表时间：
2013
影响因子：
2.8
通讯作者：
G. Stenhouse
中科院分区：
文献类型：
--
作者：
W. Nijland;N. Coops;Sean C. P. Coogan;C. Bater;M. Wulder;S. Nielsen;G. McDermid;G. Stenhouse
问题
重复(延时)摄影能否被用来检测林分的物候发育，并与重要的灰熊食物物种高山红花的根营养的时间模式联系起来？
位置
加拿大艾伯塔省落基山脉的东部山脚和前缘山脉。该地区包括各种成熟的和年轻的森林、湿地和高山栖息地。
方法
我们在三个地点部署了六个自动摄像机，以获取植物和森林林分尺度的日常照片。还每两周访问一次地块位置，以记录高山红豆杉和其他目标植物的物候期，并收集根样本以测定粗蛋白质含量。
结果
重复摄影和图像分析成功地检测到了所有关键的物候事件(即返青、开花、衰老)。给出了物候和根营养之间的关系，我们说明了如何使用相机数据来预测关键野生动物资源的时空分布和质量。
结论
重复摄影为监测林分尺度的植被发育、食物可获得性和营养质量提供了一种经济有效的方法。由于野生动物对其食物资源的可获得性和质量做出反应，有关资源可获得性变化的详细信息有助于土地利用管理决策，并加深我们对灰熊摄食生态和栖息地选择的理解。
Question
Can repeat (time-lapse) photography be used to detect the phenological development of a forest stand, and linked to temporal patterns in root nutrition for Hedysarum alpinum (alpine sweetvetch) an important grizzly bear food species?
Location
Eastern foothills and front ranges of the Rocky Mountains in Alberta, Canada. The area contains a diverse mix of mature and young forest, wetlands and alpine habitats.
Methods
We deployed six automated cameras at three locations to acquire daily photographs at the plant and forest stand scales. Plot locations were also visited on a bi-weekly basis to record the phenological stage of H. alpinum and other target plant species, as well as to collect a root sample for determination of crude protein content.
Results
Repeat photography and image analysis successfully detected all key phenological events (i.e. green-up, flowering, senescence). Given the relation between phenology and root nutrition, we illustrate how camera data can be used to predict the spatial and temporal distribution and quality of a key wildlife resource.
Conclusions
Repeat photography provides a cost-effective method for monitoring vegetation development, food availability, and nutritional quality at a forest stand scale. Since wildlife responds to the availability and quality of their food resources, detailed information on changes in resource availability helps with land-use management decisions and furthers our understanding of grizzly bear feeding ecology and habitat selection.
影响因子：
4.8
作者：
Hecht, M. H.;Marshall, J.;Woida, P. M.
通讯作者：
Woida, P. M.