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Exploring the utility of small unmanned aerial system products in remote visual stream ecological assessment
Restoration Ecology ( IF 3.2 ) Pub Date : 2020-06-24 , DOI: 10.1111/rec.13228
Alexandra D. Evans 1 , Kevin H. Gardner 1 , Scott Greenwood 1 , Bruce Pruitt 2
Affiliation  

Many restoration projects' success is not evaluated, despite available conventional ecological assessment methods. There is a need for more flexible, affordable, and efficient methods for evaluation, particularly those that take advantage of new remote sensing and geospatial technologies. This study explores the use of illustrative small unmanned aerial system (sUAS) products, made using a simple structure‐from‐motion photogrammetry workflow, coupled with a visual assessment protocol as a remote evaluation and ecological condition archive approach. Three streams were assessed in the field (“surface assessments”) using the Stream Visual Assessment Protocol Version 2 (SVAP2) and later illustrated in sUAS products. A survey of 10 stream experts was conducted to (1) assess the general utility of the sUAS products (high‐resolution video, orthomosaics, and 3D models), and (2) test whether the experts could interpret the products and apply the 16 SVAP2 elements remotely. The channel condition, bank condition, riparian area quantity, and canopy cover elements were deemed appropriate for remote assessment, while the riparian area quality, water appearance, fish habitat complexity, and aquatic invertebrate complexity elements were deemed appropriate for remote assessment but with some potential limitations due to the quality of the products and varying site conditions. In general, the survey participants agreed that the illustrative products would be useful in stream ecological assessment and restoration evaluation. Although not a replacement for more quantitative surface assessments when required, this remote visual approach is suitable when more general monitoring is satisfactory.

中文翻译:

探索小型无人机系统产品在远程视觉流生态评估中的实用性

尽管有常规的生态评估方法,许多恢复项目的成功还没有得到评估。需要一种更加灵活,负担得起且有效的评估方法,尤其是那些利用新的遥感和地理空间技术进行评估的方法。这项研究探索了使用示例性小型无人机系统(sUAS)产品的方法,该产品是通过简单的运动结构摄影测量工作流程以及视觉评估协议​​作为远程评估和生态状况存档方法而制成的。使用Stream Visual Assessment Protocol Version 2(SVAP2)在现场评估了三个流(“表面评估”),随后在sUAS产品中进行了说明。进行了10位流专家的调查,以(1)评估sUAS产品的通用性(高分辨率视频,矫形和3D模型),以及(2)测试专家是否可以解释产品并远程应用16个SVAP2元素。河道状况,河岸状况,河岸面积数量和冠层覆盖要素被认为适合进行远程评估,而河岸区质量,水面,鱼类栖息地复杂性和水生无脊椎动物复杂性要素被认为适合进行远程评估,但具有一定的潜力由于产品质量和现场条件的不同而受到限制。总体而言,参与调查的人同意这些说明性产品将对河流生态评估和恢复评估有用。尽管在需要时不能替代更定量的表面评估,但这种远程视觉方法适用于更常规的监测令人满意的情况。和3D模型),以及(2)测试专家是否可以解释产品并远程应用16个SVAP2元素。河道状况,河岸状况,河岸面积数量和冠层覆盖要素被认为适合进行远程评估,而河岸区质量,水面,鱼类栖息地复杂性和水生无脊椎动物复杂性要素被认为适合进行远程评估,但具有一定的潜力由于产品质量和现场条件的不同而受到限制。总体而言,参与调查的人同意这些说明性产品将对河流生态评估和恢复评估有用。尽管在需要时不能替代更定量的表面评估,但这种远程视觉方法适用于更常规的监测令人满意的情况。和3D模型),以及(2)测试专家是否可以解释产品并远程应用16个SVAP2元素。河道状况,河岸状况,河岸面积数量和冠层覆盖要素被认为适合进行远程评估,而河岸区质量,水面,鱼类栖息地复杂性和水生无脊椎动物复杂性要素被认为适合进行远程评估,但具有一定的潜力由于产品质量和现场条件的不同而受到限制。总体而言,参与调查的人同意这些说明性产品将对河流生态评估和恢复评估有用。尽管在需要时不能代替更定量的表面评估,但是当更常规的监测令人满意时,这种远程视觉方法是合适的。(2)测试专家是否可以解释产品并远程应用16个SVAP2元素。河道状况,河岸状况,河岸面积数量和冠层覆盖要素被认为适合进行远程评估,而河岸区质量,水面,鱼类栖息地复杂性和水生无脊椎动物复杂性要素被认为适合进行远程评估,但具有一定的潜力由于产品质量和现场条件的不同而受到限制。总体而言,参与调查的人同意这些说明性产品将对河流生态评估和恢复评估有用。尽管在需要时不能替代更定量的表面评估,但这种远程视觉方法适用于更常规的监测令人满意的情况。(2)测试专家是否可以解释产品并远程应用16个SVAP2元素。河道状况,河岸状况,河岸面积数量和冠层覆盖要素被认为适合进行远程评估,而河岸区质量,水面,鱼类栖息地复杂性和水生无脊椎动物复杂性要素被认为适合进行远程评估,但具有一定的潜力由于产品质量和现场条件的不同而受到限制。总体而言,参与调查的人同意这些说明性产品将对河流生态评估和恢复评估有用。尽管在需要时不能替代更定量的表面评估,但这种远程视觉方法适用于更常规的监测令人满意的情况。
更新日期:2020-06-24
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