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Assessing the performance of object‐oriented LiDAR predictors for forest bird habitat suitability modeling

机译:评估面向对象的LIDAR预测因子的森林鸟类栖息地适用性建模性能

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Habitat suitability models (HSMs) are widely used to plan actions for species of conservation interest. Models that will be turned into conservation actions need predictors that are both ecologically pertinent and fit managers’ conceptual view of ecosystems. Remote sensing technologies such as light detection and ranging (LiDAR) can describe landscapes at high resolution over large spatial areas and have already given promising results for modeling forest species distributions. The point‐cloud (PC) area‐based LiDAR variables are often used as environmental variables in HSMs and have more recently been complemented by object‐oriented (OO) metrics. However, the efficiency of each type of variable to capture structural information on forest bird habitat has not yet been compared. We tested two hypotheses: (1) the use of OO variables in HSMs will give similar performance as PC area‐based models; and (2) OO variables will improve model robustness to LiDAR datasets acquired at different times for the same area. Using the case of a locally endangered forest bird, the capercaillie (Tetrao urogallus), model performance and predictions were compared between the two variable types. Models using OO variables showed slightly lower discriminatory performance than PC area‐based models (average ΔAUC?=??0.032 and ?0.01 for females and males, respectively). OO‐based models were as robust (absolute difference in Spearman rank correlation of predictions?≤?0.21) or more robust than PC area‐based models. In sum, LiDAR‐derived PC area‐based metrics and OO metrics showed similar performance for modeling the distribution of the capercaillie. We encourage the further exploration of OO metrics for creating reliable HSMs, and in particular testing whether they might help improve the scientist–stakeholder interface through better interpretability.
机译:栖息地适用性模型(HSMS)被广泛用于规划用于保护兴趣物种的行动。将转向保护行动的模型需要预测的是生态相关和健康管理人员的生态系统的概念观点。光检测和测距(LIDAR)等遥感技术可以在大型空间区域的高分辨率下描述景观,并且已经给出了森林种类分布的有希望的结果。点云(PC)基于区域的LIDAR变量通常用作HSMS中的环境变量,最近通过面向对象(OO)度量的更新互补。然而,尚未比较每种类型变量的效率捕获森林鸟类栖息地的结构信息。我们测试了两个假设:(1)在HSMS中使用OO变量将为基于PC区域的模型提供类似的性能; (2)OO变量将改善在不同时间在不同时间获取的LIDAR数据集的模型稳健性。使用局部濒危林鸟的情况,在两个可变类型之间比较了Capercaillie(Tetrao Urogallus),模型性能和预测。使用OO变量的模型显示出比基于PC区域的模型略低较低的歧视性能(平均ΔAUC?= ?? 0.032分别为雌性和男性0.01个)。基于OO的模型是坚固的(Spearman排名的绝对差异,预测的相关性?≤≤0.21)或比基于PC区域的模型更强大。总之,LiDar衍生的基于PC区域的指标和OO指标显示了类似的性能,用于建模Capercaillie的分布。我们鼓励进一步探索OO指标,以创建可靠的HSM,特别是通过更好的可解释性来测试它们是否有助于改善科学家 - 利益相关者界面。

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