Power to the people: Analysis of occupancy models informed by local knowledge

Power to the people: Analysis of occupancy models informed by local knowledge
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权力为民:根据当地知识分析入住模型

DOI:
10.1111/csp2.12753
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发表时间:
2022
影响因子:
3.1
通讯作者:
Brittain S
Brittain S
中科院分区:
环境科学与生态学3区
文献类型:
--
作者:
Brittain S

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功效分析有助于提高野生动物种群监测策略的成本效益,但很少考虑检测概率的变化,影响数据检测占用趋势的功效。我们探索了两种当地知情的方法(采访和每日日记)告知占用模型的力量,以检测喀麦隆社区森林内14种狩猎野生肉类的哺乳动物物种的占用变化。这是第一项使用由开发的公式来比较本地信息方法和相机陷阱之间的功效的研究,并确定最适合不同物种的监测策略。在这三种方法之间需要进行相当的努力来检测50%和80%的占用率变化,除非占用率小于0.13(日记数据)、0.03(摄像机)或0.6(访谈)。总体而言,如果占用率<0.54,则需要200个研究中心和4次重复访视,以检测占用率至少30%的变化。对于预算小的项目和检测率非常低的物种来说,实现检测对保护规划有用的任何水平的变化的能力通常是不可行的。然而,一些具有保护重要性的物种(例如,大猩猩、黑猩猩)的情况更容易发现,因此可以利用与当地社区合作收集的数据进行监测。
Power analyses help to improve the cost‐effectiveness of monitoring strategies for wildlife populations, but rarely account for variation in detection probability, affecting the power of data to detect trends in occupancy. We explore the power of occupancy models informed by two locally‐informed methods (interviews and daily diaries) to detect changes in occupancy for 14 mammal species hunted for wild meat within a community forest in Cameroon. This is the first study to use the formula developed by to compare power between locally‐informed methods and camera traps, and identify the monitoring strategies best suited to different species. Comparable effort is required between the three methods to detect 50% as 80% change in occupancy, except where occupancy is less than 0.13 (diary data), 0.03 (camera), or 0.6 (interviews). Overall, where occupancy <0.54, 200 sites and four repeat visits were required to detect at least a 30% change in occupancy. Achieving power to detect any level of change useful for conservation planning is often not viable for projects with small budgets and for species with very low detection rates. However, some species of conservation importance (e.g., gorilla, chimpanzee) are better detected and as such could be monitored using data collected in collaboration with local communities.
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