Observer error is an unavoidable aspect of vegetation surveys involving human observers. We quantified four components of interobserver error associated with long-term monitoring of prairie vegetation: overlooking error, misidentification error, cautious error and estimation error. We also evaluated the association of plot size with pseudoturnover due to observer error, and how documented pseudochanges in species composition and abundance compared with recorded changes in the vegetation over a 4-year interval.

中文翻译：

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草地植被调查中观察者间的误差：来源和意义

观察者错误是涉及人类观察者的植被调查不可避免的方面。我们量化了与长期监测草原植被相关的观察者间误差的四个组成部分：俯视误差，错误识别错误，谨慎错误和估计错误。我们还评估了地块大小与由于观察者错误导致的假周转之间的关系，以及与记录的植被在4年间隔内的变化相比，如何记录物种组成和丰度的假变化。