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The Errors in Visual Estimation of Plants Cover in the Context of Education of Phytosociology Cover

The Errors in Visual Estimation of Plants Cover in the Context of Education of Phytosociology

By: Damian Chmura and  Anna Salachna  
Open Access
|Feb 2017

Abstract

In vegetation science including phytosociology, visual estimates of plant cover and point method belong to the common field method to record species composition and their abundance. Two methods were compared: Braun-Blanquet scale and point method using Levy bridge. A group of students performed measurements in five plots belonged to an oak-hornbeam forest Tilio-Carpinetum. It was revealed that there is a very high discrepancy in a observed number of species. Total mean numbers obtained are 13.4 and 31.2 for point method and Braun-Blanquet method respectively. However, there is the significant positive and medium correlation between two methods in terms of estimation of abundance of species. It can be concluded that point-method is not suitable for study of forest floor vegetation. It can be merged with other methods. Due to many repetitive measures, it can be helpful in learning of recognition of species.

DOI: https://doi.org/10.1515/cdem-2016-0006 | Journal eISSN: 2084-4506 | Journal ISSN: 1640-9019
Language: English
Page range: 75 - 82
Published on: Feb 10, 2017
Published by: Society of Ecological Chemistry and Engineering
In partnership with: Paradigm Publishing Services
Publication frequency: 2 issues per year
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© 2017 Damian Chmura, Anna Salachna, published by Society of Ecological Chemistry and Engineering
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.