Effects of cutting and sowing seeds of native species on giant ragweed invasion and plant diversity in a field experiment

Chaeho Byun, Ho Choi, Hojeong Kang

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Ambrosia trifida is a highly invasive annual plant, but effective control methods have not been proposed. Among various eradication methods, cutting is a simple measure to control invasive plants, and sowing seeds of native plants may effectively increase biotic resistance to invasion. In this study, we conducted a field experiment with two treatments: cutting and sowing seeds of six native or naturalized plants. Results: We found a significantly lower A. trifida abundance after cutting than in the control (77% decrease). Sowing seeds of native species did not provide any additional benefit for the control of A. trifida, but increased the importance values and diversity of other native vegetation. The abundance of A. trifida was negatively correlated with that of other plant taxa based on plant cover, biomass, and density. However, biotic resistance of sown plants was not effective to control invasion because A. trifida was so competitive. Conclusions: We concluded that cutting is an effective measure to control Ambrosia trifida while sowing seeds of native plants can increase native plant diversity.

Original languageEnglish
Article number28
JournalJournal of Ecology and Environment
Volume44
Issue number1
DOIs
Publication statusPublished - 2020 Dec

Bibliographical note

Funding Information:
We thank Hyona Kim, Yunjae Kim, and Chaeyoung Byun for assistance with the fieldwork. We also thank Minwoo Oh for drawing the study site map in QGIS. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (2018R1C1B6005351).

Funding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (2018R1C1B6005351).

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology

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