Inter- and Intraspecific Competition in Invasive and Co-Occurring Weedy Plant Species.

While invasive success of alien plant species is often attributed to their superior competitive abilities, it is also suggested that competitive ability depends on the target species of competition and resource availability. In addition, it remains unclear whether invaders and co-occurring plants in the introduced area exhibit distinctive inter- and intraspecific competitive intensities. This study aimed to evaluate the competitive ability of a successful invader, , through a combination of field surveys and a growth chamber experiment.

Effects of Workplace Violence on Emotional Distress.

The current study assessed the effects of workplace violence (WPV) and fear related to WPV on community mental health (CMH) workers' emotional distress. This cross-sectional study used structural equation modeling (SEM) and comprised participants who were CMH workers in Korea. We used WPV questionnaires and the Korean version of the Patient-Reported Outcomes Measurement Information System® item bank to evaluate emotional distress.

Workplace Violence Experienced by Community Mental Health Workers.

A cross-sectional online survey was conducted to 1) investigate the prevalence of workplace violence and workers' emotional distress, 2) explore factors associated with workplace violence, and 3) assess workers' needs for preventive measures. A total of 763 community mental health workers participated in Korea. Among them, 85.