Daisuke Hayasaka

TL;DR: In this paper, the authors studied the characteristics of sandy beach species for regenerating their populations and the invasion patterns of originally non-sandy beach species or other newcomers after the tsunami, and concluded that the species composition of the beaches disturbed by a temporary large disaster is determined by dormancy and growth forms.

TL;DR: It is concluded that invasive S. alterniflora might have independently invaded Japan at different times through an East Asia route, particularly via China (i.e., secondary introduction), and it is important to strengthen the quarantine control on the importation of commodities, and to share information networks on invasive species between each region/port for minimizing further risks of biological species such as Spartina.

TL;DR: Fipronil’s insecticidal activity is practically the same for L. humile as for non-target arthropods, which would also affect the local arthropod biodiversity, and only the ‘Japanese main supercolony’ can be controlled with appropriate bait dosages that would have little impact on the other species.

TL;DR: Fipronil is an effective compound for controlling L. humile and can be used with minimal toxic effects on non-target organisms and supports the creation of more ambitious invasive ant management projects.

TL;DR: It is emphasized that more realistic prediction of community properties after the repeated application of agrochemicals in successive years should consider for 1) long-term population monitoring, 2) cumulative effects at least over the years, and 3) species' functional traits.