Laurel M. Brigham , Julie Coffey , Megan E. Lulow , Priscilla Ta , Sarah Kimball
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引用次数: 0
Abstract
The targeted removal of a non-native species can result in secondary invasions and other unexpected shifts in plant community composition, but the persistence of these effects is less well known. We investigated how the plant community changed at three time points including before removal (pre-removal), in the years directly following removal (post-removal), and 16 years following Tamarix removal (recent) in an arid depressional wetland. Non-native species cover increased and several non-native species invaded the study area in the years between post-removal surveys and the recent time period, suggesting Tamarix removal may have been a catalyst for increases in non-native species abundance. We also found an increase in the cover of species tolerating upland conditions, and these species were largely non-native. Overall, interactions between targeted removal and shifts in the abiotic environment due to climate change are important drivers of persistent shifts in the plant community. Hydrogeomorphic restoration is likely needed in tandem with invasive removal to see improvements in riparian health, particularly when the invasive species to be removed is a passenger in addition to being a driver of change.
期刊介绍:
The Journal of Arid Environments is an international journal publishing original scientific and technical research articles on physical, biological and cultural aspects of arid, semi-arid, and desert environments. As a forum of multi-disciplinary and interdisciplinary dialogue it addresses research on all aspects of arid environments and their past, present and future use.