Herbicide management of invasive cattail (Typha × glauca) increases porewater nutrient concentrations
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- 作者：Beth A. Lawrence ; Shane C. Lishawa ; Yarency Rodriguez…
- 刊名：Wetlands Ecology and Management
- 出版年：2016
- 出版时间：August 2016
- 年：2016
- 卷：24
- 期：4
- 页码：457-467
- 全文大小：730 KB
- 刊物类别：Biomedical and Life Sciences
- 刊物主题：Life Sciences
Hydrobiology
Evolutionary Biology
Ecology - 出版者：Springer Netherlands
- ISSN：1572-9834
- 卷排序：24
文摘
Invasive wetland plants are the primary targets of wetland management to promote native communities and wildlife habitat, but little is known about how commonly implemented restoration techniques influence nutrient cycling. We tested how experimental mowing, herbicide application, and biomass harvest (i.e., removal of aboveground biomass) treatments of Typha-invaded mesocosms altered porewater nutrient (NO3−, NH4+, PO4−3) concentration and supply rate, vegetation response, and light penetration to the soil surface. We found that while herbicide application eliminated the target species, it also reduced native plant density and biomass, as well as increased porewater nutrient concentration (PO4−3, NO3−) and supply rates (N, P, K) up to a year after treatments were implemented. Because herbicide application promotes nutrient enrichment, it may increase the likelihood of reinvasion by problematic wetland invaders, as well as cause eutrophication and deleterious algal blooms in adjacent aquatic systems. Our data suggest that biomass harvest should be considered by managers aiming to reduce Typha abundance without eradicating native diversity, avoid nutrient leaching, as well as possibly utilizing biomass for bioenergy.KeywordsBiomass harvestHybrid cattailGlyphosateMowingManagementWetland management