Mechanical and chemical control of the invasive cordgrass Spartina densiflora and native plant community responses in an estuarine salt marsh

作者：Mateos Naranjo Enrique^*; Cambrolle Jesus; Garcia De Lomas Juan; Parra Raquel; Redondo Gomez Susana

来源：Journal of Aquatic Plant Management, 2012, 50: 106-111.

• breaking rhizomes
• herbicide
• invasive species
• marshes
• mowing

The South American cordgrass, Spartina densiflora, has invaded a wide range of saltmarsh areas in southern Spain. A field experiment to examine physical and chemical control of S. densiflora, including mowing, herbicide (glyphosate), mowing plus herbicide combination, and the breaking of rhizomes, was conducted in low-gradient marsh invaded by S. densiflora to find a means of controlling this invasive species. The growth parameters of density, as well as species richness and diversity, were used to assess the efficacy of different treatments in December 2007 and 2008. All treatments reduced live tiller density of S. densiflora after 1 and 2 years of treatment. Compared to the control, the reductions in tiller density with rhizome breaking, mowing plus herbicide, mowing, and herbicide application were 85, 65, 56, and 38% and 66, 70, 52, and 52% after 1 and 2 years of treatment respectively. Despite a reduction in S. densiflora abundance, none of the treatments eradicated this species completely. However, rhizome breaking and mowing plus herbicide treatments proved to have the highest control efficiency, and plots treated with these treatments contained the highest values of native species richness and diversity.

• 出版日期2012-7