Elodeid species as nursery beds for the successful seed restoration of Vallisneria spiralis L.

• Autorzy: Cao J. , Ruan H.
• Języki publikacji: EN

Abstrakty

EN

Submerged aquatic vegetation (SAV) is often difficult to restore due to their low seedling survival rates. Therefore, we hypothesized that the elodeid macrophytes serve as effective “nursery” areas to promote success for seedlings of other SAV. However, the high density of the elodeid community may inhibit the establishment of other SAV. An experiment was conducted to explore this “nursery effect” as a restoration approach to increase the success of seed restoration. Two elodeid species were pre-planted into mesocosms to create three levels of “nursery beds” i.e., bare, sparse (approx. 100 g m⁻²) and dense (approx. 200 g m⁻²). Seeds of Vallisneria spiralis were then placed into these beds to test the seed germination and growth of V. spiralis seedlings. After three months, seed germination was lower in the bare treatment than in the sparse and dense treatments. The growth of V. spiralis seedlings was greater in the sparse treatment than in the bare and dense treatments. These results revealed that the established elodeid bed had a positive effect on the seed restoration of V. spiralis but that the restoration efficiency was significantly reduced by the high-density cover of the elodeid community.

Słowa kluczowe

EN

submerged vegetation; aquatic vegetation; aquatic ecosystem; seedling survival; eutrophication; seed germination; Vallisneria spiralis

• Wydawca: -
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2015
• Tom: 63
• Numer: 1
• Opis fizyczny: p.53-62,fig.,ref.

Twórcy

autor

Cao J.

• College of Landscape Architecture, Nanjing Forestry University, Nanjing 210037, PR China

autor

Ruan H.

• College of Biology and the Environment, Joint Center for Sustainable Forestry Studies, Nanjing Forestry University, Nanjing 210037, PR China

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Identyfikatory

DOI

10.3161/15052249PJE2015.63.1.005