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- Title
The influence of increased iron concentration on survival and growth of seedlings and young plants of eelgrass Zostera marina.
- Authors
Wang, Xi‐Tao; Zhang, Qian; Liu, Yan‐Shan; Zhang, Pei‐Dong; Li, Wen‐Tao
- Abstract
Iron (Fe) is an essential nutrient for plants but toxic at high concentrations. We subjected seedlings and young plants of eelgrass Zostera marina to different seawater iron concentrations (500, 600, 700, 800, 1,000 and 1,500 μg/L) for 30 days under controlled laboratory conditions. Natural seawater without added iron (500 μg/L) was used as reference seawater. No sediments were provided to avoid iron scavenging by particle surfaces in the sediment. We measured plant response in terms of survivorship, morphology, growth rate and productivity. Survival analysis combined with morphological, dynamic and productive assessment suggested that the optimum seawater iron concentration for the establishment of Z. marina seedlings and young plants is 700 μg/L. The no observed effect concentration, lowest observed effect concentration, lethal concentration that caused an increase in mortality to 10% of that of the control, and the effect concentration that caused a decrease in growth to 10% of that of the control values of young plants were significantly lower than those of seedlings, implying an increased sensitivity to high Fe concentrations (>1,000 μg/L). This study further develops our understanding of the physiological ecology of the early life stages of Z. marina and provides data that could prove helpful in the development of successful eelgrass restoration and conservation.
- Subjects
IRON content of seawater; SEEDLINGS; ZOSTERA marina; PLANT growth; SEED morphology
- Publication
Marine Ecology, 2017, Vol 38, Issue 3, pn/a
- ISSN
0173-9565
- Publication type
Article
- DOI
10.1111/maec.12425