Individual and population indicators of Zostera japonica respond quickly to experimental addition of sediment-nutrient and organic matter
Han, Q.; Soissons, L.M.; Liu, D.; van Katwijk, M.; Bouma, T.J. (2017). Individual and population indicators of Zostera japonica respond quickly to experimental addition of sediment-nutrient and organic matter. Mar. Pollut. Bull. 114(1): 201-209. dx.doi.org/10.1016/j.marpolbul.2016.08.084
Amanipulative field experimentwas designed to investigate the effects of sediment-nutrients and sediment-organicmatterson seagrasses, Zostera japonica, using individual and population indicators. The results showed thatseagrasses quickly responded to sediment-nutrient and organicmatter loading. That is, sediment-nutrients positivelyimpacted on seagrasses by increasing N content of leaves and roots, leaf length and belowground biomass.Sediment-organic matter loading lowered N content of seagrass leaves and belowground biomass. Negative effectsof organic matter loadingwere aggravated during nutrient loading, by decreasing Ncontent of leaves, P contentof roots, leafwidth, shoot number in the middle period of the experiment, increasing C/N ratio of leaves, C/Pand N/P ratio of roots and above to belowground biomass ratio of seagrasses. Consequently, Z. japonica could beconsidered as a fast indicator to monitor seagrass ecosystem status in the eutrophic areas and facilitate tointerpreting the response of seagrasses to multiple stressors.
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