Zostera

At the Ebro delta, P. pectinatus is mainly found in the least brackish areas, while Ruppia cirrhosa inhabits transitional zones between freshwater and seawater. Mixed stands of Zostera noltii, R. cirrhosa, and the floating macroalga Chaetomorpha linum develop in saline areas [37]. 

In terrestrial vegetation, copper is usually less than 35 mg/kg DW except near smelters, where it may approach 700 mg/kg DW, and in copper-accumulator plants that may normally contain as much as 13,700 mg/kg DW (Table 3.3). In aquatic vegetation, copper is elevated in metals-con-taminated water bodies, reaching concentrations as high as 1350 mg/kg DW in eelgrass (Zostera spp.) from contaminated bays vs. 36 mg/kg DW in conspecifics from reference sites (Table 3.3). 

Pondweed, Potamogeton spp. whole Pennsylvania Eelgrass, Zostera spp. 5.0-102.9 DW 1... 

Brix, H. and J.E. Lyngby. 1982. The distribution of cadmium, copper, lead, and zinc in eelgrass (Zostera marina L.). Sci. Total Environ. 24 51-63. 

Lyngby, J.E., H. Brix, and H.H. Schierup. 1982. Absorption and translocation of zinc in eelgrass (Zostera marina L.). Jour. Exper. Mar. Biol. Ecol. 58 259-270. 

The composition and amount of pigments in marine environments have also been vigorously investigated. Thus, on RP-HPLC method has been developed for the study of the effect of variable irradiance on the xanthophyll cycle of the seagrass Zostera marina. Extraction of pigments from seagrass was carried out by grinding the samples with acid-washed sand in the presence of 1 ml of 90 per cent acetone and the liquid phase was... 

P.J. Ralph, S.M. Polk, K.A. Moore, R.J. Orth and W.O. Smith, Jr, Operation of the xanthophyll cycle in the seagrass Zostera marina in responese to variable irradiance. J. Exp. Marine Biol. Ecol. 271 (2002) 189-207. 

Yang, Z. et al., Chemical studies on the marine algae Zostera sp., Zhongguo Haiyang Yaowu, 11,1, 1992 (CAem. Abstr. 118, 18925v, 1993). 

Cobalt in Nutrition. Johan Georg Forchhammer found in his great research on the composition of sea water that marine organisms concentrate the substances necessary for their existence and thus provide the chemist with a delicate indirect means of detecting certain elements which occur in sea water in very minute amounts. He discovered cobalt, for example, in the ashes of Zostera marina and in the fossil sponges of the chalk (123). 

Boron in Plants and Animals. When I had convinced myself, said Forchhammer, that boracic acid occurred m sea water, it appeared to me in the highest degree probable that the organisms of the sea would collect it, and that it might be found in their ashes. I was so fortunate as to begin my experiments with a plant that contained it in a rather large quantity, viz. the Zostera marina.. . . Even Fucus vesiculosus contains the same acid, but in a much smaller quantity (123)... 

In 1825 A.-J. Balard detected iodine in various marine mollusks, bare or testacean, such as the dons, the venus, oysters, etc. several corals and marine plants, the gorgonia, the zostera marina, etc., and especially in the mother liquor of the salt works supplied by the Mediterranean ... 

The first report, by Bell and coworkers61, identifying D-apiose as a component of a molecule other than a flavonoid glycoside was important for three reasons. (I) It was the first time that D-apiose had been described as a component of a polysaccharide, (2) the useful and widely emulated preparation of the di-O-isopropylidene derivative was detailed, and (3) a theory equating the recalcitrance of Posidonia australis and Zostera marina to microbial decay with the presence of some derivative of D-apiose was proposed. Subsequently, the presence of apiose in the polysaccharides of a large number of plants has been reported. 

Harrison, P.G. and Chan, A.T., 1980. Inhibition of the growth of microalgae and bacteria by extracts of eelgrass, (Zostera marina) leaves. Mar. Biol., 61 21-26. 

Kikuchi, T., 1979. 3apane e contributions on consumer ecology in eelgrass (Zostera marina L.) beds, with special reference to trophic relations and resources in inshore fisheries. Aquaculture, 9 195-160. 

McConnaughey, T. and McRoy, C.P., 1979. l C label identifies eelgrass (Zostera marina) carbon in an Alaskan estuarine food web. Mar. Biol., 53 263-269. 

Rasmussen, E., 1977. The wasting disease of eelgrass (Zostera marina) and its effects on environmental factors and fauna. In C.P. McRoy and C. Hellfferich (eds), Seagrass Ecosystems A Scientific Perspective. Marcel Dekker, New York, pp. 1-51. 

Tenore, K.R., Tietjen, 3.H. and Lee, 3.3., 1977. Effect of ineiofauna on incorporation of aged eelgrass, Zostera marina detritus by the polychaete Nephtys incisa. 3. Fish. Res. Board Can., 35 563-567. 

Moriarty, D.J.W. and Pollard, P.C., 1982. Diel variation of bacterial productivity in seagrass (Zostera capricorni) beds measured by rate of thymidine incorporation into... 

Quackenbush, R. C., D. Bunn, and W. Lingren. 1986. HPLC determination of phenolic acids in the water-soluble extract of Zostera marina L. (eelgrass). Aquatic Botany 24 83—89. 

Plus M. Chapelle A. Menesguen A. Deslous-Paoli J.-M. and Auby I. (2003). Modelling seasonal dynamics of biomasses and nitrogen contents in a seagrass meadow (Zostera noltii Hornem.) Application to the Thau lagoon (French Mediterranean coast). Ecological Modelling, 161, 213-238. 

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