Dominated Ecosystems

Macroalgal-Dominated Communities Nitrogen Supply Controls 

Nitrogen Limitation of Marine Macroalgae Evidence and Approaches 926 

The Role of Marine Macroalgae in Nitrogen Retention, Cycling, Turnover, and Loss 928 

Macroalgae as a sink of nutrients nitrogen storage and retention 932 

Macroalgae as Indicators of Sources and Magnitude of Nitrogen Supply 935 

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Rencz AN, O Driscoll NJ, Hall GEM, Peron T, Tehner K, Burgess NM. 2003. Spatial variation and correlations of mercury levels in the terrestrial and aquatic components of a wetland dominated ecosystem Kejimkujik Park, Nova Scotia, Canada. Water Air Soil PoUut 143 271-288. 

Meng, F., Arp, P., Sangster, A., Brun, G.I., Rencz, A., Hall, G., Holmes, J., Lean, D., Clair, T. 2005. Modeling dissolved organic carbon, total and methyl mercury in Kejimkujik freshwaters. In Mercury Cycling in a Wetland Dominated Ecosystem A Multidisciplinary Study. Society of Environmental Toxicology and Chemistry, Pensacola, FL, 267-284. 

Wetzel, R. G. 1992. Gradient-dominated ecosystems Sources and regulatory functions of dissolved organic matter in freshwater ecosystems. Hydrobiologia 229 181—198. 

Mercury Cycling in a Wetland-Dominated Ecosystem A Multidisciplinary Study O Driscoll, Rencz, Lean 2005... 

Fe control on organic matter remineralization in a Phaeocystis-dominated ecosystem... 

The major difference among the three fjords was the timing of the vernal bloom. In April 1997, Balsfjord and Malangen were diatom-dominated ecosystem, whereas Ullsfjord was Phaeocystis-dominated (Reigstad et al. 2000). DMSP fluxes were positively related to the proliferation of Phaeocystis, while 234Th fluxes showed an inverse pattern (Fig. 4). Hence the question was raised what mechanism could lead to a system exporting DMSP and POC but not 234Th. 

Figure 20.5 Sources, sinks and cycling of N in macroalgal dominated ecosystems. Width of arrows and size of boxes indicate relative magnitudes.

Stromberg C. A. E. (2002) The origin and spread of grass-dominated ecosystems in the late Tertiary of North America preliminary results concerning the evolution of hypsodonty. Palaeogeogr. Palaeoclimatol. Palaeoecol. 177(1-2), suppl. 21, 59-75. 

Fishery and hydrography are obviously the major driving forces of the fate of the eastern Baltic cod stock. In the absence of a large foraging cod stock, sprat stocks thrive, foraging themselves on the food of cod larvae and on cod eggs as well, leading to a sprat-dominated ecosystem (Fig. 18.14). 

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