Differences in Lake Restoration Strategies in Cold and Warm Climate Regions

Most lake restoration methods have been developed for temperate lakes and cannot be readily transferred to subtropical lakes and particularly not to tropical water bodies because they differ in many aspects from lakes in the temperate zone. For instance, in the e

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Figure 8 Percent cover of aquatic macrophytes and chlorophyll a in Lake Conroe, Texas, before and after diploid grass carps were stocked in 1981-82 (33 fish ha-1). Modified from Cook GD etal. (2005), originally from Maceina MJ etal. (1992). Journal of Freshwater Ecology 7: 81-95.

19SC 19S1 19S2 19S3 19S4 19S5 1986

Figure 8 Percent cover of aquatic macrophytes and chlorophyll a in Lake Conroe, Texas, before and after diploid grass carps were stocked in 1981-82 (33 fish ha-1). Modified from Cook GD etal. (2005), originally from Maceina MJ etal. (1992). Journal of Freshwater Ecology 7: 81-95.

tropics, the faster nutrient cycling combined with higher predation pressure on zooplankton, as a consequence of a lower percentage of pelagic piscivores and repeated fish recruitment over the season, result in reduced grazer control of phytoplankton. There is also a higher risk of dominance by cyanobacteria owing to a higher probability of N limitation in the warmer climate and also to greater dominance of nuisance floating plants. Little is, however, known about the long-term effects of restorations in (sub)tropical lakes.

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