The broad similarity between two articles Ehlers, Worm & Reusch (2008) and Campanella et al. (2013) is that both papers emphasized the importance of the genetic diversity of Zostera marina, an ecologically important plant for coastal ecosystem to survive adverse environmental conditions arising from climate change, catastrophic events (storm, heat waves) and anthropogenic activities (pollution, eutrophication, habitat destruction etc). Ehlers et al. (2008) talked about the effects of temperature or heat waves on Z. marina and the significance of genetic diversity in Z. marina populations to adapt changing temperature in the environment. Campanella et al. (2013) compared genetic health of native and restored Z. marina populations for the effective
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(2008) admitted that the mesocosm experiment was not a perfect simulation of natural environment. The plausible reasons pointed out by them were the underrepresentation of certain grazer species, reduction of gastropod’s grazing activity and reduction in percentage of cyanobacterial mats. All of the above mentioned reasons could influence experimental result. However, the outcome was well suited to the other experimental results conducted before. Although, Campanella et al. (2013) did not mention any experimental flaw, partly because their experiment was conducted in a natural setting, they mentioned some inconsistency in the bottleneck effects for different …show more content…
(2008) observed a positive relationship between Z. marina shoot density and genetic diversity during the warm period of their laboratory experiment. However, their finding was not fully consistent with the previous field results. Considering the variations in field and laboratory data, they hypothesized that genetic diversity play a significant role on species resilience by providing various responses to environmental disturbances. This hypothesis is further confirmed by Campanella et al. (2013). Campanella et al. (2013) found that natural Z. marina populations in Barnegat Bay exhibit inbreeding, is mostly affected by bottleneck and do not show genetic diversity. Restored Z. marina populations show less inbreeding, are hybrid and do not show much genetic diversity. However, the genetic diversity in restored Z. marina populations is higher than the natural populations. This evidence supports the hypothesis that restored populations are genetically more diverse and healthier than the native or donor populations, specifically after multiple generations. Genetic diversity in restored Z. marina populations can be further improved by incorporating transplant as well as seeding, which can contribute more to produce healthy genetic pool. From the clonal diversity index, Campanella et al. (2013) also observed more sexual reproduction in restored population than the asexual reproduction, which indicates hybridization and ensures long term survival of the restored
(2008) admitted that the mesocosm experiment was not a perfect simulation of natural environment. The plausible reasons pointed out by them were the underrepresentation of certain grazer species, reduction of gastropod’s grazing activity and reduction in percentage of cyanobacterial mats. All of the above mentioned reasons could influence experimental result. However, the outcome was well suited to the other experimental results conducted before. Although, Campanella et al. (2013) did not mention any experimental flaw, partly because their experiment was conducted in a natural setting, they mentioned some inconsistency in the bottleneck effects for different …show more content…
(2008) observed a positive relationship between Z. marina shoot density and genetic diversity during the warm period of their laboratory experiment. However, their finding was not fully consistent with the previous field results. Considering the variations in field and laboratory data, they hypothesized that genetic diversity play a significant role on species resilience by providing various responses to environmental disturbances. This hypothesis is further confirmed by Campanella et al. (2013). Campanella et al. (2013) found that natural Z. marina populations in Barnegat Bay exhibit inbreeding, is mostly affected by bottleneck and do not show genetic diversity. Restored Z. marina populations show less inbreeding, are hybrid and do not show much genetic diversity. However, the genetic diversity in restored Z. marina populations is higher than the natural populations. This evidence supports the hypothesis that restored populations are genetically more diverse and healthier than the native or donor populations, specifically after multiple generations. Genetic diversity in restored Z. marina populations can be further improved by incorporating transplant as well as seeding, which can contribute more to produce healthy genetic pool. From the clonal diversity index, Campanella et al. (2013) also observed more sexual reproduction in restored population than the asexual reproduction, which indicates hybridization and ensures long term survival of the restored