Seed germination in rainforest fragments

Article Abstract:

It has been established that seeds planted in rainforest fragments are less likely to germinate than those in continuous forest. This can have damaging demographic repercussions because it reduces the emergence of seedlings. Seeds in fragments are exposed to a range of edge effects, including hotter, drier conditions. All of these effects can influence the cues needed for germination. It was also found that seeds protected with mesh from leaf-litter accumulation and seed predation were more likely to germinate.

Research, Germination, Rain forest plants

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Genes, patents and sex determination

Article Abstract:

Britain's Committee on Human Fertilization and Embryology overreacted to the news that a clinic in north London will provide prospective parents with a sex determination service. This service will use genetic testing to tell whether a child will be male or female not only before birth but even before conception. Sex determination of this sort is unlikely to change Britain's population. The committee should focus on more weighty matters.

Social aspects, Editorial, Social policy, United Kingdom. Human Fertilization and Embryology Authority, Sex determination, Diagnostic, Sex determination (Diagnosis)

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