The natural reasons claim that the effects of introducing GMOs into nature (in the case of the RAM, the natural Madeiran forest) have not been adequately studied, although many articles have been published in which concerns are raised with regard to the consequences of deliberately releasing GMOs into nature and to the resulting environmental effects which might be expected.
En ce qui concerne les raisons naturelles, les autorités portugaises affirment que les effets de l’introduction des OGM dans la nature (dans le cas de la région autonome de Madère, la forêt naturelle de Madère) n’ont pas été correctement étudiés.