Adverse effects on the integrity of a Site of Special Scientific Interest (SSSI) or on the conservation status of species and habitats protected by EU legislation outside SSSIs
Effeithiau andwyol ar gyfanrwydd Safle o Ddiddordeb Gwyddonol Arbennig (SDdGA) neu ar statws cadwraeth rhywogaethau a chynefinoedd a warchodir gan ddeddfwriaeth yr UE y tu allan i SDdGA