In 1991, Graham Watson, Gibraltar's MEP, highlighted conservationists' fears that urban development, tourism and invasive plant species were threatening Gibraltar's own plants as well as birds and bat species.
Pada tahun 1991, Graham Watson, AP untuk Gibraltar, menekankan kekhawatiran para konservasionis bahwa pembangunan kota, pariwisata, dan spesies tumbuhan invasif mengancam tumbuhan asli Gibraltar, burung, dan kelelawarnya.