BACKGROUND, AIM AND SCOPE During the last decades ecological conditions in West Africa have dramatically changed. Very evident is the climate change, which has resulted in a southward shift of the climate zones, e.g. a spread of the desert (Sahara) into the Sahelian zone. After the drought period of the early 1970s and 1980s, livestock density increased resulting in an intensification of grazin...

Off the Ningaloo coast of North West Western Australia, Spangled Emperor Lethrinus nebulosus are among the most highly targeted recreational fish species. The Ningaloo Reef Marine Park comprises an area of 4,566 km2 of which 34% is protected from fishing by 18 no-take sanctuary zones ranging in size from 0.08-44.8 km2. To better understand Spangled Emperor movements and the adequacy of sanctuar...

Wild life: The elusive fosa (Cryptoprocta ferox) is the top predator in the dry deciduous forests of Madagascar, but very little was known about its biology until the 1990s. The presence of volunteer groups studying its role in the forest’s ecology has also helped to protect its habitat. (Photo: Earthwatch/ Luke Dollar.) The world’s latest national park has just been created in the east of Russ...

• The increasing tourism services near protected areas affect adversely the landscape. anthropization index was applied considering land cover of different years. tourist infrastructure is in most anthropized sites buffer zone.

The non-orthogonal multiple access (NOMA) and millimeter-wave (mmWave) transmission enable the unmanned aerial vehicle (UAV) assisted wireless networks to provide broadband connectivity over densely packed urban areas. presence of malicious receivers, however, compromise security UAV-to-ground communications links, thereby degrading secrecy rates. In this work, we consider a NOMA-based strategy...