Habitat use of Indo-pacific humpback dolphins (Sousa chinensis) in Hong Kong

Ancient jades map 3,000 years of prehistoric exchange in Southeast Asia

“…During the Iron Age, such jade craftsmen, with or without the help of transporting middlemen, carried or acquired their raw materials from Taiwan, then traveled and/or resided along the shorelines of the South China Sea to produce extremely uniform jade ear ornaments to suit the demands of local elites. The most extensive evidence for such trade postdates 500 B.C., by which time the use of jade in Taiwan itself was already in decline (15).…”

“…In Taiwan itself, tools and ornaments made of Fengtian nephrite have been found in Ͼ108 sites dating from the early Neolithic to the Iron Age (Ϸ3000 B.C. to 500 A.D.) (15).…”

Distribution and group dynamics of Indo-Pacific humpback dolphins (Sousa chinensis) in the western Pearl River Estuary, China

“…Chemical pollution, heavy vessel traffic, coastal development, depletion of prey resources, acoustic disturbance, marine debris and irresponsible ecotourism may all contribute to the degradation and loss of humpback dolphin habitat in this area (Jefferson 2000;Jefferson and Hung 2004;Hung 2008). Knowledge on movement patterns and population structure are essential for managing anthropogenic impacts on wild cetaceans (Hastie et al 2003).…”

“…1). In the past, systematic line-transect vessel surveys have been conducted extensively on humpback dolphins in the EPRE in the past decade (including Hong Kong waters), and basic information on their population biology in this area has been well documented (Jefferson 2000;Jefferson and Hung 2004;Jia et al 2000;Hung and Jefferson 2004;Hung 2008;Parsons 1997 present study, a 12-month vessel-based line transect survey programme was conducted in the WPRE to collect baseline information on humpback dolphins in this area, including their distribution, seasonal movements and group dynamics. The relationship between the dolphins residing in the EPRE and WPRE was also examined.…”

Mapping cumulative impacts on Hong Kong's pink dolphin population

“…In fact, this species has been red-listed as "Near Threatened" by the International Union for Conservation of Nature (IUCN) due to identified threats such as habitat and seabed destruction, water pollution, vessel disturbances, and accidental by-catch (IUCN, 2013). Although previous research has investigated the dolphin's ecology (Jefferson, 2000;Parsons, 1998), distribution (Jefferson, 2000;Jefferson and Hung, 2004), behaviors (Jefferson, 2000;Ng and Leung, 2003;Piwetz et al, 2012) and even their reactions to individual human disturbances (Hung, 2008;Jefferson and Hung, 2004;Jefferson et al, 2009;Sims et al, 2012), no studies have attempted to spatially investigate their response to the cumulative impacts in the area to this date.…”