This is the first study using geolocators (global location sensing, GLS) to track the movements of a pelagic tropical seabird. We used GLS to describe at-sea distribution and activity patterns of wedge-tailed shearwaters Puffinus pacificus breeding on Aride Island, Seychelles, in the late chick-rearing, non-breeding and pre-breeding periods. During late chick-rearing and pre-breeding periods, shearwaters foraged relatively close to the colony. In the non-breeding period, shearwaters; were found on a west-east gradient along the equator, between 5 degrees N and 10 degrees S. Some of the tracked individuals showed little dispersion, staying as close as 1000 km to Aride Island, while others travelled 3500 km to the Central Indian Ocean Basin. Individual core areas of activity showed little overlap. Overall, wedge-tailed shearwaters showed short-distance movements and exploited relatively unproductive oceanic waters. At-sea distribution largely matched that of yellowfin and skipjack tunas, emphasising the importance of the association with subsurface predators rather than associations with physical oceanographic features that enhance primary productivity. During the non-breeding period, the feeding activity of, shearwaters was mainly concentrated in the daylight period, when tunas also forage. A different behaviour, characterised by a much lower proportion of the night sitting on the sea surface, was recorded in the pre-laying exodus of 1 female to more productive waters, suggesting a different feeding strategy and/or targeting of different prey. Knowledge of the at-sea distribution of wedge-tailed shearwaters allows quantification of the overlap with industrial fisheries, which will be crucial to devise fisheries policies for the Indian Ocean with important implications for the conservation of this species.
video sharing sites are time to think about what is really effective business model – cash flow is always the hardest truth, and not just focus on popularity and traffic.
three years ago, when Google bought Youtube for $1 billion 650 million, domestic video sharing sites cheered. However, the following days were not perfect, although Google conducted a series of "YouTube" transformation, but the sharing model has always been difficult to find commercial expectations. Recently, the U.S. "business week" and pointed out that the Google should change the video site into a video search engine, not only can search their own video site, also should be able to search for external video.
The year of
, the myth of Youtube had Chinese video sharing sites such as bamboo shoots after a spring rain like growth, but one billion dollars in venture capital, did not make a profitable business: these sites is still in the burn period. Youtube’s aura is fading, and its charm is beginning to be replaced by Hulu.com, an Internet site for free viewing of licensed video programs, providing video resources to users via authorized on-demand modes.
in the world’s largest video on demand platform of popular network CEO Luo Jiangchun, a global network of video sites including Youtube, have realized by UGC (video sharing), it is difficult to support a video site in the future, the transition to the video on demand is an inevitable trend. Because video sharing user stickiness is very low, its user transfer costs are generally low. Video on demand has become the mainstream video, how to play its mainstream value is the next industry to do.
domestic video sites have also been aware of the crisis, Tudou CEO Wang Wei even throw video sharing traffic is’ industrial waste ‘self mockery, and began to try self revolutionary transformation. Quietly, video sharing sites that used to assemble traffic in a shared mode began to turn around. Youku said it will focus on television, collaboration and marketing as part of its future focus, with television, film and television production agencies and other content providers.
even the thunder has also joined the camp of video on demand. Two months ago, to download software to the main business of the company said the thunder is trying to transition to the online video portal, thunder CEO Zou Shenglong said, "the thunder’s idea is that television content providers will be the product placement to thunder channels to sell, as the channel platform thunder is collected from the advertising into."
effective business model
everyone knows that the video site is "burn money" industry, Tencent Inc CEO Ma Huateng once said, the network video for very high bandwidth, server, content resources, enormous investment, to burn $2 million a month, so the Tencent will not rush to large-scale investment in this area.