Global S&T Development Trend Analysis Platform of Resources and Environment
Fishing hotspots show where sub-Antarctic seabirds at risk | |
admin | |
2019-05-22 | |
发布年 | 2019 |
语种 | 英语 |
国家 | 英国 |
领域 | 资源环境 |
正文(英文) | A new study highlights that sub-Antarctic seabirds are most at risk from unsustainable fishing during the southern hemisphere winter and in the south Atlantic and Southwest Indian Oceans. The link between fishing and the steep decline in seabird populations is well established, but the identification of problem ‘hotspots’ will better help agencies to conserve a number of threatened species. The study is published in the Journal of Applied Ecology this week (22 May). Scavenging birds like albatrosses and petrels are attracted to fishing vessels because the baited lines and offal discharge are an easy meal. All too often, they are caught on baited fishing hooks or are injured in collisions with cables that haul or monitor the trawl nets, and break their wings. Albatrosses can live for over sixty years and spend the majority of their lives at sea, making monitoring very difficult. Advances in tracking technology have made it possible for researchers to gather detailed data about their foraging behaviours at different life stages. This enables scientists to predict where they are most likely to be victims of bycatch. Over the last two decades, researchers have used miniature electronic tags to record bird movements. The tags are placed either on the back feathers (weighing less than 50g) or are attached to rings on the legs of birds (less than 5g). Lead author Dr Tommy Clay, a seabird ecologist at University of Liverpool, says:
Scientists hope this research will allow for greater regulation and accountability of fishing fleets. There are already a variety of effective bycatch mitigation measures available. Fleets can set their baited fishing lines at night when birds aren’t feeding, meaning they won’t be attracted to floating bait and at risk of swallowing the hooks. Running lines with flapping streamers parallel to longlines during setting or to trawl cables can act like a scarecrow, discouraging albatrosses and petrels from the areas of greatest risk. Co-author Professor Richard Phillips, Head of the Higher Predators and Conservation Group at British Antarctic Survey, says:
The main challenge is enforcement. Dr Cleo Small who leads the BirdLife International Marine Programme (hosted by the Royal Society for the Protection of Birds) and a co-author of the paper, says:
A comprehensive large-scale assessment of fisheries bycatch risk to threatened seabird populations by Thomas A. Clay1, 2 *, Cleo Small3, Geoffrey N. Tuck4, Deborah Pardo2, Ana P. B. Carneiro5, Andrew G. Wood2, John P. Croxall5, Glenn T. Crossin6, Richard A. Phillips2 is published in the Journal of Applied Ecology. Read it here More information The study was funded by the Government of South Georgia and the Sandwich Islands (GSGSSI) and is a collaboration between the British Antarctic Survey, University of Liverpool, Royal Society for the Protection of Birds (RSPB) and BirdLife International in the UK, CSIRO in Australia, and Dalhousie University in Canada. Seabirds are amongst the most globally-threatened of all groups of birds. Of the 29 albatross and large petrels species covered by the Agreement on the Conservation of Albatrosses and Petrels (ACAP), 19 are listed as threatened by the International Union for Conservation of Nature (IUCN): 11 are Vulnerable, 5 Endangered and 3 are Critically Endangered. Most of the remaining species are listed as Near Threatened (8), and just two species are listed as Least Concern. British Antarctic Survey monitors the large and diverse populations of seabirds on Bird Island (South Georgia) and Signy Island (South Orkneys). Long-term population studies of albatross and petrels at these two sites have been carried out by British Antarctic Survey since the early 1960s. |
URL | 查看原文 |
来源平台 | British Antarctic Survey |
文献类型 | 新闻 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/233709 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | admin. Fishing hotspots show where sub-Antarctic seabirds at risk. 2019. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[admin]的文章 |
百度学术 |
百度学术中相似的文章 |
[admin]的文章 |
必应学术 |
必应学术中相似的文章 |
[admin]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论