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How sustainable are elasmobranch cat...

Brekke, Heather Larissa.

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How sustainable are elasmobranch catches in Canadian Pacific commercial fisheries?

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	How sustainable are elasmobranch catches in Canadian Pacific commercial fisheries?/
作者:	Brekke, Heather Larissa.
面頁冊數:	95 p.
附註:	Source: Masters Abstracts International, Volume: 54-01.
Contained By:	Masters Abstracts International54-01(E).
標題:	Natural resource management. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1568992
ISBN:	9781321340389

How sustainable are elasmobranch catches in Canadian Pacific commercial fisheries?
Brekke, Heather Larissa.

How sustainable are elasmobranch catches in Canadian Pacific commercial fisheries? - 95 p.

Source: Masters Abstracts International, Volume: 54-01.

Thesis (M.S.)--Royal Roads University (Canada), 2015.

Few elasmobranchs are subject to directed commercial fisheries in Canada, but some are incidentally caught in fisheries targeting teleosts (DFO, 2007). Here I estimate the interception of elasmobranchs within Canadian Pacific commercial fisheries over the last 30 years (1980-2013) through a critical review of fisheries management and analysis of DFO catch statistics. A total of 208,642 tonnes of elasmobranches was recorded, with 93% of weight comprised of the commercially valued elasmobranchs: Spotted Spiny Dogfish, Big Skate, and Longnose Skate. Catch retention changed little over the last 30 years, with an average of three-quarters of the catch being retained. 1,824,792 individual elasmobranchs were annually intercepted within the past decade (2003-2013). In this past decade there has been a steep decline in elasmobranch catch. This is unlikely to be due to unsustainable fishing of declining populations. Instead, declining market demand and improved management has contributed to the emergence of sustainable elasmobranch fisheries.

ISBN: 9781321340389Subjects--Topical Terms:

589570
Natural resource management.

How sustainable are elasmobranch catches in Canadian Pacific commercial fisheries?
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