Navigation Links
Effects of climate change to further degrade fisheries resources: UBC researchers
Date:11/20/2011

A new study led by University of British Columbia researchers reveals how the effect of climate change can further impact the economic viability of current fisheries practices.

"Fisheries are already providing fewer fish and making less money than they could if we curbed overfishing," says Rashid Sumaila, principal investigator of the Fisheries Economics Research Unit at UBC and lead author of the study. "We could be earning interest, but instead we're fishing away the capital. Climate change is likely to cause more losses unless we choose to act."

Partly supported by the Pew Charitable Trusts, National Geographic, the World Bank and U.S. National Oceanic and Atmospheric Administration, the study is a broad view of the impact of climate change on fisheries and their profitability. It is published online today in the journal Nature Climate Change.

Over the last century the ocean has become warmer and more acidic. Other human-led factors, such as pollution and overfishing, have also been hard on marine species. With ocean warming, many species will move further towards the poles and into deeper water.

While fisheries in a few regions, such as the far north, may benefit from climate change, many other regions, particularly those in the tropics, can expect losses in revenues. Regional examples can help inform what could happen globally. For example, the reduction in landings of pelagic fisheries in Peru as a result of changes in sea surface temperature during the 1997-1998 El Nio event caused more than US$26 million of revenue loss.

"Changes in temperature and ocean chemistry directly affect the physiology, growth, reproduction and distribution of these organisms," says William Cheung, a biologist at the UBC Fisheries Centre. "Fish in warmer waters will probably have a smaller body size, be smaller at first maturity, with higher mortality rates and be caught in different areas. These are important factors when we think of how climate change will impact fisheries."

"This study provides an early glimpse of how climate change might impact the economics of fishing," says Sam Herrick, a NOAA scientist and co-author. "We must continue to study how climate change, combined with other factors, will affect marine ecosystems and the productivity of fishery resources."

Biologically, maintaining more abundant populations can help increase fish's capacity to adapt to environmental change. Curbing overfishing is crucial to making marine systems more robust and ready for changes that are already underway.

"This study highlights the potential negative impacts of climate change on the profitability of fisheries," said Vicky Lam, UBC graduate student and co-author. "The next generation of scientists must put more effort on exploring ways to minimize the impacts of climate change."

Fish stocks will also be more robust to climate change if the combined stresses from overfishing, habitat degradation, pollution runoff, land-use transformation, competing aquatic resource uses and other anthropogenic factors are minimized

"We have to remember that the effect of climate change on the marine environment will occur alongside the impacts on land," says Daniel Pauly, a UBC fisheries biologist and co-author. "It will not be easy to divert resources from one sector to help another sector. This is why a strong governance system is needed to temper the losses on the sectors that are worst hit."

"Governments must be anticipatory, rather than reactive," says Sumaila. "We all need to think more of the future while we act now."


'/>"/>
Contact: Rashid Sumaila
r.sumaila@fisheries.ubc.ca
604-822-0224
University of British Columbia
Source:Eurekalert

Related biology news :

1. New approaches may prevent certain side effects in BRAF mutation-positive melanoma
2. Source found for immune system effects on learning, memory
3. Research links water disinfection byproducts to adverse health effects
4. Researchers discover that same gene has opposite effects in prostate, breast cancers
5. NIH launches research program to explore health effects from climate change
6. Australias endangered bettong reveals how weather effects species distribution
7. Female promiscuity can rescue populations from harmful effects of inbreeding
8. UMass researcher points to suppression of evidence on radiation effects by 1946 Nobel Laureate
9. Effects of prenatal stress passed across generations in mice
10. Earth: 9/11s lingering effects: Tracking the long-term impact of the dust
11. Antioxidant spices reduce negative effects of high-fat meal
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/6/2017)... LONDON , April 6, 2017 ... Control, RFID, ANPR, Document Readers, by End-Use (Transportation & ... Energy Facility, Oil, Gas & Fossil Generation Facility, Nuclear ... Healthcare, Educational, Other) Are you looking for ... Authentication sector? ...
(Date:4/4/2017)...   EyeLock LLC , a leader of iris-based ... Patent and Trademark Office (USPTO) has issued U.S. Patent ... an iris image with a face image acquired in ... 45 th issued patent. "The ... the multi-modal biometric capabilities that have recently come to ...
(Date:3/30/2017)... , March 30, 2017 Trends, opportunities and ... and behavioral), by technology (fingerprint, AFIS, iris recognition, facial ... and others), by end use industry (government and law ... financial and banking, and others), and by region ( ... , Asia Pacific , and the ...
Breaking Biology News(10 mins):
(Date:4/21/2017)... ... April 21, 2017 , ... ... were the focus of researchers, engineers, product developers, and industry suppliers gathered last ... Sponsored by SPIE, the international society for optics and photonics , the ...
(Date:4/20/2017)... ... April 20, 2017 , ... Assured Enterprises, Inc. ... offer a full spectrum of digital security goods and services. The strategic partners ... the ground-breaking proactive cybersecurity services and products through Assured Enterprises. The two companies ...
(Date:4/20/2017)... QC , April 20, 2017 /PRNewswire/ - Prometic Life Sciences ... presented new results at the International Liver Congress ("ILC") 2017 ... ("EASL") in Amsterdam on the positive ... a mouse model of obesity and metabolic syndrome. ... According to Dr. Lyne Gagnon, Vice-President ...
(Date:4/20/2017)... HACKENSACK, N.J. and PETACH TIKVAH, Israel ... (NASDAQ: BCLI), a leading developer of adult stem cell technologies ... Chief Executive Officer, will present at the Alliance for Regenerative ... Investor Day on Thursday, April 27, 2017 at 09:40 EDT ... Dr. Ralph Kern , MD, MHSc, Chief Medical Officer ...
Breaking Biology Technology: