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Category Archives: Lab News Archive

new_safine_photo

Annual Ram Myers Lecture: Dr. Carl Safina

Lab News Archive

Productivity is a central determinant of population dynamics with consequences for population viability, resilience to exploitation, and extinction. In fish, the strength of a cohort is typically established during early life stages. Traditional approaches to measuring productivity do not allow for interannual variation in the maximum reproductive rate, a parameter governing population productivity. Allowing such process variation provides the ability to track dynamic changes instead of assuming a static productivity regime. Here we develop and evaluate a multivariate stock–recruitment state-space model to simultaneously estimate time-varying stock productivity and synchronicity of dynamics across populations.

October 16, 2015
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cod_pic

Declining productivity of cod stocks

Lab News Archive Uncategorized

Productivity is a central determinant of population dynamics with consequences for population viability, resilience to exploitation, and extinction. In fish, the strength of a cohort is typically established during early life stages. Traditional approaches to measuring productivity do not allow for interannual variation in the maximum reproductive rate, a parameter governing population productivity. Allowing such process variation provides the ability to track dynamic changes instead of assuming a static productivity regime. Here we develop and evaluate a multivariate stock–recruitment state-space model to simultaneously estimate time-varying stock productivity and synchronicity of dynamics across populations.

May 27, 2014
Details
plankton_pic

Effects of sea surface warming on marine plankton

Lab News Archive

Ocean warming has been implicated in the observed decline of oceanic phytoplankton biomass. Some studies suggest a physical pathway of warming via stratification and nutrient flux, and others a biological effect on plankton metabolic rates; yet the relative strength and possible interaction of these mechanisms remains unknown. Here, we implement projections from a global circulation model in a mesocosm experiment to examine both mechanisms in a multi-trophic plankton community.

May 26, 2014
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theguardian

100 million sharks killed each year, say scientists

Lab News Archive

theguardian

March 1, 2013
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newscientist

Now you see them…

Lab News Archive

New Scientist

April 1, 2012
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ny_lobster

Lobsters Find Utopia Where Biologists See Trouble

Lab News Archive

The New York Times

August 1, 2011
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nature

Commercially valuable fish species hit the red list

Lab News Archive

Nature

July 1, 2011
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bluefin_tuna_single

Range contraction in large pelagic predators

Lab News Archive

Large reductions in the abundance of exploited land predators have led to significant range contractions for those species. This paper shows similar responses in highly mobile tuna and billfish. It implies ecological extirpation of heavily exploited species across parts of their range.

June 1, 2011
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science

Seeing Deeply Into the Sea’s Biodiversity

Lab News Archive

Science

August 6, 2010
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wsj

Vital Marine Plant Life at Risk

Lab News Archive

Wall Street Journal

July 28, 2010
Details
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Read More from Dr. Worm @CBCOceansGuy
  • Biology Department, Dalhousie University, Halifax, NS
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    • Sonya Lee -
    • (902) 494-2146
    • sonya.lee@dal.ca
  • |
    • Boris Worm -
    • (902) 494-2478
    • bworm@dal.ca