Department of Fisheries Oceanography
When: Wednesday,
March 21, 2018
2:30 PM
-
3:30 PM
Where: > See description for location
Description: The School for Marine Science and Technology
Department of Fisheries Oceanography
Seminar Announcement
“A fish eat fish world: the role of predation in driving the dynamics of fish populations”
Dr. Kiva Oken
Postdoctoral Associate
Rutgers University, New Jersey
Wednesday, March 21, 2018
2:30 pm - 3:30 pm
SMAST-E rm. 101/102
836 South Rodney French Boulevard, New Bedford, MA
Abstract
Predation can have a major impact on the structure and dynamics of marine populations and ecosystems, but the relative strength of predator control is highly variable across ecosystems. In this talk, I will discuss two major hypotheses that have been proposed to explain variability in the strength of predator control: the diversity and synchrony of predator assemblages. Across North America and Europe, we found a wide range in the diversity of predator assemblages, whereas in most assemblages we observed a consistent pattern of independently varying populations (neither synchronous nor asynchronous). In addition, accounting for the different feeding habits (diet and consumption rate) of each predator population is important in interpreting these results. Then, I will use mathematical models to study two different examples where predation may play an important role in driving the dynamics of managed fish populations: 1) lingcod predation on overfished rockfish populations in the California Current, and 2) the potential of high mortality of predators, as well as fishery closures, to explain the population-level resilience of nearshore fish and invertebrates to the Deepwater Horizon oil spill.
To access the live broadcasting, go to https://echo360.org/ and click on "Alternate login"
you will have to login as smast@umassd.edu with the password: smastumassd
After login you will have to click on ALL CLASSES (MAR 700 - 01 - DEOS Seminar or MAR 700 - 02 - DFO Seminar) and click on the green LIVE streaming.
To view a video of an SMAST seminar (post-October 1, 2014), go to https://www.umassd.edu/smast/events/seminar-series/ and click on a highlighted title.
For additional information, please contact Chris Fox at cfox@umassd.edu.
Department of Fisheries Oceanography
Seminar Announcement
“A fish eat fish world: the role of predation in driving the dynamics of fish populations”
Dr. Kiva Oken
Postdoctoral Associate
Rutgers University, New Jersey
Wednesday, March 21, 2018
2:30 pm - 3:30 pm
SMAST-E rm. 101/102
836 South Rodney French Boulevard, New Bedford, MA
Abstract
Predation can have a major impact on the structure and dynamics of marine populations and ecosystems, but the relative strength of predator control is highly variable across ecosystems. In this talk, I will discuss two major hypotheses that have been proposed to explain variability in the strength of predator control: the diversity and synchrony of predator assemblages. Across North America and Europe, we found a wide range in the diversity of predator assemblages, whereas in most assemblages we observed a consistent pattern of independently varying populations (neither synchronous nor asynchronous). In addition, accounting for the different feeding habits (diet and consumption rate) of each predator population is important in interpreting these results. Then, I will use mathematical models to study two different examples where predation may play an important role in driving the dynamics of managed fish populations: 1) lingcod predation on overfished rockfish populations in the California Current, and 2) the potential of high mortality of predators, as well as fishery closures, to explain the population-level resilience of nearshore fish and invertebrates to the Deepwater Horizon oil spill.
To access the live broadcasting, go to https://echo360.org/ and click on "Alternate login"
you will have to login as smast@umassd.edu with the password: smastumassd
After login you will have to click on ALL CLASSES (MAR 700 - 01 - DEOS Seminar or MAR 700 - 02 - DFO Seminar) and click on the green LIVE streaming.
To view a video of an SMAST seminar (post-October 1, 2014), go to https://www.umassd.edu/smast/events/seminar-series/ and click on a highlighted title.
For additional information, please contact Chris Fox at cfox@umassd.edu.
Contact: > See Description for contact information
Topical Areas: School for Marine Sciences and Technology, SMAST Seminar Series