Optimal foraging and diel vertical migration in a life history model

Research output: Contribution to conferencePosterResearch

Abstract

Zooplankton such as copepods are known to perform diel vertical migration, avoiding the food rich surface during bright hours to avoid visual predator when they are most dangerous, and returning to the surface to feed at night. The resolution of this foraging behaviour requires fine time scale in the model,
unsuited for life history modeling. We propose a method based on optimal foraging theory to take into account the emergent feeding rates as a function of the copepod metabolic cost, latitude, time and predation. We predict that copepods will balance their growth rate and mortality, playing a safe strategy
when food is plentiful, but taking greater risks at low food concentrations. We apply these concepts to high latitude ecosystems where there is a strong seasonal variation in both food availability and day length. Specifically, during the summer, the midnight sun will force the animals to take more risk and maintain some feeding at the surface to cover their nutritional needs, compensate for predation mortality and sustain their growth
Original languageEnglish
Publication date2013
Publication statusPublished - 2013
EventASLO 2013 Aquatic Sciences Meeting: Learning for the future - Ernest N. Morial Convention Center, New Orleans, United States
Duration: 17 Feb 201322 Feb 2013
http://aslo.org/neworleans2013/

Conference

ConferenceASLO 2013 Aquatic Sciences Meeting
LocationErnest N. Morial Convention Center
CountryUnited States
CityNew Orleans
Period17/02/201322/02/2013
Internet address

Cite this

Sainmont, J., Andersen, K. H., & Visser, A. (2013). Optimal foraging and diel vertical migration in a life history model. Poster session presented at ASLO 2013 Aquatic Sciences Meeting, New Orleans, United States.
Sainmont, Julie ; Andersen, Ken Haste ; Visser, Andre. / Optimal foraging and diel vertical migration in a life history model. Poster session presented at ASLO 2013 Aquatic Sciences Meeting, New Orleans, United States.
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title = "Optimal foraging and diel vertical migration in a life history model",
abstract = "Zooplankton such as copepods are known to perform diel vertical migration, avoiding the food rich surface during bright hours to avoid visual predator when they are most dangerous, and returning to the surface to feed at night. The resolution of this foraging behaviour requires fine time scale in the model, unsuited for life history modeling. We propose a method based on optimal foraging theory to take into account the emergent feeding rates as a function of the copepod metabolic cost, latitude, time and predation. We predict that copepods will balance their growth rate and mortality, playing a safe strategy when food is plentiful, but taking greater risks at low food concentrations. We apply these concepts to high latitude ecosystems where there is a strong seasonal variation in both food availability and day length. Specifically, during the summer, the midnight sun will force the animals to take more risk and maintain some feeding at the surface to cover their nutritional needs, compensate for predation mortality and sustain their growth",
author = "Julie Sainmont and Andersen, {Ken Haste} and Andre Visser",
year = "2013",
language = "English",
note = "ASLO 2013 Aquatic Sciences Meeting : Learning for the future ; Conference date: 17-02-2013 Through 22-02-2013",
url = "http://aslo.org/neworleans2013/",

}

Sainmont, J, Andersen, KH & Visser, A 2013, 'Optimal foraging and diel vertical migration in a life history model' ASLO 2013 Aquatic Sciences Meeting, New Orleans, United States, 17/02/2013 - 22/02/2013, .

Optimal foraging and diel vertical migration in a life history model. / Sainmont, Julie; Andersen, Ken Haste; Visser, Andre.

2013. Poster session presented at ASLO 2013 Aquatic Sciences Meeting, New Orleans, United States.

Research output: Contribution to conferencePosterResearch

TY - CONF

T1 - Optimal foraging and diel vertical migration in a life history model

AU - Sainmont, Julie

AU - Andersen, Ken Haste

AU - Visser, Andre

PY - 2013

Y1 - 2013

N2 - Zooplankton such as copepods are known to perform diel vertical migration, avoiding the food rich surface during bright hours to avoid visual predator when they are most dangerous, and returning to the surface to feed at night. The resolution of this foraging behaviour requires fine time scale in the model, unsuited for life history modeling. We propose a method based on optimal foraging theory to take into account the emergent feeding rates as a function of the copepod metabolic cost, latitude, time and predation. We predict that copepods will balance their growth rate and mortality, playing a safe strategy when food is plentiful, but taking greater risks at low food concentrations. We apply these concepts to high latitude ecosystems where there is a strong seasonal variation in both food availability and day length. Specifically, during the summer, the midnight sun will force the animals to take more risk and maintain some feeding at the surface to cover their nutritional needs, compensate for predation mortality and sustain their growth

AB - Zooplankton such as copepods are known to perform diel vertical migration, avoiding the food rich surface during bright hours to avoid visual predator when they are most dangerous, and returning to the surface to feed at night. The resolution of this foraging behaviour requires fine time scale in the model, unsuited for life history modeling. We propose a method based on optimal foraging theory to take into account the emergent feeding rates as a function of the copepod metabolic cost, latitude, time and predation. We predict that copepods will balance their growth rate and mortality, playing a safe strategy when food is plentiful, but taking greater risks at low food concentrations. We apply these concepts to high latitude ecosystems where there is a strong seasonal variation in both food availability and day length. Specifically, during the summer, the midnight sun will force the animals to take more risk and maintain some feeding at the surface to cover their nutritional needs, compensate for predation mortality and sustain their growth

M3 - Poster

ER -

Sainmont J, Andersen KH, Visser A. Optimal foraging and diel vertical migration in a life history model. 2013. Poster session presented at ASLO 2013 Aquatic Sciences Meeting, New Orleans, United States.