Parameterisation of a zooplankton population model for Pseudocalanus elongatus using stage durations from laboratory experiments

Stegert, Christoph; Kreus, Markus; Carlotti, François; Moll, A.

doi:10.1016/j.ecolmodel.2007.04.012

Cited by 25 publications

(18 citation statements)

References 36 publications

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“…Stage-specific processes control the metabolism of a ''mean individual'' using the mean individual mass for each stage, defined as stage biomass divided by the number of individuals (Z i /N i ). Thus, simulated abundances and biomasses are connected as functions of time (Stegert et al 2007). Mean individual weight change through grazing (ingestion) and losses (egestion, respiration, excretion) of matter and molting depends on a critical molting weight.…”

Section: Methodsmentioning

confidence: 99%

“…For copepods that do not molt, ingestion will be inhibited due to limited body volume of the cuticle (Carlotti and Sciandra 1989;Stegert et al 2007). This is described by a parabolic function allowing individuals to feed at maximum rate until their mean weight (W i ) reaches the critical weight Xt i , and then decreases for higher weights down to zero at Xg i (Table 1) (Stegert et al 2007).…”

Section: Methodsmentioning

confidence: 99%

“…Model concept and parameterization-The model of development times of C. finmarchicus and C. helgolandicus were based on the model developed by Fennel (2001) for Pseudocalanus and later modified by Stegert et al (2007). The model considered five life stages, namely (1) eggs to nauplii 1-2 (egg-NI-II), (2) nauplii 3-6 (NIII-NVI), (3) copepodites 1-3 (CI-CIII), (4) copepodites 4-5 (CIV-CV), and (5) adults.…”

Section: Methodsmentioning

confidence: 99%

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The effect of changes in temperature and food on the development of Calanus finmarchicus and Calanus helgolandicus populations

Møller

Maar

Jónasdóttir

et al. 2012

Limnology & Oceanography

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We studied the response in development times of Calanus finmarchicus and Calanus helgolandicus to changes in temperature and food conditions. Grazing experiments were performed at different temperatures for both species, and the results were implemented in a stage-resolved zooplankton population model that predicted development times from biomass increments controlled by ingestion and metabolic losses. Predictions were validated against development data from the literature, and show that C. finmarchicus develops faster than C. helgolandicus below 11uC and slower above. The different relative development rates of the species are related to different temperature responses in ingestion rates. A temperature increase of 1uC to 2uC may have consequences for the relative contribution of C. helgolandicus and C. finmarchicus to the copepod community, and both seasonal and spatial displacements of the Calanus populations can be expected under climate change.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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The effect of changes in temperature and food on the development of Calanus finmarchicus and Calanus helgolandicus populations

Møller

Maar

Jónasdóttir

et al. 2012

Limnology & Oceanography

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“…Mortality rates of copepods control population abundance and biomass in the model, 183 but only slightly development rates (Stegert et al, 2007). Daily mortality rates were based on 184 an annual study of mortality of C. helgolandicus in the English Channel (Hirst et al, 2007) who 185 supply general relationships between mortality and temperature and female C. helgolandicus 186 abundance.…”

Section: Introduction 27mentioning

confidence: 99%

Sensitivity of Calanus spp. copepods to environmental changes in the North Sea using life-stage structured models

Maar

Møller

Gürkan

et al. 2013

Progress in Oceanography

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2The copepods Calanus finmarchicus and C. helgolandicus co-exist in the North Sea, 3 but their spatial distribution and phenology are very different. Long-term changes in their 4 distributions seem to occur due to climate change resulting in a northward extension of C. 5 helgolandicus and a decline of C. finmarchicus in this region. The aim of this study is to use life-6 stage structured models of the two Calanus species embedded in a 3D coupled hydrodynamic-7 biogeochemical model to investigate how the biogeography of C. finmarchicus and C. scenario suggest that in a warmer future, C. finmarchicus is likely to decline and C. 21 helgolandicus abundance will probably continue to increase in some areas. 22 23

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“…This type of study was carried out for Pseudocalanus spp. by Fennel (2001), Dzierzbicka-Glowacka (2004, 2005a, Stegert et al (2007), and Moll and Stegert (2007). A similar study for Acartia spp.…”

Section: Introductionmentioning

confidence: 84%

Population modelling of <i>Acartia</i> spp. in a water column ecosystem model for the South-Eastern Baltic Sea

et al. 2010

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Abstract. This paper describes numerical simulations of the seasonal dynamics of Acartia spp. in the South-Eastern Baltic Sea. The studies were carried out using a structured zooplankton population model adapted to Acartia spp. The population model with state variables for eggs, nauplii, five copepodites stages and adults was coupled with a marine ecosystem model. Four state variables for the carbon cycle represent the functional units of phytoplankton, pelagic detritus, benthic detritus, and bulk zooplankton, which represent all zooplankton other than the structured population. The annual cycle simulated for 2000 under realistic weather and hydrographic conditions was studied with the coupled ecosystem-zooplankton model applied to a water column in the Gdansk Gulf (South-Eastern Baltic Sea). The vertical profiles of selected state variables were compared to the physical forcing to study differences between bulk and structured zooplankton biomass. The simulated population dynamics of Acartia spp. and zooplankton as one biomass state variable were compared with observations in the Gdansk Gulf. Simulated generation times are more affected by temperature than food conditions except during the spring phytoplankton bloom. The numerical studies are a following step in understanding how the population dynamics of a dominant species in the South-Eastern Baltic Sea interact with the environment.

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Parameterisation of a zooplankton population model for Pseudocalanus elongatus using stage durations from laboratory experiments

Cited by 25 publications

References 36 publications

The effect of changes in temperature and food on the development of Calanus finmarchicus and Calanus helgolandicus populations

The effect of changes in temperature and food on the development of Calanus finmarchicus and Calanus helgolandicus populations

Sensitivity of Calanus spp. copepods to environmental changes in the North Sea using life-stage structured models

Population modelling of <i>Acartia</i> spp. in a water column ecosystem model for the South-Eastern Baltic Sea

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Parameterisation of a zooplankton population model for Pseudocalanus elongatus using stage durations from laboratory experiments

Cited by 25 publications

References 36 publications

The effect of changes in temperature and food on the development of Calanus finmarchicus and Calanus helgolandicus populations

The effect of changes in temperature and food on the development of Calanus finmarchicus and Calanus helgolandicus populations

Sensitivity of Calanus spp. copepods to environmental changes in the North Sea using life-stage structured models

Population modelling of &lt;i&gt;Acartia&lt;/i&gt; spp. in a water column ecosystem model for the South-Eastern Baltic Sea

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Population modelling of <i>Acartia</i> spp. in a water column ecosystem model for the South-Eastern Baltic Sea