Calibration of the NEMURO nutrient–phytoplankton–zooplankton food web model to a coastal ecosystem: Evaluation of an automated calibration approach

2007 ◽  
Vol 202 (1-2) ◽  
pp. 38-51 ◽  
Author(s):  
Kenneth A. Rose ◽  
Bernard A. Megrey ◽  
Francisco E. Werner ◽  
Dan M. Ware
Keyword(s):  
Food Web ◽  
Coastal Ecosystem ◽  
Automated Calibration ◽  
Calibration Approach ◽  
Food Web Model

An integrated food web model to test the impact of fisheries management scenarios on the coastal ecosystem of Vietnam

2014 ◽  
Vol 92 ◽  
pp. 74-86 ◽  
Author(s):  
Pham Viet Anh ◽  
Frederik De Laender ◽  
Gert Everaert ◽  
Chu Tien Vinh ◽  
Peter Goethals
Keyword(s):  
Food Web ◽  
Fisheries Management ◽  
Coastal Ecosystem ◽  
Management Scenarios ◽  
The Impact ◽  
Food Web Model

Functional diversity alters the effects of a pulse perturbation on the dynamics of tritrophic food webs

2021 ◽  
Author(s):  
Ruben Ceulemans ◽  
Laurie Anne Myriam Wojcik ◽  
Ursula Gaedke
Keyword(s):  
Food Web ◽  
Food Webs ◽  
Functional Diversity ◽  
Feedback Loop ◽  
Environmental Changes ◽  
Biodiversity Loss ◽  
Trophic Levels ◽  
Nutrient Pulse ◽  
Trade Offs ◽  
Food Web Model

Biodiversity decline causes a loss of functional diversity, which threatens ecosystems through a dangerous feedback loop: this loss may hamper ecosystems' ability to buffer environmental changes, leading to further biodiversity losses. In this context, the increasing frequency of climate and human-induced excessive loading of nutrients causes major problems in aquatic systems. Previous studies investigating how functional diversity influences the response of food webs to disturbances have mainly considered systems with at most two functionally diverse trophic levels. Here, we investigate the effects of a nutrient pulse on the resistance, resilience and elasticity of a tritrophic---and thus more realistic---plankton food web model depending on its functional diversity. We compare a non-adaptive food chain with no diversity to a highly diverse food web with three adaptive trophic levels. The species fitness differences are balanced through trade-offs between defense/growth rate for prey and selectivity/half-saturation constant for predators. We showed that the resistance, resilience and elasticity of tritrophic food webs decreased with larger perturbation sizes and depended on the state of the system when the perturbation occured. Importantly, we found that a more diverse food web was generally more resistant, resilient, and elastic. Particularly, functional diversity dampened the probability of a regime shift towards a non-desirable alternative state. In addition, despite the complex influence of the shape and type of the dynamical attractors, the basal-intermediate interaction determined the robustness against a nutrient pulse. This relationship was strongly influenced by the diversity present and the third trophic level. Overall, using a food web model of realistic complexity, this study confirms the destructive potential of the positive feedback loop between biodiversity loss and robustness, by uncovering mechanisms leading to a decrease in resistance, resilience and elasticity as functional diversity declines.

A mass-balanced food web model for a kelp forest ecosystem near its southern distributional limit in the northern hemisphere

Food Webs ◽  
2018 ◽  
Vol 17 ◽  
pp. e00091 ◽  
Author(s):  
Ainoa Vilalta-Navas ◽  
Rodrigo Beas-Luna ◽  
Luis E. Calderon-Aguilera ◽  
Lydia Ladah ◽  
Fiorenza Micheli ◽  
...  
Keyword(s):  
Food Web ◽  
Northern Hemisphere ◽  
Forest Ecosystem ◽  
Kelp Forest ◽  
Distributional Limit ◽  
Food Web Model

scholarly journals Stability and Bifurcation of a Prey-Predator-Scavenger Model in the Existence of Toxicant and Harvesting

2019 ◽  
Vol 2019 ◽  
pp. 1-17 ◽  
Author(s):  
Huda Abdul Satar ◽  
Raid Kamel Naji
Keyword(s):  
Numerical Simulation ◽  
Stability Analysis ◽  
Food Web ◽  
Equilibrium Points ◽  
Local Bifurcation ◽  
Persistence Conditions ◽  
Stability And Bifurcation ◽  
Periodic Dynamics ◽  
The Stability ◽  
Food Web Model

In this paper a prey-predator-scavenger food web model is proposed and studied. It is assumed that the model considered the effect of harvesting and all the species are infected by some toxicants released by some other species. The stability analysis of all possible equilibrium points is discussed. The persistence conditions of the system are established. The occurrence of local bifurcation around the equilibrium points is investigated. Numerical simulation is used and the obtained solution curves are drawn to illustrate the results of the model. Finally, the nonexistence of periodic dynamics is discussed analytically as well as numerically.

Combining efforts to make maximum sustainable yields and good environmental status match in a food-web model of the southern North Sea

2016 ◽  
Vol 331 ◽  
pp. 17-30 ◽  
Author(s):  
Moritz Stäbler ◽  
Alexander Kempf ◽  
Steven Mackinson ◽  
Jan Jaap Poos ◽  
Clement Garcia ◽  
...  
Keyword(s):  
Food Web ◽  
North Sea ◽  
Southern North Sea ◽  
Environmental Status ◽  
Good Environmental Status ◽  
Food Web Model

Application of an automatic approach to calibrate the NEMURO nutrient–phytoplankton–zooplankton food web model in the Oyashio region

2010 ◽  
Vol 87 (1-4) ◽  
pp. 186-200 ◽  
Author(s):  
Shin-ichi Ito ◽  
Naoki Yoshie ◽  
Takeshi Okunishi ◽  
Tsuneo Ono ◽  
Yuji Okazaki ◽  
...  
Keyword(s):  
Food Web ◽  
Oyashio Region ◽  
Food Web Model

scholarly journals Complex behaviour in four species food-web model

2012 ◽  
Vol 6 (2) ◽  
pp. 440-456 ◽  
Author(s):  
S. Gakkhar ◽  
A. Priyadarshi ◽  
Sandip Banerjee
Keyword(s):  
Food Web ◽  
Complex Behaviour ◽  
Food Web Model

Mathematical analysis of a food-web model

2001 ◽  
Vol 121 (2-3) ◽  
pp. 155-167 ◽  
Author(s):  
H.M. El-Owaidy ◽  
A.A. Ragab ◽  
M. Ismail
Keyword(s):  
Food Web ◽  
Mathematical Analysis ◽  
Food Web Model
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