scholarly journals Predicting ecosystem state changes in shallow lakes using an aquatic ecosystem model: Lake Hinge, Denmark, an example

2020 ◽  
Vol 30 (7) ◽  
Author(s):  
Tobias Kuhlmann Andersen ◽  
Anders Nielsen ◽  
Erik Jeppesen ◽  
Fenjuan Hu ◽  
Karsten Bolding ◽  
...  
Keyword(s):  
Shallow Lakes ◽  
Aquatic Ecosystem ◽  
Ecosystem Model ◽  
State Changes ◽  
Ecosystem State

scholarly journals Variance and Rate-of-Change as Early Warning Signals for a Critical Transition in an Aquatic Ecosystem State: A Test Case From Tasmania, Australia

2018 ◽  
Vol 123 (2) ◽  
pp. 495-508 ◽  
Author(s):  
Kristen K. Beck ◽  
Michael-Shawn Fletcher ◽  
Patricia S. Gadd ◽  
Henk Heijnis ◽  
Krystyna M. Saunders ◽  
...  
Keyword(s):  
Early Warning ◽  
Aquatic Ecosystem ◽  
Rate Of Change ◽  
Test Case ◽  
Critical Transition ◽  
Warning Signals ◽  
Early Warning Signals ◽  
Ecosystem State

scholarly journals Exploring How Cyanobacterial Traits Affect Nutrient Loading Thresholds in Shallow Lakes: A Modelling Approach

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2467 ◽  
Author(s):  
Manqi Chang ◽  
Sven Teurlincx ◽  
Jan Janse ◽  
Hans Paerl ◽  
Wolf Mooij ◽  
...  
Keyword(s):  
Water Quality ◽  
Nitrogen Fixation ◽  
Shallow Lakes ◽  
Lake Restoration ◽  
Nutrient Loading ◽  
Ecosystem Model ◽  
Water Bodies ◽  
Cyanobacterial Blooms ◽  
Eutrophic Water ◽  
Modelling Approach

Globally, many shallow lakes have shifted from a clear macrophyte-dominated state to a turbid phytoplankton-dominated state due to eutrophication. Such shifts are often accompanied by toxic cyanobacterial blooms, with specialized traits including buoyancy regulation and nitrogen fixation. Previous work has focused on how these traits contribute to cyanobacterial competitiveness. Yet, little is known on how these traits affect the value of nutrient loading thresholds of shallow lakes. These thresholds are defined as the nutrient loading at which lakes shift water quality state. Here, we used a modelling approach to estimate the effects of traits on nutrient loading thresholds. We incorporated cyanobacterial traits in the process-based ecosystem model PCLake+, known for its ability to determine nutrient loading thresholds. Four scenarios were simulated, including cyanobacteria without traits, with buoyancy regulation, with nitrogen fixation, and with both traits. Nutrient loading thresholds were obtained under N-limited, P-limited, and colimited conditions. Results show that cyanobacterial traits can impede lake restoration actions aimed at removing cyanobacterial blooms via nutrient loading reduction. However, these traits hardly affect the nutrient loading thresholds for clear lakes experiencing eutrophication. Our results provide references for nutrient loading thresholds and draw attention to cyanobacterial traits during the remediation of eutrophic water bodies.

The Mathematical Structure of an Aquatic Ecosystem Model

SIMULATION ◽  
1981 ◽  
Vol 37 (4) ◽  
pp. 133-137 ◽  
Author(s):  
Pascal P. de Caprariis
Keyword(s):  
Aquatic Ecosystem ◽  
Mathematical Structure ◽  
Ecosystem Model

Optimization of exergy and implications of body sizes of phytoplankton and zooplankton in an aquatic ecosystem model

2001 ◽  
Vol 140 (3) ◽  
pp. 219-234 ◽  
Author(s):  
Santanu Ray ◽  
Ludĕk Berec ◽  
Milan Straškraba ◽  
Sven Erik Jørgensen
Keyword(s):  
Aquatic Ecosystem ◽  
Ecosystem Model ◽  
Body Sizes

Distribution and bioavailability of ceria nanoparticles in an aquatic ecosystem model

Chemosphere ◽  
2012 ◽  
Vol 89 (5) ◽  
pp. 530-535 ◽  
Author(s):  
Peng Zhang ◽  
Xiao He ◽  
Yuhui Ma ◽  
Kai Lu ◽  
Yuliang Zhao ◽  
...  
Keyword(s):  
Aquatic Ecosystem ◽  
Ecosystem Model ◽  
Ceria Nanoparticles
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