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Ecological Modelling

International Journal on Ecological Modelling and Systems Ecology
ScienceDirect Publication: Ecological Modelling
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Spatial heterogeneity promotes antagonistic evolutionary scenarios in microbial community explained by ecological stratification: a simulation study
Publication date: 1 May 2019Source: Ecological Modelling, Volume 399Author(s): Alexandra I. Klimenko, Yury G. Matushkin, Nikolay A. Kolchanov, Sergey A. LashinAbstractThere are two evolutionary trends in genome organization among microbes: towards either amplification or reduction. Which evolutionary scenario overcomes depends on environmental conditions and the complexity of gene networks determining phenotypic traits such as metabolic features of cells. In this simulation study, we have shown that the habitats characterized by nutrient gradients allow spatial subdivision of evolutionary...
Simulation of extreme storm effects on regional forest soil carbon stock
Publication date: 1 May 2019Source: Ecological Modelling, Volume 399Author(s): Rasoul Yousefpour, Bin You, Marc HanewinkelAbstractThis study aims to project changes in soil carbon stocks under different frequencies of storm and climate change scenarios. We calibrated and validated the dynamic process-based soil carbon model “Yasso07” for a wind-throw prone forest area of 1.4 M ha in the State of Baden Württemberg in central Europe, Germany. We fitted climate-biomass models using retrospective climate data and biomass measurements from three consecutive national forest inventories...
Integrated modelling of the life cycle and aeroecology of wind-borne pests in temporally-variable spatially-heterogeneous environment
Publication date: 1 May 2019Source: Ecological Modelling, Volume 399Author(s): Hsiao-Hsuan Wang, William E. Grant, Norman C. Elliott, Michael J. Brewer, Tomasz E. Koralewski, John K. Westbrook, Tavvs M. Alves, Gregory A. SwordAbstractIntegrating population ecology and aeroecology is important for understanding dispersal dynamics of pest insects that depend on aerial habitats. Sugarcane aphid (Melanaphis sacchari) is an economic pest of sorghum in Asia, Africa, Australia, and South America and recently invaded North America, affecting over 90% of the continent’s sorghum production...
A synthetic ecosystem for the multi-level modelling of heterotroph-phototroph metabolic interactions
Publication date: 1 May 2019Source: Ecological Modelling, Volume 399Author(s): Marco Fondi, Francesca Di PattiAbstractMarine ecosystems are characterized by an intricate set of interactions. One of the most important occurs through the exchange of dissolved organic matter (DOM) provided by phototrophs and used by heterotrophic bacteria as their main carbon and energy source. This metabolic interaction represents the foundation of the entire ocean food-web.Here we have assembled a synthetic ecosystem to assist the systems-level investigation of this biological association. This was achieved...
Metagenome level metabolic network reconstruction analysis reveals the microbiome in the Bogotá River is functionally close to the microbiome in produced water
Publication date: 1 May 2019Source: Ecological Modelling, Volume 399Author(s): Héctor Alejandro Ruiz-Moreno, Ana María López-Tamayo, Alejandro Caro-Quintero, Johana Husserl, Andrés Fernando González BarriosAbstractThe microbiomes of contaminated water bodies have altered microbial communities and functional capacity. Metagenomic data provides information on the microbiome at taxonomic and functional level. However, metagenomes from different environmental samples have shown that differences in taxonomy don’t always reflect changes in metabolic functions. Here, curated metagenome...
Establishing archipelagic landscape ecological network with full connectivity at dual spatial scales
Publication date: 1 May 2019Source: Ecological Modelling, Volume 399Author(s): Yuan Chi, Zuolun Xie, Jing WangAbstractAn archipelagic landscape ecological network (ALEN) is important for optimizing the bird migration route and providing reference for island biodiversity maintenance. The ALEN with full connectivity at dual spatial scales was established in this study. Ecological nodes and routes at archipelago scale, as well as ecological sources and corridors at island scale, were identified to constitute the ALEN based on the habitat suitability and integrating the approaches of Euclidean...
Spatio-temporal population control applied to management of aquatic plants
Publication date: 24 April 2019Source: Ecological Modelling, Volume 398Author(s): Daiane Frighetto Frighetto, Gustavo Maia Souza, Alexandre MolterAbstractReaction-diffusion models can be used to describe temporal and spatial dynamics of populations. When the interests is the relationship of a given species with the environment in which it is inserted, we can model this phenomenon through the equation of Fisher–Kolmogorov that, in a mathematical sense, consider the existence of a source term, that represents both the reproduction and the growth rate of a population up to the medium's...
Determination of sensitive variables regardless of hydrological alteration in artificial neural network model of chlorophyll a: Case study of Nakdong River
Publication date: 24 April 2019Source: Ecological Modelling, Volume 398Author(s): Hyo Gyeom Kim, Sungwon Hong, Kwang-Seuk Jeong, Dong-Kyun Kim, Gea-Jae JooAbstractThe Nakdong River has suffered from hydrological alterations in the river channel and riverine area during the Four Major Rivers Restoration Project (FMRRP). As these anthropogenic modifications have induced intensive algal blooms, the prediction of algal abundances has become an important issue for securing a source of drinking water and ecosystem stability. This study aimed to assess the changed river system in terms of...
Modelling population dynamics in mesocosms using an individual-based model coupled to a bioenergetics model
Publication date: 24 April 2019Source: Ecological Modelling, Volume 398Author(s): Viviane David, Sandrine Joachim, Cleo Tebby, Jean-Marc Porcher, Rémy BeaudouinAbstractDeveloping population models is of great interest as these models enable to extrapolate toxicity observed at the molecular or individual levels to the population level, and thus improve environmental risk assessment of chemical substances. For this purpose, accounting for natural variations of environmental conditions and prey dynamics along with the chemical stress is needed. In this study, an individual-based model (IBM...
A data-driven modeling approach for simulating algal blooms in the tidal freshwater of James River in response to riverine nutrient loading
Publication date: 24 April 2019Source: Ecological Modelling, Volume 398Author(s): Jian Shen, Qubin Qin, Ya Wang, Mac SissonAbstractAlgal blooms often occur in the tidal freshwater (TF) of the James River estuary, a tributary of the Chesapeake Bay. The timing of algal blooms correlates highly to a summer low-flow period when residence time is long and nutrients are available. Because of complex interactions between physical transport and algal dynamics, it is challenging to predict interannual variations of bloom correctly using a complex eutrophication model without having a...
Transient dynamics: Equilibrium, collapse, and extinction in age-structured models. The case of the Northern cod stock
Publication date: 24 April 2019Source: Ecological Modelling, Volume 398Author(s): José M. Maroto, Manuel MoránAbstractEquilibrium-based methods are widely used in the literature on population ecology to analyze the sustainability of the management strategy. This approach fails to account for many factors such as age-specific natural mortality rates, the cohort survival rates, the possibility of extinction, the characterization of the equilibriums, their stability properties, and transient dynamics. We propose here a method, based on the theory of non-linear dynamic systems, that...
Three-dimensional numerical modeling of the cyanobacterium Microcystis transport and its population dynamics in a large freshwater reservoir
Publication date: 24 April 2019Source: Ecological Modelling, Volume 398Author(s): Haidong Liu, Zhongquan C. Zheng, Bryan Young, Ted D. HarrisAbstractCyanobacterial blooms pose severe ecological and economical threats in lakes and reservoirs. Understanding the complex physical transport and biological features of cyanobacteria (also known as blue-green algae) is important for predicting blooms in freshwater systems. In this study, a three-dimensional model for nonhydrostatic free surface flow and Microcystis sp. (cyanobacteria) transport and associated population dynamics is presented. The...
Building bridges between global information systems on marine organisms and ecosystem models
Publication date: 24 April 2019Source: Ecological Modelling, Volume 398Author(s): Arnaud Grüss, Maria L.D. Palomares, Jorrit H. Poelen, Josephine R. Barile, Casey D. Aldemita, Shelumiel R. Ortiz, Nicolas Barrier, Yunne-Jai Shin, James Simons, Daniel PaulyAbstractTo facilitate the wider implementation of ecosystem modeling platforms and, thereby, to help advance ecosystem-based fisheries management (EBFM) worldwide, tools delivering a large quantity of inputs to ecosystem models are needed. We developed a web application providing OSMOSE ecosystem models with values for trophic, growth and...
Editorial Board
Publication date: 24 April 2019Source: Ecological Modelling, Volume 398Author(s):
Coupling general physical environmental process models with specific question-driven ecological simulation models
Publication date: Available online 6 March 2019Source: Ecological ModellingAuthor(s): Tomasz E. Koralewski, John K. Westbrook, William E. Grant, Hsiao-Hsuan WangAbstractThe mechanistic basis for problem-specific, question-driven ecological simulation models often includes general physical phenomena. Although linking general physical environmental process models with custom-written spatially-explicit ecological models appears conceptually straightforward, practical implementation of such structures is often problematic for ecological modellers and may require specific software engineering...
A study on a river health assessment method based on ecological flow
Publication date: Available online 14 February 2019Source: Ecological ModellingAuthor(s): Diaoyuan Ma, Wenguang Luo, Guolu Yang, Jing Lu, Yangzhen FanAbstractIn order to facilitate watershed management, we developed an expansive river health assessment method based on ecological flow hydrology method in this study that estimates the ecological flow of a river by using a probability density curve combined with six levels of river flow in different states of a river ecosystem. We apply the above method to a river health assessment in the middle reaches of the Yangtze River. The results show...
Bilberry vs. cowberry in a Scots pine boreal forest: Exclusion or coexistence in a post-fire succession?
Publication date: Available online 2 February 2019Source: Ecological ModellingAuthor(s): Dmitrii O. Logofet, Alexander A. MaslovAbstractAlthough the famous competition exclusion principle was thoroughly elaborated in the framework of multispecies population models, its illustrations with field data were facing certain obstacles. The data we deal with were collected by 6 consecutive examinations of bilberry (Vaccinium myrtillus) and cowberry (V. vitis-idaea) presence/absence in 20 × 20 cm quadrats located along permanent transects in a Scots pine boreal forest. These data feature a...