Trophic mass-balance model of a subtropical coastal lagoon, including a comparison with a stable isotope analysis of the food-web.

  title={Trophic mass-balance model of a subtropical coastal lagoon, including a comparison with a stable isotope analysis of the food-web.},
  author={A. C. Milessi and Calliari Danilo and Rodr{\'i}guez-Gra{\~n}a Laura and C. Daniel and Sellanes Javier and L. Rodr{\'i}guez-Gallego},
  journal={Ecological Modelling},
Stable isotopes and mass-balance trophic models (e.g., ECOPATH) are well-known and widely used approximations to describe food-web structure, but their consistency is not properly established. Here we analyze the food-web structure of a subtropical-temperate coastal lagoon using two approaches: stable isotopic techniques and mass-balance modelling, exploring also the correspondence between the outputs of both methods. We compared trophic positions (TPs) derived by these two approaches for 14… Expand
Comparing trophic structure of a subtropical bay as estimated from mass-balance food web model and stable isotope analysis
The trophic structure of a subtropical bay in Taiwan Strait was analyzed by using two methods: mass balance modeling (Ecopath) and stable isotopic analysis (SIA). Trophic levels (TLs) of mainExpand
An assessment of the trophic structure of the Bay of Biscay continental shelf food web: Comparing estimates derived from an ecosystem model and isotopic data
Comparing outputs of ecosystem models with estimates derived from experimental and observational approaches is important in creating valuable feedback for model construction, analyses and validation.Expand
Comparing trophic levels estimated from a tropical marine food web using an ecosystem model and stable isotopes
Abstract Comparing the outputs of food web models with those from other independent approaches is necessary to build confidence in the use of these models to help manage fisheries. Mass-balanceExpand
Stable Isotope Discrimination by Consumers in a Tropical Mangrove Food Web: How Important Are Variations in C/N Ratio?
The results showed that the relative amount of the heavy isotope significantly increased with TL, and the importance of considering TL and C/N ratios in stable isotope analyses of food webs was demonstrated. Expand
Using stable isotope analysis to validate effective trophic levels from Ecopath models of areas closed and open to shrimp trawling in Core Sound, NC, USA
Stable isotope ratios of nitrogen ( 15 N/ 14 N) were used as a validation tool for determining the accuracy of the effective trophic levels computed in network analysis models for Core Sound, North Carolina, USA and it was concluded that this Ecopath network model of Core Sound is reliable and predicts with good accuracy the shifts and changes in Trophic level and diet. Expand
Coupling isotopic analysis and Ecopath model to detect the ecosystem features based on functional groups of the southwestern Yellow Sea, China
  • Wei Wang, P. Zuo, Junjie Wang
  • Medicine
  • Environmental Science and Pollution Research
  • 2021
The paper evaluates the species richness, material transfer, energy flow, and system function of the southwestern Yellow Sea Ecosystem (SYSE) indicating intensive human intervention affecting thisExpand
Trophic relationships in an estuarine environment: A quantitative fatty acid analysis signature approach
QFASA is a model in tracing and quantitative estimate trophic pathways among species in an estuarine food web, which is a valuable contribution in the understanding of Trophic relationships in Rocha Lagoon. Expand
Isotopic analyses, a good tool to validate models in the context of Marine Renewable Energy development and cumulative impacts
Abstract As part of the energy transition, the French government is planning Offshore Wind Farm (OWF) constructions in the next decades. An integrated ecosystem approach of two future OWF sites ofExpand
Quantitative food web structure and ecosystem functions in a warm-temperate seagrass bed
Seagrass beds are important habitats in coastal areas but increasingly decline in area and quality, thus conservation measures are urgently needed. Quantitative food webs, describing the biomassExpand
Modelling trophic flows in ecosystems to assess the efficiency of marine protected area (MPA), a case study on the coast of Sénégal
Marine protected areas (MPAs) are now viewed as an efficient tool to fight against the global deterioration of habitats and fish populations. However their efficiency and effects on the whole trophicExpand


Trophic studies in a high-latitude fjord ecosystem — a comparison of stable isotope analyses (δ13C and δ15N) and trophic-level estimates from a mass-balance model
Stable isotopes of δ13C and δ15N were used to examine food sources and trophic structure of 65 taxa, representing 19 ecological groups, in a high-latitude ecosystem, finding good correlation between the two methods and supports the diet composition and the grouping of taxa into ecological groups in the model. Expand
Food web of a SW Atlantic shallow coastal lagoon: spatial environmental variability does not impose substantial changes in the trophic structure
Overall results indicated that, despite environmental differences between sites, the structure of the biological assemblages and general trophic patterns were similar at both sites. Expand
Cross-Validation of Trophic Level Estimates from a Mass-Balance Model of Prince William Sound Using 15N/14N Data
Trophic mass-balance models of ecosystems constructed using the Ecopath approach and software include the diet composition of functional groups as model inputs, and trophic level estimates for theseExpand
The stable isotopes of nitrogen (8'5N) and carbon (8'3C) provide powerful tools for estimating the trophic positions of and carbon flow to consumers in food webs; however, the isotopic signature of aExpand
Trophic structure and flows of energy in the Huizache–Caimanero lagoon complex on the Pacific coast of Mexico
Abstract The Huizache–Caimanero coastal lagoon complex on the Pacific coast of Mexico supports an important shrimp fishery and is one of the most productive systems in catch per unit area of thisExpand
A Trophic Flow Model of the Caeté Mangrove Estuary (North Brazil) with Considerations for the Sustainable Use of its Resources
A trophic steady state model of the Caete Estuary found that energy flow through the fish and shrimp compartments is of relatively low importance for the energy cycling within the system, a finding which is contrary to the situation in other mangrove estuaries reported in the literature. Expand
A Trophic Model of a Sandy Barrier Lagoon at Chiku in Southwestern Taiwan
Abstract Using the ECOPATH 3.0 software system, a balanced trophic model of a sandy barrier lagoon with intensive fishery activities at Chiku in tropical Taiwan was constructed. The lagoon modelExpand
Food-web dynamics in the South Catalan Sea ecosystem (NW Mediterranean) for 1978-2003
An ecosystem model representing the continental shelf and upper slope of the South Catalan Sea (NW Mediterranean) is calibrated and fitted to the available time series data from 1978 to 2003. We useExpand
Variation in δ15N and δ13C trophic fractionation: Implications for aquatic food web studies
A broad-scale analysis of stable isotope techniques to quantify food web relationships requires a priori estimates of the enrichment or depletion in δ15N and δ13C values between prey and predator, known as trophic fractionation, including three new field estimates from aquatic systems. Expand
Influence of hydrology on phytoplankton species composition and life strategies in a subtropical coastal lagoon periodically connected with the Atlantic Ocean
A survey was carried out to investigate the relationship of phytoplankton biovolume, structure, and species life strategies with major abiotic factors in a subtropical choked coastal lagoon (34°33′S,Expand