Trophic relationships in an estuarine environment: A quantitative fatty acid analysis signature approach

Magnone, Larisa; Bessonart, Martín; Gadea, Juan; Salhi, M.

doi:10.1016/j.ecss.2014.12.033

Cited by 16 publications

(20 citation statements)

References 58 publications

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“…In general, results reflect that the Paquera-Tambor MARF is an important ecological area, since the presence of different microalgae groups and zooplankton organisms (tintinnids) are the basis of the food chain in the area (Magnone et al 2015;Feng et al 2015;Rakshit et al 2016), and, therefore, favor the following levels of the food chain. In addition, given that this is an important area for aquaculture and fishery production, this study is of vital importance to ensure an ecosystem assessment that allows for the recognition of guidelines for a comprehensive management of the marine area for responsible fishing.…”

Section: Discussionmentioning

confidence: 53%

“…On the other hand, several authors have determined that the dominant numbers of diatoms species is strongly related to increased concentrations of nutrients (Ishizaka et al 1986;Day et al 2012), which could be associated to the characteristics of the Gulf of Nicoya, where the dynamics of the estuary with constant inputs of freshwater, mangrove ecosystems near shore and the processes of mixing waters (Brenes & León, 1995) favor a constant flow of nutrients (Magnone et al 2015;Sin et al 2015).…”

Section: Discussionmentioning

confidence: 99%

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Cambios estacionales del fitoplancton en el área marina de pesca responsable de Paquera-Tambor, Golfo de Nicoya, Costa Rica

García-Rojas¹,

Bolaños²

2016

Rev. Mar. Cost.

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La implementación de Áreas Marinas de Pesca Responsable (AMPR) es una herramienta para el ordenamiento pesquero, por ello, los estudios de línea base juegan un rol importante para comprender la dinámica ecológica desde las bases de la red trófica en las AMPR. El objetivo de este trabajo fue caracterizar la abundancia de los grupos taxonómicos del fitoplancton en el AMPR-Paquera-Tambor, para la determinación de cambios estacionales entre variables abióticas y el fitoplancton. Se realizó un muestreo mensual (de septiembre-2013 a agosto-2014) para la toma de muestras de factores fisicoquímicos, así como de microalgas planctónicas. Los datos evidenciaron una variación temporal tanto de los factores ambientales como del fitoplancton. Las microalgas más representativas fueron las diatomeas y los dinoflagelados con una riqueza de 51 y 32 especies, respectivamente, donde se resalta la presencia de algunas especies productoras de florecimientos algales como Cochlodinium catenatum con una concentración de 5.85x104cél L-1. Con respecto a las diatomeas y los parámetros, como la profundidad del disco Secchi (r = -0.558) y el porcentaje de saturación de oxígeno (r = -0.490), se reflejó una correlación negativa debido a la variabilidad climática de la zona. Se identificaron organismos del grupo zooplanctónico de los tintínidos, los cuales presentaron una correlación positiva con las diatomeas (r = 0.433). Se evidenció una dinámica ecosistémica fundamental para el desarrollo trófico del AMPR-Paquera-Tambor, que fundamenta la importancia pesquera de la zona y refleja la relevancia de continuar con un monitoreo biótico y abiótico para la zona.

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Section: Discussionmentioning

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Cambios estacionales del fitoplancton en el área marina de pesca responsable de Paquera-Tambor, Golfo de Nicoya, Costa Rica

García-Rojas¹,

Bolaños²

2016

Rev. Mar. Cost.

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show abstract

“…QFASA can be used for individuals as well as food webs. Figure 1 is revised from Magnone et al [14], who applied QFASA to generate a food web model in the aquatic environment to find out the trophic relationships among the species. The arrows point from all predators to their prey and the percentage represents the proportion of prey in the diet of predator.…”

Section: Fundamental Requirements Of Qfasamentioning

confidence: 99%

Review of Estimating Trophic Relationships by Quantitative Fatty Acid Signature Analysis

Zhang

Ren

Zhang³

et al. 2020

JMSE

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The dynamic predator–prey relations in the food web are vital for understanding the function and structure of ecosystems. Dietary estimation is a research hotspot of quantitative ecology, providing key insights into predator–prey relationships. One of the most promising approaches is quantitative fatty acid signature analysis (QFASA), which is the first generation of statistical tools to estimate the quantitative trophic predator–prey relationships by comparing the fatty acid (FA) signatures among predators and their prey. QFASA has been continuously widely applied, refined and extended since its introduction. This article reviewed the research progress of QFASA from development and application. QFASA reflects the long-term diet of predator, and provides the quantitative dietary composition of predator, but it is sensitive to the metabolism of predator. The calibration coefficients (CCs) and the FA subset are two crucial parameters to explain the metabolism of predators, but the incorrect construction or improper use of CCs and the FA subset may cause bias in dietary estimation. Further study and refinement of the QFASA approach is needed to identify recommendations for which CCs and subsets of FA work best for different taxa and systems.

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“…Fatty acids are chemically varied, are often incorporated unaltered into higher-order consumers, and different organisms can have distinct profiles (Arts et al 2009). Fatty acids may therefore act as both dietary tracers in the food web and indicators of overall food quality (Iverson et al 2004;Ravinet et al 2010;Gonçalves et al 2012;Magnone et al 2015;Guo et al 2017;Kohlbach et al 2017).…”

Section: Introductionmentioning

confidence: 99%

The use of fatty acids to identify food sources of secondary consumers in wetland mesocosms

Growns

Ryder

McInerney

et al. 2020

Journal of Freshwater Ecology

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Trophic relationships in an estuarine environment: A quantitative fatty acid analysis signature approach

Cited by 16 publications

References 58 publications

Cambios estacionales del fitoplancton en el área marina de pesca responsable de Paquera-Tambor, Golfo de Nicoya, Costa Rica

Cambios estacionales del fitoplancton en el área marina de pesca responsable de Paquera-Tambor, Golfo de Nicoya, Costa Rica

Review of Estimating Trophic Relationships by Quantitative Fatty Acid Signature Analysis

The use of fatty acids to identify food sources of secondary consumers in wetland mesocosms

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