Diversidad de peces en hábitats estuarinos delta del río Atrato, golfo de Urabá

Sánchez, Luis Bryan Arango; Herrera, Tatiana Correa

doi:10.17151/bccm.2019.23.1.7

Bol. cient. mus. hist. nat. univ. caldas

2019

DOI: 10.17151/bccm.2019.23.1.7

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Diversidad de peces en hábitats estuarinos delta del río Atrato, golfo de Urabá

Luis Bryan Arango Sánchez¹,

Tatiana Correa Herrera

Abstract: Objetivo: Determinar las especies de peces en cuatro hábitats estuarinos (arracachal, eneal, manglar y áreas sin vegetación) en el delta del río Atrato. Metodología: Se colectaron peces entre noviembre de 2012 y julio de 2013 con redes de enmalle y atarraya. Resultados: Se capturaron 1262 individuos pertenecientes a 52 especies distribuidas en 27 familias y 11 órdenes; 3 especies fueron marinas rezagadas, 21 marinas migrantes, 7 estuarinas, 1 semianádroma, 4 migrantes de agua dulce y 16 rezagadas de agua dulce… Show more

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Cited by 4 publications

References 9 publications

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Trophic niches of estuarine fish and evidence of mangrove-fishery causal links in the Southern Caribbean (Colombia)

Sandoval,

Erős

2024

Hydrobiologia

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The trophic organization of estuarine fish communities is poorly known. We used Stable Isotopes (δ13C and δ15N) to classify the most abundant fishes of the Atrato River Delta (Colombia) into trophic guilds. We examined trophic niches and the relationships between the abundance of the trophic guilds (catch per unit effort) and environmental variables. The zoobenthivores were the dominant trophic guild. The isotopic niche width, based on Bayesian estimate of the standard ellipse areas, was more significant for carnivores (25.3‰2) and planktivores (24.4‰2) than for omnivores (7.8‰2) and phytobenthivores (3.1‰2). The overlap combinations showed a medium probability of isotopic overlap (≈50%) between carnivores and planktivores and between carnivores and omnivores. Isotopic niche size and overlap suggested diversity in food sources and considerable niche segregation of the fish community. Mangrove area was the main factor explaining the abundance of omnivores and zoobenthivores, supporting that the causal links between mangrove habitat and local fishery production may be explained through the trophic contribution of mangroves and mangrove-related sources. The results underscore the importance of mangrove areas in the trophic organization of fish communities and can inform strategies aimed at managing the ecosystem impacts of fishing and protecting extensive mangrove areas in the southern Caribbean.

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Trophic niches of estuarine fish and evidence of mangrove-fishery causal links in the Southern Caribbean (Colombia)

Sandoval,

Erős

2024

Hydrobiologia

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Composición y estructura de la fauna íctica del tramo bajo del río Gaira, Sierra Nevada de Santa Marta (SNSM), Caribe colombiano

Cervantes

Blanco-Cervantes

2023

Actual. Biol.

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En las costas Pacífica y Caribe Colombiana desembocan ríos típicos de grandes masas continentales, y a su vez, pequeños arroyos de serranías costeras. En los grandes ríos la diversidad de especies es alta comparada con los arroyos costeros. En contraste, las cuencas de serranías presentan mayor abundancia de especies anfídromas que primarias. En esta investigación se analizó la composición de la fauna íctica del sector bajo del río Gaira de la vertiente Noroccidental de la Sierra Nevada de Santa Marta (SNSM). Los muestreos se realizaron en temporada de lluvias y de sequía con el objetivo de conocer la composición y determinar posibles correlaciones en la estructura, y entre los peces con el sustrato, para lo cual, se emplearon análisis de componentes principales (ACP), y análisis de correspondencia canónica (ACC), entre otros. Se recolectaron 967 individuos, distribuidos en 11 órdenes, 13 familias y 23 especies, de las cuales seis (26,8%) son consideradas netamente de agua dulce, 15 (65,21%) son especies estuarinas, y dos (8,69%) son marinas. El ACP diferenció dos biotopos, remansos y rápidos de corriente, y el ACC mostró que el pH es la variable ambiental de mayor importancia en la distribución de las especies. El cambio de estacionalidad originó variación en el flujo de caudal que afectó la abundancia e incidió en la estructura del hábitat. Esta alteración generó variaciones hidrológicas que se reflejaron en las comunidades de peces en la época seca por la interrupción del flujo de agua entre la parta alta, media y baja del río.

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Mangrove carbon sustains artisanal fish and other estuarine consumers in a major mangrove area of the southern Caribbean Sea

Londoño

Mancera-Pineda

Leal-Flórez

et al. 2022

Mar. Ecol. Prog. Ser.

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Estuaries are highly productive habitats that support fisheries production. However, the importance of mangrove carbon to estuarine consumers can differ considerably among systems. In this study, we used stable isotopes (δ13C, δ15N) to investigate the importance of mangrove carbon as an energy source to estuarine consumers in the Atrato River Delta, Colombia, an area where fringing mangroves dominate the coastline and where other productive coastal habitats that may otherwise support the food web are absent. Basal resources and consumers were collected from mangrove and nearshore habitats during the rainy season. Results revealed a food web with a maximum length of 4.6 trophic positions. Bayesian mixing models indicated that most consumers used a mixture of basal sources, which suggests intertwined energetic pathways. However, mixing models also indicated that some species relied more heavily on some basal sources than others and revealed trophic pathways (food chains). Mangrove carbon directly supported herbivorous crabs (Sesarmidae) and indirectly supported planktivorous fish (Engraulidae) and piscivorous fish. Mangrove carbon also contributed significantly to the diet of 2 of the most common fish species in the local artisanal fishery: Centropomus undecimalis (mean: 46%; credibility interval [CI]: 1-80%) and C. pectinatus (mean: 33%; CI: 1-78%). Our findings highlight that mangrove carbon can be an important food source in areas without other productive coastal habitats and can play an important role in sustaining the production of fisheries.

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Diversidad de peces en hábitats estuarinos delta del río Atrato, golfo de Urabá

Cited by 4 publications

References 9 publications

Trophic niches of estuarine fish and evidence of mangrove-fishery causal links in the Southern Caribbean (Colombia)

Trophic niches of estuarine fish and evidence of mangrove-fishery causal links in the Southern Caribbean (Colombia)

Composición y estructura de la fauna íctica del tramo bajo del río Gaira, Sierra Nevada de Santa Marta (SNSM), Caribe colombiano

Mangrove carbon sustains artisanal fish and other estuarine consumers in a major mangrove area of the southern Caribbean Sea

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