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Article

Primary Sources and Food Web Structure of a Tropical Wetland with High Density of Mangrove Forest

1
CONACYT-Centro de Investigaciones Biológicas del Noroeste, Calle IPN # 195, La Paz 23096, Mexico
2
Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Joel Montes Camarena s/n, Mazatlán, Sinaloa 82040, Mexico
3
Marine Biology Research Group, Ghent University, International MSc in Marine Biodiversity and Conservation, Krijgslaan 281/S8, 9000 Ghent, Belgium
*
Author to whom correspondence should be addressed.
Water 2020, 12(11), 3105; https://doi.org/10.3390/w12113105
Received: 12 September 2020 / Revised: 4 October 2020 / Accepted: 7 October 2020 / Published: 5 November 2020
The trophic ecology of wetlands with mangrove forests remains poorly understood. Through the use of stomach contents analysis, stable isotope signatures, and Bayesian mixing models, the food web of a tropical wetland in the gulf of California was investigated. Consumers had heterogeneous diets, omnivores were the most abundant species (47%), followed by planktivorous (21%), minor piscivores (10%), major piscivores (10%), macrobenthivores (9%), and herbivores (3%). The values of δ13C (from −12 to −29‰) and δ15N (from 4 to 24‰) showed a wide range of isotopic values of the consumers. Most of the species had a broad isotopic niche and there was a large diet overlap of species due to the exploitation of a common set of food resources. Five trophic levels were identified, with the weakfish (Cynoscion xanthulus) as the top predator of this system with detritus coming from the mangrove as the main source that supports the food chain. This highlights the importance of the mangrove forests to such ecosystems, because not only they are the most important primary food source, but also, they offer habitat to a large suite of fauna, which are important components of the trophic chain. View Full-Text
Keywords: trophic level; stable isotopes; mangrove ecosystem trophic level; stable isotopes; mangrove ecosystem
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MDPI and ACS Style

Muro-Torres, V.M.; Amezcua, F.; Soto-Jiménez, M.; Balart, E.F.; Serviere-Zaragoza, E.; Green, L.; Rajnohova, J. Primary Sources and Food Web Structure of a Tropical Wetland with High Density of Mangrove Forest. Water 2020, 12, 3105. https://doi.org/10.3390/w12113105

AMA Style

Muro-Torres VM, Amezcua F, Soto-Jiménez M, Balart EF, Serviere-Zaragoza E, Green L, Rajnohova J. Primary Sources and Food Web Structure of a Tropical Wetland with High Density of Mangrove Forest. Water. 2020; 12(11):3105. https://doi.org/10.3390/w12113105

Chicago/Turabian Style

Muro-Torres, Victor M.; Amezcua, Felipe; Soto-Jiménez, Martin; Balart, Eduardo F.; Serviere-Zaragoza, Elisa; Green, Lucinda; Rajnohova, Jana. 2020. "Primary Sources and Food Web Structure of a Tropical Wetland with High Density of Mangrove Forest" Water 12, no. 11: 3105. https://doi.org/10.3390/w12113105

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