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| Abad-Vílchez,Wilder Aurelio; Sánchez-Caycho,Katherine Lourdes; Ramos-Ramos,Daniel; Romero-Delgado,Gelver; Ramos-Alarcón,Leidy Milady; Loayza-Muro,Raúl Augusto. |
| SUMMARY Macroinvertebrates are bioindicators sensitive to seasonal changes and water quality. This study evaluated how its community responds to physicochemical and seasonal variations at five stations of the river: Catapalla, San Jerónimo, Socsi, Puente Clarita, and Boca del Río, during rainy and dry seasons. Parameters such as pH, dissolved oxygen, conductivity, total dissolved solids, temperature, as well as NO3 -, NH4 +, and phosphorus were measured. Macroinvertebrates were identified at the family level and indices of richness, dominance, density, and similarity were analyzed. Univariate and multivariate analyses, such as ANOVA and PCA, showed significant differences between stations and seasons, especially in Catapalla and Boca del Río. Two groups of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioindicators; Richness; Dominance; Density; Physicochemical parameters. |
| Ano: 2026 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612026000100010 |
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| Críales Hernández,María Isabel; Cabanzo Hernández,Rafael; Guerrero-Bermúdez,Jáder; Ruiz-Jiménez,Jenny Alejandra; Rodriguez Pinilla,Querubin. |
| ABSTRACT Microplastic pollution is a well-recognized global environmental issue, particularly in marine ecosystems. However, microplastic (MPs) pollution patterns in the Caribbean Sea and Marine Protected Areas (MPAs) are poorly studied. The aim of the study was to analyze the abundance, distribution, depth, seasonality, and potential sources of microplastics in the Rosario and San Bernardo Archipelago MPA, located in the Colombian Caribbean. Sampling was conducted at coastal and oceanic stations using Manta and Mini-bongo nets to collect microplastics in surface and subsurface waters during contrasting seasons in 2022. Results showed the highest abundances during the rainy season due to the influence of the Magdalena River in the area, while microplastics... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: ATR-FTIR; Caribbean Sea; National Natural Park; Polymer identification; Pollution monitoring. |
| Ano: 2026 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612026000100154 |
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| Romero-Berny,Emilio I.; Hernández-Cueva,María Elisa; Jiménez-González,José Juan; Toledo-González,Juan A.; Arreóla-Sánchez,Eliezer. |
| ABSTRACT We report the presence of the seagrass Halodule wrightii Asch. (Cymodoceaceae) in the Mar Muerto coastal lagoon, located in the southern Mexican Pacific. Seven localities were surveyed in the states of Oaxaca and Chiapas, including the first confirmed record for Oaxaca supported by herbarium specimens. These are the only known records with physical records and geographic coordinates within a coastal stretch of approximately 2,900 km, lacking previous confirmed reports, between northwestern Mexico and Central America. The meadows were located in shallow areas, with an average salinity of 33.06 and temperature of 31.4 °C. The area occupied by patches was estimated to be approximately 17.7 km². The average leaf height was 10.3 cm, and shoot density... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Distribution; Estuarine systems; Oaxaca and Chiapas; Seagrasses; Tropical Eastern Pacific. |
| Ano: 2026 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612026000100198 |
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| Subero-Pino,Sonia S.; Rojas de Astudillo,Luisa; García-Marcano,Edgar A.; Troccoli-Ghinaglia,Luis E.; Díaz-Ramos,José R.. |
| ABSTRACT Hydrochemical conditions of coastal water bodies are modified by natural and anthropogenic processes. In order to evaluate the spatiotemporal variation of hydrochemical conditions in the southeastern Caribbean, water samples were taken monthly during: June 2012 - July 2013 and then in January - October 2015; at seven stations in the area. Temperature, dissolved oxygen, nutrients, and chlorophyll a were measured. The highest average values of nitrogen nutrients were recorded for NH4 + and NO3 - (3.0 and 3.2 µmol L-1, respectively). Likewise, the average concentration of FRS was 0.27 µmol L-1 in 2012-13 and 0.97 µmol L-1 in 2015. Chlorophyll a was high in 2015 (3.1 mg m-3), with the highest records starting in June associated with the effect of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coastal upwelling; Southeastern Caribbean Sea; Nutrient dynamics; Anthropogenic influence; Trophic state index. |
| Ano: 2026 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612026000100037 |
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| Rodríguez,Pedro; Fariña,Ángel; Lira,Carlos; Vásquez,Ruth; Martínez,Eric. |
| ABSTRACT The genus Chaceon has the greatest species richness within the Geryonidae family, with 34 described species. Of these, C. eldorado is the only one recorded in Venezuelan waters, with a single valid report dating back more than three decades, coinciding with its original description. Based on a recent assessment of deep-water fishing areas off the central coast of Venezuela, new records of this species are presented. Furthermore, the description of the male pleopods is provided for the first time, and relevant ecological and biological aspects are discussed in anticipation of the potential initiation of its commercial fishing. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Portunoidea; Crustaceans; Crabs; Deep sea; Geryonids fisheries. |
| Ano: 2026 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612026000100211 |
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| Solís-Marín,Francisco Alonso; Fariña Pestano,Ángel Rafael; Vásquez Levi,Ruth Emilia; Martínez Gómez,Eric Ricardo. |
| ABSTRACT The genus Ophiocamax, originally described by Lyman, is characterized by the presence of spiny oral papillae and spine-shaped tentacular scales. Although 11 species of this genus are currently known, knowledge about their distribution and diversity is limited, especially in Venezuelan waters. This study represents the first report of Ophiocamax hystrix in Venezuela, contributing to the understanding of the biodiversity of brittle stars in the region. The objective is to document the presence of O. hystrix in Venezuelan waters, describe its morphological characteristics, and compare this species with other members of the same genus to enhance the knowledge of its distribution and taxonomy. A specimen of O. hystrix was collected at the fishing port... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Echinoderm; Deep fauna; Depth; La Guaira; Spiny papilla. |
| Ano: 2026 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612026000100227 |
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| Registros recuperados: 126.786 | |
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