https://www.revistas.una.ac.cr/index.php/revmar/issue/feed Journal of Marine and Coastal Sciences 2021-01-12T06:49:04-06:00 Nidya Nova-Bustos revmar@una.cr Open Journal Systems <div id="journalDescription"> <p><strong>WELCOME</strong><br><br><strong>REVISTA CIENCIAS MARINAS Y COSTERAS (<em>REVMAR</em>)</strong><br><br></p> <p>The purpose of this journal is to publish original papers related to marine science, including biology, geology and marine ecology, oceanography, evolution, systematics and taxonomy of marine organisms, pollution, fisheries, mariculture, marine biotechnology, conservation and integrated management of coastal and marine resources.</p> </div> https://www.revistas.una.ac.cr/index.php/revmar/article/view/14652 Areas susceptible to lionfish invasion in the Mexican Pacific 2020-10-28T11:48:39-06:00 Héctor Reyes-Bonilla hreyes@uabcs.mx David Petatán-Ramírez dpetatan@uabcs.mx <p>Lionfish <em>Pterois volitans/miles</em> has invaded the western Atlantic, but is absent in the eastern tropical Pacific, even though the oceanographic conditions seem to be adequate for its establishment. This paper proposes probable <em>Pterois</em> spp invasion areas on the western coast of Mexico, based on ecological niche and potential distribution models, as well as species occurrence data (1985-2018) and environmental layers (2002-2017). For the environmental database, rasters of temperature, salinity, chlorophyll <em>a</em> and velocity of sea currents were used at average, maximum, and minimum values at the surface level, as well as average temperature and salinity at the seabed level and the type of predominant coast. Results indicated that bottom salinity, type of coast, and average surface temperature contributed 65% to the distribution model. To learn the impact of the possible invasion of <em>Pterois</em> spp. on local biodiversity, a spatial intersection was made between the predicted area with potential for invasion with the geographic distribution of coastal fish and the fishing areas. According to the spatial analysis, the arrival of <em>Pterois</em> spp. could affect almost 200 species, several of which are endemic and of commercial importance. The impact could be even greater, considering that the species is a predator of invertebrates such as crayfish and shrimp, which are important fisheries in the region.</p> 2020-10-20T15:16:51-06:00 ##submission.copyrightStatement## https://www.revistas.una.ac.cr/index.php/revmar/article/view/14803 Spatio-temporal variation on the ecological structure of the fish community in the Ostión Lagoon, Veracruz, Mexico 2020-12-03T12:53:14-06:00 Arturo Aguirre-León agla1269@corre.xoc.uam.mx Silvia Díaz-Ruiz sdr@xanum.uam.mx Mariela Gazca-Castro mgc14bio@gmail.com <p>Although the fish community in the Ostión Lagoon is subject to fishing, ecological studies on it are scarce. The spatial and temporal variation of this community structure was analyzed, as well as the physicochemical parameters of the lagoon’s salinity, temperature, dissolved oxygen, depth, and transparency. Samples were collected bimonthly from March 2007 to January 2008 in eight sampling stations with a shrimp trawl. Significant spatial and temporal differences were evaluated in diversity, richness, evenness, density, biomass, and average weight through analysis of variance. A canonical correspondence analysis (CCA) was used to determine fish associations and their correlation with the environmental factors of the system. A total of 737 individuals were collected with a total weight of 19,081.90 g. The study identified 19 families, 23 genera, and 34 species, of which 12 were new records for the lagoon. Four species were found to be dominant in the system. Community parameters showed a relationship with environmental gradients and climatic seasons. Diversity was higher in May (H´= 2.36) and January (H´ = 2.48), while density was higher in July (0.018 ind./m<sup>2</sup>). The CCA showed that the composition and spatio-temporal distribution of the fish community was conditioned by salinity, temperature, dissolved oxygen, and depth. Knowing the fish’s community structure and biological functions and their interaction with environmental factors in this lagoon is relevant since ongoing studies have not been conducted for this system.</p> 2020-10-20T00:00:00-06:00 ##submission.copyrightStatement## https://www.revistas.una.ac.cr/index.php/revmar/article/view/14805 Trace metals (Fe, Mn, Zn, Cu) in the polychaete Americonuphis reesei (Class: Polychaeta), in El Salado Beach, Aguadulce, Panamá 2020-12-09T11:29:52-06:00 Diana Rodríguez dianaerodriguez28@hotmail.com Janzel R. Villalaz janzelvillalaz@yahoo.com Italo Goti italo.goti@up.ac.pa Orlando Leone italo.goti@up.ac.pa Juan Antonio Gómez H. juanay05@hotmail.com <p>The concentration of the heavy metals Fe, Mn, Zn, and Cu was determined in a homogenized sample of the polychaete <em>Americonuphis reesei</em> tissue in three sampling stations in Playa El Salado, Parita Bay, during the dry season in 2017. Three sampling locations were established at each station, 50 m apart from each other. Samples were digested with nitric acid, and metal concentration was determined by atomic absorption spectrophotometry. The highest concentration recorded was Fe, with an average of 581.98 µg·gˉ¹, followed by Mn with 25.71 µg·gˉ¹. The lowest values were reported for Zn, 16.05 µg·gˉ¹ and Cu, 3.52 µg·gˉ¹. A significant correlation was found between Fe and Mn (r = 0.95) and Mn and Cu (r = 0.71) <em>P</em> &lt;0.01 as well as a highly significant correlation between Fe and Cu (r = 0.64) <em>P</em> &lt;0.002. The sizes of polychaetes in stations 1 (Rio Santa María) and 3 (Palo Blanco) show no significant differences; however, sizes in station 2 (El Playón) showed differences compared to the other two stations. No correlation was found between length and metal concentration. Metal concentrations between the stations indicate that there is a significant difference in Mn and Fe in stations 1 and 3, and in Fe between stations 1 and 2. Metals detected in the tissue do not pose any risk since the concentrations are below the values of the established standards.</p> 2020-10-20T00:00:00-06:00 ##submission.copyrightStatement## https://www.revistas.una.ac.cr/index.php/revmar/article/view/14869 Response of spectral wave models under extreme wind conditions in the Gulf of Mexico 2021-01-12T06:44:15-06:00 Rodney Eduardo Mora Escalante rodney.moraescalante@ucr.ac.cr Omar Gerardo Lizano Rodríguez rodney.moraescalante@ucr.ac.cr <p>Two numerical wave models were evaluated in extreme wind conditions: a deep-water wave model, WAVEWATCH III, and a shallow water wave model, SWAN. The general objective of the research is to assess the performance of these two spectral wave models to represent the wave height under hurricane conditions with two kinds of wind models: parametric and dynamic. Four experiments were conducted with major historical hurricanes that crossed the Gulf of Mexico (Lili 2002, Ivan 2004, Rita 2005, and Gustav 2008). In order to compare results from the models, in-situ data of wind speed and significant wave height was obtained from the National Data Buoy Center and evaluated using statistical parameters. Results showed that, by using the parametric wind field model&nbsp;in SWAN and WAVEWATCH III, both models tend to represent the peaks of observed significant wave height when the storm path passes close to the measuring buoy (&lt; 400 km). Forced by the wind field of the WRF model, WAVEWATCH III tends to underestimate the peak wave height. The evaluated statistics and the time series of wind speed and wave height show that, forced by the HURWIN parametric model, SWAN and WAVEWATCH III are adequate for wave simulation under major hurricane conditions.</p> 2020-10-20T00:00:00-06:00 ##submission.copyrightStatement## https://www.revistas.una.ac.cr/index.php/revmar/article/view/14891 Spatial and temporal variations of the subtidal meiobenthic community of the central coast of Venezuela 2021-01-12T06:46:59-06:00 Carlos Pereira carlosjpereyra2@gmail.com Evelyn Zoppi De Roa carlosjpereyra2@gmail.com Vanessa Hernandez carlosjpereyra2@gmail.com Maria Angélica Crespo carlosjpereyra2@gmail.com Joxmer Scott-Frías carlosjpereyra2@gmail.com Edie Montiel carlosjpereyra2@gmail.com <p>Meiobenthos is a sediment-dwelling community with various taxonomic groups ranging in size from 63 to 500 µm. As a matter and energy link between primary producers and macrofauna, they have other functions in the ecosystem. Since this group has been scarcely studied in Venezuela, it was proposed to analyze the spatial and temporal variations in the composition and abundance of subtidal meiobenthos in the country's central coast. Samplings were conducted monthly from June 2014 to March 2015. In each sampling campaign, 12 random stations were established, and three samples were taken at each using a cylindrical sampler of 5.0 cm internal diameter. Organisms were identified and counted using microscopes, and data was processed using hypothesis tests (ANOSIM) and multivariate analyzes (SIMPER, nMDS). Meiobenthos showed a richness of 164 morphotypes and 14 phyla, with a dominance of planktonic copepods and foraminifers, followed by cnidarians and mollusks. Out of the total species reported, 84 are strictly benthic. Regarding abundance, there was a greater representation of foraminifera, followed by nematodes and mollusks, with values higher than those reported for tropical areas. Spatially, no differences were found in the composition and abundance of this community. However, two maximums were found throughout the study period, one starting in June until reaching maximum densities between August and October and the second one in February</p> 2020-10-20T00:00:00-06:00 ##submission.copyrightStatement## https://www.revistas.una.ac.cr/index.php/revmar/article/view/14899 Effect of the city of Limón marine residual waters outfall discharges on water quality and phytoplankton abundance and diversity in the surroundings of Uvita Island, Costa Rica 2021-01-12T06:49:04-06:00 Nelson Muñoz Simon nelson.munoz.simon@una.cr Liliana Piedra Castro lilliana.piedra.castro@una.cr Ricardo Jiménez Montealegre rjimenez@una.cr José Pereira Chaves jose.pereira.chaves@una.cr Meyer Guevara-Mora meyer.guevara.mora@una.cr Gilberto Piedra Marín gilberto.piedra.marin@una.ac.cr <p>In order to assess the possible impact of the marine outfall of the city of Limón on the surrounding marine environment, six sampling stations were established, four near the vent zone and two controls. Water samples were taken in each station 0m and 10m deep during 2012- 2013 to measure nutrients, physicochemical parameters, microalgae concentration, and colony forming units (CFU) of <em>Enterococcus</em>. Microalgae abundance was compared between stations under outfall influence, their controls and depths using an analysis of similarities (ANOSIM). A SIMPER analysis was also conducted to determine species when significant differences were found. Phytoplankton abundance was also used to rank the dominance of species using the Olmstead-Tukey diagram and a canonical correspondence analysis. Results showed that in the area, there is a marked influence of rainfall on nutrients, silicate and orthophosphate, in addition to parameters such as dissolved oxygen and salinity. The dissolved oxygen concentration was high, reflecting that there is no significant organic load in the environment, while CFUs remained in ranges well below the maximum limits (35 UFC/100 mL) set by the United States Environmental Protection Agency (USEPA). Phytoplankton diversity was high and composed mostly of cosmopolitan species. Due to the low nutrient concentration and CFU counts, together with the high microalgae diversity, it is concluded that there is no direct evidence of a negative impact of the marine outfall on the studied area.</p> 2020-10-20T00:00:00-06:00 ##submission.copyrightStatement##