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首页> 外文期刊>Revista de Biología Tropical >Variaciones estacionales de la estructura comunitaria del fitoplancton en zonas de descarga de agua subterránea en la costa norte de la Península de Yucatán
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Variaciones estacionales de la estructura comunitaria del fitoplancton en zonas de descarga de agua subterránea en la costa norte de la Península de Yucatán

机译：尤卡坦半岛北海岸地下水排放区浮游植物群落结构的季节性变化

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Seasonal variations of community structures phytoplankton in groundwater discharge areas along the Northern Yucatán Peninsula coast. The highly touristic Yucatán Peninsula is principally constituted with coastal marine environments. Like other coastal areas, this has been affected by the increase of waste water discharge, hydrological modifications and land use changes in the area. The phytoplankton community structure is one of the main components of coastal ecosystems and the most affected in hydrological processes. In order to follow the seasonal variations, the phytoplankton was characterized to follow the hydrological variability in two sites (Dzilam and Progreso) of the Northern Yucatán Peninsula. For this, cruises were carried out monthly during one year, from April 2004 to March 2005, with two samplings per season (dry, rainy and “nortes”).Hydrological variability was associated with seasonality and directly linked to groundwater discharges in the Dzilam area, and waste water discharges in the Progreso area. The highest nutrient concentrations occurred mainly during the rainy season. The phytoplankton community changes observed throughout the year suggested that the hydrological and chemical variability associated with seasonality and anthropogenic impacts have a strong influence. The substitution of diatoms by dinoflagellates as the dominant group in Progreso was the result of seasonal variability itself, but also could have been caused by eutrophic processes; while in Dzilam, the major presence of diatoms could have been favored by groundwater discharges. The results of this study can be used to understand the linkages between stressors from the anthropogenic activities and coastal water quality and changes.
机译：尤卡坦半岛北部沿岸地下水排放区群落结构浮游植物的季节性变化。尤卡坦半岛（YucatánPeninsula）是旅游胜地，主要由沿海海洋环境组成。与其他沿海地区一样，这受到该地区废水排放量增加，水文改造和土地用途变化的影响。浮游植物群落结构是沿海生态系统的主要组成部分之一，在水文过程中受影响最大。为了适应季节变化，浮游植物的特征是遵循尤卡坦半岛北部两个地点（Dzilam和Progreso）的水文变异性。为此，从2004年4月至2005年3月，在一年中每月进行一次巡游，每个季节进行两次采样（干旱，多雨和“北部”）。水文变异性与季节有关，并与Dzilam地区的地下水排放量直接相关，并在Progreso地区排放废水。最高的养分浓度主要发生在雨季。全年观察到的浮游植物群落变化表明，与季节性和人为影响相关的水文和化学变化具有很强的影响力。在Progreso中，硅藻被角鞭毛虫取代为优势基团是季节变化本身的结果，但也可能是由富营养化过程引起的。而在Dzilam，地下水的排放可能有利于硅藻的主要存在。这项研究的结果可用于了解人为活动与沿海水质和变化之间的压力源之间的联系。

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