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首页> 外文期刊>Estuarine Coastal and Shelf Science >Using fish assemblages to understand environmental connectivity and usage. A contribution to the conservation of the Yucatan Wetland
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Using fish assemblages to understand environmental connectivity and usage. A contribution to the conservation of the Yucatan Wetland

机译：使用鱼类装配来了解环境连接和用法。对尤卡坦湿地保护的贡献

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摘要

The Yucatan tidal wetland (YTW), located in the southeastern portion of the Gulf of Mexico is an extensive, heterogeneous, seasonally flooded area with a high diversity and richness, but urbanization is changing the ecosystem and, therefore, could change the functions it provides. Two important functions of the wetlands have been highlighted, its function as a nursery and the transfer of biomass to other ecosystems. To corroborate those functions, the percentage of juveniles and the links of the fish assemblage with other ecosystems need to be registered. In the present study, the fish assemblage of the YTW was analyzed to determine: (1) zonation; (2) assemblage and trophic structure; (3) environmental constraints on the fish assemblage, and (4) usage and connectivity of the ecosystem. Fifty-one stations were analyzed and segregated into three zones: Z1, the coastline, characterized by oxygenated and high salinity waters, and the highest fish richness and trophic diversity. Its fish assemblage is constituted by species associated with marine (31%), brackish (30%), reef (22%), and freshwater (17%) ecosystems, with 50% of the population registered as juveniles and 33% in the first-maturity size. Z2, the brackish environment, presents average fish richness and trophic diversity and physicochemical variation, its fish assemblage is constituted by species associated to freshwater (44%), brackish (34%), marine (15%), and reef (7%) ecosystems, with 43% of the population registered in first-maturity size and 33% in juveniles sizes. Z3, the freshwater environment, characterized by low oxygen levels and salinity, low fish richness and trophic diversity and the highest biomass. Its fish assemblage is constituted by species associated with freshwater (65%), brackish (34.5%), and marine (0.5%) ecosystems, with 80% of the population registered in adult sizes. The nursery, refuge, and feeding ground functions of the YTW and the transfer of biomass, via individuals, to other ecosystems were corroborated. It can be concluded that the YTW presents an intricate trophic and functional relationship among zones and ecosystems surrounding it; thus, the detrimental impacts in the YTW will produce negative effects in the near aquatic ecosystems. Therefore, it is of priority importance to ensure that the urban development plans of the YTW ensure the connection between zones, the clean input of freshwater, and the natural flow between the sea and the YTW.
机译：位于墨西哥湾东南部的尤卡坦潮湿地（YTW）是一种广泛，异质，季节性淹没的地区，具有高多样性和丰富性，但城市化正在改变生态系统，因此，可以改变它提供的功能。潮湿的两个重要功能突出了，其作为苗圃的功能以及生物量转移到其他生态系统。为了证实这些功能，需要注册少年的少年和鱼类组合的联系的百分比。需要注册其他生态系统。在本研究中，分析了YTW的鱼组合以确定：（1）区分; （2）组合和营养结构; （3）鱼组合的环境限制，以及（4）生态系统的使用和连接。分析了五十一站并分离成三个区域：Z1，海岸线，以氧化和高盐度水分为特征，以及最高的鱼类丰富性和营养性多样性。它的鱼类组合由与海洋有关的物种（31％），咸水（30％），珊瑚礁（22％）和淡水（17％）生态系统，其中50％的人口登记为少年，而第一个人口33％ - 丰满大小。 Z2，咸水环境，呈现平均鱼丰富和营养多样性和物理化学变异，其鱼类组合由与淡水相关的物种构成，咸水（34％），海洋（15％）和礁（7％）生态系统，43％的人口在一定程度上注册，少年尺寸为33％。 Z3，淡水环境，其特征在于低氧水平和盐度，低鱼质丰富和营养性多样性和最高生物量。其鱼组合由与淡水（65％），咸水（34.5％）和海洋（0.5％）生态系统相关的物种构成，80％的人口在成人尺寸中登记。 YTW的苗圃，避难和喂养地面功能和通过个体转移到其他生态系统的生物量传递给其他生态系统。可以得出结论，YTW在围绕它的区域和生态系统之间具有复杂的营养性和功能关系;因此，ytw中的有害影响将对近水生生态系统产生负面影响。因此，确保YTW的城市发展计划确保区域之间的连接，淡水的清洁输入以及海洋和YTW之间的自然流动的联系。

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