菲律宾东达沃省 Ban-ao 和 Lambajon 沿海地区桡足类的分布和多样性:环境影响和保护意义

Hanelen Pislan, Cirilo Ybañez
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引用次数: 0

摘要

桡足类是海洋生态系统的重要组成部分,促进了这些复杂系统内的能量传递。本研究调查了东达沃省巴甘加的班澳和兰巴琼沿海地区的桡足类多样性和分布情况,重点研究了影响桡足类种群的环境因素。研究发现了代表不同纲的四个桡足类家族,其中 Harpacticoida、Calanoida 和 Cyclopoida 在两个地点都很普遍,而 Misophrioida 则为 Lambajon 所独有。研究分析了溶解氧(DO)、pH 值、盐度、沉积物成分、水深和温度等物理化学参数,以了解它们与桡足类密度的相关性。研究显示,不同地点的桡足类密度和丰度存在差异,兰巴琼的总密度(49 ind/cm³)高于班澳(35 ind/cm³)。皮尔逊相关矩阵显示了每个地点桡足类密度与环境参数之间的复杂关系。在板澳,桡足类密度与溶解氧(r = 0.65)和温度(r = 0.36)之间存在很强的正相关关系。在兰巴琼,水深与桡足类密度之间存在正相关(r = 0.20)。这两个地点的桡足类多样性总体较低,这可能是人为压力造成的。这些发现强调,需要进一步研究了解环境因素与桡足类多样性之间的相互作用,这对这些沿海生态系统的有效保护和管理策略至关重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Copepod distribution and diversity in the coastal areas of Ban-ao and Lambajon, Davao Oriental, Philippines: Environmental influences and conservation implications
Copepods are essential components of marine ecosystems, facilitating energy transfer within these complex systems. The study investigates copepod diversity and distribution in Ban-ao and Lambajon coastal areas in Baganga, Davao Oriental, highlighting the environmental factors influencing copepod populations. Four copepod families representing different orders were identified, with Harpacticoida, Calanoida, and Cyclopoida prevalent in both sites, while Misophrioida was exclusive to Lambajon. Physico-chemical parameters such as dissolved oxygen (DO), pH, salinity, sediment composition, water depth, and temperature were analyzed to understand their correlation with copepod density. The study reveals variations in copepod density and abundance between the sites, with Lambajon showing a higher total density (49 ind/cm³) compared to Ban-ao (35 ind/cm³). The Pearson correlation matrix illustrates complex relationships between copepod density and environmental parameters in each site. In Ban-ao, strong positive correlations were found between copepod density and DO (r = 0.65) and temperature (r = 0.36). In Lambajon, positive correlations existed between water depth and copepod density (r = 0.20). Both sites exhibit low copepod diversity overall, potentially due to anthropogenic pressures. These findings emphasize the need for further research to understand the interactions between environmental factors and copepod diversity, essential for effective conservation and management strategies in these coastal ecosystems.  
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