The Dynamics of Soil Mesofauna Communities in a Tropical Urban Coastal Wetland: Responses to Spatiotemporal Fluctuations in Phreatic Level and Salinity
The Dynamics of Soil Mesofauna Communities in a Tropical Urban Coastal Wetland: Responses to Spatiotemporal Fluctuations in Phreatic Level and Salinity
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DOI：
10.3390/arthropoda2010001
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发表时间：
2024-01
期刊：
影响因子：
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通讯作者：
Gloria Ortiz-Ramírez;Elix Hernández;Solimar Pinto-Pacheco;Elvira Cuevas
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作者：
Gloria Ortiz-Ramírez;Elix Hernández;Solimar Pinto-Pacheco;Elvira Cuevas
对生态多样性至关重要的沿海湿地已被人类活动大大改变，特别是在加勒比。这些变化造成了复杂的生境和物理化学条件，并因气候多变和海平面上升而进一步加剧。本研究在波多黎各的热带城市沿海湿地Las Cucharillas自然保护区进行，旨在确定潜水水位和盐度的时空变化对土壤中型动物群落的影响，这些群落是环境变化的重要生物指标。于二零二零年及二零二一年，于不同水文期从五个不同生境类型采集土壤样本。每个样品在四个随机选择的植物类型下采集，并使用照明的Tuller-Berlese提取器进行处理。还测量了潜水位和盐度。共有43个家庭进行了量化，强调不同的栖息地差异，相似性和整体生态系统的多样性。潜水位，盐度和中型动物的丰富度和丰度之间的中度相关性确定。在浅（-0.03至-0.07米）和略中等（-0.12至-0.17米）的潜水层（其中寡盐盐度（>0.5至5.0 ppt）占主导地位），对峰值丰富度和丰度进行了量化。这项研究强调了中型底栖动物对环境变化的适应性，以及它们作为生物传感器在气候和人为压力下有效管理沿海湿地的潜力。
Coastal wetlands, vital for ecological diversity, have been significantly altered by anthropogenic activities, particularly in the Caribbean. These changes have created a complex mosaic of habitats and physicochemical conditions, further stressed by climate variability and sea-level rise. This study, conducted in Las Cucharillas Natural Reserve, a tropical urban coastal wetland in Puerto Rico, aimed to determine the effects of spatiotemporal variations in phreatic levels and salinity on soil mesofauna assemblages, crucial bio-indicators of environmental change. In 2020 and 2021, soil samples were collected from five diverse habitat types during different hydroperiods. Each sample was taken under four randomly selected plant types and processed using lighted Tullgren–Berlese extractors. Phreatic level and salinity were also measured. A total of 43 families were quantified, underscoring distinct habitat differences, similarities, and overall ecosystem diversity. Moderate correlations between phreatic levels, salinity, and mesofauna richness and abundance were determined. Peak richness and abundance were quantified at shallow (−0.03 to −0.07 m) and slightly moderate (−0.12 to −0.17 m) phreatic levels where oligohaline salinity (>0.5 to 5.0 ppt) prevails. The study highlights the adaptability of mesofauna to environmental shifts and their potential as biosensors for effective coastal wetland management amid climatic and anthropogenic pressures.