The swash zone selects functionally specialized assemblages of beach interstitial meiofauna (Platyhelminthes, Proseriata)

IF 5.4 1区环境科学与生态学 Q1 BIODIVERSITY CONSERVATION

Ecography Pub Date : 2024-10-30 DOI:10.1111/ecog.07179

Alejandro Martínez, Diego Fontaneto, Marco Curini-Galletti

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引用次数: 0

Abstract

Life is not a beach for those animals that survive in the rough ecological conditions found in marine sandy beaches – and yet, microscopic animals thrive on them. We explore the drivers for meiofaunal diversity in beaches by analysing taxonomic and functional patterns of 348 flatworm communities across 116 reflective beaches in the western Mediterranean, totalling 152 species (61.2% new to science). First, we confirm that species richness does not differ between beach hydrodynamic levels (swash, shoaling and surf) but rather depends on the characteristics of each beach. Second, we demonstrate that species composition across those levels depends on the species traits, in addition to geographical and abiotic factors. Third, we highlight that the species functional space has a lower richness than expected and a lower redundancy in the wave-exposed swash level compared to the shoaling and subtidal levels, suggesting a trait-based ecological filtering. Finally, we show that those differences depend on the higher frequency of hydrodynamics-related traits in the species of the swash level. Our results suggest that the rough hydrodynamic conditions in the swash level favour a unique combination of species traits, which might be linked to ecological speciation in flatworms but also in other interstitial animals.

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沼泽区选择了海滩间隙小型底栖生物（扁形动物、原生动物）的功能特化组合

对于那些在海洋沙滩恶劣生态条件下生存的动物来说，生活并不是沙滩--然而，微小动物却在沙滩上繁衍生息。我们通过分析地中海西部 116 个反光海滩上 348 个扁形虫群落的分类和功能模式，探讨了海滩上小型底栖生物多样性的驱动因素，这些扁形虫群落共有 152 个物种（61.2% 为新物种）。首先，我们证实不同海滩水动力水平（斜滩、浅滩和冲浪）的物种丰富度并无差异，而是取决于每个海滩的特征。其次，我们证明了这些级别之间的物种组成除了取决于地理和非生物因素外，还取决于物种特征。第三，我们强调，与滩涂和潮下层相比，波浪暴露的斜坡层物种功能空间的丰富度和冗余度低于预期，这表明存在基于性状的生态过滤。最后，我们证明这些差异取决于斜波层物种中与水动力相关的特征频率较高。我们的研究结果表明，沼泽层粗糙的水动力条件有利于物种性状的独特组合，这可能与扁形虫的生态物种分化有关，也可能与其他间隙动物的生态物种分化有关。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ecography 环境科学-生态学

CiteScore

11.60

自引率

3.40%

发文量

122

审稿时长

8-16 weeks

期刊介绍： ECOGRAPHY publishes exciting, novel, and important articles that significantly advance understanding of ecological or biodiversity patterns in space or time. Papers focusing on conservation or restoration are welcomed, provided they are anchored in ecological theory and convey a general message that goes beyond a single case study. We encourage papers that seek advancing the field through the development and testing of theory or methodology, or by proposing new tools for analysis or interpretation of ecological phenomena. Manuscripts are expected to address general principles in ecology, though they may do so using a specific model system if they adequately frame the problem relative to a generalized ecological question or problem. Purely descriptive papers are considered only if breaking new ground and/or describing patterns seldom explored. Studies focused on a single species or single location are generally discouraged unless they make a significant contribution to advancing general theory or understanding of biodiversity patterns and processes. Manuscripts merely confirming or marginally extending results of previous work are unlikely to be considered in Ecography. Papers are judged by virtue of their originality, appeal to general interest, and their contribution to new developments in studies of spatial and temporal ecological patterns. There are no biases with regard to taxon, biome, or biogeographical area.