Temporal and spatial variations drive the phytoplankton communities in rock pools in a semi-arid region

IF 1.7 4区环境科学与生态学 Q3 ECOLOGY

Aquatic Ecology Pub Date : 2024-04-22 DOI:10.1007/s10452-024-10097-3

Luciana Gomes Barbosa, Mihir R. Kulkarni, Ênio Wocyli Dantas, Danielle Lima de Oliveira, Fátima dos Santos Silva, Jascieli Carla Bortolini

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Abstract

In arid zones, ephemeral rock pools exhibit cyclical and unpredictable hydroperiods, which entail long periods of drought and short periods of flooding. The hydrological perturbations associated with the dry phase could potentially trigger abrupt changes in the structure and dynamics of the communities in temporary ecosystems. Our main objective was to investigate the processes shaping phytoplankton communities, driven by local environmental variables, spatial distribution (urban and protected rock pools), and the hydrological regime (different phases), with a focus on disturbances over space and time. The hydrological regime was irregular throughout most months, characterized by three phases distributed in rainy and dry periods. Phytoplankton biomass was higher in urban rock pools in the dry period, and analyses indicated that community structure was influenced by the local variables as temperature and total dissolved solids, by temporal phases and by spatial factors. Replacement contributed more to overall community dissimilarity than nestedness. Overall, the results highlight the role of environmental fluctuations and human pressure in urban rock pools, in structuring phytoplankton communities.

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半干旱地区岩池浮游植物群落的时空变化

在干旱地区，短时岩池呈现出周期性和不可预测的水文周期，即长时间干旱和短时间洪水。与干旱期相关的水文扰动可能会引发临时生态系统中群落结构和动态的突然变化。我们的主要目标是研究浮游植物群落的形成过程，其驱动因素包括当地环境变量、空间分布（城市和受保护的岩池）以及水文系统（不同阶段），重点是空间和时间上的扰动。大部分月份的水文状况都不规则，分为雨季和旱季三个阶段。分析表明，群落结构受温度和溶解固体总量等当地变量、时间阶段和空间因素的影响。与嵌套性相比，替换性对群落整体差异的影响更大。总之，研究结果凸显了城市岩池中环境波动和人类压力在浮游植物群落结构中的作用。

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来源期刊

Aquatic Ecology 环境科学-海洋与淡水生物学

CiteScore

3.90

自引率

0.00%

发文量

审稿时长

3 months

期刊介绍： Aquatic Ecology publishes timely, peer-reviewed original papers relating to the ecology of fresh, brackish, estuarine and marine environments. Papers on fundamental and applied novel research in both the field and the laboratory, including descriptive or experimental studies, will be included in the journal. Preference will be given to studies that address timely and current topics and are integrative and critical in approach. We discourage papers that describe presence and abundance of aquatic biota in local habitats as well as papers that are pure systematic. The journal provides a forum for the aquatic ecologist - limnologist and oceanologist alike- to discuss ecological issues related to processes and structures at different integration levels from individuals to populations, to communities and entire ecosystems.