Scholarlink

<p>Geoengineering techniques have been applied to control phosphorus and cyanobacteria, showing promising outcomes for the restoration of eutrophic aquatic ecosystems worldwide. However, the effects of the materials used in these techniques on non-target organisms, like zooplankton communities, are not well understood. This study evaluated the impacts of the materials used in the Floc and Sink geoengineering technique—specifically aluminum sulfate and polyaluminum chloride coagulants, alone or in combination with lanthanum-modified bentonite—on the taxonomic and functional diversity of zooplankton, identifying the functional traits associated with species sensitivity and tolerance. To achieve this, we conducted a 192-h bench-scale experiment using water from a eutrophic reservoir. We monitored biomass, taxonomic (richness, Shannon, and evenness) and functional (functional richness, evenness, and divergence) diversity, and functional traits related to mobility and feeding mode. Significant reductions in zooplankton biomass and diversity were observed, particularly in the treatments containing bentonite. Small-bodied, low-mobility filter feeders (e.g., rotifers and nauplii) were the most sensitive, while larger, more mobile raptorial copepods were more tolerant. These findings demonstrate that functional traits can predict species sensitivity or tolerance to geoengineering materials and highlight the importance of considering non-target impacts when applying the Floc and Sink technique for eutrophication management.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Short-term taxonomic and functional responses of zooplankton to the Floc and Sink technique: implications for non-target ecological effects

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年2月17日

查看全文
  • Juliana dos Santos Severiano,
  • Laissa Lima do Nascimento,
  • Felipe Antonio dos Santos,
  • Daniely de Lucena-Silva,
  • Amanda Myrna de Meneses e Costa,
  • Maria Eduarda Dantas César,
  • José Etham de Lucena Barbosa

摘要

Geoengineering techniques have been applied to control phosphorus and cyanobacteria, showing promising outcomes for the restoration of eutrophic aquatic ecosystems worldwide. However, the effects of the materials used in these techniques on non-target organisms, like zooplankton communities, are not well understood. This study evaluated the impacts of the materials used in the Floc and Sink geoengineering technique—specifically aluminum sulfate and polyaluminum chloride coagulants, alone or in combination with lanthanum-modified bentonite—on the taxonomic and functional diversity of zooplankton, identifying the functional traits associated with species sensitivity and tolerance. To achieve this, we conducted a 192-h bench-scale experiment using water from a eutrophic reservoir. We monitored biomass, taxonomic (richness, Shannon, and evenness) and functional (functional richness, evenness, and divergence) diversity, and functional traits related to mobility and feeding mode. Significant reductions in zooplankton biomass and diversity were observed, particularly in the treatments containing bentonite. Small-bodied, low-mobility filter feeders (e.g., rotifers and nauplii) were the most sensitive, while larger, more mobile raptorial copepods were more tolerant. These findings demonstrate that functional traits can predict species sensitivity or tolerance to geoengineering materials and highlight the importance of considering non-target impacts when applying the Floc and Sink technique for eutrophication management.