Scholarlink

<p>Phosphorus (P) is a critical nutrient that limits primary productivity in aquatic ecosystems. Submerged macrophytes exhibit strong capabilities for P absorption and sequestration. The P content and its fractional composition within these plants directly reflect the bioavailability of P in the ambient environment, thus providing a sensitive measure of their physiological and ecological responses to environmental changes. This study employed a sequential extraction method to partition the total plant P (TP<sub>plant</sub>) into water-soluble P (H<sub>2</sub>O-P), non-reactive organic P (NaOH-P), and calcium-bound P (HCl-P). Field surveys on submerged macrophytes in two lakes with contrasting trophic statuses were conducted to characterize interspecific variations in P fractions within submerged macrophytes and their responses to environmental changes. The study revealed a robust positive correlation between H<sub>2</sub>O-P (in contrast to NaOH-P and HCl-P) and TP<sub>plant</sub> contents, indicating that H<sub>2</sub>O-P serves as a reliable indicator for inferring the TP<sub>plant</sub>. Moreover, species characterized by a high proportion of H<sub>2</sub>O-P are more sensitive to eutrophication. There is significant interspecific variation in the H<sub>2</sub>O-P content within submerged macrophytes. The divergence in H<sub>2</sub>O-P content among these plants may be attributed to their inherent ecological strategies.</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

Water‑soluble phosphorus in submerged macrophytes reflects interspecific differences and environmental responses

  • 期刊论文

  • 发表日期：

    2025年11月27日

查看全文
  • Nan Chen,
  • Wei Li,
  • Shufang Hu,
  • Ran Luo,
  • Siqi Jiang,
  • Shuqiong Liu,
  • Ning Li,
  • Xin Liu,
  • Haojie Su,
  • Yuwei Chen,
  • Jiayou Zhong,
  • Taotao Dai

摘要

Phosphorus (P) is a critical nutrient that limits primary productivity in aquatic ecosystems. Submerged macrophytes exhibit strong capabilities for P absorption and sequestration. The P content and its fractional composition within these plants directly reflect the bioavailability of P in the ambient environment, thus providing a sensitive measure of their physiological and ecological responses to environmental changes. This study employed a sequential extraction method to partition the total plant P (TPplant) into water-soluble P (H2O-P), non-reactive organic P (NaOH-P), and calcium-bound P (HCl-P). Field surveys on submerged macrophytes in two lakes with contrasting trophic statuses were conducted to characterize interspecific variations in P fractions within submerged macrophytes and their responses to environmental changes. The study revealed a robust positive correlation between H2O-P (in contrast to NaOH-P and HCl-P) and TPplant contents, indicating that H2O-P serves as a reliable indicator for inferring the TPplant. Moreover, species characterized by a high proportion of H2O-P are more sensitive to eutrophication. There is significant interspecific variation in the H2O-P content within submerged macrophytes. The divergence in H2O-P content among these plants may be attributed to their inherent ecological strategies.