Scholarlink

<p>Stoichiometric studies offer crucial insights into plant adaptation under environmental gradients. This study aimed to examine how&#xa0;<i>Sonneratia apetala</i>&#xa0;mangroves in the Jiulong River estuary adjust their stoichiometric traits, leaf morphology, and water content in response to varying soil conditions across five sites with distinct salinity levels. We analyzed leaf characteristics (carbon (C), nitrogen (N), phosphorus (P) contents, leaf width, aspect ratio, and water content) and soil properties (salinity, pH, N, and P) to assess their relationships. Key findings revealed: (1) Along the estuarine gradient (Jiulong River to Xiamen Bay), soil salinity increased while N and P availability declined, indicating a strong environmental shift. (2)&#xa0;<i>S. apetala</i>&#xa0;exhibited adaptive adjustments, including reduced leaf width and water content but increased leaf aspect ratio. (3) Despite stable leaf C content, N and P decreased (P more sharply than N), leading to an elevated nitrogen to phosphorus (N:P) ratio, suggesting persistent N limitation. (4) Statistical models confirmed that soil salinity was a key driver of leaf N and P variations. (5) Enhanced N uptake efficiency appears to be a critical strategy for&#xa0;<i>S. apetala</i>&#xa0;to cope with salinity stress. These findings highlight the species’ stoichiometric plasticity and adaptive mechanisms in dynamic estuarine environments.</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

Nutrient adaptation strategies for Sonneratia apetala under habitat gradient in Jiulong River estuary

  • 期刊论文

  • 发表日期：

    2026年6月29日

查看全文
  • Yihao Li,
  • Zhongyi Li,
  • Dongbei Han,
  • Wenzhi Cao,
  • Shengchang Yang

摘要

Stoichiometric studies offer crucial insights into plant adaptation under environmental gradients. This study aimed to examine how Sonneratia apetala mangroves in the Jiulong River estuary adjust their stoichiometric traits, leaf morphology, and water content in response to varying soil conditions across five sites with distinct salinity levels. We analyzed leaf characteristics (carbon (C), nitrogen (N), phosphorus (P) contents, leaf width, aspect ratio, and water content) and soil properties (salinity, pH, N, and P) to assess their relationships. Key findings revealed: (1) Along the estuarine gradient (Jiulong River to Xiamen Bay), soil salinity increased while N and P availability declined, indicating a strong environmental shift. (2) S. apetala exhibited adaptive adjustments, including reduced leaf width and water content but increased leaf aspect ratio. (3) Despite stable leaf C content, N and P decreased (P more sharply than N), leading to an elevated nitrogen to phosphorus (N:P) ratio, suggesting persistent N limitation. (4) Statistical models confirmed that soil salinity was a key driver of leaf N and P variations. (5) Enhanced N uptake efficiency appears to be a critical strategy for S. apetala to cope with salinity stress. These findings highlight the species’ stoichiometric plasticity and adaptive mechanisms in dynamic estuarine environments.