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Satellite‐Driven Synthesis of Fish Production Dynamics and Carrying Capacity Mechanisms in a High‐Altitude Lake Ecosystem.

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Title: Satellite‐Driven Synthesis of Fish Production Dynamics and Carrying Capacity Mechanisms in a High‐Altitude Lake Ecosystem.
Authors: Xuan, Ban1 (AUTHOR) banxuan@apm.ac.cn, Hongfang, Qi2 (AUTHOR), Peng, Shu3 (AUTHOR), Ying, Luo2 (AUTHOR), Feng, Ling1 (AUTHOR), Fei, Xiao1 (AUTHOR), Pengchen, Li4 (AUTHOR), Shengyun, Fu2 (AUTHOR), Hao, Du2,4 (AUTHOR)
Source: Ecology & Evolution (20457758). Feb2026, Vol. 16 Issue 2, p1-15. 15p.
Subject Terms: *Ecological carrying capacity, *Fishery management, *Mountain ecology, *Chlorophyll, *Lakes, Fish productivity, Satellite-based remote sensing, Primary productivity (Biology)
Geographic Terms: Qinghai Lake (China), China
Abstract: Understanding how limited energy constrains fish populations in fragile high‐altitude lakes is essential for sustainable fisheries management. This study developed a satellite‐based framework that integrated MODIS‐derived chlorophyll a data with a vertically generalised production model. This framework was used to map Fish Potential Production (FPP) and establish a novel Fish Carrying Capacity Index (FCCI) for the endemic naked carp (Gymnocypris przewalskii) in Qinghai Lake, China, from 2002 to 2024. Over the 23‐year period, lake‐wide fish production increased 50‐fold (from 2592 to 127,500 t) alongside an upward trend in FPP driven by primary production. Seasonally, FPP per unit area peaked in summer (July–August: 30–50 g/m2) and declined in spring (May–June: 0–30 g/m2). Spatially, the highest values occurred near riverbank and tributary estuaries, whereas central waters remained low. The FCCI revealed significant heterogeneity; the northwestern regions experienced high food demand pressure (FCCI > 0.5), while the southeastern areas were underutilised (FCCI < 0.3). As the lake‐wide FCCI never exceeded 0.6, the current level of primary productivity can support further strategic restocking, provided that releases are redirected to the southeast to relieve pressure on the northwest. This study demonstrates how remote sensing can be used to balance fish conservation and production goals in sensitive plateau ecosystems. [ABSTRACT FROM AUTHOR]
Copyright of Ecology & Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Satellite‐Driven Synthesis of Fish Production Dynamics and Carrying Capacity Mechanisms in a High‐Altitude Lake Ecosystem.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Xuan%2C+Ban%22&quot;&gt;Xuan, Ban&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; banxuan@apm.ac.cn&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Hongfang%2C+Qi%22&quot;&gt;Hongfang, Qi&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Peng%2C+Shu%22&quot;&gt;Peng, Shu&lt;/searchLink&gt;&lt;relatesTo&gt;3&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Ying%2C+Luo%22&quot;&gt;Ying, Luo&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Feng%2C+Ling%22&quot;&gt;Feng, Ling&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Fei%2C+Xiao%22&quot;&gt;Fei, Xiao&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Pengchen%2C+Li%22&quot;&gt;Pengchen, Li&lt;/searchLink&gt;&lt;relatesTo&gt;4&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Shengyun%2C+Fu%22&quot;&gt;Shengyun, Fu&lt;/searchLink&gt;&lt;relatesTo&gt;2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Hao%2C+Du%22&quot;&gt;Hao, Du&lt;/searchLink&gt;&lt;relatesTo&gt;2,4&lt;/relatesTo&gt; (AUTHOR)
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  Data: *&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Ecological+carrying+capacity%22&quot;&gt;Ecological carrying capacity&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Fishery+management%22&quot;&gt;Fishery management&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Mountain+ecology%22&quot;&gt;Mountain ecology&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Chlorophyll%22&quot;&gt;Chlorophyll&lt;/searchLink&gt;&lt;br /&gt;*&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Lakes%22&quot;&gt;Lakes&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Fish+productivity%22&quot;&gt;Fish productivity&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Satellite-based+remote+sensing%22&quot;&gt;Satellite-based remote sensing&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Primary+productivity+%28Biology%29%22&quot;&gt;Primary productivity (Biology)&lt;/searchLink&gt;
– Name: SubjectGeographic
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Qinghai+Lake+%28China%29%22&quot;&gt;Qinghai Lake (China)&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22China%22&quot;&gt;China&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Understanding how limited energy constrains fish populations in fragile high‐altitude lakes is essential for sustainable fisheries management. This study developed a satellite‐based framework that integrated MODIS‐derived chlorophyll a data with a vertically generalised production model. This framework was used to map Fish Potential Production (FPP) and establish a novel Fish Carrying Capacity Index (FCCI) for the endemic naked carp (Gymnocypris przewalskii) in Qinghai Lake, China, from 2002 to 2024. Over the 23‐year period, lake‐wide fish production increased 50‐fold (from 2592 to 127,500 t) alongside an upward trend in FPP driven by primary production. Seasonally, FPP per unit area peaked in summer (July–August: 30–50 g/m2) and declined in spring (May–June: 0–30 g/m2). Spatially, the highest values occurred near riverbank and tributary estuaries, whereas central waters remained low. The FCCI revealed significant heterogeneity; the northwestern regions experienced high food demand pressure (FCCI &gt; 0.5), while the southeastern areas were underutilised (FCCI &lt; 0.3). As the lake‐wide FCCI never exceeded 0.6, the current level of primary productivity can support further strategic restocking, provided that releases are redirected to the southeast to relieve pressure on the northwest. This study demonstrates how remote sensing can be used to balance fish conservation and production goals in sensitive plateau ecosystems. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: &lt;i&gt;Copyright of Ecology &amp; Evolution (20457758) is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1002/ece3.72989
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 1
    Subjects:
      – SubjectFull: Ecological carrying capacity
        Type: general
      – SubjectFull: Fishery management
        Type: general
      – SubjectFull: Mountain ecology
        Type: general
      – SubjectFull: Chlorophyll
        Type: general
      – SubjectFull: Lakes
        Type: general
      – SubjectFull: Fish productivity
        Type: general
      – SubjectFull: Satellite-based remote sensing
        Type: general
      – SubjectFull: Primary productivity (Biology)
        Type: general
      – SubjectFull: Qinghai Lake (China)
        Type: general
      – SubjectFull: China
        Type: general
    Titles:
      – TitleFull: Satellite‐Driven Synthesis of Fish Production Dynamics and Carrying Capacity Mechanisms in a High‐Altitude Lake Ecosystem.
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            NameFull: Xuan, Ban
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            NameFull: Hongfang, Qi
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              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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