1 Ocak 2021 Dergi makalesi Açık Erişim

Zhang, Xiufeng; Tong, Chunfu; Taylor, William D.; Rudstam, Lars G.; Jeppesen, Erik; Bolotov, Ivan; Bespalaya, Yulia, V; Razlutskij, Vladimir; Mei, Xueying; Liu, Zhengwen

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    "creators": [
      {
        "name": "Zhang, Xiufeng"
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      {
        "affiliation": "East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China", 
        "name": "Tong, Chunfu"
      }, 
      {
        "affiliation": "Univ Waterloo, Dept Biol, Waterloo, ON N2L 3G1, Canada", 
        "name": "Taylor, William D."
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      {
        "affiliation": "Cornell Univ, Cornell Biol Field Stn, Dept Nat Resources, New York, NY 10021 USA", 
        "name": "Rudstam, Lars G."
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      {
        "name": "Jeppesen, Erik"
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      {
        "affiliation": "Russian Acad Sci, Ural Branch, N Laverov Fed Ctr Integrated Arctic Res, Moscow, Russia", 
        "name": "Bolotov, Ivan"
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      {
        "affiliation": "Russian Acad Sci, Ural Branch, N Laverov Fed Ctr Integrated Arctic Res, Moscow, Russia", 
        "name": "Bespalaya, Yulia, V"
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      {
        "affiliation": "Natl Acad Sci Belarus Biol Resources, State Sci & Prod Amalgamat Sci Pract Ctr, Minsk, BELARUS", 
        "name": "Razlutskij, Vladimir"
      }, 
      {
        "affiliation": "Anhui Agr Univ, Coll Resources & Environm, Hefei 230036, Peoples R China", 
        "name": "Mei, Xueying"
      }, 
      {
        "name": "Liu, Zhengwen"
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    "description": "Shallow lakes have a tendency to settle into turbid or dear-water states, the latter having lower concentrations of total phosphorus (TP). However, how P-cycling is affected by and perhaps contributes to maintaining the different states is not well understood, in part because quantifying the processes involved by traditional methods is difficult To elucidate these processes, we conducted experiments using P-32-PO4 as a tracer on samples collected from the unrestored, unvegetated sections of Huizhou West Lake where turbid water prevails as well as the restored, clear-water, macrophyte-rich waters of the lake. We measured PO4 uptake rates, P-32-PO4 accumulation by various plankton size-fractions (picoplankton (0.2-2 mu m), nanoplankton (2-20 mu m) and microplankton (>20 mu m)) as well as release rates of P-32-PO4 by labelled plankton. Our results revealed slow PO4 uptake in the turbid state due to low PO4 concentration, slow recycling of the high particulate P, and high levels of particulate P-32 which may allow for continuous high growth and biomass of phytoplankton. In contrast, in the dear water state, the uptake of PO4 was rapid due to a higher PO4 concentration, the recycling rates of particulate P-32 were high and the levels of particulate P-32 were low, potentially constraining the phytoplankton growth. A greater proportion of particulate P-32 was in the microplankton fraction in dear waters, suggesting that grazing by microplankton may play an important role in the rapid P recycling in dear-waters. Our results provide some evidence for a reinforcement of the turbid conditions (low recycling rate) when the lake is in a turbid state and vice versa when in the clear water state. The results add new knowledge to the understanding of P cyding in shallow lakes and illustrate the utility of using P-kinetics in contrasting states in plankton communities. (C) 2020 Published by Elsevier B.V.", 
    "doi": "10.1016/j.scitotenv.2020.144357", 
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    "journal": {
      "title": "SCIENCE OF THE TOTAL ENVIRONMENT", 
      "volume": "769"
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    "license": {
      "id": "cc-by"
    }, 
    "publication_date": "2021-01-01", 
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    "title": "Does differential phosphorus processing by plankton influence the ecological state of shallow lakes?"
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