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首页> 外文期刊>Estuarine Coastal and Shelf Science >The influence of nitrogen and phosphorus on phytoplankton growth and assemblage composition in four coastal, southeastern USA systems
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The influence of nitrogen and phosphorus on phytoplankton growth and assemblage composition in four coastal, southeastern USA systems

机译：氮和磷对美国东南部四个沿海系统浮游植物生长和组成组成的影响

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摘要

Human population density, and related urbanization, is predicted to increase along coastlines worldwide. Varied land Uses will likely influence nutrient delivery, mainly nitrogen (N) and phosphorus (P), to the coast and thereby phytoplankton assemblages. This study examined spatial and seasonal variability in phytoplankton community composition and growth responses to N (ammonium, nitrate, or urea) and/or P (orthophosphate) using in situ bioassays during 2011-2013. Study sites were in four southeastern US (South Carolina) coastal systems with distinct land uses: a forested tidal creek, a forested/agricultural tidal creek, an urbanized tidal creek, and a stormwater detention pond. Results showed that sites were primarily N-limited and diatoms typically contributed most to phytoplankton biomass (chlorophyll a). Phytoplankton communities at the more developed sites (urbanized creek and stormwater detention pond) not only exhibited higher biomass and growth rates with N, particularly urea, additions compared to the less-developed sites (forested and forested/agricultural tidal creeks), they often included harmful algal bloom species, particularly cyanobacteria, dinoflagellates, and raphidophytes. These findings suggest that phytoplankton community responses to N-form are site specific, influenced by surrounding land cover, and N inputs (e.g. fertilizers) may cause algal blooms. Results both underscore the role of development as a driver of coastal production and can be informative for water quality management. (C) 2016 Published by Elsevier Ltd.
机译：人口密度以及相关的城市化程度预计将沿着世界范围内的海岸线增加。各种土地用途可能会影响养分向海岸的输送，主要是氮（N）和磷（P），从而影响浮游植物的聚集。这项研究在2011-2013年期间使用原位生物测定法研究了浮游植物群落组成的空间和季节变异性以及对N（铵，硝酸盐或尿素）和/或P（正磷酸盐）的生长响应。研究地点位于美国东南部（南卡罗来纳州）的四个沿海地区，具有不同的土地用途：森林潮汐小溪，森林/农业潮汐小溪，城市化潮汐小溪和雨水滞留池。结果表明，这些位点主要是氮限制的，硅藻通常对浮游植物生物量（叶绿素a）的贡献最大。与不发达地区（森林和森林/农业潮汐小溪）相比，较发达地区（城市化小溪和雨水滞留池）的浮游植物群落不仅表现出较高的生物量和含氮（尤其是尿素）的增长率，而且添加量更高。有害藻华物种，尤其是蓝细菌，藻鞭毛藻和斜生植物。这些发现表明，浮游植物群落对N形态的反应是特定的，受周围土地覆盖的影响，并且N的输入（例如化肥）可能会导致藻华。结果既强调了发展作为沿海生产驱动力的作用，又可以为水质管理提供有益的信息。 （C）2016由Elsevier Ltd.出版

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2016年第5期|71-82|共12页
  • 作者

    Reed Michelle L.; Pinckney James L.; Keppler Charles J.; Brock Larissa M.; Hogan Sarah B.; Greenfield Dianne I.;

  • 作者单位

    Coll Charleston, Grad Program Marine Biol, 205 Ft Johnson Rd, Charleston, SC 29412 USA;

    Univ S Carolina, Marine Sci Program, 712 Main St,PSC 108, Columbia, SC 29208 USA|Univ S Carolina, Dept Biol Sci, 700 Sumter St 401, Columbia, SC 29208 USA;

    South Carolina Dept Nat Resources, Marine Resources Res Inst, 217 Ft Johnson Rd, Charleston, SC 29412 USA;

    South Carolina Dept Nat Resources, Marine Resources Res Inst, 217 Ft Johnson Rd, Charleston, SC 29412 USA|Verge Solut LLC, 710 Johnnie Dodds Blvd, Mt Pleasant, SC 29464 USA;

    South Carolina Dept Nat Resources, Marine Resources Res Inst, 217 Ft Johnson Rd, Charleston, SC 29412 USA|Verge Solut LLC, 710 Johnnie Dodds Blvd, Mt Pleasant, SC 29464 USA;

    Univ S Carolina, Marine Sci Program, 712 Main St,PSC 108, Columbia, SC 29208 USA|South Carolina Dept Nat Resources, Marine Resources Res Inst, 217 Ft Johnson Rd, Charleston, SC 29412 USA|Univ S Carolina, Hollings Marine Lab, Belle W Baruch Inst Marine & Coastal Sci, 331 Ft Johnson Rd, Charleston, SC 29412 USA;

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  • 正文语种 eng
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  • 关键词

    Phytoplankton; ChemTax; Phosphorus; Nitrogen; Urea; Land use;

    机译：浮游植物;化学税;磷;氮;尿素;土地利用;

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