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首页> 外文期刊>Estuarine Coastal and Shelf Science >Primary production in the Strait of Gibraltar: Carbon fixation rates in relation to hydrodynamic and phytoplankton dynamics
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Primary production in the Strait of Gibraltar: Carbon fixation rates in relation to hydrodynamic and phytoplankton dynamics

机译：直布罗陀海峡的初级生产：碳固定率与水动力和浮游植物动力学的关系

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摘要

Primary production was studied at nine sites distributed within the Strait of Gibraltar (Southern Spain) and North-Western (NW) Alboran Sea by analyzing photosynthesis-irradiance (P-I) relationships and integrated primary production rates in relation to the different types of Deep Chlorophyll Maxima (DCM) detected in the area. The characteristics of the DCM were examined by several methods, including flow cytometry, quantification of transparent expolymer particles and fluorimetric measurements that were applied in order to assess the photo-physiological state of the phytoplankton assemblages with respect to their species composition and water column structure (hydrology). The photosynthetic parameters (derived from P-I relationships) and integrated primary production (range 6-644 mgm 2~d~(-1)) responded greatly to the diverse DCM identified and thereby the spatial variability of the primary production observed in the region was found to depend upon the occurrence of the different types of phytoplankton accumulations, which were themselves indicative of the previous history of the water column. The net contribution of the primary production to the air-sea CO_2 exchange process was also evaluated in the area. Results indicated that this region behaved as a net sink for the atmospheric CO_2, with the intensity of the flux being strongly modulated by the wind intensity.
机译：在直布罗陀海峡（西班牙南部）和西北（西北）阿尔伯兰海中分布的九个地点研究了初级生产，方法是分析光合作用与辐照度（PI）的关系以及与不同类型的深叶绿素最大值有关的综合初级生产率（DCM）在该区域中检测到。通过几种方法检查了DCM的特性，包括流式细胞仪，透明共聚物颗粒的定量分析和荧光测量，这些方法旨在评估浮游植物组合的物种组成和水柱结构的光生理状态（水文学）。光合作用参数（由PI关系推导）和综合初级生产力（范围6-644 mgm 2〜d〜（-1））对鉴定出的多种DCM响应很大，从而发现该区域初级生产力的空间变异性取决于浮游植物不同类型的堆积的发生，而浮游植物堆积本身就是水柱以前的历史指示。该地区还评估了初级产品对海气CO_2交换过程的净贡献。结果表明，该区域表现为大气CO_2的净汇，其通量强度受到风强度的强烈调节。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2009年第2期|197-210|共14页
  • 作者

    Diego Macias; Gabriel Navarro; Ana Bartual; Fidel Echevarria; I. Emma Huertas;

  • 作者单位

    Departamento de Biologia, Facultad de Ciencias del Mar y Ambientales, Universidad de Cadiz, 11519 Puerto Real, Cadiz, Spain;

    Institute de Ciencias Marinas de Andalucia, CSIC, Poligono Rio San Pedro s 11519 Puerto Real, Cadiz, Spain;

    Departamento de Biologia, Facultad de Ciencias del Mar y Ambientales, Universidad de Cadiz, 11519 Puerto Real, Cadiz, Spain;

    Departamento de Biologia, Facultad de Ciencias del Mar y Ambientales, Universidad de Cadiz, 11519 Puerto Real, Cadiz, Spain Centro Andaluz de Ciencia y Tecnologia Marina (CACYTMAR), 11519 Puerto Real, Cadiz, Spain;

    Institute de Ciencias Marinas de Andalucia, CSIC, Poligono Rio San Pedro s 11519 Puerto Real, Cadiz, Spain;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    air-sea CO_2 exchange; deep chlorophyll maximum; primary production; Strait of Gibraltar;

    机译：海海CO_2交换;深层叶绿素最大值初级生产;直布罗陀海峡;

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