Biochemical Composition and Nutritive Value of Suspended Particulate Matter Over a Tidal Flat of Southern Chile
Biochemical Composition and Nutritive Value of Suspended Particulate Matter Over a Tidal Flat of Southern Chile
复制标题
智利南部滩涂悬浮颗粒物的生化成分和营养价值
DOI：
10.1006/ecss.1993.1041
复制
发表时间：
1993
影响因子：
2.8
通讯作者：
C. Herrera
中科院分区：
文献类型：
--
作者：
J. Navarro;E. Clasing;G. Urrutia;G. Asencio;R. Stead;C. Herrera
摘要在智利南部的一个潮滩，在2年期间，悬浮颗粒物的生化组成的季节性波动。悬浮颗粒物负荷（悬浮物）高度依赖于潮汐再悬浮和初级生产力。悬浮物中的碳水化合物，脂质和蛋白质的变化主要与在这种环境中观察到的高和低的常备库存期间。它们的季节趋势非常相似，并且与悬浮物的其他成分，如有机质、叶绿素α和颗粒有机碳和氮的季节趋势高度相关。悬浮物的营养质量由食物指数表示，该食物指数基于食物材料（脂质+碳水化合物+蛋白质）与总悬浮物的比率计算。该指数与悬浮物的无机组分呈负相关。多元回归分析表明，悬浮物中无机组分和颗粒有机氮是解释食物指数变化的最佳模型，两者共占85%。结果表明，悬浮物（有机和无机部分）的总分析不能完全描述其营养价值和生化成分的详细分析，建议实现更好地了解滤食性动物的饮食质量。
Abstract Seasonal fluctuations in the biochemical composition of the suspended particulate matter were followed during 2 years in a tidal flat of southern Chile. The suspended particulate matter load (seston) was highly dependent on tidal resuspension and primary productivity. Variations in carbohydrate, lipid and protein in the seston were primarily associated with the periods of high and low standing stocks observed in this environment. Their seasonal trends were very similar and highly correlated with those described for other components of the seston, such as organic matter, chlorophyll α and particulate organic carbon and nitrogen. The nutritional quality of the seston was expressed by a food index calculated on the base of the ratio of food material (lipid + carbohydrate + protein) to total seston. This index was negatively correlated with the inorganic fraction of the seston. Multiple regression analysis showed that the best model to explain the variation of the food index included the inorganic fraction of the seston and the particulate organic nitrogen, which together accounted for 85%. The results suggest that the gross analysis of the seston (organic and inorganic fractions) cannot describe fully its nutritive value and a detailed analysis of the biochemical composition is recommended to achieve a better understanding of the quality of the diet available to filter-feeders.