Benthic Studies in Buzzards Bay. I. Animal‐Sediment Relationships1
Benthic Studies in Buzzards Bay. I. Animal‐Sediment Relationships1
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秃鹰湾的底栖动物研究 I. 动物与沉积物的关系1。
DOI：
10.4319/lo.1958.3.3.0245
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发表时间：
1958
影响因子：
4.5
通讯作者：
H. L. Sanders
中科院分区：
文献类型：
--
作者：
H. L. Sanders
在1955年10月和11月期间，在马萨诸塞州的布扎德湾的19个地点进行了底栖动物研究。动物数量范围为1，064至12，576只/m2，平均数量为4，430只。与某些其他地区相比，这些数字似乎很小，似乎是由于该地区的化学营养物浓度相对较低，初级生产量不大。两个动物群组合被确认：一个，存在于泥质沉积物中，并以'lamellibranchateNuculaproxima和多毛类Nephthysincisa为主，基本上与长岛海峡描述的相同;另一个，仅限于砂质沉积物，并以端足类AAmpeZi.sca的物种为特征。两个主要的喂养类型，滤食性和沉积物的馈线，在砂和泥沉积物，分别占主导地位。在长岛海峡和布扎德湾的某些主要沉积物饲养者的分布与沉积物的粉砂-粘土部分的相关性很差。然而，当仅使用粘土时，获得了更好的一致性。有人建议，粘土可能是最有效的标准，沉积物馈线的分布。底栖滤食性动物的分布似乎与沉积物的分选程度和中值粒径有关，最大的种群存在于分选良好的细砂中。这种分布的水动力影响进行了讨论。
During October and November 1955 a bottom faunal study was undertaken at 19 localities in Buzzards Bay, Massachusetts. The number of animals ranged from 1,064 to 12,576/m2 with a mean number of 4,430. In comparison with certain other areas these numbers appeared small and seemed to be due to the relatively low concentrations of chemical nutrients and modest primary production of the region. Two faunal assemblages were recognized: one, present in the muddy sediments and dominated by the’lamellibranch Nucula proxima and the polychaete Nephthys incisa was essentially the same communit) described from Long Island Sound; the other, restricted to the sandier sediments and characterized by species of the amphipod genus AAmpeZi.sca. The two primary feeding types, the filter-feeders and the deposit-feeders, numerically dominated in the sand and mud sediments, respectively. The distribution of certain dominant deposit-feeders in Long Island Sound and Buzzards Bay was poorly correlated with the silt-clay fraction of t,he sediment. However, when clay alone was used, a much better agreement was obtained. It was suggested that clay is probably the most valid criterion for the distribution of deposit-feeders. The distribution of infaunal filter-feeders seemed related to the degree of sorting and the median grain size of the sediment, with largest populations present in wellsorted fine sand. The hydrodynamic implications of this distribution are discussed.