CHARACTERISTICS OF DISTRIBUTION OF SMALL PELAGIC FISH CONCENTRATIONS IN THE STRAIT OF SICILY AS INFERRED FROM RESULTS OF HYDRO ACOUSTIC RESEARCHES

机译：从水声学研究结果推论西西里海峡中细小鱼类的分布特征

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Under the framework of study project MED96/052 "Distribution, biology and biomass estimates of the Sicilian Channel anchovy", a hydroacoustic survey were carried out on the continental shelf off the southern Sicilian coast (surveyed area - 3,200 nm~2) during the peak of anchovy spawning period. Different sources for the relationship TS[dB]=f(L)[cm] were used, in order to obtain separate biomass estimations of the most abundant small pelagic species (namely, sardine, Sardina pilchardus and anchovy, Engraulis encrasicolus). The anchovy biomass evaluation produced a result of about 6,500 t, approximately one third of sardine biomass. The spatial structure of the two co-occurring populations was investigated by standard geostatistical techniques. Sardine show more small-scale variability and less spatial structure, suggesting a greater pa tchiness of this population compared to anchovy.

机译：在研究项目MED96 / 052“西西里海沟an鱼的分布，生物学和生物量估计”的框架下，在西西里南部沿海（测量面积-3,200 nm〜2）的大陆架上进行了水声调查。 an鱼产卵期。为了获得最丰富的中上层小物种（即沙丁鱼，沙丁鱼，沙丁鱼和an鱼，Engraulis encrasicolus）的不同生物量估计值，使用了关系TS [dB] = f（L）[cm]的不同来源。 an鱼生物量评估结果约为6,500吨，约为沙丁鱼生物量的三分之一。通过标准地统计技术研究了两个同时出现的种群的空间结构。沙丁鱼显示出更多的小规模变异性和较少的空间结构，表明与cho鱼相比，该种群的耐候性更高。

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《Fifth European Conference on Underwater Acoustics (ECUA 2000) Vol.2 Jul 10-13, 2000 Villeurbanne》|2000年|p.1539-1544|共6页
会议地点 Villeurbanne(FR);Villeurbanne(FR)
作者
S. Mazzola; S. Goncharov; L. Calise; A. Bonanno; G. Buscaino; B. Patti;
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IRMA-CNR, Via L. Vaccara 61, 91026 Mazara del Vallo, Italy;

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正文语种 eng
中图分类海洋学;
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CHARACTERISTICS OF DISTRIBUTION OF SMALL PELAGIC FISH CONCENTRATIONS IN THE STRAIT OF SICILY AS INFERRED FROM RESULTS OF HYDRO ACOUSTIC RESEARCHES

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