Acoustic Characteristics of Sergia lucens Resources in Waters off Southwest Part of Taiwan
| Autor: | Chuan-Yuh Zeng, 曾川育 |
|---|---|
| Rok vydání: | 2010 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 98 Assessment of standing stock is the key point for the evaluation of Sergia lucens of all harvest impacts and for fishery regulation. 17 test-fishing of trawls of 4 cruises were carried out with a Simrad EY500 scientific echo sounder onboard to collect acoustic data of Sergia lucens in southwestern coast off Taiwan, from Feb. 11th to 12th and from 20th to 21st, 2010. By the nonparametric test results showed the same age group. And the Sergia lucens are included in the mean volume backscattering strength data back after deducting the volume behind the trash after the scattering intensity, and is Sergia lucens biomass and the catch ratio test, the results indicate that closely related, R = 0.9892** (p |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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