Finless porpoise abundance in Omura Bay, Japan: Estimation from aerial sighting surveys

被引：24

作者：

Yoshida, H

Shirakihara, K

Kishino, H

Shirakihara, M

Takemura, A

机构：

[1] Nagasaki Univ, Grad Sch Marine Sci & Engn, Nagasaki 852, Japan

[2] Mie Univ, Fac Bioresources, Tsu, Mie 514, Japan

[3] Univ Tokyo, Dept Social & Int Relat, Tokyo 153, Japan

[4] Takada Jr Coll, Tsu, Mie 514, Japan

[5] Nagasaki Univ, Grad Sch Marine Sci & Engn, Nagasaki 852, Japan

来源：

JOURNAL OF WILDLIFE MANAGEMENT | 1998年 / 62卷 / 01期

关键词：

abundance estimation; aerial sighting survey; finless porpoise; Japan; line transect sampling; Neophocaena phocaenoides; Omura Bay;

D O I：

10.2307/3802290

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

We used aerial surveys and line-transect methods to estimate the abundance of the finless porpoise (Neophocaena phocaenoides) in Omura Bay Japan. We conducted 4 surveys once each season from August 1993 to May 1994. We surveyed 621.5 km and sighted 54 porpoise groups (87 animals), In the spring survey, we detected porpoises offshore as well as inshore, whereas porpoises were mostly inshore in all other seasons. The abundance of porpoises was estimated to be 187 animals (0.6 individuals/km(2), CV = 20%).

引用

页码：286 / 291

页数：6

共 16 条

[1]

BARLOW J, 1988, FISH B-NOAA, V86, P433

[2]

Buckland S. T., 1993, Distance sampling: estimating abundance of biological populations.

[3]

Burnham K. P., 1987, AM FISHERIES SOC MON, V5

[4]

BURNHAM KP, 1980, WILDLIFE MONOGRAPHS, V72