Bryde’s whales off eastern Venezuela - Vessel 1978-1979

Original provider:
Hubbs-Sea World Research Institute

Abstract:
Systematic surveys, conducted between 28 October 1978 and 13 November 1979 in the waters adjacent to Puerto la Cruz and Isla Margarita, Venezuela, documented the presence, distribution and habits of a population of Bryde's whales. Methods included aerial and boat surveys, interviews with local fishermen, and radio-tagging. Bryde's whales, apparently attracted by the abundance of food, were observed in the area between March and December; numbers were greatest in fall. Distribution within the study area varied with season: between march and August the whales were seen in the eastern part; from August to December in the western. Herd size increased from march through October. Although several cow and calf pairs were seen, breeding activities were not, and there is no evidence that this is a breeding area.

Purpose:
Surveys were supported by the local company Turismo Margarita S.A., to better understand the causes of collisions between passenger jet hydrofoils and large marine animals, and advise on procedures to minimize such risk.

Supplemental information:
An accompanying aerial survey dataset <a href="http://seamap.env.duke.edu/dataset/836">Bryde&#39;s whales off eastern Venezuela - Aerial 1978-1979</a> is available.

The provider digitized the locations from the literature.

The accuracy of the dates is year. Months and days are approximate.

No time is provided. Substituted with 00:00:00.

No group size is provided. Substituted with 1.

{'Original_provider': '原数据提供方：
Hubbs-Sea World Research Institute', 'Abstract': '自1978年10月28日至1979年11月13日，在委内瑞拉波多黎各和玛格丽塔岛附近海域进行的系统性调查，记录了布氏鲸群的分布、存在和习性。调查方法包括空中和船只巡查、与当地渔民访谈以及无线电标签追踪。布氏鲸似乎被丰富的食物资源所吸引，在3月至12月期间出现在该区域；数量在秋季达到峰值。研究区域内鲸群的分布随季节变化：3月至8月，鲸群出现在东部；8月至12月出现在西部。从3月到10月，鲸群规模逐渐增大。尽管观察到一些母鲸和小鲸的配对，但并未发现繁殖活动，且无证据表明这是一个繁殖区域。', 'Purpose': '此次调查由当地公司Turismo Margarita S.A.资助，旨在更好地理解客运喷气式水上飞机与大型海洋生物相撞的原因，并提出降低此类风险的建议。', 'Supplemental_information': '附带的空中调查数据集
<a href="http://seamap.env.duke.edu/dataset/836">布氏鲸在委内瑞拉东部海域 - 空中调查1978-1979</a>可供查阅。
数据提供方已从文献中数字化位置信息。
日期的准确性为年份。月份和日期为近似值。
未提供时间信息。以00:00:00代替。
未提供群体规模信息。以1代替。'}