中大西洋(西北)洋鲸类和海龟的观测

IF 0.8 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY
Rachel Wachtendonk, Mari A. Smultea, Kolby Pedrie
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引用次数: 0

摘要

由于地处偏远,人们对大西洋中部上层鲸类动物和海龟的数量和数量知之甚少。2018年6月14日至7月16日,专门的生物观察员收集了鲸类和海龟发生和分布的数据,以满足美国在西北和大西洋中部国际水域进行的基于船只的学术地球物理调查的监测和缓解要求。从百慕大北部到马萨诸塞州的伍兹霍尔,总共进行了6,949公里(503小时)的目视观测。共观察到928只鲸目动物,代表至少14个物种,以及15只海龟,代表3个物种。最常观察到的鲸类物种是大西洋白边海豚(Lagenorhynchus acutus)(340只;37%),其次是短喙普通海豚(286只;31%)和领航鲸(gloicephala spp.)(95只;10%)。这些观测数据还包括在北纬43.44°和西经36.85°观测到抹香鲸幼崽,以及在北纬38°以下观测到大西洋白边海豚。红海龟(Caretta Caretta)最常见(6只)。这项研究解决了在夏季西北大西洋一大片中上层海域鲸类和海龟出现和缺乏记录的数据缺口。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Cetacean and Sea Turtle Observations in the Remote Mid-Atlantic (NW) Ocean
Due to its remoteness, little is known about the occurrence and abundance of cetaceans and sea turtles in the pelagic mid-Atlantic Ocean. Data on cetacean and sea turtle occurrence and distribution were collected by dedicated biological observers to address U.S. monitoring and mitigation requirements associated with a vessel-based academic geophysical survey in international waters in the northwestern and mid-Atlantic Ocean from 14 June through 16 July 2018. A total of 6,949 km (503 h) of visual observations occurred while surveying north from Bermuda and ending in Woods Hole, Massachusetts. A total of 928 cetaceans representing at least 14 species and 15 sea turtles representing three species were observed. The most frequently observed cetacean species was the Atlantic white-sided dolphin (Lagenorhynchus acutus) (340 individuals; 37%) followed by the short-beaked common dolphin (Delphinus delphis) (286 individuals; 31%) and pilot whales (Globicephala spp.) (95 individuals; 10%). These sighting data also included an extralimital sighting of a sperm whale (Physeter macrocephalus) calf at 43.44° N latitude and 36.85° W longitude, and extralimital sightings of Atlantic white-sided dolphins below 38° N latitude. Loggerhead sea turtles (Caretta caretta) were seen most frequently (6 individuals). This study addresses a data gap in documented occurrence and lack of occurrence of cetaceans and sea turtles over a large pelagic area in the northwestern Atlantic Ocean during summer.
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来源期刊
Aquatic Mammals
Aquatic Mammals MARINE & FRESHWATER BIOLOGY-ZOOLOGY
CiteScore
1.60
自引率
16.70%
发文量
99
审稿时长
>12 weeks
期刊介绍: Aquatic Mammals is a peer-reviewed journal sponsored by the European Association for Aquatic Mammals (EAAM), the Alliance of Marine Mammal Parks and Aquariums (AMMPA), and the International Marine Animal Trainers’ Association (IMATA). Aquatic Mammals publishes articles related to marine mammals (whales, dolphins, seals, fur seals, sea lions, walrus, dugongs, manatees, sea otters, and polar bears). Topics of publication on both captive animals and wild marine mammals include aspects of husbandry; behavior; conservation; veterinary medicine; anatomy; physiology; training; population trends; and the effects of pollution, climate change, and noise.
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