Abundance estimates of three cetacean species in the coastal waters of Matang, Perak, Peninsular Malaysia,Aquatic Conservation: Marine and Freshwater Ecosystems

当前位置： X-MOL 学术 › Aquat. Conserv. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Abundance estimates of three cetacean species in the coastal waters of Matang, Perak, Peninsular Malaysia
Aquatic Conservation: Marine and Freshwater Ecosystems ( IF 2.5 ) Pub Date : 2021-09-06 , DOI: 10.1002/aqc.3699
Sui Hyang Kuit _{1,

2} , Louisa Shobhini Ponnampalam ₂ , Philip S. Hammond ₃ , Ving Ching Chong ₁ , Amy Yee‐Hui Then ₁

Affiliation

The paucity of baseline data on coastal cetaceans due to a lack of research in developing countries frequently precludes assessment of their status and informed management actions for conservation.
This study provides the first abundance estimates of Indo-Pacific humpback dolphins, Irrawaddy dolphins, and Indo-Pacific finless porpoises in the coastal waters of Matang, Peninsular Malaysia.
Boat-based surveys covering 1,152 km² of coastal waters with 4,108 km of survey effort were conducted between 2013 and 2016 to collect data for line transect analysis of Irrawaddy dolphins and finless porpoises. Photo-identification data of humpback dolphins were concurrently collected for mark–recapture analysis.
Estimates of abundance from four sampling strata totalled 763 Irrawaddy dolphins (CV = 13%, 95% confidence interval (CI) [588, 990]) and 600 Indo-Pacific finless porpoises (CV = 27%, 95% CI [354, 1,016]).
The annual abundance estimates of humpback dolphins ranged between 171 (95% CI [148, 208]) in 2014–2015 and 81 (95% CI [67, 98]) in 2015–2016, likely due to the presence of offshore individuals that moved in and out of the study area. The estuarine strata were inhabited by 68 (95% CI [63, 73]) inshore humpback dolphins in 2013–2014 to 87 (95% CI [78, 97]) dolphins in 2014–2015.
As an International Union for Conservation of Nature important marine mammal area, the productive coastal waters of Matang are shown to support a high density of small coastal cetaceans, and the results serve as an important baseline for future studies to identify population trends for conservation management plans.

更新日期：2021-11-10

点击分享查看原文

点击收藏

阅读更多本刊最新论文