Assessing variation in assemblages of large marine fauna off ocean beaches using drones

被引:59
|
作者
Kelaher, Brendan P. [1 ]
Colefax, Andrew P. [1 ,3 ]
Tagliafico, Alejandro [1 ]
Bishop, Melanie J. [2 ]
Giles, Anna [1 ]
Butcher, Paul A. [1 ,3 ]
机构
[1] Southern Cross Univ, Natl Marine Sci Ctr, Marine Ecol Res Ctr, POB 4321, Coffs Harbour, NSW 2450, Australia
[2] Macquarie Univ, Dept Biol Sci, N Ryde, NSW 2109, Australia
[3] Natl Marine Sci Ctr, NSW Dept Primary Ind, POB 4321, Coffs Harbour, NSW 2450, Australia
关键词
Carcharodon; dolphin; RPAS; ray; sandy-beach; shark; Tursiops; turtle; UAV; UAS; BOTTLE-NOSED DOLPHINS; UNMANNED AERIAL VEHICLES; TURSIOPS-TRUNCATUS; CLIMATE-CHANGE; ABUNDANCE; SHARK; ECOSYSTEMS; ECOLOGY; TECHNOLOGY; FISHERIES;
D O I
10.1071/MF18375
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
The turbulent waters off ocean beaches provide habitat for large marine fauna, including dolphins, sharks, rays, turtles and game fish. Although, historically, these assemblages have proven difficult to quantify, we used a new drone-based approach to assess spatial and temporal variation in assemblages of large marine fauna off four exposed beaches in New South Wales, Australia. In total, 4388 individual large marine animals were identified from 216 drone flights. The most common taxa, bottlenose dolphins (Tursiops spp.) and Australian cownose rays (Rhinoptera neglecta), occurred in 25.5 and 19.9% of flights respectively. White (Carcharodon carcharias), bull (Carcharhinus leucas) and other whaler (Carcharhinus spp.) sharks were observed in <1% of flights. There was significant variation in the structure of assemblages of large fauna among beaches, with those adjacent to riverine estuaries having greater richness and abundance of wildlife. Overall, drone surveys were successful in documenting the spatio-temporal dynamics of an impressive suite of large marine fauna. We contend that emerging drone technology can make a valuable contribution to the ecological information required to ensure the long-term sustainability of sandy-beach ecosystems and associated marine wildlife.
引用
收藏
页码:68 / 77
页数:10
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