Occurrence of Bryde's whales, <scp><i>Balaenoptera edeni</i></scp>, in the northern Beibu Gulf, China

Chen, Mo; Huang, Shuqiang; Wu, Haiping; Mei, Zhigang; Chen, Yiwen; Zheng, Jing; Cheng, Wen; Keshun, Deng; Yang, Chengteng; Chen, Mao; Wang, Chun‐Chieh; Lin, Der-Yuh; Peng, Chongwei; Xu, Youhou; Wang, Ding

doi:10.1111/mms.12607

Cited by 13 publications

(21 citation statements)

References 34 publications

(71 reference statements)

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“…In this study, the data on Bryde's whales in the Gulf of Thailand were not included in the MCP scenarios because of a lack of statistically representative occurrence data. Unlike the Indo‐Pacific humpback dolphins and Irrawaddy dolphins that utilize inshore and estuarine waters as their primary habitats (Jutapruet et al., 2015, 2017; Wu et al., 2017 ) , the Bryde's whale is a pelagic baleen whale species with a wide migratory range (Best, 2001; Lodi et al., 2015), although its feeding habitats can be near shorelines (Chen et al., 2019; Iwata et al., 2017; Thongsukdee et al., 2014). The gap in the presented HPP configuration for coastal biodiversity features does not indicate inadequacy in adopting marine megafauna as MCP surrogates but, instead, highlights the importance of considering species niches when selecting MCP surrogates (Barton et al., 2020).…”

Section: Discussionmentioning

confidence: 99%

Mapping habitat protection priority over a marine ecoregion under information gaps

Kittiwattanawong

Junchompoo²,

Sakornwimon³

et al. 2020

Diversity and Distributions

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Section: Discussionmentioning

confidence: 99%

Mapping habitat protection priority over a marine ecoregion under information gaps

Kittiwattanawong

Junchompoo²,

Sakornwimon³

et al. 2020

Diversity and Distributions

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“…Moreover, its abundant biological and food resources make this region the most important feeding ground for marine mammals (Chen et al . 2019).…”

Section: Methodsmentioning

confidence: 99%

“…This region is also rich in gas, oil, and oceanic energy (Gao et al 2019). Moreover, its abundant biological and food resources make this region the most important feeding ground for marine mammals (Chen et al 2019).…”

Section: Study Site and Periodmentioning

confidence: 99%

“…Currently, the waters around Weizhou Island and Xieyang Island, Guanxi City, Beibu Gulf of China, are the only stable habitats for baleen whales in China. Since 2016, a total of 26 individual whales have been identified through preliminary questionnaires, studies, and photo identification, and the highest frequency period of Bryde's whale sightings in this area is from January to April (Chen et al 2019). However, their yearround distribution and habitat preferences remain unknown due to a lack of resources, including funding, to conduct regular surveys.…”

Section: Introductionmentioning

confidence: 99%

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Community‐based population monitoring for large baleen whales: the case study of Bryde's whale in Beibu Gulf of China

Zhang

Chen

et al. 2021

Integr. Zool.

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Citizen science is a popular method for the long-term monitoring of the distribution of wild animals. The application of these methods in different species and environments still poses challenges, especially for aquatic animals. In this study, we investigated the distribution of the Bryde's whale (Balaenoptera edeni) in the Beibu Gulf of China by using scientific boat-based surveys and citizen science approaches using 2 different methods of data collection. First, we built our mobile app (Whale Guard) and installed it on fishermen's phones. Second, we used a popular instant messaging app (WeChat) to create an online fisherman community. We found that the mobile phone app collected far fewer reports (5 reports) than the online community group (42 reports, P < 0.01). By using a variety of incentives, we maintained the fisherman's community's activity without significant user loss (P < 0.01). We also found that the locations collected by social media applications in this study were consistent with observations from scientific boat-based transect surveys. The sightings distribution of Bryde's whales differed from those in previous surveys in that they were present across larger areas. Social media apps reported that 69% of reports was confirmed by more than one person, whereas Whale Guard reports were much lower (0, P <0.001). Community-based citizen science can greatly contribute to the long-term monitoring of Bryde's whales, and it has successfully overcome the challenges of data accessibility, accuracy, and fragmentation. Our study shows how to appropriately use citizen science in different community groups and community-based approaches make them useful for large baleen whale surveys.

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“…Utilization of the habitat patches for foraging is often the explanation for the distribution of cetaceans (Heithaus & Dill, 2002; Hastie, Wilson & Thompson, 2003; Hastie et al, 2004; MacLeod & Zuur, 2005; Rossi‐Santos, Wedekin & Monteiro‐Filho, 2010; Miller et al, 2013; Moors‐Murphy, 2014; Wu et al, 2017a; Chen et al, 2019). Although regional topography such as steep slopes are generally suggested to facilitate foraging (Hastie, Wilson & Thompson, 2003; Hastie et al, 2004; Rossi‐Santos, Wedekin & Monteiro‐Filho, 2010; Wu et al, 2017a), a more explicit linkage between cetaceans' distribution and food resource is usually lacking.…”

Section: Introductionmentioning

confidence: 99%

Seasonal distribution of the Indo‐Pacific humpback dolphins: Implications for coastal habitat management

Wang

et al. 2021

Aquatic Conservation

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Organisms utilize suitable habitat patches wherein they optimize fitness. For marine megafauna such as cetaceans, foraging is generally the explanation for their utilization distribution. However, an explicit link between cetaceans' distribution and spatio‐temporal pattern of food resource is usually lacking. The Indo‐Pacific humpback dolphin (Sousa chinensis; VU listed in the IUCN Red List) inhabits the coastal waters from south‐east China to eastern India. Seasonal distribution of the humpback dolphin was explored in the northern Beibu Gulf, China. Sightings of the humpback dolphin were systematically collected at monthly intervals from 2012 winter till 2018 spring and used to derive distribution patterns from kernel density estimates. Satellite remotely sensed net primary productivity (NPP) and bathymetry were used to present oceanographic characteristics in the study region. Seasonal variations were observed in oceanographic characteristics and spatial distribution of the humpback dolphin. Although the core distribution area of the humpback dolphin showed seasonal expansion and contraction, it had consistently higher NPP and shallower depth than the survey range throughout the seasons. Our findings indicate a clear profile of these two oceanographic characteristics (i.e. NPP and bathymetry) in the humpback dolphin's core distribution area. Food resource utilization could play an important role in the humpback dolphin's distribution within the study site. The seasonal dynamics imply that not only food abundance, but also efficiency in accessing/capturing the prey may affect distribution of the humpback dolphin. In the study site, human activities that can change regional topography and productivity of the coastal water through land reclamation, dredging, sand mining and bottom trawling, should be mitigated, regulated or avoided. Proactive conservation should incorporate catchment management of the main rivers to address potential sediment and nutrient load into the estuary to protect local habitat configuration in terms of NPP and bathymetry.

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Occurrence of Bryde's whales, Balaenoptera edeni, in the northern Beibu Gulf, China

Cited by 13 publications

References 34 publications

Mapping habitat protection priority over a marine ecoregion under information gaps

Mapping habitat protection priority over a marine ecoregion under information gaps

Community‐based population monitoring for large baleen whales: the case study of Bryde's whale in Beibu Gulf of China

Seasonal distribution of the Indo‐Pacific humpback dolphins: Implications for coastal habitat management

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