Predicting the current habitat suitability and future habitat changes of Antarctic jonasfish Notolepis coatsorum in the Southern Ocean

Ran, Quan; Duan, Mengge; Wang, Pengcheng; Ye, Zhenjiang; Mou, Jianfeng; Wang, Xiangqin; Tian, Yongjun; Zhang, Chi; Qiao, Huijie; Zhang, Jie

doi:10.1016/j.dsr2.2022.105077

Cited by 7 publications

(22 citation statements)

References 61 publications

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Section: Comments On Shes and Invertebrates In Imagesmentioning

confidence: 63%

“…Notolepis coatsi was the most frequently encountered sh taxon and the second-largest sh biomass in the Cosmonaut Sea of this study like that in Prydz Bay (Van de Putte, et al, 2010; Ran, et al, 2022). It is a midsize bathypelagic sh widely distributed around the Antarctic continental shelf (Ran et al, 2022). N. coatsi may feed only on krill (Gon and Heemstra, 1990) and account for 50% of the food consumed by Antarctic fur seals (Arctocephalus gazella) (Ciaputa and Siciński, 2006).…”

Section: Comments On Shes and Invertebrates In Imagesmentioning

confidence: 72%

“…Therefore, N. coatsi plays an important role in the marine food web, which directly links krill and marine mammals in the Southern Ocean. N. coatsi is regarded as an ideal organism to evaluate the role of the Cosmonaut Sea, because of its large population size, position in the food web and specialized diet (Ran et al, 2022). Additionally, we not only explored N. coatsi behavior, but also trapped the individuals using the lander.…”

Section: Comments On Shes and Invertebrates In Imagesmentioning

confidence: 99%

“…The Cosmonaut Sea (30°~60°E) is located to the west of Enderby Land in east Antarctica, and has been poorly explored for research purposes (Meijers et al, 2010). Therefore, very few biological data have been recorded for the region (Barnes et al, 2008; Barnes et al, 2011;Linse et al, 2013), and existing ones mainly include the composition and distribution of phytoplankton, mesozooplankton, euphausiid larvae, krill, squid and Antarctic jonas sh (Hunt et al, 2007; Van de Putte et al, 2010; Ran et al, 2022). But there is still no data about macrobenthos in the Cosmonaut Sea.…”

Section: Introductionmentioning

confidence: 99%

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Benthic biodiversity by baited camera observations on the Cosmonaut Sea shelf of East Antarctica

Mou

Liu

et al. 2023

Preprint

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A free-fall baited camera lander was launched for the first time on the Cosmonaut Sea shelf of East Antarctica at the depth of 694 m during the 38th Chinese National Antarctic Research Expedition (CHINARE) in 2022. We identified 31 unique taxa (23 of invertebrates and 8 of fishes) belonging to 8 phyla from 2403 pictures and 40 videos. The Antarctic jonasfish (Notolepis coatsi) was the most frequently observed fish taxa. Ten species of vulnerable marine ecosystem (VME) taxa were observed, accounting for 32% of all species. The maximum number (MaxN) of Natatolana meridionalis individuals per image frame was ten, and they were attracted to the bait. The macrobenthic community type was sessile suspension feeders with associated fauna (SSFA), which was shaped by the muddy substrata with scattered rocks. Rocks served as the best habitats for sessile fauna. The study reveals the megafauna community and their habitat by image survey in the Cosmonaut Sea for the first time. It helped us obtain Antarctic biodiversity baselines and monitoring data for future’s ecosystem health assessment and better protection.

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Section: Comments On Shes and Invertebrates In Imagesmentioning

confidence: 63%

Section: Comments On Shes and Invertebrates In Imagesmentioning

confidence: 72%

Section: Comments On Shes and Invertebrates In Imagesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Benthic biodiversity by baited camera observations on the Cosmonaut Sea shelf of East Antarctica

Mou

Liu

et al. 2023

Preprint

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“…Antarctic marine organisms, having evolved to adapt to this unique environment, may be particularly sensitive to climate-induced environmental changes. For example, Ran et al (2022) observed a significant reduction in suitable habitats for the Antarctic Jonas fish (Notolepis coatsorum) at its northern range limits due to climate change. Additionally, they predict that this species will expand into new habitats in the Ross Sea, Weddell Sea, and northeastern Antarctic coastal waters.…”

Section: Introductionmentioning

confidence: 99%

Predicting the current fishable habitat distribution of Antarctic toothfish (Dissostichus mawsoni) and its shift in the future under climate change in the Southern Ocean

Liu,

Zhu,

Wang

et al. 2024

PeerJ

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Global warming continues to exert unprecedented impacts on marine habitats. Species distribution models (SDMs) are proven powerful in predicting habitat distribution for marine demersal species under climate change impacts. The Antarctic toothfish, Dissostichus mawsoni (Norman 1937), an ecologically and commercially significant species, is endemic to the Southern Ocean. Utilizing occurrence records and environmental data, we developed an ensemble model that integrates various modelling techniques. This model characterizes species-environment relationships and predicts current and future fishable habitats of D. mawsoni under four climate change scenarios. Ice thickness, depth and mean water temperature were the top three important factors in affecting the distribution of D. mawsoni. The ensemble prediction suggests an overall expansion of fishable habitats, potentially due to the limited occurrence records from fishery-dependent surveys. Future projections indicate varying degrees of fishable habitat loss in large areas of the Amery Ice Shelf’s eastern and western portions. Suitable fishable habitats, including the spawning grounds in the seamounts around the northern Ross Sea and the coastal waters of the Bellingshausen Sea and Amundsen Sea, were persistent under present and future environmental conditions, highlighting the importance to protect these climate refugia from anthropogenic disturbance. Though data deficiency existed in this study, our predictions can provide valuable information for designing climate-adaptive development and conservation strategies in maintaining the sustainability of this species.

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Incorporating mesopelagic fish into the evaluation of conservation areas for marine living resources under climate change scenarios

Liu

Teschke

et al. 2023

Mar Life Sci Technol

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Mesopelagic fish (meso-fish) are central species within the Southern Ocean (SO). However, their ecosystem role and adaptive capacity to climate change are rarely integrated into marine protected area (MPAs) assessments. This is a pity given their importance as crucial prey and predators in food webs, coupled with the impacts of climate change. Here, we estimate the habitat distribution of nine meso-fish using an ensemble model approach (MAXENT, random forest, and boosted regression tree). Four climate model simulations were used to project their distribution under two representative concentration pathways (RCP4.5 and RCP8.5) for short-term (2006–2055) and long-term (2050–2099) periods. In addition, we assess the ecological representativeness of established and proposed MPAs under climate change scenarios using meso-fish as indicator species. Our models show that all species shift poleward in the future. Lanternfishes (family Myctophidae) are predicted to migrate poleward more than other families (Paralepididae, Nototheniidae, Bathylagidae, and Gonostomatidae). In comparison, lanternfishes were projected to increase habitat area in the eastern SO but lose area in the western SO; the opposite was projected for species in other families. Important areas (IAs) of meso-fish are mainly distributed near the Antarctic Peninsula and East Antarctica. Proposed MPAs cover 23% of IAs at present and 38% of IAs in the future (RCP8.5, long-term future). Many IAs of meso-fish still need to be included in MPA proposals, such as the Prydz Bay and the seas around the Antarctic Peninsula. Our results provide a framework for designing new MPAs incorporating climate change adaptation strategies for MPA management.

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Predicting the current habitat suitability and future habitat changes of Antarctic jonasfish Notolepis coatsorum in the Southern Ocean

Cited by 7 publications

References 61 publications

Benthic biodiversity by baited camera observations on the Cosmonaut Sea shelf of East Antarctica

Benthic biodiversity by baited camera observations on the Cosmonaut Sea shelf of East Antarctica

Predicting the current fishable habitat distribution of Antarctic toothfish (Dissostichus mawsoni) and its shift in the future under climate change in the Southern Ocean

Incorporating mesopelagic fish into the evaluation of conservation areas for marine living resources under climate change scenarios

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