Gelatinous

Júnior, Miodeli Nogueira; Tosetto, Everton Giachini; Baldoni, Letícia Cazarin; Dutto, Sofia; Hidaka, Mitsuko; Lindsay, Dhugal J.; Nagata, Renato Mitsuo

doi:10.1201/9780429399244-9

Cited by 4 publications

(2 citation statements)

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“…It is noteworthy that many of these species may have potential environmental, anthropogenic or socioeconomic interest. For instance, Olindias spp., P. physalis, L. tetraphylla and Chrysaora lactea Eschscholtz, 1829 are well-known stingers (Kanashiro 1985;Resgalla Junior et al 2011;Patry et al 2014;Lecanda et al 2016;Bastos et al 2017;Roveta et al 2019;Santhanam 2020), and most of planktonic cnidarians are commonly considered as bioindicators of different environmental conditions, including anthropic impacts (Nogueira Júnior et al 2022). Moreover, many of these species may have high trophic impacts when abundant.…”

Section: Discussionmentioning

confidence: 99%

Epipelagic cnidarian fauna in the Western Equatorial Atlantic Ocean off the Amazon River Delta

et al. 2022

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We surveyed the epipelagic cnidarian fauna from the Western Equatorial Atlantic Ocean. A characteristic feature in this area is the freshwater discharge of the Amazon River, the largest continental inflow in the world's oceans. We analyzed 87 plankton and 90 neuston samples collected at the neritic and oceanic provinces of the Western Tropical Atlantic under the influence of the Amazon River Plume off the north coast of Brazil. We studied 34,772 organisms corresponding to 7 orders, 31 families, and 93 species. Among them, Forskalia tholoides was a new record to the coast off South America, and 20 taxa were new regional records. Species accumulation curves and diversity estimators did not reach an asymptote and clearly suggested the occurrence of a considerably higher number of species. Sampling in different seasons, with different gears, and including deeper waters certainly will further increase the number of known pelagic cnidarian species in the area. Open ocean had higher diversity than the continental shelf, both for holoplanktonic and some meroplanktonic taxa. This trend can be related to complex circulation and topography. In conclusion, we observed high diversity in the epipelagic cnidarian community. The heterogeneity of habitats in the area is likely the main factor responsible for the high biodiversity, with samples from estuarine, coastal, neritic (with a large reef system), and oceanic waters. The wide salinity range caused by the Amazon River Plume and other oceanographic mesoscale processes such as eddies and opposite currents add further complexity to the environment.

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Section: Discussionmentioning

confidence: 99%

Epipelagic cnidarian fauna in the Western Equatorial Atlantic Ocean off the Amazon River Delta

et al. 2022

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“…This perception of an ocean “jellification” is based on a growing number of records of negative impacts of jellyfish aggregations on human enterprises, including fisheries (e.g., net clogging, gear damage, reduced catch), tourism (stinging jellyfish), and clogging of water‐intakes of power production systems (Condon et al 2013). Gelatinous zooplankton taxa span different trophic levels, from grazers on microplankton (pelagic tunicates) to predators on zooplankton and ichthyoplankton (Júnior et al 2022). By competing with adult fish for zooplankton prey, and by preying on fish larvae and eggs, jellyfish may outcompete fish in stressful environments or prevent fish stock recovery after overfishing (e.g., Irish Sea, Lynam et al 2011).…”

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confidence: 99%

Pan‐Arctic distribution modeling reveals climate‐change‐driven poleward shifts of major gelatinous zooplankton species

Pantiukhin,

Verhaegen,

Havermans

2024

Limnology & Oceanography

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Anthropogenic activities, including climate change, are hypothesized to cause increases in gelatinous zooplankton population sizes and blooms. In the most rapidly changing ecosystem, the Arctic Ocean, this hypothesis has not yet been verified, and gelatinous zooplankton is commonly excluded from large‐scale modeling studies. Our modeling study is based on an extensive biogeographic dataset, aggregating from four open‐source databases (Ocean Biodiversity Information System, Global Biodiversity Information Facility, Jellyfish Database Initiative, and PANGAEA). It includes data on eight of the most reported gelatinous zooplankton taxa of the pan‐Arctic region (Aglantha digitale, Sminthea arctica, Periphylla periphylla, Cyanea capillata, Oikopleura vanhoeffeni, Fritillaria borealis, Mertensia ovum, and Beroe spp.). By coupling three‐dimensional species distribution models with oceanographic components from the Max Planck Institute Earth System Model (MPI‐ESM1.2), run for historical (1950–2014) and future (2050–2099) periods under the shared socioeconomic pathway SSP370 scenario forcing, we identified species with expanding or contracting habitat ranges in response to climate change. Our projections indicated a general tendency for gelatinous zooplankton distributions to shift, with varying degrees of suitable habitat expansion (largest for the scyphozoan C. capillata ~ +180%) or contraction (largest for the hydrozoan Sm. arctica ~ −15%). Seven of the eight species modeled, which—similar to the majority of gelatinous taxa occurring in the Arctic Ocean—predominantly represented arcto‐boreal and boreal taxa, are projected to shift to northern latitudes. Hence, profound impacts on the Arctic marine environment and associated ecosystem services can be expected.

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