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19 Cards in this Set
- Front
- Back
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Introduction |
Media or scientifically driven? 20 years blooms = problematic impacts globally Seas around us turning into jellyfish soup |
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Bloom problems : tourism |
Irukanji syndrome Jelly forecaster checked more than weather Bloo |
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Bloom problems : fisheries |
Mauve stinger - Irish salmon farm Japan nets Aquaculture- Jill fish in net pens |
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Bloom problems : power plants |
Ecological disturbances (condon et al 2012) Block pipe cools reactor 2013 Baltic Sea 2012 Japan Humans and economics |
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Where has mauve stinger effected |
Mediterranean |
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Where has PMO’W |
California |
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References : nye 2008 |
Japan giant jelly fish in 2995 5x10^8 Medusae in E channel between Japan and Korea + effects on fisheries |
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References : keesing 2016 |
Australia box jellyfish 64 found 1500 m tow |
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Why have they bloomed? |
Eutrophication - direct and indirect Overfishing- fills niche Habitat modification Climate change warms and acidic |
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Habitat modification |
Hard substrate for cnidarian polyps to populate |
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Eutrophication |
Direct leads to more food availability for jellyfish Zooplankton feeding on increases phytoplankton die = hypoxia jelly can tolerate this |
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Jellyfish biology |
Rapid growth Eurythermal- high tolerance Voracious predators Hermaphrodite and asexual reproducers High fecundity Long generation times |
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True bloom |
Develop as a result from reproduction and recruitment of new individuals into the population |
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Apparent bloom |
Aggregation if individuals already in water by tidal fronts, water mass boundaries and local currents within embayments and wind direction |
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JeDI |
jellyfish database initiative Blooms oscillate 20 year time scales from 1950 and indicate persistent increase from 1970 |
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Why are blooms hard to understand |
Data quality Lack of long term databases Bias NH sampling |
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Bloom benefits |
Food SE Asia Tourist attraction Collagen Compounds Sent space for testing microgravity development |
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First sentence reference |
Jellyfish in last two decades reported to be increasing in eatuarine and coastal ecosystems. Media driven and public perception has resulted in a paradigm that the global oceans are turning jellyfish dominated (condon et al,2012) |
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Jellyfish soup reference |
Furuya 2015 |
