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World's largest macroalgal bloom caused by expansion of seaweed aquaculture in China.
This work explored an alternative hypothesis that the cause of the green-tide in 2008 was due to the rapid expansion of Porphyra yezoensis aquaculture along the coastline over 180km away from Qingdao, and oceanographic conditions which favoured rapid growth of the bloom and contributed to transport of the Bloom north into the Yellow Sea and then onshore northwest to QingDao.
Fertilization biology of the abalone Haliotis laevigata: laboratory and field studies
It is shown that fertilization may be a limiting factor in some exploited populations when distances separating spawning individuals are too large and recruitment failures reported for South Australian populations of H. laevigata have occurred when densities fell below ca.0.3 animals·m-2.
Jellyfish blooms in China: Dominant species, causes and consequences.
This work reports on the distribution and increasing incidence of jellyfish blooms and their consequences in Chinese coastal seas and analyzes their relationship to anthropogenically derived changes to the environment in order to determine the possible causes.
Recurrence of the world's largest green-tide in 2009 in Yellow Sea, China: Porphyra yezoensis aquaculture rafts confirmed as nursery for macroalgal blooms.
Morphological and phylogenetic analysis demonstrated the homology of Ulva prolifera in the 2008 green-tide with the U. prolifera from P. yezoensis aquaculture rafts which was sufficient to seed a bloom when they are dislodged from the rafts as a result of harvesting practices.
The world's largest macroalgal bloom in the Yellow Sea, China: Formation and implications
The world's largest trans-regional macroalgal blooms during 2008-2012 occurred in the Yellow Sea, China. This review addresses the causes, development and future challenges in this unique case.
Predictable and unpredictable spawning events: in situ behavioural data from free-spawning coral reef invertebrates
The spawning behaviour and some aspects of spawning periodicity in a diverse group of marine invertebrates, principally echinoderms, but including sponges, anthozoans, molluscs, and polychaetes are described.
Feeding biology of the crown-of-thorns starfish, Acanthaster planci (Linnaeus)
Comparison of physiological requirements with feeding rates confirms that, despite increased feeding rates in large adults, growth is determinant and senility of large A. planci can be expected; this occurs because as the starfish grows its capacity to feed cannot meet the demands of metabolising tissue.
Inter- and intra-annual patterns of Ulva prolifera green tides in the Yellow Sea during 2007-2009, their origin and relationship to the expansion of coastal seaweed aquaculture in China.
It is concluded that the accumulation and disposal of waste Ulva prolifera from Porphyra aquaculture rafts is the most likely cause of the blooms.
Field measurement of feeding and movement rates of the crown-of-thorns starfish Acanthaster planci (L.)
Modelling starfish density, coral cover and feeding rate indicates that A. planci populations can fluctuate by several orders of magnitude without causing noticeable coral damage.
It is hypothesized that larvae will be influenced to a greater extent by physical than biotic factors, particularly by hydrodynamics that can determine whether competent larvae will encounter reefs, and settling larvae and juveniles will be more influenced by predation.