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The jellyfish joyride: causes, consequences and management responses to a more gelatinous future.
Mounting evidence suggests that the structure of pelagic ecosystems can change rapidly from one that is dominated by fish to a less desirable gelatinous state, with lasting ecological, economic and social consequences. Expand
Jellyfish overtake fish in a heavily fished ecosystem
The main thrust or conclusion of this paper is that jellyfish biomass in the Benguela now exceeds that of once prolific finfish, because the recent estimates of fish and jelly fish biomass are from the own observations and not the interpretation of FAO data. Expand
Jellyfish overtake fish in a heavily fished ecosystem
It is reported that, in the heavily exploited northern Benguela off Namibia, a transition towards this endpoint has occurred, and jellyfish biomass now exceeds the biomass of once-abundant fish, which is a profound ecosystem change. Expand
Acoustic observations of jellyfish in the Namibian Benguela
Multi-frequency acoustic data (18, 38 and 120 kHz) were collected in conjunction with pelagic trawl sampling for gelatinous macrozooplankton during a cruise to the Namibian Benguela in SeptemberExpand
Patterns of jellyfish abundance in the North Atlantic
A number of explanations have been advanced to account for the increased frequency and intensity at which jellyfish (pelagic cnidarians and ctenophores) blooms are being observed, most of which haveExpand
The impact of sediment accumulations, relative habitat complexity and elevation on rocky shore meiofauna
It is concluded here that complexity and sediments also influence microenvironmental conditions and that this in turn has an important impact on meiofaunal communities. Expand
Jellyfication of marine ecosystems as a likely consequence of overfishing small pelagic fishes: Lessons from the Benguela
Changes in two contrasting ecosystems of the Benguela upwelling region, one dominated at mid-trophic level by jellyfishes (Namibia, northern Benguela ecosystem, where small pelagic fish abundance hasExpand
Single-target echo detections of jellyfish
The possibility may now exist for multi-frequency identification and evaluation of these jellyfish species in some circumstances, and for the use of acoustic-survey techniques to estimate jellyfish abundance. Expand
The impact of wave exposure on the meiofauna of Gelidium pristoides (Turner) Kuetzing (Gelidiales: Rhodophyta)
Examining the impact of wave exposure on the meiofaunal communities colonising Gelidium pristoides was examined on five shores around False Bay, South Africa, indicates that while the biomass of meioFauna may be greater on exposed than sheltered shores, the proportional contribution of meIOfauna to total secondary production is greater under more sheltered conditions. Expand
Trophic ecology of carnivorous zooplankton in the Benguela
Carnivorous zooplankton in the Benguela system have tended to be ignored by all but early taxonomists and a handful of recent researchers. An attempt is made here to address the importance ofExpand