• Publications
  • Influence
The jellyfish joyride: causes, consequences and management responses to a more gelatinous future.
TLDR
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
A review of the adaptive significance and ecosystem consequences of zooplankton diel vertical migrations
  • G. Hays
  • Biology
  • Hydrobiologia
  • 1 August 2003
TLDR
Recent advances in biotelemetry promise to allow the interaction between migrating zooplankton and diving air-breathing vertebrates to be explored in far more detail than hitherto. Expand
Critical evaluation of the nursery role hypothesis for seagrass meadows
TLDR
Structure per se, rather than the type of structure, appears to be an important determinant of nursery value in seagrass meadows as well as other structured habitats. Expand
Climate change and marine plankton.
TLDR
The interactions between climate change and plankton communities are reviewed, focusing on systematic changes in plankton community structure, abundance, distribution and phenology over recent decades, to consider the potential socioeconomic impacts. Expand
Environmental context explains Lévy and Brownian movement patterns of marine predators
TLDR
Maximum-likelihood methods are used to test for Lévy patterns in relation to environmental gradients in the largest animal movement data set assembled for this purpose and results are consistent with the LÉvy-flight foraging hypothesis, supporting the contention that organism search strategies naturally evolved in such a way that they exploit optimal Lé Ivy patterns. Expand
Scaling laws of marine predator search behaviour
TLDR
Simulations show that predators have higher encounter rates when adopting Lévy-type foraging in natural-like prey fields compared with purely random landscapes, consistent with the hypothesis that observed search patterns are adapted to observed statistical patterns of the landscape. Expand
Estimating the number of green and loggerhead turtles nesting annually in the Mediterranean
TLDR
It is estimated that there are 2,280–2,787 logger-head and 339–360 green turtles nesting annually at these sites in the Mediterranean, which highlights the Critically Endangered status of this population of green turtles. Expand
The energy density of jellyfish: Estimates from bomb-calorimetry and proximate-composition
TLDR
Two techniques were described to calculate energy densities for the bell, gonad and oral arm tissues of three scyphozoan jellyfish, giving very similar estimates of energy density. Expand
Fidelity to foraging sites, consistency of migration routes and habitat modulation of home range by sea turtles
TLDR
A broad foraging dichotomy between oceanic and coastal sites has been revealed for loggerhead sea turtles, and it is expected that a gross difference in home-range size across these habitats will be expected. Expand
Variation in reproductive output of marine turtles
TLDR
Green turtles nesting in Years when large numbers of nests were recorded laid a greater number of clutches than females nesting in years with lower levels of nesting, suggesting green turtles may not be able to achieve their maximum reproductive output with respect to clutch size throughout the season. Expand
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