• Publications
  • Influence
The Ecological Role of Water-Column Microbes in the Sea*
Evidence is presented to suggest that numbers of free bacteria are controlled by nanoplankton~c heterotrophic flagellates which are ubiquitous in the marine water column, thus providing the means for returning some energy from the 'microbial loop' to the conventional planktonic food chain.
Species abundance distributions: moving beyond single prediction theories to integration within an ecological framework.
Theoretical, empirical and statistical developments in the study of Species abundance distributions are reviewed and it is optimistic that SADs can provide significant insights into basic and applied ecological science.
Effects of hypoxia and organic enrichment on the coastal marine environment
It is suggested that the major effects on benthic fauna result from hypoxia rather than organic enrichment per se and suggests that the P-R model is descriptive rather than predictive, which is widely reported but actual predictions of the model have rarely been tested.
Marine biodiversity: patterns, threats and conservation needs
  • J. S. Gray
  • Environmental Science
    Biodiversity & Conservation
  • 2004
Marine biodiversity is higher in benthic rather than pelagic systems, and in coasts rather than the open ocean since there is a greater range of habitats near the coast. The highest species diversity
Effects of environmental stress on species rich assemblages
Detailed analysis shows that there is no clear evidence that recorded reductions in the size of North Atlantic and North Sea plankton are induced by man-made stressors.
Species richness of marine soft sediments
The available evidence suggests that environmental factors such as productivity, temperature, and sediment grain-size diversity play dominant roles in determining patterns of regional-scale species richness and patterns in species turnover, and it is probably the regional scale that primarily determines local species richness.
Biomagnification in marine systems: the perspective of an ecologist.
  • J. S. Gray
  • Environmental Science, Biology
    Marine pollution bulletin
  • 1 September 2002
The species–accumulation curve and estimation of species richness
Although marine soft sediments sampled in Hong Kong were not as variable as those from the Norwegian shelf, nevertheless here the new method also gave higher estimates of total richness than the traditional species–accumulation approaches.
Detection Of Initial Effects Of Pollution On Marine Benthos - An Example From The Ekofisk And Eldfisk Oilfields North-Sea
The first recorded changes in benthic communities in response to oil were increased abundance patterns of some species and changes in the presence and absence patterns of rare species, with species being mostly present in one site group and mostly absent in another site group.
Ecology of marine sediments : from science to management
Introduction 1. Sampling sediments 2. The sediment and related environmental factors 3. Describing assemblages of sediment-living organisms 4. Diversity 5. Functional diversity of benthic assemblages