C. Johnson

Publications26
h-index20
Citations1,966
Highly Influential Citations141
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  • Publications
  • Influence
Relationships between Environmental Factors and Pathogenic Vibrios in the Northern Gulf of Mexico
TLDR
Regression analysis indicated that SST had a significant association with vvh and tlh densities in water and oysters, while salinity was significantly related to vibrio densITIES in the water column, and turbidity was a significant predictor of V. parahaemolyticus illness. Expand
Ecological consequences of Late Quaternary extinctions of megafauna
  • C. Johnson
  • Biology, Medicine
  • Proceedings of the Royal Society B: Biological…
  • 22 July 2009
TLDR
Understanding the past role of giant herbivores provides fundamental insight into the history, dynamics and conservation of contemporary plant communities. Expand
Determinants of loss of mammal species during the Late Quaternary ‘megafauna’ extinctions: life history and ecology, but not body size
  • C. Johnson
  • Biology, Medicine
  • Proceedings of the Royal Society of London…
  • 7 November 2002
TLDR
This analysis shows two general features of the selectivity of Late Quaternary mammal extinctions in Australia, Eurasia, the Americas and Madagascar that are consistent with extinctions being due to interaction with human populations. Expand
Interactions between mammals and ectomycorrhizal fungi.
  • C. Johnson
  • Biology, Medicine
  • Trends in ecology & evolution
  • 1 December 1996
TLDR
New insights are produced into the evolution of mammal-vectored spore dispersal among ECM fungi, the ecological importance of mycophagy to small mammals, and the effectiveness of mammals as spore-dispersal agents. Expand
Variability of Total and Pathogenic Vibrio parahaemolyticus Densities in Northern Gulf of Mexico Water and Oysters
ABSTRACT Vibrio parahaemolyticus is indigenous to coastal environments and a frequent cause of seafood-borne gastroenteritis in the United States, primarily due to raw-oyster consumption. Previous… Expand
Species extinction and the relationship between distribution and abundance
TLDR
It is shown that although the relationship between range size and local abundance is positive for recently evolved species, it is negative for ancient species, which indicates that positive relationships betweenrange size and abundance may be generated during adaptive radiation, but are then gradually reversed as a result of differential extinction. Expand
Ecological specialization and population size in a biodiversity hotspot: How rare species avoid extinction
TLDR
It is shown that species with narrow environmental niches and small geographic ranges tend to have high and uniform local abundances, which would tend to help equalize extinction risk for specialists and generalists. Expand
Genetic Relatedness Among tdh+ and trh+Vibrio parahaemolyticus Cultured from Gulf of Mexico Oysters (Crassostrea virginica) and Surrounding Water and Sediment
TLDR
Repetitive extragenic palindromic PCR and multilocus sequence analysis revealed heterogeneity among 41 Vp containing thermostable direct hemolysin (tdh) and tdh-related hemoly sin (trh) that were isolated from Mississippi coastal environments from October 2006 to April 2007. Expand
Dispersal and the sex ratio at birth in primates
TLDR
It is shown that the intensity of competition for resources within kin groups is strongly and positively correlated with sex ratios at birth, which suggests that local resource competition among kin powerfully influences the evolution of sex ratios in primates. Expand
Adjustment of offspring sex ratios in relation to the availability of resources for philopatric offspring in the common brushtail possum
TLDR
It is shown that the availability of den sites predicts the offspring sex ratio in populations of the common brushtail possum, and low per capita availability of dens was correlated with male bias in the sex ratio at birth. Expand
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