Journal ArticleDOI
Aspects of the ecology of an exposed shore population of dogwhelks Nucella lapillus (L.).
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Up to the third year of life Nucella lapillus (L.) could be aged in the laboratory and in the field using shell characters, and it was suggested that mortality rate decreased with age, and this was confirmed by calculating annual mortality rates.Abstract:
Up to the third year of life Nucella lapillus (L.) could be aged in the laboratory and in the field using shell characters. Monthly counts along transects on an exposed rocky shore have shown that the age groups behave differently, dogwhelks in their first year migrating upshore, and returning to lower levels in the second year. Adults (three years or older) lived and laid egg capsules in the low shore. The most favourable situation for subsequent hatching of these capsules was where they were permanently submerged in sea water.read more
Citations
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Journal ArticleDOI
Organization of the New England Rocky Intertidal Community: Role of Predation, Competition, and Environmental Heterogeneity
TL;DR: The influences of predation, competition, biological disturbance, exposure to wave action, and inclination and heterogeneity of the substratum on the structure of the rocky intertidal community of New England were studied with a combination of experiments and observations at six areas in Maine and Massachusetts from 1972—1975.
Journal ArticleDOI
The use of the dog-whelk, Nucella lapillus , as an indicator of tributyltin (TBT) contamination
TL;DR: The incidence and intensity of imposex have since increased markedly in the same populations and that the phenomenon is widespread around south-west England is demonstrated.
Journal ArticleDOI
Reproductive Failure in Populations of the Dog-Whelk, Nucella Lapillus , Caused by Imposex Induced by Tributyltin from Antifouling Paints
P. E. Gibbs,G. W. Bryan +1 more
TL;DR: It would appear that the accumulation of aborted capsules within the pallial oviduct eventually causes the premature death of the female and is evident from the high incidence of females containing aborted capsules in declining populations close to sources of tributyltin contamination.
Journal ArticleDOI
Predicting direct and indirect effects: an integrated approach using experiments and path analysis'
TL;DR: Using an approach combining experimental perturbations and path analysis, the mechanisms by which birds directly and indirectly affected other members of an intertidal community were examined, alternative causal hypotheses were evaluated, and whether interactions among other unmanipulated species would be strong or weak were predicted.
Book ChapterDOI
The Ecology of Intertidal Gastropods
TL;DR: The chapter dwells on the competition and predation due to the distribution and abundance of population of intertidal gastropods, its reproductive biology, and the geographical distribution and influences of gastropod on the structure of interTidal communities.
References
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Book
The ecology of rocky shores
TL;DR: The ecology of rocky shores as mentioned in this paper, the ecology of rocks, The ecology of the rocky shores, and rocky shores: a review of the current state of the art in the literature.
Journal ArticleDOI
The Use of Probability Paper for the Graphical Analysis of Polymodal Frequency Distributions
TL;DR: The mathematical analysis of bimodal distributions is very complex as mentioned in this paper, and the majority of the relations lead to exponential equations the solution of which seems more beyond the wit of man than that of a numerical equation even of the ninth order.