Journal ArticleDOI
Caging Manipulations in Marine Soft-Bottom Communities: Importance of Animal Interactions or Sedimentary Habitat Modifications
Larry W. Hulberg,John S. Oliver +1 more
TLDR
The significant changes in the polychaete community beneath a variety of cages installed on a highly wave-exposed sand bottom could not be explained by the presence or absence of predatory demersal fishes.Abstract:
Caging manipulations were performed in two marine soft-bottom communities to test two nonexclusive hypotheses: (1) polychaete abundance changes in cages are caused by the presence or absence of particular predators and competitors; (2) polychaete changes in cages are caused by animals responding to cage-induced habitat modifications, especially sediment deposition and erosion.The significant changes in the polychaete community beneath a variety of cages installed on a highly wave-exposed sand bottom could not be explained by the presence or absence of predatory demersal fishes. This result was obtained despite the exclusion of fish which normally consume large numbers of infaunal polychaetes.A caging experiment similar to Woodin's (1974) was performed in the channel of Elkhorn Slough using comparable cages and similar exposure period. In Woodin's experiments, the exclusion of a sedentary tube builder was accompanied by an increase in a mobile deposit feeder. This was interpreted as a competitive release. ...read more
Citations
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On the prevalence and relative importance of interspecific competition: evidence from field experiments
TL;DR: The present survey illustrates how difficult it is to produce a clear and unambiguous demonstration of interspecific competition.
Book
Primary Succession and Ecosystem Rehabilitation
TL;DR: This paper provided the first comprehensive summary of how plant, animal and microbial communities develop under the harsh conditions following such dramatic disturbances, and examined the basic principles that determine ecosystem development and applied the general rules to the urgent practical need for promoting the reclamation of damaged lands.
Journal ArticleDOI
Hydrodynamic processes affecting benthic recruitment1
TL;DR: Patterns of sedimentation in the field and patterns and rates of rccruitment of several taxa depended strongly on the presence and numerical density of these structures, in agreement with a priori predictions assuming passive (i.e. purely hydrodynamic) dispersal.
References
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Journal ArticleDOI
Brazos River bar [Texas]; a study in the significance of grain size parameters
Robert L. Folk,William C. Ward +1 more
TL;DR: In this paper, a bar on the Brazos River near Calvert, Texas, has been analyzed in order to determine the geologic meaning of certain grain size parameters and to study the behavior of the size fractions with transport.
Journal ArticleDOI
Food Web Complexity and Species Diversity
TL;DR: It is suggested that local animal species diversity is related to the number of predators in the system and their efficiency in preventing single species from monopolizing some important, limiting, requisite in the marine rocky intertidal.
Macrobenthic succession in relation to organic enrichment and pollution of the marine environment
T.H. Pearson,Rutger Rosenberg +1 more
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.