Spatial and temporal variability in intertidal assemblages dominated by the mussel Brachidontes rodriguezii (d’Orbigny, 1846)

  title={Spatial and temporal variability in intertidal assemblages dominated by the mussel Brachidontes rodriguezii (d’Orbigny, 1846)},
  author={Mariana L. Adami and Alejandro Tablado and Juan L{\'o}pez Gappa},
The mytilid Brachidontes rodriguezii (d’Orbigny, 1846) is the dominant organism on intertidal rocky substrata in warm-temperate shores of Argentina. Beds of this mussel were sampled at Quequén (Q) and Necochea (N) (Argentina), in order to test whether the structure of the associated assemblage shows significant changes among different times of the year, between horizontal and vertical surfaces and between localities situated in the vicinity or away from a source of sewage pollution. Twenty… 
Population dynamics of the intertidal mytilid "Brachidontes Rodriguezii" (Bivalvia) on a rocky shore
The statistical analyses indicated that both the temporal and spatial variations of B. rodriguezii production were significant, and the population always showed a high percentage of recruits throughout a year, with a maximum of 58% recruits in Necochea during the summer.
Use of shell-shape to discriminate between Brachidontes rodriguezii and Brachidontes purpuratus species (Mytilidae) in the transition zone of their distributions (south-western Atlantic)
A feasible way is described for the identification of B. rodriguezii and B. purpuratus, two small-sized species of Brachidontes distributed in the warm and cold temperate sectors of the south-western Atlantic.
Competition between mussels at the rocky intertidal zone of La Lobería, Río Negro, Argentina
The results showed a trend toward decreasing size of B. rodriguezii with increasing density of conspecifics and when it coexists with P. purpuratus, thus allowing their coexistence.
Intertidal mussel beds from the South-western Atlantic show simple structure and uniform appearance: does environmental harshness explain the community?
ABSTRACT Communities of the rocky mid-intertidal zone of the South-western Atlantic are uniform in appearance, dominated by dense monocultures of small-size mussels (Brachidontes rodriguezii and
The intertidal benthic community of SW Atlantic as an environmental indicator of 50 years of human-mediated changes
ABSTRACT The benthic communities dominated by the mussel Brachidontes rodriguezii (d’ Orbigny, 1846) are distributed in most of the rocky intertidal shores of temperate coastal areas of the SW
Endolithic invertebrate communities and bioerosion rates in southwestern Atlantic intertidal consolidated sediments
Results suggest that bioerosion contributes little to overall coastal erosion at the three study sites, but boring organisms might still facilitate physical erosion by weakening the rock either via chemical or mechanical means.
Abstract The use of rocky intertidal assemblages in paleoecology and conservation paleobiology studies is limited because these environments have low preservation potential. Here, we evaluate the
Effects of physical disturbance on a sub-Antarctic middle intertidal bivalve assemblage
Abstract We present for the first time the vulnerability to disturbance of a bivalve assemblage situated in the middle intertidal zone of the Atlantic coast of the Southern South America (53°36′S,


Tridimensional matrices of mussels Perumytilus purpuratus on intertidal platforms with varying wave forces in central Chile
The sampling method developed to collect separate mussel layers proved to be crucial for the recognition of population dynamics processes occurring within the stratified structure of mussel matrices.
Polychaete abundance and dispersion patterns in mussel beds: a non- trivial "infaunal' assemblage on a Pacific South American rocky shore
Patterns of abundance and spatial dispersion were analysed in an assemblage of polychaetes associated with mussel beds in a wave-exposed rocky intertidal habitat on the Pacific coast of subtropical
The importance of secondary substratum in a rocky intertidal community
Temporal and spatial patterns of annelid populations in intertidal sediments of the Quequén Grande estuary (Argentina)
Temporal and spatial patterns of polychaete and oligochaete populations inhabiting intertidal sediments of the Quequén Grande estuary (Buenos Aires Province, Argentina) were analysed monthly during a yearly period to characterise the assemblage of annelids.
Influence of sewage pollution on a rocky intertidal community dominated by the mytilid Brachidontes rodriguezi
The characteristic Brachidontes rodriguezi community was absent from the highly polluted intertidal area surrounding a sewage outfall at Quequen (Argentina). It began to recover in lower tidal levels
Islands of Mytilus edulis as a habitat for small intertidal animals: effect of Mytilus age structure on the species composition of the associated fauna and community organization
Community structure of the associated animals of low intertidal patches of Mytilus edulis L. with different age structure was investigated and sediments, shell fragments and byssal threads seemed to play an important role in increasing heterogeneity of environments and thus species diversity.
Filling a gap:dynamics of space occupancy on a mussel-dominated subtropical rocky shore
There are trade-offs between colonisation ability and competitive ability among these taxa, and monopolisation of space by S. algosus generally leads to an Increase in total species richness.
Effect of Algal Epiphytes on the Mussel Mytilus Californianus
The effects of facultative epiphytes on a bivalve host were studied on an islet near Santa Catalina Island, California, and it was demonstrated that over- growth significantly reduced survivorship.
Seasonal changes in an intertidal community affected by sewage pollution.
Intertidal Landscapes: Disturbance and the Dynamics of Pattern
It is suggested that the reproductive season of certain long—lived, patch—dependent species is moulded by the disturbance regime, and the necessary and vital connection between disturbance which generates spatial pattern and species richness in communities open to invasion is discussed.