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No Longer The Pristine Confines of the World Ocean: A Survey of Exotic Marine Species in the Southwestern Atlantic
TLDR
A comprehensive survey of existing knowledge about exotic marine organisms introduced to the southwestern Atlantic Ocean, including coastal and shelf areas of Uruguay and Argentina, presents a comprehensive picture of recorded introductions and some prominent ecological consequences.
Spatial and temporal variability in intertidal assemblages dominated by the mussel Brachidontes rodriguezii (d’Orbigny, 1846)
TLDR
Differences in structure were much greater between localities than among replicates within each locality, suggesting organic enrichment, disturbance and competitive interactions are probably the main processes determining structure in this intertidal rocky shore community.
Temporal and spatial patterns of annelid populations in intertidal sediments of the Quequén Grande estuary (Argentina)
TLDR
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.
Succession in subtidal macrofouling assemblages of a Patagonian harbour (Argentina, SW Atlantic)
TLDR
It is shown that constancy or variability of 1-year-old assemblages whose development began at different seasons depended greatly on the life history of the organisms that settled and managed to persist on both surfaces, which in turn depended on substratum orientation.
Latitudinal gradients in macroalgal biodiversity in the Southwest Atlantic between 36 and 55°S
TLDR
A database summarizing the distributional ranges of macroalgae along the coast of Argentina found a clear trend of decreasing biodiversity with decreasing latitude, suggesting an upper thermal tolerance limit for most Antarctic/sub-Antarctic seaweeds.
Association of canine juvenile generalized demodicosis with the dog leukocyte antigen system.
TLDR
It is suggested that an underlying DLA association exists with demodicosis in dogs and that this may represent an important immunological risk factor in the aetiology of this condition.
Membraniporopsis tubigera, an invasive bryozoan in sandy beaches of southern Brazil and Uruguay
TLDR
The massive irruption of the invasive bryozoan Membraniporopsis tubigera (Osburn) in sandy beaches of southern Brazil and Uruguay is reported and the chances that this invasion could proceed southwards in the Southwest Atlantic and the possible impacts that it may be causing are discussed.
Bryozoan assemblages on hard substrata: species abundance distribution and competition for space
TLDR
This study shows that even in an encrusting assemblage where competition is hierarchical, the weakest competitors persist and the dominant species are far from being capable of monopolizing space.
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