Adult-larval interactions in dense infaunal assemblages: Patterns of abundance

Dense assemblages of infauna! organisms are of three types: burrowing deposit feeders, suspension feeders, and tube builders. Such assemblages are discrete, often age-class dominated, and have sharp boundaries with neighboring assemblages. The hypothesis presented is that the sharp boundaries observed among assemblage types and the maintenance of these discrete dense assemblages in infauna! systems is due to interactions among the established infaunal individuals and settling larvae...

EFFECTS OF BROWSING PREDATORS: ACTIVITY CHANGES IN INFAUNA FOLLOWING TISSUE LOSS

Volume: 166Start Page: 558End Page: 57

The Effect of Palp Loss on Feeding Behavior of Two Spionid Polychaetes: Changes in Exposure

Volume: 183Start Page: 440End Page: 44

Population structure and spread of the Polychaete Diopatra biscayensis along the French Atlantic Coast: Human-assisted transport by-passes larval dispersal

Intertidal populations of the ecosystem engineering polychaete, Diopatra biscayensis, were analyzed on the French Atlantic coast for three years with individual size estimated from tube-cap aperture. All but the northernmost population along the Bay of Biscay have yearly recruitment. Individuals live 3-5 years and are likely reproductive as one year olds. Simulations indicate dispersal distances are < 50 km; yet, populations also exist within the Normano-Breton Gulf in the western English Channel, more than 450 km from the northernmost Bay of Biscay population at La Trinité-sur-Mer. Three of the four populations in the Normano-Breton Gulf have no young of the year, but are near to active mussel culture where mussel seed is transported on ropes from dense D. biscayensis areas in the Vendée-Charente region in the Bay of Biscay. The majority of D. biscayensis were adjacent to the likely source, mussel seed ropes. Transport assisted by aquaculture is the likely explanation for the populations in the Normano-Breton Gulf

Diopatra (Onuphidae: Polychaeta) from intertidal sediments in southwestern Europe

Fauchald, Kristian, Berke, Sarah Kosting, Woodin, Sarah Ann (2012): Diopatra (Onuphidae: Polychaeta) from intertidal sediments in southwestern Europe. Zootaxa 3395: 47-58, DOI: 10.5281/zenodo.21320

Process-Specific Recruitment Cues in Marine Sedimentary Systems

Volume: 189Start Page: 49End Page: 5

Cascading, interactive, and indirect effects of climate change on aquatic communities, habitats, and ecosystems

Climate-change is rapidly and intensively altering aquatic communities and habitats. While previous work has focused on direct effects of potential drivers, indirect and interactive effects on organisms and ecosystems have received less attention. Here, we give an overview of contributions to a special issue in Limnology and Oceanography that addresses this knowledge gap. Contributions covered diverse habitats, from polar to tropical regions, alpine streams to coral reefs. Several studies relied on time-series to identify indirect effects, thus emphasizing our need to maintain high-quality time-series data. Time-series are particularly crucial now that the pace of climate-change on aquatic-ecosystems is accelerating. Another common theme is the role of species-specific characteristics in physiology, behavior or genetics in aquatic ecosystem function. The addition of inter- and intra-specific variability to investigations of climate-change may be challenging particularly since ecosystem studies typically involve a large parameter space of environmental and biological variables across spatial and temporal scales. However, the results demonstrate that inclusion of species-specific dynamics, although challenging, can deliver mechanistic insights into aquatic ecosystem patterns and processes. Some contributions leverage habitat changes from disturbances or climate shifts to document capacity for resilience or recovery of pelagic and benthic communities. Jointly, the results in this special issue document fruitful approaches and provide urgent information needed for deciphering aquatic ecosystem responses to climate forcings. This information is foundational if we wish to tackle the combined effects of climate change and other human impacts with maximum efficacy and minimize unintended consequences for biodiversity and ecosystem functioning

Localization of the Chloroperoxidase of the Capitellid Polychaete Notomastus lobatus

Volume: 187Start Page: 215End Page: 22