Shallow water zooxanthellate coral reefs grade into ecologically distinct mesophotic coral ecosystems (MCEs) deeper in the euphotic zone. MCEs are widely considered to start at an absolute depth limit of 30m deep, possibly failing to recognise that these are distinct ecological communities that may shift shallower or deeper depending on local environmental conditions. This study aimed to explor...

In grasslands, saprotrophic fungi, including basidiomycetes, are major decomposers of dead organic matter, although spatial distributions of their mycelial assemblages are little described. The aim of this study was to characterise the scale and distribution of saprotrophic fungal communities in a coastal grassland soil using terminal restriction fragment length polymorphism (T-RFLP). Soil fung...

Eutrophication, often resulting from human activity, is a serious threat to aquatic communities. Theoretical analysis of this phenomenon, based on conceptual mathematical models, leads to controversial predictions known as Rosenzweig's paradox of enrichment. At the same time, field observations demonstrate that real plankton communities exhibit various mechanisms of self-regulation which can bu...

New data mining tools and algorithms are available for vertical data mining communities for scalable and efficient data mining to discover the hidden nuggets from huge repositories of data. Most of the traditional data mining algorithms do not scale on these huge datasets. This is due to insufficient computational resources, currently available on a single machine for running these applications...

Diatom-dominated periphyton communities growing under different current velocities on precleaned rock substrates were harvested from the Maumee River, Ohio, during the winter of 1980. Analysis of the initial stages of colonization using scanning electron microscopy revealed that the communities were compositionally very similar, but that diatom cell densities were more than three times as dense...

The physical orientation of rocky substrate profoundly affects subtidal marine communities of sessile organisms. Anecdotal descriptions of dramatic differences between communities on rock walls and adjacent horizontal rocky bottoms abound in the literature and are common knowledge among scuba divers, yet these differences have rarely been quantified by ecologists. We sampled rock walls and adja...

As for lineages of known methanogens, several lineages of uncultured archaea were recurrently retrieved in freshwater sediments. However, knowledge is missing about how these lineages might be affected and structured according to depth. In the present study, the vertical changes of archaeal communities were characterized in the deep sediment of the freshwater meromictic Lake Pavin. For that pur...