The microbial taxonomic composition of the three domains of life in two coastal plankton samples was assessed by random total community metagenomic sequencing and PCR-based rDNA amplicon deep-sequencing in order to compare the resulting diversity and investigate possible limitations and complementarities of each method. The various universal primer sets, used to amplify different hypervariable ...

Patterns in primary production and carbon export from the cuphotic zone suggest that the relative contribution of planktonic heterotrophs to community biomass should decline along gradients of phytoplankton biomass and primary production. Here, we use an extensive literature data survey to test the hypothesis that the ratio of total heterotrophic (bacteria + protozoa + mesozooplankton) biomass ...

Calcification in reef corals and coral reefs is widely measured using the alkalinity depletion method which is based on the fact that two protons are produced for every mole of CaCO3 precipitated. This assumption was tested by measuring the total alkalinity (TA) flux and Ca(2+) flux of isolated components (corals, alga, sediment and plankton) in reference to that of a mixed-community. Experimen...

Microeukaryotic plankton are important components of aquatic environments and play key roles in marine microbial food webs; however, little is known about their genetic diversity in subtropical offshore areas. Here we examined the community composition and genetic diversity of the microeukaryotic plankton in Xiamen offshore water by PCR-DGGE (polymerase chain reaction-denaturing gradient gel el...

The renewed interest in trait-based approaches has offered a stimulating, conceptual framework for predicting species distributions, assessing community composition and determining biodiversity–ecosystem linkages. However, despite previous attempts to clarify trait terminology and its application, selecting ecologically meaningful traits that mechanistically link levels of biological organizati...

Beratan Lake was mainly popular for tourism and aquaculture activities that affecting water's environmental characteristics. The water healthiness indicator can be seen through the organism's existence, namely plankton to nekton biota uses as an essential parameter in monitoring conditions. This study aims determine community structure index, saprobity index presence of nektons Lake. Plankton w...

N early half of all photosynthesis happens in the oceans, in communities of microscopic microbial plankton that can vary greatly in time and space. On the one hand these communities are ephemeral, changing with changing ocean conditions, but on the other they can be counted on to cycle in predictable patterns driven by seasons, weather, and ocean currents (1, 2). In PNAS, Sañudo-Wilhelmy et al....

There are four main sources of aquatic pollution: industrial wastes, municipal wastes, agricultural run-off, and accidental spillage. Non-point sources, such as automobile exhausts, add appreciable amounts of pollutants to air that may enter aquatic systems in rainfall or dry fall-out. These sources add pesticides, heavy metals, oil, petroleum products, and a large number of organic and inorgan...

Plankton metabarcoding is increasingly implemented in marine ecosystem assessments and more cost-efficient less time-consuming than monitoring based on microscopy (morphological). 18S rRNA gene the most widely used marker for groups’ species’ detection classification within eukaryotic microorganisms. These datasets have commonly relied acquisition of organismal abundances directly from number D...