meromixis

meromixis

[‚mer·ə′mik·səs]
(genetics)
Genetic exchange in bacteria involving a unidirectional transfer of a partial genome.
References in periodicals archive ?
Hyperspectral imaging of sedimentary bacterial pigments: a 1700-year history of meromixis from varved Lake Jaczno, northeast Poland.
According to Kalff (2002) meromixis, requires two conditions: first, a low vulnerability to wind mixing either due to sheltering from the surroundings or to morphometry (a high Zr), and second, some source of salinity or accretion of dissolved substances in the deeper layers of the lake.
(2005), Paleoenvironmental and Paleoclimatic Studies on the Sediments of Lake Vaha-Pitkusta and Observations of Meromixis, Publications of the Department of Geology D3, University of Helsinki, Helsinki, Finland.
Among specific topics are regulatory issues in the US, stratification and circulation, sampling and monitoring existing pit lakes, microbial reactions, approaches for evaluating the predictive reliability of pit lake numerical models, bio-geo-chemical remediation, induced meromixis, and slope stability.
Sometimes, the cause of meromixis may be that the lake contains salty water or suspended sediments at the deeper levels, but it is normally due to the fact that there is a large mass of water at a temperature near 39[degrees]F (4[degrees]C), at which its density is greatest, that does not mix easily if it is very deep, that is to say, far from the effects of the wind.
It is a warm, monomictic lake, although temporary meromixis can occur during periods of high Truckee River inflow due to salinity stratification of the water column.
For instance, the solute-supported meromixis and the tendency to precipitate carbonate, even the dominance of cryptophytes in the stable part of the water column, and are similar to the features now recognized in Laguna de Guatavita.
Rio Cuarto, parecen ser oligomicticos (con tendencia a la meromixis).