Effects of Langmuir Circulations on the Plankton
نویسنده
چکیده
I wish to establish whether the plankton is affected by Langmuir circulations (LCs). LCs are wind and wave induced flows in the mixed layer (ML) and comprised of counterrotating, helical cells aligned with the wind. They occur broadly and frequently. While their surface manifestation is relatively well known, their dynamics and relation to the plankton are less well understood. Of particular interest is the effect of flow on plankton distributions and associated processes, including feeding, production, and mortality. The challenge is to measure plankton distributions and processes simultaneous with the physical flow and property distributions.
منابع مشابه
Planktonic Communities and Chaotic Advection in Dynamical Models of Langmuir Circulation
A deterministic mechanism for the production of plankton patches within a typical medium scale oceanic structure is proposed and investigated. By direct numerical simulation of a simple model of Langmuir circulation we quantify the effects of unsteady flows on planktonic communities and demonstrate their importance. Two qualitatively different zones within the flow are identified: chaotic regio...
متن کاملAnalyzing the footprints of near-surface aqueous turbulence: An image processing-based approach
[1] In this contribution, a detailed investigation of surface thermal patterns on the water surface is presented, with wind speeds ranging from 1 to 7 m s–1 and various surface conditions. Distinct structures can be observed on the surface—small-scale short-lived structures termed fish scales and larger-scale cold streaks that are consistent with the footprints of Langmuir circulations. The str...
متن کاملEffects of sumithion on growth and production of phytoplankton and zooplankton in aquaculture ponds
Sumithion is an organophosphorous pesticide widely used to control tiger bug in the fish larval rearing pond. The present study was aimed to investigate the effects of sumithion on plankton population abundance in aquaculture pond. The experiment was carried out with three treatments, i.e., ponds with no sumithion (T1), with 1.0 ppm sumithion (T2) and 2.0 ppm sumithion (T3). The water quality p...
متن کاملResearch Article: Effect of feeding level on water quality and plankton community structure in the yellow catfish (Pelteobagrus fulvidraco) rearing enclosure ecosystem
Four feeding levels (40%, 60%, 80% and 100% of satiation) were designed as the different treatment groups to assess its effects on water quality and plankton community structure in the yellow catfish rearing enclosure ecosystem. The results showed that the weight gain and specific growth rate decreased significantly as the feeding level decreased. The soluble nutrients (except for NO2-N) concen...
متن کامل