R L Wetzel
R L Wetzel
Contemporary models of the microbial loop should be critically evaluated relative to their compartmental structures, flow networks, and treatment of upper ocean physics (vertical and horizontal boundary conditions). The development of new m...
R R Christian
R R Christian
Models of the microbial food web have generally used compartments aggregated by general body size and gross taxonomy. It has been assumed that these also reflect guilds or holons. Generally, results of simulation or analysis based on this s...
Toward the development of generally applicable models of the microbial loop in aquatic ecosystems [0.03%]
迈向开发水生生态系统中微生物环的通用模型的发展
C S Hopkinson Jr,J J Vallino
C S Hopkinson Jr
Simulation modeling has been an integral, albeit ad hoc, component of the field of aquatic microbial ecology for the past two decades. One of the most critical steps in simulation modeling is the initial formulation of a clear set of questi...
H W Ducklow
H W Ducklow
Models of the microbial food web have their origin in the debate over the importance of bacteria as an energetic subsidy for higher trophic levels leading to harvestable fisheries. Conceptualization of the microbial food web preceded numeri...
Limitation of primary production by heterotrophic assimilation and transformation of inorganic nutrients [0.03%]
异养作用同化及转化无机营养物限制初级生产
N P Revsbech
N P Revsbech
The planktonic environment is usually characterized by non-steady state conditions with events of phytoplankton blooms and sedimentation. Inorganic nutrients are stripped from the water column by sedimentation and end up in the sediments wh...
D A Caron
D A Caron
The realization that natural assemblages of planktonic bacteria may acquire a significant fraction of their nitrogen and phosphorus via the uptake of dissolved inorganic nutrients has modified our traditional view of these microorganisms as...
Complications in the determination of the nutrient status of the marine environment [0.03%]
确定海洋环境营养状况的复杂性
R Y Morita
R Y Morita
How much of the organic matter in the oceans is truly bioavailable under in situ conditions? This bioavailability may be altered by perturbation, priming, bottle (surface or confinement) effects, and air contaminants. Measured free organic ...
Controls of the microbial loop: Nutrient limitation and enzyme production, location and control [0.03%]
微生物环的控制：营养限制和酶的产生、定位及调控
C Turley
C Turley
A major controlling factor for bacterial growth is their ability to hydrolyze high molecular weight molecules too complex to be transported directly across the cell's membrane. The utility of such an extracellular enzyme hydrolysis system, ...
D K Button
D K Button
Specific affinity theory is compared with traditional ways of understanding the nutrient concentration dependency of microbial growth. It is demonstrated that the Michaelis constant increases with the ratio of metabolic enzyme to membrane p...
D L Kirchman
D L Kirchman
It is now well known that heterotrophic bacteria account for a large portion of total uptake of both phosphate (60% median) and ammonium (30% median) in freshwaters and marine environments. Less clear are the factors controlling relative up...