Living organisms are constrained by both resource quantity and quality. Ecological stoichiometry offers important insights into how the elemental composition of resources affects their consumers. If resource quality decreases, consumers can respond by shifting their body stoichiometry, avoiding low-quality resources, or up-regulating feeding rates to maintain the supply of required elements whi...

Soil extracellular enzymes play an important role in ecosystem energy conversion and material cycling. Ecoenzymatic stoichiometry can reflect the relationship between soil’s microbial nutrient cycle limitation. However, there have been few studies on differences ecoenzymatic limitation rhizosphere soil bulk soil. This study examined nutrients enzyme activities a Larix principis-rupprechtii plan...

Living organisms are constrained by both resource quantity and quality. Ecological stoichiometry offers important insights into how the elemental composition of resources affects their consumers. If resource quality decreases, consumers can respond by shifting their body stoichiometry, avoiding low-quality resources, or up-regulating feeding rates to maintain the supply of required elements whi...

Human use of freshwater resources has altered the dynamics of hydrologic regimes in rivers around the world. Frequency, timing, and periodicity of extreme fluctuations in water flow have been modified, disrupting the flow regimes to which lotic biota have adapted over evolutionary time. The goal of the proposed research is to increase our understanding of how the hydrologic regime modulates lin...

Robustness of biochemical systems has become one of the central questions in systems biology although it is notoriously difficult to formally capture its multifaceted nature. Maintenance of normal system function depends not only on the stoichiometry of the underlying interrelated components, but also on the multitude of kinetic parameters. Invariant flux ratios, obtained within flux coupling a...


One of the topics in general chemistry that has often given students problems is stoichiometry. Stoichiometry is the branch of chemistry that attempts to quantify the measured relationships or ratios between two or more items. The importance of stoichiometry is not lost among those who practice it, mostly chemists or chemical engineers. For the novice learner it is difficult to see what is bey...

in sea urchin C:N (R = −0.74 and R = 0.93, for diet and growth effects, respectively) and N:P ratios (R = 0.60 and R = −0.63, also, respectively, for diet and growth effects). Among potential compensatory mechanisms helping to preserve certain levels of homeostasis, ingestion rates (g WW diet per g WW of urchin) were higher for seagrass and macroalgae diets than for the nutrient-rich formulated...

The purpose of the current study was to investigate eco-physiological responses, in terms growth and C:N:P stoichiometry plants cultured from dimorphic seeds a single-cell C4 annual Suaeda aralocaspica (Bunge) Freitag Schütze under elevated CO2. A climatic chamber experiment conducted examine effects ambient (720 µg/L) CO2-enriched (1440 treatments on these responses S. at vegetative reproducti...

Soil carbon (C), nitrogen (N), and phosphorus (P) are three important elements. The study of stoichiometric relationships soil C, N, P in tropical forests on Hainan Island, China could improve our understanding nutrient cycling provide valuable information for forest management. samples were collected at five different depths from 0 to 100 cm sites among four types total concentrations measured...

Insights into what limits the growth of soil microorganisms in mountain ecosystems increase our understanding microbial functions and processes. Although distribution pattern has been widely studied, their role biogeochemical cycles along elevation gradients arid regions is poorly understood. In this study we analyzed physicochemical properties, community structure, extracellular enzymatic acti...