yes,it is ,my research is to prove the view
The amount of chemical energy in consumers' food that is converted to their own new biomass during a given time period is known as Net Primary Productivity (NPP). It represents the energy that is available to the next trophic level in an ecosystem for growth and reproduction.
Abbreviations A: Adenosine Ade: Adenine ATP: Adenosine triphosphate B: Nucleobase BMF4TPA: Bis(difluoromethylene)triphosphoric acid BMT: Bismethylene triphosphate Boc: Tert-Butyloxycarbonyl Bop: Bis(2-oxo-3-oxazolidinyl)phosphinic BP : Protected nucleobase BTT: 5-Benzylthio-1-H-tetrazole C: Cytosine CDI: Carbodiimidazole CE: β-Cyanoethyl CEM: Cyanooxymethyl CMPT: N-(cyanomethyl)pyrrolidinium triflate CPG: Controlled pore glass CTP: Cytidine triphosphate Cyt: Cytidine DBU: 1,8-Diazabicyclo[5.4.0]undec-7-ene DCA: Dichloroacetic acid DCI: 4,5-Dicyanoimidazole DEAE: Diethylaminoethyl DIAD: Diisopropyl azodicarboxylate DIPEA: Diisopropylethylamine DMAN: 1,8-Bis-(dimethylamino)naphthalene DMF: N,N-dimethylformamide DMS: Dimethylsulfide DMTr: 4,4′-Dimethoyxltrityl DTD: N,N-dimethylthiuram disulfide EC50 : Half maximal effective concentration EDC/EDCI: 1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide ETT: 5-(Ethylthio)-1H-tetrazole Fm: 9-Fluorenylmethyl Fmoc: Fluorenylmethyloxycarbonyl G: Guanosine Gua: Guanine IC50 : Half maximal inhibitor concentration IEX-HPLC: Ion-exchange high performance liquid chromatography KHMDS: Hexamethyldisilazide LTMPA: Lithium 2,2,6,6-tetramethylpiperidine amide NHS: N-hydroxysuccinimide NMP: Nucleoside monophosphate Npn : Nucleoside polyphosphate NpnN: Dinucleotide polyphosphate NPP: Nucleotide pyrophosphatase/phosphodiesterase Ns: Nosyl NTP: Nucleoside triphosphate NTP: Nucleoside triphosphate Nuc: Nucleotide or nucleoside ODN: Oligodeoxynucleotides ORN: Oligoribonucleotide OTP: Oxathiaphospholane PEP: Phosphoenolpyruvate Pip: Piperidine PK: Pyruvate dinase ppGpp: Guanosin-3′,5′-bispyrophosphate ppp: RNA 5′-triphosphate RNAs PRR: Pattern recognition receptors Py: Pyridine RP18: Reverse phase C18 RSH: RelA-SpoT homolog SAX: Strong anion exchange T: Thymine TBAF: Tetrabutylammonium fluoride TBHP: tert-Butylhydroperoxide TBS: tert-Butyldimethylsilyl TEA: Triethylamine TEAB: Triethylammonium bicarbonate Tf: Trifluoromethylsulfonyl THF: Tetrahydrofuran Thy: Thymidine TMS: Trimethylsilyl Tr: 2,4,6-Triisopropylbenzenesulfonyl Ts: p-Toluenesulfonyl U: Uridine Ura: Uracil UTP: Uridine triphosphate
GPP (gross primary production) minus cellular respiration.
Gross Primary Productivity (GPP) is the total amount of energy that plants capture through photosynthesis, while Net Primary Productivity (NPP) is the amount of energy that plants store after accounting for their own energy needs. The key difference is that GPP represents the total energy captured, while NPP represents the energy available to consumers in the ecosystem. The difference between GPP and NPP impacts the overall productivity and efficiency of an ecosystem because NPP is what is available for consumption by herbivores and higher trophic levels. A higher NPP means more energy is available for organisms to grow and reproduce, leading to a more productive and efficient ecosystem. Conversely, a lower NPP can limit the amount of energy available for higher trophic levels, potentially impacting the overall biodiversity and stability of the ecosystem.
Gross Primary Productivity (GPP) is the total amount of energy that plants capture through photosynthesis, while Net Primary Productivity (NPP) is the amount of energy that plants store after accounting for the energy they use for their own growth and metabolism. In other words, GPP is the total production of plants, while NPP is the amount of energy available for consumption by other organisms in the ecosystem.
Net primary productivity (NPP) is the amount of energy that plants store through photosynthesis after accounting for the energy they use for their own growth and metabolism. Gross primary productivity (GPP) is the total amount of energy that plants capture through photosynthesis. The key difference is that NPP represents the energy available for consumption by other organisms, while GPP is the total energy captured by plants.
Gross primary productivity (GPP) is the total amount of energy that plants capture through photosynthesis. Net primary productivity (NPP) is the amount of energy that plants store after accounting for the energy they use in respiration. The respiration equation represents the process by which organisms release energy from stored food. In an ecosystem, the relationship between GPP, NPP, and the respiration equation shows how energy flows through the system, with NPP being the energy available for consumption by other organisms after accounting for plant respiration.
The rate at which an ecosystems producers covert solar energy into chemical energy (in the form of biomass). To Solve : GPP = NPP + R (R - Respiration)
The formula for net primary production at each trophic level is: Net Primary Production (NPP) = Gross Primary Production (GPP) - Respiration by Autotrophs. GPP is the total amount of energy captured by producers through photosynthesis, while respiration by autotrophs is the amount of energy that producers use for their own metabolic processes. NPP represents the energy available for consumption by organisms in the next trophic level.
Net primary production (NPP) is lower than gross primary production (GPP) because not all of the energy captured through photosynthesis is available for growth and reproduction. Some of the energy is used by plants for their own metabolic processes, such as respiration. Additionally, a portion of the energy is lost as heat during these metabolic processes. Therefore, NPP represents the amount of energy available for consumption by herbivores and higher trophic levels.
Other factors that can affect net primary productivity (NPP) include nutrient availability, temperature, water availability, sunlight, and disturbance events like fires or deforestation. Nutrient availability, such as nitrogen and phosphorus, is particularly important as they are essential for plant growth and productivity. Climate conditions also play a significant role, with warmer temperatures generally increasing NPP up to a certain point before diminishing returns set in.
Both are vegetation variables. LAI determines the the amount of m2 leaves per m2 whereas GPP is gross production meaning new vegetation produces (plus respiration). In this way there is logically a relationship. On the other hand you can have a plant with a big LAI that is actually very low producing or you can have a plant with a little LAI that is very productive. It all depends on the species...
Gross primary production (GPP) is the rate at which an ecosystem's producers capture and store a given amount of chemical energy as biomass in a given length of time. Some fraction of this fixed energy is used by primary producers for cellular respiration and maintenance of existing tissues (i.e., "growth respiration" and "maintenance respiration").[1] The remaining fixed energy (i.e., mass of photosynthate) is referred to as net primary production (NPP).NPP = GPP - respiration [by plants]Net primary production is the rate at which all the plants in an ecosystem produce net useful chemical energy; it is equal to the difference between the rate at which the plants in an ecosystem produce useful chemical energy (GPP) and the rate at which they use some of that energy during respiration. Some net primary production goes toward growth and reproduction of primary producers, while some is consumed by herbivores.Both gross and net primary production are in units of mass / area / time. In terrestrial ecosystems, mass of carbon per unit area per year (g C/m2/yr) is most often used as the unit of measurement.
I believe a ecosystem with a high NPP would be better than one with a low NPP because than plants produce use full energy, but I am not positive if that is correct.