991 resultados para NH4
Resumo:
7N 1) 1335>> 2) 3) (Lespedeza bicolor)FNDA053.3FNDA>>>FNDA(Amphicarpaea capillipes)(100)(Vicia unijuga)(66.4)FNDA15NN6FNDAFNDA 4) 5) NH4+N03- 6) N0_3TKN;N 7) (FNDA)N(FNDA) 8) ; 9) ; 10) NP()N
Resumo:
(Potentilla reptans L var. sericophylla) ; GS+SOCSTNSTPK+PO43-NH4+NO3-SWCpH1;90.24 m 1.05 mSTP>K+>SOC>pH>STN> NO3-> PO43->SWC> NH4+ STP80.5 m NH4+24.4 cm7 cm Pinus tabulaeformis- 1 8(N, P, K);2 18;;;
Resumo:
Shannon-WienerRipleyK-;Shannon-Wiener q-24Dq1.078-1.997f(a)0.402-1.678a(q)0.909-2.480D-D1[f(-1) D] SHA120-3 50cmSHA50%NO3-NH4+PO4(3-)K+pHSHA8-lOOcmSHA68%NH4+pHPO4(3-)
Resumo:
19791999 1NH4+-NNO3-N2515345 2004530111NO3-NNH4+-N255NO3-NNH4+-N2NO3-N679;8;NH4+-N578691062559255;10525;3/255;
Resumo:
130020 cm24% -CH448.9 29.0 g C m-2 h-11.7CH4 ;N2O47%N2O56.6 38.6 ugN m-2 h-1;;N2O10 2CO25-7CO260%40% CO27.0%2.6%CC 322010 cm14.1%27.9%22.0%;05 cm27.6%38.2%--MB-C/ Org-CLab-C/ Org-CMB-CLab-C CH4CH4CH427%CH4;N2ON2O;N2O1;CO2p<0.05 4pHNH4+CNN46%27%NCO2N2OCH4CO2N2OCO215% 2%
Resumo:
7(Phragmites communis)(Typha angustifolia)(Zizania caduciflora)(Scirpus validus.)(Acorus calamus)(Iris pseudacorus)(Lythrum salicaria) 0.64 m d-1(COD) 7.37 mg L-1(NH4+-N) 1.63 mg L-1(NO3--N )1.41 mg L-1(TN) 4.82 mg L-1(TP) 0.15 mg L-1CODNH4+-NNO3--NTNTP40.4%45.9%62.9%51.6%64.3%;39.6%32.0%65.3%52.1%65.7%;16.5%22.8%34.2%19.8%35.1%NH4+-N NH4+-NNH4+-N CODTNTPTN12.5%13.4%TP16.9%31.0% (Pn)Pn(gs)PngsPngs (LCP)10mol m-2 s-1 (LSP)LSP1476.3mol m-2 s-1>1140.0mol m-2 s-1>753.7mol m-2 s-1>751.7mol m-2 s-1>640.7mol m-2 s-1>567.3mol m-2 s-1>479.0mol m-2 s-17CO2CO247.1mol mol-1>28.4mol mol-1>23.7mol mol-1>16.8mol mol-1>16.7mol mol-1>15.2mol mol-1>14.8mol mol-1CO2 Fv/FmFv/Fm0.8168>0.8348>0.8262>0.8198>0.8168>0.8040>0.7930PS7ab ()0.26-6.65 kg m-2 6.09-93.96 g m-2;0.51-8.95 g m-20.6-17.1%1.4-40.5%
Resumo:
5050.00, 1.33, 2.67, 4.00, 5.33 /2005200616NCmicNmicRmic15N 11.53 mg N l11.77 kg N ha1m18%1.01-1.43 g N kg1110-201.58 NH4+-N1.71-9.45 g N g1NO3-N0.27-11.21 g N g12.69-14.57 g N g10.49-2.6%;2.49-8.66 g N g10.35-1.21%2005200640.61-0.27 g N g1d172.674.00 /5.33 /0.32-0.16 g N g1200520062005200620062005 N2O0.33-6.21g N kg1 d10.42-11.28 g N kg1 d12005N2ON2O5.33 /4N2O20062006 0.88-3.52 g N ha1d15200520062005200520062006 Cmic13.97-350.45 g C g11.58-8.35%CmicCNNN2OCmicNmic0.41-2.74%NmicNNCNmicRmic5RmicRmicCCCCNNRmic 15N15N15N15N 10.44-17.19 g C kg10.54-0.82 g N kg140-5010446.94-507.01 g C kg1;4.58-7.18 g N kg1
Resumo:
Sefid-Rood River Estuary (SRE) is the most important riverine ecosystem in the south Caspian Sea along the Iranian coast lines. The aim of this study was to examine spatial and temporal variability in Phytoplankton and Zooplankton abundance and diversity in SRE. Variability of Chlorophyll a and inorganic nutrient concentration were determined during a year (November 2004 October 2005) in five sampling stations. Primary and secondry production were determined during a year. Total chlorophyll a concentration during the investigation ranged between zero to 22.8 gl-1 and the highest levels were consistently recorded during summer and the lowest during winter with a annual mean concentration 4.48 gl-1. Nutrient concentration was seasonally related to river flow with annual mean concentration: NO2 0.050.2 mgl-1, NO3 1.130.57 mgl-1, NH4 0.510.66 mgl-1, total phosphate 0.130.1mgl-1 and SiO2 5.681.91 mgl-1. Bacillariophytes, Cyanophytes, Chlorophytes, Pyrophytes and Euglenophytes were the dominant phytoplankton groups in this shallow and turbid estuary. The diversity and abundance of phytoplankton had a seasonal pattern while Diatomas and Chrysophytes were dominant throughout the year but Cyanophytes observed only during the summer. Zooplankton community structure was dominated by copepods which 68% of the total zooplankton. In the winter and summer seasons two increased in the number of zooplankton community and usually toward the sea had occurred. Zooplankton also showed a significant spatial and temporal variation. The high turbidity and temperature prime characteristics of SRE seem to be determining factors acting directly on phytoplankton and zooplankton temporal variability and nutrient fluctuations. Everywhere in this estuary nutrients appeared to be in excess of algal requirement and did not influence a phytoplankton and zooplankton composition. Also there was a positive correlation between chlorophyll a and temperature and a negative one with DIN and TP. Primary production determined in this estuary by dark and light butter method and G.P.P. 38.2734.12 mgcm-2h-1 and N,PP 201.6289.9 mgcm-2d-1. secondry production determined 15/128 mgc/m3/year. Everywhere in this estuary nutrients appeared to be in excess to algal requirement and did not influence in Chl. a and primary production. The most important factor influence on Chl. a was water temperature.
Resumo:
Growing of fish in cages is currently practiced in Uganda and was first introduced in northern Lake Victoria in 2010. An environment monitoring study was undertaken at Source of the Nile, a private cage fish farm, in Napoleon gulf, northern Lake Victoria. In-situ measurements of key environmental (temperature, dissolved oxygen, pH and conductivity) and biological (algae, zooplankton, macro-benthos) variables were made at three transects: Transect 1- the site with fish cages (WC); transect 2- upstream of the fish cages (USC-control) and Transect 3- downstream of the cages (DSC). Upstream and Downstream sites were located approximately 1.0 km from the fish cages. Environment parameters varied spatially and temporally but were generally within safe ranges for freshwater habitats. Higher concentrations of SRP (0.015-0.112 Mg/L) occurred at USC during February, September and at DSC in November; NO2-N (0.217- 0.042 mg/L) at USC and DSC in February and November; NH4-N (0.0054- 0.065 Mg/L) at WC and DSC in February, May and November. Algal bio-volumes were significantly higher at WC (F (2,780)=4.619; P=0.010). Zooplankton species numbers were consistently lower at WC with a significant difference compared to the control site (P=0.032). Macro-benthos abundance was consistently higher at the site with cages where mollusks and low-oxygen and pollution-tolerant chironomids were the dominant group. Higher algal biomass, concentration of low-oxygen/pollution-tolerant macro-benthos and depressed zooplankton diversity at WC suggested impacts from the fish cages on aquatic biota.
Resumo:
,(50100150/m2)(Hydrilla verticillata):(DO)(Eh),DO3.95mg/L10.42mg/L;Eh58.6—109.4mV,TP38.9%—57.1%;NH4+-N90.2%;TN
Resumo:
7PCR-DGGE,DNA:(1)PCR-DGGE104,58,46,87.9%82.6%(2),TP(0.10mg/L),TN(0.34mg/L),,(63.00cm);NO3-NNH4-NpHDOCOD
Resumo:
(Eh):Eh402~585-87~-130308~432mV,A//B3A,BOD5CODCrNH4+-N43.0%48.4%54.1%,NH4+-N79%;;B
Resumo:
200564.(5-10cm)NO3--N,NH4+-N,.NH4+-N(0-5cm)(>10cm),,.,NH4+-N,NO3--N,:
