About: Nutrient enrichment in tropical wetlands: shifts from autotrophic to heterotrophic nitrogen fixation

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We used established long-term experimental P-amended plots in freshwater marshes of northern Belize to determine the impact of P input on nitrogen (N) fixation. Marshes with different conductivities and sulfate concentrations were selected to elucidate the effect of salinity and the contribution of sulfur reducing bacteria to the overall N fixation. Rates of N fixation in sediment, roots, and cyanobacterial mats was measured in laboratory incubation experiments (acetylene reduction assay calibrated by 15N2 reduction assay) with and without the addition of sodium molybdate (sulfur reducing bacteria inhibitor). P has increased macrophyte primary production significantly, which led to the rapid elimination of cyanobacterial mats and the elimination of autotrophic N fixation. P addition enhanced heterotrophic N fixation in both the sediments and rhizosphere due primarily to increased C supply to the sediment. When expressed on a dry weight basis, root associated N fixation was higher than sediment N fixat We used established long-term experimental P-amended plots in freshwater marshes of northern Belize to determine the impact of P input on nitrogen (N) fixation. Marshes with different conductivities and sulfate concentrations were selected to elucidate the effect of salinity and the contribution of sulfur reducing bacteria to the overall N fixation. Rates of N fixation in sediment, roots, and cyanobacterial mats was measured in laboratory incubation experiments (acetylene reduction assay calibrated by 15N2 reduction assay) with and without the addition of sodium molybdate (sulfur reducing bacteria inhibitor). P has increased macrophyte primary production significantly, which led to the rapid elimination of cyanobacterial mats and the elimination of autotrophic N fixation. P addition enhanced heterotrophic N fixation in both the sediments and rhizosphere due primarily to increased C supply to the sediment. When expressed on a dry weight basis, root associated N fixation was higher than sediment N fixat (en)
Title	Nutrient enrichment in tropical wetlands: shifts from autotrophic to heterotrophic nitrogen fixation Nutrient enrichment in tropical wetlands: shifts from autotrophic to heterotrophic nitrogen fixation (en)
skos:prefLabel	Nutrient enrichment in tropical wetlands: shifts from autotrophic to heterotrophic nitrogen fixation Nutrient enrichment in tropical wetlands: shifts from autotrophic to heterotrophic nitrogen fixation (en)
skos:notation	RIV/60076658:12310/10:00011784!RIV11-MSM-12310___
http://linked.open...avai/riv/aktivita	I Z
http://linked.open...avai/riv/aktivity	I, Z(MSM6007665801)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Šantrůčková, Hana
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Jihočeská univerzita v Českých Budějovicích / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	275739
http://linked.open...ai/riv/idVysledku	RIV/60076658:12310/10:00011784
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	15N - N budget - P limitation - Rhizosphere - Sulfur reducing diazotrophs 15N; N budget; P limitation; Rhizosphere; Sulfur reducing diazotrophs (en)
http://linked.open.../riv/klicoveSlovo	15N Rhizosphere N budget P limitation Sulfur reducing diazotrophs
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[8A4DB180B813]
http://linked.open...i/riv/nazevZdroje	Biogeochemistry
http://linked.open...in/vavai/riv/obor	DF
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	101
http://linked.open...iv/tvurceVysledku	Šantrůčková, Hana Rejmánková, Eliška Pivničková, Barbora Snyder, Jenise M.
http://linked.open...ain/vavai/riv/wos	000285096700023
http://linked.open...n/vavai/riv/zamer	EKOLOGICKÉ, EVOLUČNÍ A EXPERIMENTÁLNĚ BIOLOGICKÉ PŘÍSTUPY KE STUDIU VZNIKU A VÝZNAMU BIODIVERZITY
issn	0168-2563
number of pages	16 (xsd:int)
http://localhost/t...ganizacniJednotka	12310
is http://linked.open...avai/riv/vysledek of	Nutrient enrichment in tropical wetlands: shifts from autotrophic to heterotrophic nitrogen fixation Nutrient enrichment in tropical wetlands: shifts from autotrophic to heterotrophic nitrogen fixation Nutrient enrichment in tropical wetlands: shifts from autotrophic to heterotrophic nitrogen fixation

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