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15N natural abundance in forest and pasture soils of the brazilian amazon basin / M.C.* Piccolo (1996)
Titre : 15N natural abundance in forest and pasture soils of the brazilian amazon basin Type de document : texte imprimé Auteurs : M.C.* Piccolo ; C.** Neill ; J.M.** Melillo ; C.C.* Cerri ; P.A.** Steudler Editeur : Kluwer academic publishers Année de publication : 1996 Importance : 2 tabl., 10 graph., 33 réf.-p. 249-258 Langues : Anglais (eng) Catégories : Autres descripteurs
NITROGEN ; NITROGEN FIXATION ; STABLE ISOTOPES ; TROPICAL FOREST ; TROPICAL PASTURE ; FIXATION ; ISOTOPE STABLE ; TROPIQUE
Thésaurus Agrovoc
Brésil ; Azote ; PâturageRésumé : The natural abundance of 15N was examined in soil profiles from forests and pastures of the Brazilian Amazon Basin to compare tropical forests on a variety of soil types and to investigate changes in the sources of nitrogen to soils following deforestation for cattle ranching. Six sites in the state of Randönia, two sites in Para and one in Amazonas were studied. All sites except on were chronosequences and contained native forest and one or more pastures ranging from 2 to 27 years old. Forest soil 15N values to a depth of 1 m ranged from 8%oo to 23%oo and were higher than values typically found in temperate forests. A general pattern of increasing 15N values with depth near the soil surface was broadly similar to patterns in other forests but a decrease in 15N values in many forest profiles between 20 and 40 cm suggests that illuviation of 15N depleted nitrate may influence total soil 15N values in deeper soil where total N concentrations are low. In four
chronosequences in Randônia, the 15N values of surface soil from pastures were lower than in the original forest and 15N values increasingly depleted in older pastures. Inputs of atmospheric N by dinitrogen fixation could be an important N source in these pastures. Other pastures in Amazonas and Para an Randônia showed no consistent change from forest values. The extent of fractionation that leads to 15N enrichment in soils was broadly similar over a wide range of soil textures and indicated that similar processes control N fractionation and loss under tropical forest over a broad geographic region. Forest 15N profiles were consistent with conceptual models that explain enrichment of soil 15N values by selective loss of 14N during nitrification and denitrification. "(Résumé des auteurs)".Type de document : Tiré à part Permalien de la notice : https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=149602 15N natural abundance in forest and pasture soils of the brazilian amazon basin [texte imprimé] / M.C.* Piccolo ; C.** Neill ; J.M.** Melillo ; C.C.* Cerri ; P.A.** Steudler . - [S.l.] : Kluwer academic publishers, 1996 . - 2 tabl., 10 graph., 33 réf.-p. 249-258.
Langues : Anglais (eng)
Catégories : Autres descripteurs
NITROGEN ; NITROGEN FIXATION ; STABLE ISOTOPES ; TROPICAL FOREST ; TROPICAL PASTURE ; FIXATION ; ISOTOPE STABLE ; TROPIQUE
Thésaurus Agrovoc
Brésil ; Azote ; PâturageRésumé : The natural abundance of 15N was examined in soil profiles from forests and pastures of the Brazilian Amazon Basin to compare tropical forests on a variety of soil types and to investigate changes in the sources of nitrogen to soils following deforestation for cattle ranching. Six sites in the state of Randönia, two sites in Para and one in Amazonas were studied. All sites except on were chronosequences and contained native forest and one or more pastures ranging from 2 to 27 years old. Forest soil 15N values to a depth of 1 m ranged from 8%oo to 23%oo and were higher than values typically found in temperate forests. A general pattern of increasing 15N values with depth near the soil surface was broadly similar to patterns in other forests but a decrease in 15N values in many forest profiles between 20 and 40 cm suggests that illuviation of 15N depleted nitrate may influence total soil 15N values in deeper soil where total N concentrations are low. In four
chronosequences in Randônia, the 15N values of surface soil from pastures were lower than in the original forest and 15N values increasingly depleted in older pastures. Inputs of atmospheric N by dinitrogen fixation could be an important N source in these pastures. Other pastures in Amazonas and Para an Randônia showed no consistent change from forest values. The extent of fractionation that leads to 15N enrichment in soils was broadly similar over a wide range of soil textures and indicated that similar processes control N fractionation and loss under tropical forest over a broad geographic region. Forest 15N profiles were consistent with conceptual models that explain enrichment of soil 15N values by selective loss of 14N during nitrification and denitrification. "(Résumé des auteurs)".Type de document : Tiré à part Permalien de la notice : https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=149602 Réservation
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Localisation Emplacement Section Cote Support Code-barres Disponibilité Kourou AgroParisTech-Kourou SI TP6549 Papier KOU-06549 Empruntable Base cation supply in spruce and beech ecosystems of the strengbach catchment (Vosges Mountains, nord est France) / J. Fichter (1998)
Titre : Base cation supply in spruce and beech ecosystems of the strengbach catchment (Vosges Mountains, nord est France) Type de document : texte imprimé Auteurs : J. Fichter ; Etienne Dambrine ; MP. Turpault ; Jacques Ranger Editeur : Kluwer academic publishers Année de publication : 1998 Collection : Water, Air, and Soil Pollution num. 104 Importance : p. 125-148, 2 ill., 7 tabl., nb réf. Langues : Anglais (eng) Catégories : Autres descripteurs
FOREST SOIL ; MINERAL SUPPLY ; MODELLING ; SUSTAINABILITY ; WEATHERING RATEType de document : Tiré à part Permalien de la notice : https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=150632 Base cation supply in spruce and beech ecosystems of the strengbach catchment (Vosges Mountains, nord est France) [texte imprimé] / J. Fichter ; Etienne Dambrine ; MP. Turpault ; Jacques Ranger . - [S.l.] : Kluwer academic publishers, 1998 . - p. 125-148, 2 ill., 7 tabl., nb réf.. - (Water, Air, and Soil Pollution; 104) .
Langues : Anglais (eng)
Catégories : Autres descripteurs
FOREST SOIL ; MINERAL SUPPLY ; MODELLING ; SUSTAINABILITY ; WEATHERING RATEType de document : Tiré à part Permalien de la notice : https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=150632 Réservation
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Localisation Emplacement Section Cote Support Code-barres Disponibilité Kourou AgroParisTech-Kourou SI TP17566 Papier KOU-17566 Empruntable Biomass and primary production of herbaceous plant communities in the amazon floodplain / Junk,W. J. (1996)
Titre : Biomass and primary production of herbaceous plant communities in the amazon floodplain Type de document : texte imprimé Auteurs : Junk,W. J. ; T.F. Piedade Editeur : Kluwer academic publishers Année de publication : 1996 Importance : graph., 1 carte, 10 réf.-p. 155-162 Langues : Anglais (eng) Catégories : Autres descripteurs
PRIMARY PRODUCTION ; PASPALUM REPENS ; LUZIOLA SPRUCEANAN ; HYMENACHNE AMPLEXICAULIS ; SALVINIA AURICULATA ; PISTIA STRATIOTES ; LUDWIGIA DENSIFLORA
Thésaurus Agrovoc
Amazonie ; Paspalum fasciculatum ; Oryza perennis ; Eichhornia crassipes ; Echinochloa polystachya ; Biomasse ; Végétation ; Mangrove
Ancienne liste Géo
AMAZONIEType de document : Tiré à part Permalien de la notice : https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=149401 Biomass and primary production of herbaceous plant communities in the amazon floodplain [texte imprimé] / Junk,W. J. ; T.F. Piedade . - [S.l.] : Kluwer academic publishers, 1996 . - graph., 1 carte, 10 réf.-p. 155-162.
Langues : Anglais (eng)
Catégories : Autres descripteurs
PRIMARY PRODUCTION ; PASPALUM REPENS ; LUZIOLA SPRUCEANAN ; HYMENACHNE AMPLEXICAULIS ; SALVINIA AURICULATA ; PISTIA STRATIOTES ; LUDWIGIA DENSIFLORA
Thésaurus Agrovoc
Amazonie ; Paspalum fasciculatum ; Oryza perennis ; Eichhornia crassipes ; Echinochloa polystachya ; Biomasse ; Végétation ; Mangrove
Ancienne liste Géo
AMAZONIEType de document : Tiré à part Permalien de la notice : https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=149401 Réservation
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Localisation Emplacement Section Cote Support Code-barres Disponibilité Kourou AgroParisTech-Kourou SI TP16060 Papier KOU-16060 Empruntable Biomass Production by Fast Growing Trees - Internal and external cycling of nutrients in forest stands / H. G. Miller (1989)
Titre : Biomass Production by Fast Growing Trees - Internal and external cycling of nutrients in forest stands Type de document : texte imprimé Auteurs : H. G. Miller Editeur : Kluwer academic publishers Année de publication : 1989 Importance : tabl., graph., 20 réf.-73-80 p. Langues : Anglais (eng) Catégories : Thésaurus Agrovoc
Arbre forestier ; Substance nutritive ; Cycle biogéochimiqueType de document : Tiré à part Permalien de la notice : https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=143250 Biomass Production by Fast Growing Trees - Internal and external cycling of nutrients in forest stands [texte imprimé] / H. G. Miller . - [S.l.] : Kluwer academic publishers, 1989 . - tabl., graph., 20 réf.-73-80 p.
Langues : Anglais (eng)
Catégories : Thésaurus Agrovoc
Arbre forestier ; Substance nutritive ; Cycle biogéochimiqueType de document : Tiré à part Permalien de la notice : https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=143250 Réservation
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Localisation Emplacement Section Cote Support Code-barres Disponibilité Kourou AgroParisTech-Kourou SI TP13362 Papier KOU-13362 Empruntable Can botanical collections assist in a national protected area strategy in Guyana ? / H. Ter Steege (2000)
Titre : Can botanical collections assist in a national protected area strategy in Guyana ? Type de document : texte imprimé Auteurs : H. Ter Steege ; M. Janse Jacobs ; V.K. Datadin Editeur : Kluwer academic publishers Année de publication : 2000 Collection : Biodiversity and Conservation num. 9 Importance : p. 215-240., 1 graph., 2 tabl., 5 cartes., nb réf. Langues : Anglais (eng) Catégories : Autres descripteurs
BOTANICAL COLLECTION ; FOREST REGIONS ; Guyane ; PLANT DIVERSITY ; PROTECTED AREAType de document : Tiré à part Permalien de la notice : https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=150704 Can botanical collections assist in a national protected area strategy in Guyana ? [texte imprimé] / H. Ter Steege ; M. Janse Jacobs ; V.K. Datadin . - [S.l.] : Kluwer academic publishers, 2000 . - p. 215-240., 1 graph., 2 tabl., 5 cartes., nb réf.. - (Biodiversity and Conservation; 9) .
Langues : Anglais (eng)
Catégories : Autres descripteurs
BOTANICAL COLLECTION ; FOREST REGIONS ; Guyane ; PLANT DIVERSITY ; PROTECTED AREAType de document : Tiré à part Permalien de la notice : https://infodoc.agroparistech.fr/index.php?lvl=notice_display&id=150704 Réservation
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