Estimation of symbiotic dinitrogen fixation in alder forest by the method based on natural15N abundance

Domenach, Anne-Marie; Kurdali, F.; Bardin, R.

doi:10.1007/bf02232790

Cited by 85 publications

(40 citation statements)

References 14 publications

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“…Our result is similar with finding that plants under cold stress have low foliar δ 15 N values (Kohls et al, 1994). A study reported that the plants under slow growing rate have large nitrogen isotopic fractionation (Domenach et al, 1989). The metabolism of plants usually slows down in cold season and consequently, the nutrient uptake evidently decreases.…”

Section: N Values During Growing Time and Its Influencing Factorssupporting

confidence: 92%

Stable Nitrogen Isotopic Changes in Winter Wheat (<i>Triticum aestivum</i> L.) Induced by its Growth Temperature

Wang¹,

Liu²,

Hao³

2017

American Journal of Agricultural and Biological Sciences

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The nitrogen dynamics of plants can be quantified using the variation in their δ 15 N level. This reveals details of plant physiological characteristics and the relationship between plants and their growth conditions. To better understand plant nitrogen dynamics and the effects of external temperature changes on their nitrogen isotopic composition, we investigated the δ 15 N characteristics in Triticum aestivum and its mother soils during the plant's life cycle. We found that under field conditions, the plant's leaves and roots δ 15 N significantly changed. The δ 15 N values in Triticum aestivum changed from -1.6‰ to -8.1‰ for leaves and from -2.0‰ to -8.8‰ for roots, respectively. δ15 N values for both, the leaves and roots were positively correlated with temperature. However, the foliar δ 15 N corresponded more strongly to air temperature, while the root δ 15 N corresponded to soil temperature. δ 15 N values of leaf and root both changed around 0.2‰ in response to a 1 degree change in temperature. Plant roots or shoot material cannot reflect the whole plant δ 15 N values due to a considerable difference between the δ 15 N values of root and leaf. However, the variations in leaf and root δ 15 N provide useful proxies to trace seasonal plant nitrogen cycles.

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Section: N Values During Growing Time and Its Influencing Factorssupporting

confidence: 92%

Stable Nitrogen Isotopic Changes in Winter Wheat (<i>Triticum aestivum</i> L.) Induced by its Growth Temperature

Wang¹,

Liu²,

Hao³

2017

American Journal of Agricultural and Biological Sciences

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“…Domenach et al 1989, Roggy et al 1999, Kreibich et al 2006. Samples from the vá rzea of the Tarapoto Lakes complex did not include legume species, and only three legume species were sampled in the igapó of the lower Apaporis River.…”

Section: Interspecific Isotopic Variationmentioning

confidence: 99%

Isotopic variation among Amazonian floodplain woody plants and implications for food-web research

Correa

Winemiller

2016

Biota Neotrop.

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Isotopic variation within food sources adds uncertainty to models intended to reconstruct trophic pathways. Understanding this variation is pivotal for planning sampling protocols for food-web research. This study investigates natural variation in C and N stable isotopes among plant species in two western Amazon flooded forests with contrasting watershed biogeochemistry (white-water vá rzea-forest and black-water igapó -forest 13 C values of leaves and fruits were not statistically different between the two sites despite regional differences in biogeochemistry and floristic composition. In contrast, mean d 15 N of leaves and fruits were significantly lower at the vá rzea than at the igapó site. The high floristic diversity of both forests was reflected in large within-site interspecific variation in both d 13 C and d 15 N. Paired comparisons revealed that d 13 C of wood and fruits and d 15 N of fruits were generally greater than values obtained for leaves from the same plant. The predicted contribution of different carbon sources to the consumer biomass changed between models as a function of source variability. We discuss implications of source variation for designing sampling protocols, interpreting isotopic signatures, and establishing trophic links between plants and consumers. Our findings highlight the importance of in situ sampling to establish reliable primary production baselines for local food webs. Keywords: Stable isotopes, Igapó, Várzea, Fruits, Food web, Mixing model. CORREA, S.B., WINEMILLER, K., CÁ RDENAS, D. Variación isotópica entre plantas leñosas de planicies de inundación del Amazonas e implicaciones para la investigación de red tróficas. Biota Neotropica. 16(2): e20150078. http://dx.doi.org/10.1590/1676-0611-BN-2015-0078Resumo: La variació n isotó pica dentro de fuentes alimenticias añ ade incertidumbre a los modelos destinados a reconstruir redes tró ficas. La comprensió n de esta variació n es fundamental para la planificació n de protocolos de muestreo para la investigació n de redes alimentarias. Este estudio investiga la variació n natural en isó topos estables de C y N entre especies de plantas en dos bosques inundables de la Amazonía noroccidental con biogeoquímica de cuenca contrastantes (vá rzea-bosques de aguas blanca e igapó -bosques de aguas negras). Nuestros objetivos fueron comparar las señ ales isotó picas de d 13 C y d 15 N de hojas y frutos entre bosques; evaluar la magnitud de la variació n en la composició n isotó pica de hojas (vá rzea: 28 spp., Igapó : 10 spp.) y frutas (vá rzea:. 22 spp, igapó : 22 spp.) a nivel local; determinar la variació n en la composició n isotó pica de madera, hojas y frutas dentro de una planta; y evaluar si la variació n inter-específica en los valores de d 13 C y d 15 N ejerce influencia sobre los resultados de modelos que predicen la contribució n de fuentes de alimentos terrestres a un consumidor acuá tico. Los valores promedio de d 13 C en hojas y frutos no fueron estadísticamente diferentes entre los dos tipos de bosque a pesar ...

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“…Plants depending on soil nitrogen have positive 6 ~SN values, rather close to those of soil nitrogen, although in temperate and cooler areas, some plants show very negative 6 ~SN values (Domenach et al, 1989;Virginia et al, 1986). In leguminous plants, large fractions of plant nitrogen are derived from N 2, fixed through biological nitrogen fixation.…”

Section: Introductionmentioning

confidence: 99%

Natural abundance of 15N in tropical plants with emphasis on tree legumes

Yoneyama

Muraoka

Murakami³

et al. 1993

Plant Soil

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Natural abundance of tSN (6 tSN) of leaves harvested from tropical plants in Brazil and Thailand was analyzed. The 8 ~SN values of non-Nz-fixing trees in Brazil were +4.5 -+ 1.9%o, which is lower than those of soil nitrogen (+8.0-+2.2%0). In contrast, mimosa and kudzu had very low 6 ~SN values ( -1 . 4 -+ 0 . 5 % @ The t5 1-~N values of Panicum maximum and leguminous trees, except Leucaena leucocephala, were similar to those of non-N2-fixing trees, suggesting that the contribution of fixed N in these plants is negligible. The 6 15N values of non-N2-fixing trees in Thailand were +4.9 +_ 2.0%0. Leucaena leucocephala, Sesbania grandiflora, Casuarina spp. and Cycas spp. had low 6 tSN values, close to the value of atmospheric N 2 (0%e), pointing to a major contribution of N 2 fixation in these plants. Cassia spp. and Tamarindus indica had high 6 15N values, which confirms that these species are non-nodulating legumes. The 6 ~SN values of Acacia spp. and Gliricidia sepium and other potentially nodulating tree legumes were, on average, slightly lower than those of non-N2-fixing trees, indicating a small contribution of N 2 fixation in these legumes.

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Estimation of symbiotic dinitrogen fixation in alder forest by the method based on natural15N abundance

Cited by 85 publications

References 14 publications

Stable Nitrogen Isotopic Changes in Winter Wheat (<i>Triticum aestivum</i> L.) Induced by its Growth Temperature

Stable Nitrogen Isotopic Changes in Winter Wheat (<i>Triticum aestivum</i> L.) Induced by its Growth Temperature

Isotopic variation among Amazonian floodplain woody plants and implications for food-web research

Natural abundance of 15N in tropical plants with emphasis on tree legumes

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