Short‐term effects of elevated precipitation and nitrogen on soil fertility and plant growth in a Neotropical savanna

Copeland, Stella M.; Bruna, Emilio M.; Silva, Laura V. Barbosa; Mack, Michelle C.; Vasconcelos, Heraldo L.

doi:10.1890/es11-00305.1

Cited by 20 publications

(11 citation statements)

References 89 publications

(105 reference statements)

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“…Label abbreviations mean: 'c4'native C 4 grasses; 'c3' -native C 3 grasses; 'forbs' -native forbs; 'inv'invasive C 4 grasses also appears to be the case in our study sites in Cerrado vegetation, where biomass only increased in response to treatments containing some combination of nutrients. Thus, our results do not support the usual assumption that plant growth in Cerrado is limited mainly by a shortage of P (Copeland et al 2012;Olde Venterink 2011).…”

Section: Discussioncontrasting

confidence: 99%

Native and alien herbaceous plants in the Brazilian Cerrado are (co-)limited by different nutrients

et al. 2015

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Background and aims The diverse flora of the Brazilian Cerrado is threatened by agricultural expansion, nutrient enrichment and invasion of alien plants. We performed a fertilization experiment to investigate the nature of nutrient limitation in Cerrado vegetation, and evaluate whether native and alien invasive species are limited by the same or different nutrients. Methods We applied various combinations of nutrients (phosphorus (P), nitrogen (N), and a mixture of other macro-and micro-nutrients ('cations treatment')) to six types of Cerrado vegetation. We then studied over a 3year period how these treatments affected the aboveground biomass of native forbs, native C 3 and C 4 grasses, and invasive C 4 grasses. ResultsThe full nutrient treatment (N+P+ 'cations') significantly increased total community biomass across our sites, but P alone had no effect. The nutrient treatments also affected the relative abundance of functional plant groups in the six vegetation types. P addition, either alone or in combination with other nutrients, increased the biomass of alien C 4 grasses, where present, whereas the cations treatment stimulated growth of the native C 4 grasses. Addition of N+P reduced the biomass of native C 3 grasses. Conclusions Our results indicate co-limitation by several nutrients, including P, perhaps N, and at least one other nutrient. Further research is needed to determine what the other nutrient (or nutrients) may be. Native and invasive species appear to be limited by different nutrients, with P alone stimulating growth of African C 4 grasses. This should be considered in managing both natural and invaded communities.

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Section: Discussioncontrasting

confidence: 99%

Native and alien herbaceous plants in the Brazilian Cerrado are (co-)limited by different nutrients

et al. 2015

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“…The relationships between precipitation, temperature and accumulation of soil organic matter have been well documented (Ambebe and Dang, 2009;Copeland et al, 2012;He et al, 2012;Chang et al, 2014). Our results suggested that SOC varied significantly with changes of MAP.…”

Section: Effects Of Annual Precipitation and Temperature On Soil Nutrsupporting

confidence: 69%

Effects of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze-Yellow rivers, Tibetan Plateau of China

Wang

Sun

et al. 2016

J. Arid Land

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Improving our knowledge of the effects of environmental factors (e.g. soil conditions, precipitation and temperature) on belowground biomass in an alpine grassland is essential for understanding the consequences of carbon storage in this biome. The object of this study is to investigate the relative importance of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze and Yellow rivers, Tibetan Plateau. Soil organic carbon (SOC), total nitrogen (TN) and total phosphorous (TP) contents and belowground biomass were measured at 22 sampling sites across an alpine meadow on the Tibetan Plateau. We analyzed the data by using the redundancy analysis to determine the main environmental factors affecting the belowground biomass and the contribution of each factor. The results showed that SOC, TN and TP were the main factors that influenced belowground biomass, and the contribution of SOC, TN and TP on biomass was in the range of 47.87%-72.06% at soil depths of 0-30 cm. Moreover, the combined contribution of annual mean temperature (AMT) and mean annual precipitation (MAP) on belowground biomass ranged from 0.92% to 4.10%. A potential mechanism for the differences in belowground biomass was caused by the variations in soil nitrogen and phosphorous, which were coupled with SOC. A significant correlation was observed between MAP and soil nutrients (SOC, TN and TP) at the soil depth of 0-10 cm (P<0.05). We concluded that precipitation is an important driving force in regulating ecosystem functioning as reflected in variations of soil nutrients (SOC, TN and TP) and dynamics of belowground biomass in alpine grassland ecosystems.Keywords: belowground biomass; soil organic carbon; soil nitrogen and phosphorus; climate factor; alpine meadow; Tibetan Plateau Citation: WANG Haiming, SUN Jian, LI Weipeng, WU Jianbo, CHEN Youjun, LIU Wenhui. 2016. Effects of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze-Yellow rivers,

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“…Several native plant communities are limited by one or more than two nutrients, and phosphorus is one of the most limiting nutrient in such communities (Davidson & Howarth, 2007;Elser et al, 2007;Harpole et al, 2011;Townsend et al, 2011;Fay et al, 2015). Cerrado plants are thought to be primarily limited by phosphorus (Olde Venterink, 2011;Copeland et al, 2012). This seems to be the case when observing that plant biomass increased as well as phosphorus concentration in area 2,3,4).…”

Section: Resultsmentioning

confidence: 99%

Response of vegetation to sheep dung addition in a degraded Cerrado area

Teixeira

Rezende

Lannes

2019

Rev. bras. eng. agríc. ambient.

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Cerrado is the second largest biome in Brazil and is classified as a biodiversity hotspot. The establishment of hydroelectric power stations in Brazil originated degraded areas due to the removal of soil for construction of dams, in which native vegetation sometimes fails to reestablish due to the bad soil conditions. Sheep excrete most of the nutrients they ingest, such as phosphorus, calcium, potassium and nitrogen. This study aimed at investigating whether sheep dung contributes to the improvement of soil quality and stimulates the process of ecological succession in areas affected by the construction of the hydroelectric power station of Ilha Solteira. Four areas were selected, located at the Experimental Farm of Unesp Ilha Solteira/SP, and ten plots of 1 m2 each were established. From October 2014 to December 2015, five replicates received 150 g fresh sheep dung every 15 days. In December 2015 soil sample from top 0.10 m was collected for the determination of soil attributes. Aboveground biomass was also collected, separated into four functional groups, oven-dried and weighed. Data were analysed to check the effect of dung addition upon soil and vegetation variables. Dung addition stimulated the development of several functional groups and changed soil nutrient concentrations in all four studied areas.

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Short‐term effects of elevated precipitation and nitrogen on soil fertility and plant growth in a Neotropical savanna

Cited by 20 publications

References 89 publications

Native and alien herbaceous plants in the Brazilian Cerrado are (co-)limited by different nutrients

Native and alien herbaceous plants in the Brazilian Cerrado are (co-)limited by different nutrients

Effects of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze-Yellow rivers, Tibetan Plateau of China

Response of vegetation to sheep dung addition in a degraded Cerrado area

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