Influence of stemflow and throughfall from common oak (Quercusrobur) on soil chemistry and vegetation patterns

1991 ◽  
Vol 21 (6) ◽  
pp. 917-924 ◽  
Author(s):  
Thomas Andersson
Keyword(s):  
Soil Chemistry ◽  
Soil Nutrient ◽  
Calcium Content ◽  
Nutrient Addition ◽  
Vegetation Patterns ◽  
Nutrient Input ◽  
Swedish West Coast ◽  
Sea Bottom ◽  
High Base ◽  
Common Oak

Vernal herb vegetation patterns and soil chemistry beneath common oak (Quercusrobur L.) on a former sea bottom with occurrences of calcareous clay on the Swedish west coast were investigated in relation to nutrient addition from bark, stemflow, and throughfall. Nutrient input from bark litter played a negligible role in differentiating soil nutrient and vegetation gradients. Instead, nutrient addition via stemflow seemed to be the main reason for considerably higher pH and calcium content near the stems, and for an altered herb composition, mainly consisting of Mercurialisperennis L. and Hepaticanobilis Mill., in the stem zone of many oaks. The effects of stemflow were not observed around thin-stemmed oaks, nor around oaks growing on soils with high base saturation. This suggests that old, broad-stemmed oaks with deep root systems, reaching more fertile, calcium-rich layers, can redistribute calcium via stemflow, thereby strongly affecting originally nutrient-poor topsoil, and as a consequence, also can regulate the herb composition near the stem.

The effects of tree cover and soil nutrient addition on native herbaceous richness in a neotropical savanna

Biotropica ◽  
2021 ◽  
Author(s):  
Klécia Gili Massi ◽  
Chesterton Ulysses Orlando Eugênio ◽  
Augusto César Franco ◽  
William A. Hoffmann
Keyword(s):  
Soil Nutrient ◽  
Nutrient Addition ◽  
Tree Cover ◽  
Neotropical Savanna

Calcium nutrition of the tomato as influenced by total salts and ammonium nutrition

1971 ◽  
Vol 11 (52) ◽  
pp. 562 ◽  
Author(s):  
RE Barke ◽  
RC Menary
Keyword(s):  
Ammonium Sulphate ◽  
Soil Nutrient ◽  
Calcium Content ◽  
Field Trials ◽  
Calcium Deficiency ◽  
Ammonia Nitrogen ◽  
Physiological Disorder ◽  
Factors Affecting ◽  
Blossom End Rot ◽  
Whole Plants

Calcium deficiency in tomatoes was induced by adding ammonia nitrogen to the rooting medium. Ammonia was found to inhibit the absorption of calcium by the plant. When total soil nutrient concentration was varied, but the ratio of calcium to other ions held constant, blossom-end rot incidence was inversely related to the calcium level in fruits but was not necessarily associated with low calcium levels in leaves or whole plants. In the presence of high total salts, the incidence of the disorder could not be explained by a reduction in calcium content of whole plants and factors affecting distribution of the calcium within the plant were involved. The physiological disorder pith rot is described and evidence presented suggesting it is caused by a deficiency of calcium. Ammonia increased the incidence of the disorder but was not essential for its occurrence. In field trials on a red loam soil, ammonium sulphate reduced the pH values from 6.0 to 4.7, which prevented nitrification and induced pith rot and blossom-end rot through an accumulation of ammonia nitrogen. Calcium foliar sprays were able to offset yield reductions that were induced by moderate fertilizing with ammonium sulphate even where blossom-end rot did not occur. High total plant calcium was associated with reduced fruit yields.

Analysis of Soil Organic Matter and Soil Total Nitrogen Condition under Different Vegetation Patterns of Huanghuadianzi Small Watershed

2013 ◽  
Vol 807-809 ◽  
pp. 1839-1842
Author(s):  
Yue Feng Guo ◽  
Yun Feng Yao ◽  
Fu Cang Qin ◽  
Wei Qi
Keyword(s):  
Soil Nutrients ◽  
Total Nitrogen ◽  
Land Use Planning ◽  
Secondary Forest ◽  
Soil Layer ◽  
Soil Nutrient ◽  
Vegetation Patterns ◽  
Small Watershed ◽  
Obvious Effect ◽  
Soil Layers

Different vegetation patterns have difference influenced on the soil nutrients and the soil nutrient contents of different soil layers in the same vegetation patterns are also different in size. In this paper, we analyze the main soil nutrients of different soil layers in different vegetation patterns in Huanghuadianzi small watershed in Ao HanQI of Chifeng in China. The result shows that in different vegetation patterns, the secondary forest of natural bush have an obvious effect on the nutrient and concentration of organic; in the artificial forest, mingled forest has a better improving effect on soil than the pure forest and natural grassland has the smallest effect; in the same vegetation patterns, organic, total nitrogen present an overall reduction trend with the deepening of soil layer accept 40-60cm soil layers. The analysis result of this paper can provide a theoretical basis for further researching the dynamic nutrient change, tree variety optimization arrangement and regional land use planning in forest grass zone.

Effects of Ant Mounds on Soil Chemistry and Vegetation Patterns in a Colorado Montane Meadow

Ecology ◽  
1983 ◽  
Vol 64 (3) ◽  
pp. 485-492 ◽  
Author(s):  
David C. Culver ◽  
Andrew J. Beattie
Keyword(s):  
Soil Chemistry ◽  
Vegetation Patterns ◽  
Montane Meadow ◽  
Ant Mounds

scholarly journals Does a carbonatite deposit influence its surrounding ecosystem?

FACETS ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 389-406
Author(s):  
James M.C. Jones ◽  
Elizabeth A. Webb ◽  
Michael D.J. Lynch ◽  
Trevor C. Charles ◽  
Pedro M. Antunes ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Soil Chemistry ◽  
Soil Microbial Communities ◽  
Soil Nutrient ◽  
Vegetation Survey ◽  
Northern Ontario ◽  
Soil Microbial ◽  
Bacteria And Fungi ◽  
First Time

Carbonatites are unusual alkaline rocks with diverse compositions. Although previous work has characterized the effects these rocks have on soils and plants, little is known about their impacts on local ecosystems. Using a deposit within the Great Lakes–St. Lawrence forest in northern Ontario, Canada, we investigated the effect of a carbonatite on soil chemistry and on the structure of plant and soil microbial communities. This was done using a vegetation survey conducted above and around the deposit, with corresponding soil samples collected for determining soil nutrient composition and for assessing microbial community structure using 16S/ITS Illumina Mi-Seq sequencing. In some soils above the deposit a soil chemical signature of the carbonatite was found, with the most important effect being an increase in soil pH compared with the non-deposit soils. Both plants and microorganisms responded to the altered soil chemistry: the plant communities present in carbonatite-impacted soils were dominated by ruderal species, and although differences in microbial communities across the surveyed areas were not obvious, the abundances of specific bacteria and fungi were reduced in response to the carbonatite. Overall, the deposit seems to have created microenvironments of relatively basic soil in an otherwise acidic forest soil. This study demonstrates for the first time how carbonatites can alter ecosystems in situ.

scholarly journals BIOMASS PRODUCTION AND OIL YIELD OF LEMONGRASS IN PUNALUR FOREST DIVISION, KERALA, INDIA.

2015 ◽  
Vol 2 (1) ◽  
pp. 102-104
Author(s):  
Nisha Raj S ◽  
Sekaran S ◽  
Paulsamy S
Keyword(s):  
Biomass Production ◽  
Statistical Processing ◽  
Soil Nutrient ◽  
Calcium Content ◽  
Nutrient Status ◽  
Management Plan ◽  
Oil Yield ◽  
Key Factor ◽  
Forest Division ◽  
Oil Concentration

Lemongrass (Cymbopogon citratus) cultivation and oil distillation from its biomass are some of the important sources of earning for the rural people and tribal communities of sourthern Western Ghats in certain specific localities. Punalur Forest Division of Kerala is one such region where some local public involved in these practices. However, no data are available on the biomass production and oil yield of lemongrass for this region. Therefore, the present study has been carried out in this line. The results of the study reports that annual biomass production was greater (9250kg/ha/yr) and comparable to that of theother lemongrass cultivated areas. Similarly, the oil yield was also higher (46.7kg/ha/yr) and the concentration of oil varied significantly across the harvesting times (0.43-0.63%). The statistical processing of data elucidates that soil pH and calcium content were having significant positive correlation to lemongrassbiomass production. Oil concentration in the biomass was negatively correlated to relative humidity. Therefore, soil nutrient status can be considered as a key factor while preparing the management plan for lemongrass cultivation in Punalur Forest Division

scholarly journals Litterfall and Nutrient Returns in the Rainforest of Southwestern Cameroon: Some Implications for Tropical Forest Productivity

2018 ◽  
Vol 8 (3) ◽  
pp. 25
Author(s):  
Mary E. Ngaiwi ◽  
Ernest L. Molua ◽  
Andrew E. Egbe
Keyword(s):  
Leaf Litter ◽  
National Park ◽  
Nutrient Dynamics ◽  
Soil Nutrient ◽  
Forest Productivity ◽  
Nutrient Inputs ◽  
Nutrient Input ◽  
Constant Weight ◽  
Nutrient Retranslocation ◽  
Baseline Information

Understanding litterfall and macronutrients in the rainforest ecosystem gives baseline information on nutrient dynamics. Litterfall and macronutrients return were studied for 12 months from November 2011 to October 2012 in a 50 ha plot in the Takamanda National Park, South-western Cameroon. This study evaluates the pattern and quantity of litterfall, with implications for forest productivity. It thus assesses the macronutrient concentrations, nutrient inputs into the surface soil, nutrient retranslocation by some key tree species and some physicochemical properties of the soil in the study site. Litter traps where placed randomly in the study plot. Litter was collected every fortnight sorted and air-dried after which they were oven dried at 70°C to constant weight. Soils were sampled from three flanks at depths of 0-10cm, 10-20cm and 20-30cm. Percentage retranslocation or accumulation before leaf fall was calculated from freshly fallen litter and mature green leaf. Total annual litterfall was 5.46 t/ha/yr and this varied with the seasons. Leaf litter contributed 90.9% of total litterfall. The concentration of N and Ca was higher than other nutrient elements Mg, K, P in all litter fragments. Nitrogen had the highest total nutrient input with the following pattern N>Ca>K>Mg>P (85.36 kg/ha/yr> 56.71 kg/ha/yr> 23.1 kg/ha/yr> 17.32 kg/ha/yr> 4.27 kg/ha/yr) respectively.Pterocarpus soyauxii had the highest retranslocation percentages for all the macronutrients studied compared to Afziliabipidensis and Terminalia ivorensis. It was observed that Terminalia ivorensis could be a good nutrient recycler that could be used to improve on degraded soils. It was however observed that Ca and Mg tend to accumulate in leaf litter for all the three species.

scholarly journals Inference of forest soil nutrient regimes by integrating soil chemistry with fuzzy-logic: Regionwide application for stakeholders of Hesse, Germany

2020 ◽  
Vol 23 ◽  
pp. e00340
Author(s):  
Felix Heitkamp ◽  
Bernd Ahrends ◽  
Jan Evers ◽  
Christian Steinicke ◽  
Henning Meesenburg
Keyword(s):  
Fuzzy Logic ◽  
Forest Soil ◽  
Soil Chemistry ◽  
Soil Nutrient
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