scholarly journals NUTRIENT CYCLING IN EUCALYPTUS DUNNII: MICRONUTRIENTS IN THE LITTERFALL

FLORESTA ◽  
2019 ◽  
Vol 49 (4) ◽  
pp. 641
Author(s):  
Dione Richer Momolli ◽  
Mauro Valdir Schumacher ◽  
Aline Aparecida Ludvichak ◽  
Kristiana Fiorentin Dos Santos ◽  
Huan Pablo De Souza ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
Leaf Litter ◽  
Deposition Pattern ◽  
Nutrient Return ◽  
Eucalyptus Dunnii ◽  
Temperature Variable ◽  
Transfer Order ◽  
Medium Diameter

The evaluation of litterfall and nutrient return is important for understanding the dynamics of nutrient cycling. Although required in smaller quantities by plants, micronutrients have unique importance in biogeochemical regulation. The objective of the present study was to quantify the litterfall and the concentration of micronutrients in the different fractions and seasons of the year in Eucalyptus dunnii stand. Four plots of 20 m x 21 m were demarcated. The collection of leaf litter, twigs (diameter <0.5 cm) and miscellaneous resulted in the installation of 4 collectors with an area of 0.5 m² in each plot. For the quantification of the thick branches fraction (diameter> 0.5 cm), four useful areas of medium-diameter trees were demarcated in each plot. The leaf fraction represented 59% of litterfall and the transfer order was Mn> Fe> B> Zn> Cu, totaling 8.04 kg ha-1. The leaf fraction presented the highest concentrations for B and Mn. The litterfall was seasonal with summer and spring differing statistically from winter and the temperature variable explains the deposition pattern of the same.

scholarly journals NUTRIENT RETURN THROUGH LITTERFALL IN A Eucalyptus dunnii Maiden STAND IN SANDY SOIL

2016 ◽  
Vol 40 (6) ◽  
pp. 1041-1048 ◽  
Author(s):  
Aline Aparecida Ludvichak ◽  
Mauro Valdir Schumacher ◽  
Grasiele Dick ◽  
Dione Richer Momolli ◽  
Huan Pablo de Souza ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Sandy Soil ◽  
Soil Characteristics ◽  
Forest Stand ◽  
Low Fertility ◽  
Nutrient Return ◽  
Pampa Biome ◽  
Eucalyptus Dunnii ◽  
Transfer Order ◽  
Subsequent Chemical

ABSTRACT In a forest stand, litterfall is primarily responsible for the retention and return of nutrients to the soil. The objective of this study was to evaluate the return of nutrients through litterfall in a stand of Eucalyptus dunnii in a Pampa biome. For quantification of litterfall, four 420-m2 installments were marked; within each one, four 0.50-m2 collection plots were distributed. For the collection of thick branches, four 7.00-m2 sub-plots were staked out. The collected litterfall was separated into leaf, twig, thick branch, and miscellany fractions for subsequent chemical analysis. The total litterfall measured was 6.99 Mg ha-1 yr-1, and comprised 61.57% leaves, 17.34% twigs, 13.83% thick branches, and 7.26% miscellany. The total amount of macronutrients in the litterfall was 160.22 kg ha-1 yr-1, and the macronutrient transfer order was the same for the leaf, twig, and thick branch fractions (Ca > N > K > Mg > S > P). The total quantity of micronutrients was 7.55 kg ha-1 yr-1, and the transfer order was Mn > Fe > B > Zn > Cu. Maintaining litterfall on the site, especially in degraded or low fertility soils like in the Pampa biome, may contribute to possible improvements in soil characteristics.

Effects of defoliation timing on plant nutrient resorption and hay production in a semi-arid steppe

2020 ◽  
Author(s):  
Tongrui Zhang ◽  
Frank Yonghong Li ◽  
Hao Wang ◽  
Lin Wu ◽  
Chunjun Shi ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
Nutrient Resorption ◽  
Plant Production ◽  
Conservation Strategy ◽  
Plant Nutrient ◽  
Resorption Efficiency ◽  
Nutrient Return ◽  
Peak Biomass ◽  
Arid Steppe ◽  
Semi Arid

Abstract Aims Nutrient resorption is a key plant nutrient conservation strategy, and its response to environmental and management changes is linked to nutrient cycling and production of ecosystems. Defoliation is a major pathway of mowing affecting plant nutrient resorption and production in grasslands, while the effect of defoliation timing has not been unexplored. The aim of this study was to examine the effect of defoliation timing on plant nutrient resorption and production in a steppe ecosystem. Methods We conducted a field experiment in a semi-arid steppe of Inner Mongolia including four treatments: early defoliation, peak defoliation, late defoliation and non-defoliation. We measured plant nitrogen (N) and phosphorus (P) resorption at species and community levels, and quantified plant N and P fluxes in resorption, litter return and hay output. Plant production in the mowing system was assessed by hay production and quality. Important Findings Peak and late defoliation, but not early defoliation, reduced plant community N and P resorption proficiency (RP); and late defoliation reduced N resorption efficiency (RE) but not P resorption efficiency. Peak and late defoliation, but not early defoliation, reduced plant nutrient resorption flux and litter nutrient return flux. Defoliation timing did not alter root nutrient accumulation as nutrient uptake from soil likely compensated the deficit of nutrient resorption. Peak defoliation had the highest hay production and quality, while early defoliation had the lowest. Our results provide new insights into the nutrient cycling in mowing grassland, and imply that the mowing timing can be used as a tool to mediate the balance between conservation and production of steppes, and the early mowing before plant peak biomass period is recommended for conservation of the steppes while keeping sustainable pastoral production.

Monthly Litterfall Dynamics in Three Different Forest Types in Jeju Island, South Korea

2018 ◽  
Author(s):  
Ji Young An ◽  
Si Ho Han ◽  
Woo Bin Youn ◽  
Sang Ick Lee ◽  
Afroja Rahman ◽  
...  
Keyword(s):  
Nutrient Cycling ◽  
Leaf Litter ◽  
Dominant Species ◽  
Forest Type ◽  
Jeju Island ◽  
Forest Composition ◽  
Forest Types ◽  
Major Pathway ◽  
Litterfall Production ◽  
High Precipitation

In a forest ecosystem, the major pathway for carbon and nutrient cycling is through litterfall, which has been influenced by physical and biological factors. The purpose of this study was to investigate monthly litterfall production in three forests in Jeju Island differentiated based on precipitation and forest composition: Chungsu (&lt;i&gt;Quercus glauca&lt;/i&gt; as the dominant species; low precipitation), Seonheul&lt;sub&gt;b&lt;/sub&gt; (&lt;i&gt;Q. glauca&lt;/i&gt; as the dominant species; high precipitation), and Seonheul&lt;sub&gt;m&lt;/sub&gt; (&lt;i&gt;Q. glauca&lt;/i&gt; and &lt;i&gt;Pinus thunbergii&lt;/i&gt; as the dominant species; high precipitation). Litterfall was collected monthly from April to December 2015 and divided into leaf litter, twig, bark, seeds, and unidentified materials. The amount of leaf litter by species varied by stand, but leaf litter and total litterfall were very similar among stands, ranging from 362 g m&lt;sup&gt;-2&lt;/sup&gt; to 375 g m&lt;sup&gt;-2&lt;/sup&gt; for leaf litter and 524 g m&lt;sup&gt;-2&lt;/sup&gt; to 580 g m&lt;sup&gt;-2&lt;/sup&gt; for total litterfall. However, oak leaf litter was the highest in May, but needle litter was the highest in December. Forest type and climate factor had no influence on the amount of litterfall in the studied forests while the litterfall production by species showed considerable seasonal variation, resulting in varying effects on carbon and nutrient cycling in these forests.

The effects of forest fragmentation and increased edge exposure on leaf litter accumulation

2004 ◽  
Vol 20 (6) ◽  
pp. 709-712 ◽  
Author(s):  
Kenneth J. Feeley
Keyword(s):  
Nutrient Cycling ◽  
Leaf Litter ◽  
Tropical Forests ◽  
Forest Fragmentation ◽  
Forest Floor ◽  
Essential Nutrients ◽  
Litter Accumulation ◽  
Forested Ecosystems

In forested ecosystems leaf litter is generally the primary pathway through which nutrients are cycled from the canopy to the forest floor (other pathways include throughfall, stemflow and animal faeces; Jordan 1985). Consequently, any disturbance that alters the quantity or quality of litter can have dramatic impacts on nutrient cycling and the availability of essential nutrients to plants (Vitousek 1984). Fragmentation of tropical forests has been demonstrated to cause several changes in both the biotic (Cosson et al. 1999, Laurance et al. 1998, Saunders et al. 1991) and abiotic environments (Camargo & Kapos 1995, Debinski & Holt 2000, Laurance 2002, Laurance et al. 2002) and thus may influence litter accumulation in the remnant patches (Carvalho & Vasconcelos 1999, Didham 1998, Laurance et al. 2002).

scholarly journals Litter Production and Organic Compound Contents in the Sudano-guinea Savannahs of Ngaoundere, Adamawa, Cameroon

2020 ◽  
pp. 1-14
Author(s):  
Adamou Ibrahima ◽  
Paul Souhore ◽  
Ahmadou Babba
Keyword(s):  
Phenolic Compounds ◽  
Organic Compound ◽  
Nutrient Cycling ◽  
Organic Compounds ◽  
Leaf Litter ◽  
Plant Species ◽  
Plant Diversity ◽  
Forest Ecosystems ◽  
Litter Production ◽  
Cellulose Content

Litter production which is important for understanding nutrient cycling and assessing productivity in forest ecosystems is poorly studied in the African savannahs, particularly in the savannahs of Cameroon. Thus, litter production and organic compounds of the thirty-six (36) contrasting plant species were studied in the Sudano-guinea savannahs of Ngaoundere, Cameroon. Litter collected in framework of 50 cm x 50 cm under the three tree of each plant species in three sites of the savannahs of Ngaoundere during the period of their maximum fall that from November and January. After two years of collection, mean annual litter production varied from 0.36 in S. longipedunculata to 10.06 t.ha-1.year-1 in F. polita at Dang, from 0.14 in G. aqualla to 9.39 t.ha-1.year-1 in V. paradoxa at Biskewal, and from 0.35 in G. aqualla to 3.64 t.ha-1.year-1 in S. guineense var. macrocarpum at Wakwa. Contribution of leaf litter, fruits and wood were respectively more than 50%, 1.40% and 32% to the total litter. Litter production varied from 2.35 t.ha-1.year-1 at Wakwa to 2.91 t.ha-1.year-1 at Dang, but the sites did not differ significantly among them. Litter cellulose content varied from 4.11 in P. hookeri to 11.84% in V. doniana, that of lignin from 2.28 in V. paradoxa to 8.12% in V. doniana, that of NDF from 21.35 in S. guineense var. guineense to 75.73% in S. guineense var. macrocarpum, and that of phenolic compounds from 0.47 in V. doniana to 16.11% in C. molle. Litter production and organic compounds content were affected by plant diversity, but not by sites in the Sudano-guinea savannahs of Ngaoundere, Cameroon. These results would contribute to well select plant species for their domestication and to management of Adamawa savannahs of Cameroon.

scholarly journals Pattern of litterfall and return of nutrients in five Oak species of mixed Oak forest of Manipur, North-East India

2017 ◽  
Vol 2 (1) ◽  
pp. 1 ◽  
Author(s):  
Ng. Lamnganbi Devi ◽  
E. Jadu Singh
Keyword(s):  
Leaf Litter ◽  
Tree Species ◽  
Forest Floor ◽  
Turnover Time ◽  
Litter Production ◽  
Oak Forest ◽  
Nutrient Return ◽  
North East India ◽  
North East ◽  
Leaf Litterfall

Litterfall and its nutrient return in five oak species were studied in the mixed Oak forest in Senapati District, Manipur .Litter production was measured by litter trap method. The total annual litterfall was 958.9 g m-2yr-1.Leaf and non leaf litterfall comprises 76.7 % and 23.3 % of the total litterfall. Maximum litterfall was found in the month of April (193.5 g m-2) and minimum in the month of July (23.7 g m-2).About 70% of the forest floor was replaced each year with turnover time of 1.42 yr.The amount of nutrient return through leaf litter was found to be maximum in Q.polystachya and minimum in C.indica. Nutrients (NPK) concentration of leaf litter of five different tree species was varied among different tree species.

scholarly journals The Role of Quantitative Traits of Leaf Litter on Decomposition and Nutrient Cycling of the Forest Ecosystems

2013 ◽  
Vol 29 (1) ◽  
pp. 38-48 ◽  
Author(s):  
Mohammed Mahabubur Rahman ◽  
Jiro Tsukamoto ◽  
Yuji Tokumoto ◽  
Md. Ashikur Rahman Shuvo
Keyword(s):  
Nutrient Cycling ◽  
Leaf Litter ◽  
Quantitative Traits ◽  
Forest Ecosystems

Conversion of a natural broad-leafed evergreen forest into pure and mixed plantation forests in a subtropical area: effects on nutrient cycling

1998 ◽  
Vol 28 (10) ◽  
pp. 1518-1529 ◽  
Author(s):  
Yuwu Lian ◽  
Qishui Zhang
Keyword(s):  
Nutrient Cycling ◽  
Litter Decomposition ◽  
Chinese Fir ◽  
Evergreen Forest ◽  
Plantation Forest ◽  
Nutrient Return ◽  
Total N ◽  
Subtropical Area ◽  
Plantation Forests ◽  
Mixed Plantation

Conversion of natural broad-leafed evergreen forests into pure and mixed plantation forests in a subtropical area in China is a common practice in forest management. We investigated the effects of this conversion on litterfall, litter decomposition, and nutrient cycling. Monthly deposition of total N, P, K, Ca, and Mg through throughfall, stemflow, and various components of litterfall was investigated and compared over 3 consecutive years from January 1989 to December 1991 for both forests. The total annual fine litterfall over 3 years of observation was 4.8 t/ha in a pure plantation conifer forest of Chinese-fir (Cunninghamia lanceolata), 7.1 t/ha in a mixed plantation forest of Chinese-fir and Schima superba, and 13.3 t/ha in a natural broad-leafed evergreen forest of Castanopsis kawakamii, respectively. The contributions of litterfall to the total nutrient fluxes were greater than those of throughfall and stemflow for all five nutrient elements in two contrasting forests of Chinese-fir and C. kawakamii. The results of this study demonstrate that natural broad-leafed evergreen forest has a greater capability of nutrient return, coupled with higher rates of litter decomposition and nutrient release, larger soil nutrient pools, and higher nutrient availability, than pure forest, suggesting that conservation of a natural forest is a necessary measure for maintaining woodland soil quality and primary productivity.

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