scholarly journals Nutrient cycling in deciduous forest ecosystems of the Sierra de Gata mountains: aboveground litter production and potential nutrient return

1998 ◽  
Vol 55 (7) ◽  
pp. 749-769 ◽  
Author(s):  
Juan F. Gallardo ◽  
Alejandro Martin ◽  
Ignacio Santa Regina
Keyword(s):  
Nutrient Cycling ◽  
Forest Ecosystems ◽  
Deciduous Forest ◽  
Litter Production ◽  
Nutrient Return ◽  
Aboveground Litter

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.

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.

scholarly journals Litter-Fall Production, Decomposition and Elemental (Ca, K, Mn, Fe, Zn and Co) Cycling in Deciduous Sal (Shorea Robusta) Forest in Bangladesh

2021 ◽  
Author(s):  
Razia Sultana ◽  
ASM Saifullah ◽  
Rahat Khan Khan ◽  
Mir Talas Mahammad Diganta
Keyword(s):  
Leaf Litter ◽  
Plant Species ◽  
Deciduous Forest ◽  
Pearson Correlation ◽  
Nutrient Release ◽  
Tectona Grandis ◽  
Sampling Period ◽  
Litter Production ◽  
Shorea Robusta ◽  
Terminalia Bellirica

Abstract The litters in the forest floor are the principal contributor for regulating the cycling of necessary elements, primary productivity and maintain soil fertility within the forest ecosystems. Therefore, this study was conducted in a deciduous forest of Bangladesh to ascertain the leaf-litter production and decomposition along with elemental dynamics (K, Ca, Mn, Fe, Co and Zn). Leaf-litter samples from five deciduous plant species and soil samples were collected from the Madhupur Sal Forest for about six months (July-December) in 2018. Production of leaf-litter during the dry season (December) was found in an order of Shorea robusta>Dipterocarpus indicus>Terminalia bellirica>Tectona grandis>Grewia microcos. The decomposition rates were higher for the long sampling period (90 days) followed by the intermediate (60 days)> short(30 days) sampling period. The nutrient release pattern from the leaf-litter was similar (Ca>K>Mn>Fe>Zn>Co) for all plant species except for Terminalia bellirica and Tectona grandis. The Pearson correlation coefficients showed a significant relationship between K and Fe (r=0.54; p<0.05), Ca and Co (r=0.59; p<0.01), Fe and Co (r=0.97; p<0.05) in leaf-litters. Analysis of variance (ANOVA) revealed significant variation in the litter production, decomposition and nutrient content (except Zn; p>0.05) among the different plant species (p<0.05). There revealed a significant dynamic of necessary elements from soil to trees and vice-versa.

scholarly journals Integrating forest-pasture: Spatial analysis and delineation of zones of litter production and nutrient return

2015 ◽  
Vol 36 (6Supl2) ◽  
pp. 4377
Author(s):  
Sabino Pereira da Silva Neto ◽  
Antonio Clementino dos Santos ◽  
Raimundo Laerton de Lima Leite ◽  
José Expedito Cavalcante da Silva ◽  
Durval Nolasco Neves Neto ◽  
...  
Keyword(s):  
Spatial Analysis ◽  
Treatment Plant ◽  
Principal Component ◽  
Soil Surface ◽  
Plant Litter ◽  
Litter Production ◽  
Nutrient Accumulation ◽  
Nutrient Return ◽  
Forest Strata ◽  
Equidistant Points

This study aimed to quantify, describe, and identify plant litter production and nutrient accumulation zones in different forest-pasture integration (FPI) systems and forest strata of the Cerrado-Amazon transition on typical orthic Quartzarenic Neosol using spatial analysis, principal component analysis, and non-hierarchical fuzzy k-mean clustering logic techniques. The evaluations were performed at two FPI systems comprising a combination of Brachiaria brizantha cv. Marandu and thinned native vegetation with 50 and 75% (FPI-I and FPI-II, respectively) shade in an original thinned forest (NFI) and in an original intact forest (NF-II) with 80 and 95% shade, respectively. An area of 4,000 m² (40 x 100 m) that contained 32 sampling points arranged in a 4 x 25 m grid was demarcated for each treatment. Plant litter was collected using 32 collectors installed at equidistant points. Twelve nylon bags were placed on the soil surface at each point to evaluate the plant litter decomposition, totaling 384 bags per treatment. It was possible to quantify, describe, and define plant litter production and nutrient accumulation zones in different FPI systems and forest strata of the Cerrado-Amazon transition on orthic Quartzarenic Neosol using geostatistical analysis, principal components, and non-hierarchical fuzzy k-mean clustering logic procedures.

scholarly journals LITTER CONTRIBUTION ON DIFFERENT GEOMORPHOLOGICAL CONDITIONS IN THE ATLANTIC FOREST – STATE OF RIO DE JANEIRO, BRAZIL

FLORESTA ◽  
2019 ◽  
Vol 49 (3) ◽  
pp. 373
Author(s):  
Victória Maria Monteiro Mendonça ◽  
Gilsonley Lopes Santos ◽  
Marcos Gervasio Gervasio Pereira ◽  
Carlos Eduardo Gabriel Menezes
Keyword(s):  
Leaf Litter ◽  
Forest Floor ◽  
Rio De Janeiro ◽  
Deciduous Forest ◽  
Abiotic Factors ◽  
Nutrient Content ◽  
Litter Production ◽  
Forest Fragments ◽  
Small Sites ◽  
Leaf Litter Production

The deposition of leaf litter on the forest floor is influenced by biotic and abiotic factors where forest fragments are inserted, which is a major source of nutrients to the soil. The objective of this study was to evaluate the influence of the change in relief conditions (landform) in leaf litter contribution and nutrient content in a Submontane Seasonal Semi-deciduous Forest in Pinheiral (state of Rio de Janeiro, Brazil). It was selected two adjacent landforms with convex and concave relief type and they divided into small sites (SS), obeying the variation of the slope and topographic gradient. Five conic collectors with an area of 0.2834 m² were installed in each SS, totaling 30 collectors. The collections of leaf litter were carried out every 30 days during a year. The material retained in the traps was separated as the fractions; leaves, twigs, reproductive and other material to assess the proportion of each fraction in the leaf litter production and nutrient content of the fraction leaves. The contribution and nutrient content of litter are influenced by the type of landform and seasons of the year. The highest contribution was observed in the dry season, in the lower and middle SS of the landforms, and the highest nutrient levels occurred in the convex landform during the rainy season.

scholarly journals Effect of biochar addition on leaf-litter decomposition at soil surface during three years in a warm-temperate secondary deciduous forest, Japan

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Yukiya Minamino ◽  
Nobuhide Fujitake ◽  
Takeshi Suzuki ◽  
Shinpei Yoshitake ◽  
Hiroshi Koizumi ◽  
...  
Keyword(s):  
Carbon Sequestration ◽  
Leaf Litter ◽  
Litter Decomposition ◽  
Forest Floor ◽  
Nutrient Dynamics ◽  
Forest Ecosystems ◽  
Deciduous Forest ◽  
Soil Surface ◽  
Leaf Litter Decomposition ◽  
Dry Conditions

AbstractThe addition of biochar to the forest floor should facilitate efficient carbon sequestration. However, little is known about how biochar addition effects litter decomposition, which is related to carbon and nutrient dynamics in forest ecosystems. This study evaluated the effect of biochar addition on leaf litter decomposition in a forest ecosystem. To examine whether leaf litter decomposition was stimulated above and below biochar, litterbag experiments were carried out for about 3 years in a field site where biochar was added at the rate of 0, 5 and 10 t ha−¹ (C0, C5 and C10 plots) to the forest floor in a temperate oak forest, Japan. Biochar addition at C10 significantly enhanced litter decomposition below biochar for 2 years after treatment and above biochar for 1 year after treatment. Litter water content in biochar plots tended to increase under dry conditions. Biochar addition enhanced litter decomposition because of increased microbial activity with increased moisture content and accelerated the decomposition progress rather than changing the decomposition pattern. However, the carbon emission through changing leaf litter decomposition was small when compared with the carbon addition by biochar, indicating that biochar could be an effective material for carbon sequestration in forest ecosystems.

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