scholarly journals Fine root biomass and seed bank in secondary and primary forests in Eastern Amazon

Interação ◽  
2020 ◽  
Vol 21 (1) ◽  
pp. 748-761
Author(s):  
Madson Alan Rocha de Sousa ◽  
Raul Negrão de Lima ◽  
Ana Clara Saraiva de Lima ◽  
Camila de Almeida Milhomem ◽  
Luiz Fernandes Silva Dionisio
Keyword(s):  
Seed Bank ◽  
Fine Root ◽  
Plant Root ◽  
Forest Edge ◽  
Fine Root Biomass ◽  
Primary Forest ◽  
Native Forest ◽  
Root Mass ◽  
Plant Root System ◽  
Important Structure

Amazon is made up of a mosaic of ecosystems that have important structure, flora, and ecological functions for Brazil and the world. Knowing aspects of this biome related to the production and biomass of fine roots is of major importance given the role that the plant root system plays in nutrient cycling and carbon storage. Therefore, this study aimed to quantify the fine root mass in two regeneration areas and in primary forest, with a forest edge, in order to verify whether in different environments there are significant differences in root mass, as well as to compare the seed bank of the three areas to try to identify similarities among banks. The native forest presented a higher root mass, which differs from the two regeneration areas. The seed bank of succession forests is more similar to each other. The native forest has a greater number of seeds per volume of soil and litter collected. Concerning morphospecies, a higher number was observed in succession forests. The three areas differ in terms of fine root mass; however, regarding the seed banks, a possible edge effect may be affecting the native forest.

Fine root growth dynamics in teak (Tectonagrandis Linn. F.)

1986 ◽  
Vol 16 (6) ◽  
pp. 1360-1364 ◽  
Author(s):  
S. K. Srivastava ◽  
K. P. Singh ◽  
R. S. Upadhyay
Keyword(s):  
Root Growth ◽  
Root Biomass ◽  
Fine Root ◽  
Growth Dynamics ◽  
Temporal Variations ◽  
Fine Root Biomass ◽  
Tropical Region ◽  
Root Bark ◽  
Root Mass ◽  
Root Dynamics

Temporal variations in the spatial distribution of fine root mass were studied in a 19-year-old teak plantation in a dry tropical region. The soil block method was used to investigate fine root dynamics. Quantification of fine root mass was achieved in terms of live teak roots (separated by diameter), dead teak roots, teak root bark, herb roots, and fragmented soil organic matter. The annual mean fine root biomass was 5420 kg•ha−1 and the net production was 5460 kg•ha−1•year−1. The bulk of the root mass was distributed at a depth of 10–30 cm and roots ≤2 mm constituted one-half or more of the total root biomass. Maximum live root growth occurred during the rainy season. All root sizes showed similar bimodal seasonal patterns, but the maximum:minimum ratio generally declined with greater root size.

Hydraulic properties and fine root mass of Larix sibirica along forest edge-interior gradients

2015 ◽  
Vol 63 ◽  
pp. 28-35 ◽  
Author(s):  
Tselmeg Chenlemuge ◽  
Choimaa Dulamsuren ◽  
Dietrich Hertel ◽  
Bernhard Schuldt ◽  
Christoph Leuschner ◽  
...  
Keyword(s):  
Hydraulic Properties ◽  
Fine Root ◽  
Forest Edge ◽  
Larix Sibirica ◽  
Root Mass

scholarly journals Below-ground secondary succession in tropical forests of Borneo

2011 ◽  
Vol 27 (4) ◽  
pp. 413-420 ◽  
Author(s):  
Francis Q. Brearley
Keyword(s):  
Secondary Succession ◽  
Fine Root ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Stand Age ◽  
Primary Forest ◽  
Root Mass ◽  
Soil Nutrient Status ◽  
Lowland Forests ◽  
Below Ground

Abstract:As the destruction and severe disturbance of primary tropical forest continues, it is important to understand how these forests may recover from perturbations. Considerable work has been done on above-ground recovery but below-ground processes are less well understood. To determine changes in root mass during tropical secondary succession in lowland forests of Central Borneo, samples were taken from stands of increasing ages since abandonment of agriculture (1, 3, 14 and 31 y) with a primary forest control (six plots from 1-y-old stands and three from all other ages). Root mass and elemental concentrations were determined and soils were chemically analysed. There was no increase in root mass with stand age for fine-root (< 2 mm diameter) or small-root (< 5 mm diameter) mass but there was a trend for coarse-root mass (5–10 mm diameter) to increase with stand age. Negative correlations were shown between root mass and soil nutrient status. Fine-root C concentrations increased with stand age but there was no clear effect of stand age on fine-root N or P. Fine-root mass did not increase significantly with stand age suggesting a rapid recovery; instead, soil nutrient status appeared to be the most important factor controlling root mass. Of the soil nutrients measured in this study, N had a stronger control over root mass than P suggesting that this element may be limiting during secondary succession in tropical lowland forests of Borneo.

scholarly journals FINE ROOT BIOMASS OF ERICA TRIMERA (ENGL.) ALONG AN ALTITUDINAL GRADIENT ON BALE MOUNTAINS, ETHIOPIA

2019 ◽  
Vol 7 (9) ◽  
pp. 230-245
Author(s):  
Abebe Worku ◽  
Masresha Fetene ◽  
Solomomn Zewdie ◽  
Yoseph Assefa
Keyword(s):  
Rainy Season ◽  
Fine Root ◽  
Transition Period ◽  
Soil Nutrient ◽  
Critical Factor ◽  
Fine Root Biomass ◽  
Root Production ◽  
Fine Root Production ◽  
Root Mass ◽  
Four Seasons

Fine roots biomass of Erica trimera was investigated at three altitudinal levels, i.e. 3000, 3300, and 3500 masl across  three depth classes (0-10, 10-20, and 20-40 cm) for each of the four seasons of Bale Mountains by using sequential soil coring. Soil chemical characteristics and moisture were analyzed for all of the three altitudinal levels and depth classes. The annual fine root production of the species was calculated based on min-max method. Fine root production increased markedly from 3270 kg. ha-1. yr-1 at 3000 masl and 2850 kg. ha-1. yr-1 at 3300 masl to 9987 kg. ha-1. yr-1 at 3500 masl. Total nitrogen, available phosphorous, organic carbon, moisture content and PH of the soil increased significantly as altitude increased. In the two lower altitudinal levels, 3000 and 3300masl, fine root mass and biomass decreased as depth increased, but at the higher altitude (3500 masl) fine root tended to more concentrated at the deeper depths while  the availability of soil nutrient and soil acidity showed a tendency to decreased as depth increased at all of the three sites. The highest fine root mass and biomass was recorded at the major rainy season followed by the transition period, the small rainy and dry period, in that order. The highest fine root mass during the major rainy season and lowest fine root mass in the dry season indicated that soil moisture was critical factor in governing the pattern of root growth in this ecosystem.

Effects of thinning on fine root biomass and carbon storage of subalpine Picea asperata plantation in Western Sichuan Province, China

2013 ◽  
Vol 36 (7) ◽  
pp. 645-654 ◽  
Author(s):  
Yun-Ke LIU ◽  
Chuan FAN ◽  
Xian-Wei LI ◽  
Yin-Hua LING ◽  
Yi-Gui ZHOU ◽  
...  
Keyword(s):  
Carbon Storage ◽  
Root Biomass ◽  
Fine Root ◽  
Fine Root Biomass ◽  
Sichuan Province ◽  
Western Sichuan ◽  
Picea Asperata

scholarly journals Fine root biomass and morphology in a temperate forest are influenced more by the nitrogen treatment approach than the rate

2021 ◽  
Vol 130 ◽  
pp. 108031
Author(s):  
Wen Li ◽  
Yifei Shi ◽  
Dandan Zhu ◽  
Wenqian Wang ◽  
Haowei Liu ◽  
...  
Keyword(s):  
Root Biomass ◽  
Temperate Forest ◽  
Fine Root ◽  
Treatment Approach ◽  
Fine Root Biomass ◽  
Nitrogen Treatment

scholarly journals Effect of earthworms on mycorrhization, root morphology and biomass of silver fir seedlings inoculated with black summer truffle (Tuber aestivum Vittad.)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tina Unuk Nahberger ◽  
Gian Maria Niccolò Benucci ◽  
Hojka Kraigher ◽  
Tine Grebenc
Keyword(s):  
Root System ◽  
Root Biomass ◽  
Fine Root ◽  
Abies Alba ◽  
Fine Root Biomass ◽  
Root Tip ◽  
Silver Fir ◽  
Tuber Aestivum ◽  
Root Tips ◽  
Root Parameters

AbstractSpecies of the genus Tuber have gained a lot of attention in recent decades due to their aromatic hypogenous fruitbodies, which can bring high prices on the market. The tendency in truffle production is to infect oak, hazel, beech, etc. in greenhouse conditions. We aimed to show whether silver fir (Abies alba Mill.) can be an appropriate host partner for commercial mycorrhization with truffles, and how earthworms in the inoculation substrate would affect the mycorrhization dynamics. Silver fir seedlings inoculated with Tuber. aestivum were analyzed for root system parameters and mycorrhization, how earthworms affect the bare root system, and if mycorrhization parameters change when earthworms are added to the inoculation substrate. Seedlings were analyzed 6 and 12 months after spore inoculation. Mycorrhization with or without earthworms revealed contrasting effects on fine root biomass and morphology of silver fir seedlings. Only a few of the assessed fine root parameters showed statistically significant response, namely higher fine root biomass and fine root tip density in inoculated seedlings without earthworms 6 months after inoculation, lower fine root tip density when earthworms were added, the specific root tip density increased in inoculated seedlings without earthworms 12 months after inoculation, and general negative effect of earthworm on branching density. Silver fir was confirmed as a suitable host partner for commercial mycorrhization with truffles, with 6% and 35% mycorrhization 6 months after inoculation and between 36% and 55% mycorrhization 12 months after inoculation. The effect of earthworms on mycorrhization of silver fir with Tuber aestivum was positive only after 6 months of mycorrhization, while this effect disappeared and turned insignificantly negative after 12 months due to the secondary effect of grazing on ectomycorrhizal root tips.

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