Temporal changes in spatial pattern of fine-root mass and nutrient concentrations in Indian bamboo savanna

1999 ◽  
Vol 2 (2) ◽  
pp. 229-238 ◽  
Author(s):  
S.K. Tripathi ◽  
K.P. Singh ◽  
P.K. Singh
Keyword(s):  
Spatial Pattern ◽  
Fine Root ◽  
Temporal Changes ◽  
Nutrient Concentrations ◽  
Root Mass

scholarly journals Root Mass and Elemental Concentrations in an Irish Oak Woodland

2020 ◽  
Vol 8 (2) ◽  
pp. 5-7
Author(s):  
Francis Q. Brearley ◽  
Keyword(s):  
Soil Nutrients ◽  
Fine Roots ◽  
Fine Root ◽  
Al Toxicity ◽  
Nutrient Concentrations ◽  
Root Mass ◽  
Strong Correlations ◽  
Root Dynamics ◽  
Fine Root Dynamics ◽  
Elemental Concentrations

Fine roots (< 2 mm diameter) are key for nutrient and carbon cycling in forests but less well studied for oak than other European trees. To better understand controls on root mass and nutrient concentrations in oak stands, a study was conducted at Glendalough in Ireland. Roots were removed from soils and measured for biomass, length and nutrient concentrations along with soil nutrients. Fine root mass was 360 gm-2 and comparable to other oak stands. Whilst root N concentrations were high, P concentrations were low and N, P, K, Mg, but not C or Ca were at greater concentrations in fine roots compared to coarse (2-5 mm) roots. The root Ca:Al ratio suggested Al toxicity although this was less marked in organic-rich soils. Neither root mass nor root nutrient concentrations showed particularly strong correlations with soil nutrients or pH. Whilst this data agrees well with other similar studies, improved analysis by separating live and dead roots will further advance our understanding of controls on forest fine root dynamics.

scholarly journals Vertical distribution, nutrient concentration and seasonal changes of fine root mass in a semi-deciduous tropical dry forest and in two adjacent pastures in the Western Llanos of Venezuela

2020 ◽  
Vol 8 (2) ◽  
pp. 93-104
Author(s):  
Ana Francisca González-Pedraza ◽  
Nelda Dezzeo
Keyword(s):  
Vertical Distribution ◽  
Seasonal Changes ◽  
Rainy Season ◽  
Nutrient Concentration ◽  
Fine Root ◽  
Tropical Dry Forest ◽  
Dry Season ◽  
Dry Forest ◽  
Nutrient Concentrations ◽  
Root Mass

With the objective to contribute to a better understanding of ecological consequences of deforestation on the below-ground system in the Western Llanos of Venezuela, we evaluated the vertical distribution, nutrient concentration and seasonal changes of total fine root mass (FRM) (<2 mm diameter) in a semi-deciduous tropical dry forest and in 2 adjacent pastures of Cynodon nlemfuensis: a young pasture (YP, 5 years old) and an old pasture (OP, 18 years old) in the Obispo municipality, Barinas State. This evaluation included measurements at the end of the rainy season, during the dry season and during the subsequent early rainy season in 2005/2006. Highest FRM was recorded during the dry season, which probably indicates a plant water-stress response mechanism. The highest proportion (63‒88%) of FRM was concentrated in the 10–20 cm soil layer at all studied sites, probably due to a higher nutrient and moisture content at that depth. Non-significant differences (P>0.05) were observed in the total concentrations of organic carbon, nitrogen, phosphorus, calcium and magnesium in the FRM in soils supporting forest, OP and YP at the evaluated depths. Non-significant changes in the total FRM and nutrient concentrations were observed between the sampling periods and the 3 study sites. YP soils showed a slight increase in FRM that could be associated with the root growth of secondary vegetation, which is considered a weed and is periodically removed. Our results suggest that the land use change from tropical forest to pastures has not significantly affected the mass of fine roots and their carbon and nutrient concentrations. Further studies are needed to determine if these findings apply to other ecosystems.

Effects of harvesting on fine root biomass and decomposition in an Engelmann spruce – subalpine fir forest

2003 ◽  
Vol 33 (5) ◽  
pp. 847-853 ◽  
Author(s):  
Sylvia E Welke ◽  
Graeme D Hope ◽  
Gary A Hunt
Keyword(s):  
Root Biomass ◽  
Fine Root ◽  
Timber Harvesting ◽  
High Elevation ◽  
Fine Root Biomass ◽  
Nutrient Concentrations ◽  
Root Dynamics ◽  
Subalpine Fir ◽  
Root Longevity ◽  
Engelmann Spruce

The effect of timber harvesting on the biomass, nutrient standing crop, and decomposition of fine roots (<2 mm) was studied in a high elevation, Engelmann spruce (Picea engelmannii Parry ex Engelm.) – subalpine fir (Abies lasiocarpa (Hook.) Nutt.) forest. Root dynamics were compared in openings of different sizes. The sequential core method was used to collect fine root samples over 4 years. Differences in fine root biomass between opening sizes were most significant for the active fine root portion and were most pronounced in the fall compared with the spring. Active fine root biomass was significantly lower in the 10-ha clearcuts (164 kg/ha) compared with control plots (275 kg/ha). Furthermore, active fine root biomass was often lower in the 1.0-ha opening than in the 0.1-ha and control plots. A similar trend was established for inactive fine root biomass, although this was not consistent over sampling years. Nutrient concentrations of K, but no other elements, were higher in control plots. Nutrient standing crops, however, followed trends observed in fine root biomass. In the 10-ha clearcuts, the largest changes in fine root biomass occurred at the edge of the opening. The findings suggest that small (<10 ha) cutblocks may maintain greater fine root longevity.

scholarly journals How are nitrogen availability, fine‐root mass, and nitrogen uptake related empirically? Implications for models and theory

2019 ◽  
Vol 25 (3) ◽  
pp. 885-899 ◽  
Author(s):  
Ray Dybzinski ◽  
Angelo Kelvakis ◽  
John McCabe ◽  
Samantha Panock ◽  
Kanyarak Anuchitlertchon ◽  
...  
Keyword(s):  
Nitrogen Uptake ◽  
Nitrogen Availability ◽  
Fine Root ◽  
Root Mass

Standing fine root mass and production in four Chinese subtropical forests along a succession and species diversity gradient

2013 ◽  
Vol 376 (1-2) ◽  
pp. 445-459 ◽  
Author(s):  
Cong Liu ◽  
Wenhua Xiang ◽  
Pifeng Lei ◽  
Xiangwen Deng ◽  
Dalun Tian ◽  
...  
Keyword(s):  
Species Diversity ◽  
Fine Root ◽  
Root Mass ◽  
Subtropical Forests ◽  
Diversity Gradient

Fine root mass and fine root production in tropical moist forests as dependent on soil, climate, and elevation

2011 ◽  
pp. 428-444 ◽  
Author(s):  
D. Hertel ◽  
Ch. Leuschner ◽  
L. A. Bruijnzeel ◽  
F. N. Scatena ◽  
L. S. Hamilton
Keyword(s):  
Fine Root ◽  
Root Production ◽  
Fine Root Production ◽  
Root Mass ◽  
Soil Climate

Fine root diameters can change in response to changes in nutrient concentrations

2007 ◽  
Vol 297 (1-2) ◽  
pp. 243-254 ◽  
Author(s):  
Richard W. Zobel ◽  
Thomas B. Kinraide ◽  
Virupax C. Baligar
Keyword(s):  
Fine Root ◽  
Nutrient Concentrations

Fine-root mass, growth and nitrogen content for six tropical tree species

2006 ◽  
Vol 290 (1-2) ◽  
pp. 357-370 ◽  
Author(s):  
Oscar J. Valverde-Barrantes ◽  
James W. Raich ◽  
Ann E. Russell
Keyword(s):  
Nitrogen Content ◽  
Tree Species ◽  
Fine Root ◽  
Tropical Tree ◽  
Root Mass ◽  
Mass Growth ◽  
Tropical Tree Species

A β-sitosterol assay for fine-root mass in soils

1997 ◽  
Vol 29 (1) ◽  
pp. 39-44 ◽  
Author(s):  
R.L. Sinsabaugh ◽  
R.K. Antibus ◽  
C.R. Jackson ◽  
S. Karpanty ◽  
M. Robinson ◽  
...  
Keyword(s):  
Fine Root ◽  
Root Mass
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