Tree species fine-root demography parallels habitat specialization across a sandhill soil resource gradient

Ecology ◽  
2009 ◽  
Vol 90 (7) ◽  
pp. 1773-1787 ◽  
Author(s):  
Javier F. Espeleta ◽  
Jason B. West ◽  
Lisa A. Donovan
Keyword(s):  
Tree Species ◽  
Fine Root ◽  
Habitat Specialization ◽  
Soil Resource ◽  
Root Demography ◽  
Resource Gradient

Fine root architecture, morphology, and biomass of different branch orders of two Chinese temperate tree species

2006 ◽  
Vol 288 (1-2) ◽  
pp. 155-171 ◽  
Author(s):  
Zhengquan Wang ◽  
Dali Guo ◽  
Xiangrong Wang ◽  
Jiacun Gu ◽  
Li Mei
Keyword(s):  
Tree Species ◽  
Root Architecture ◽  
Fine Root

Carbon allocation in early successional tree species at elevated air humidity and different soil nitrogen sources

2021 ◽  
Author(s):  
Marili Sell ◽  
Ivika Ostonen ◽  
Gristin Rohula-Okunev ◽  
Azadeh Rezapour ◽  
Priit Kupper
Keyword(s):  
Biomass Allocation ◽  
Tree Species ◽  
Root Respiration ◽  
Fine Root ◽  
Silver Birch ◽  
Organic Carbon Content ◽  
Climate Change Scenarios ◽  
Air Humidity ◽  
Species Specific ◽  
Exudation Rate

<p>Global climate change scenarios predict increasing air temperature, enhanced precipitation and air humidity for Northern latitudes. We investigated the effects of elevated air relative humidity (RH) and different inorganic nitrogen sources (NO<sub>3</sub><sup>-</sup>, NH<sub>4</sub><sup>+</sup>) on above- and belowground traits in different tree species, with particular emphasis on rhizodeposition rates. Silver birch, hybrid aspen and Scots pine saplings were grown in PERCIVAL growth chambers with stabile temperature, light intensity and two different air humidity conditions: moderate (mRH, 65% at day and 80% at night) and elevated (eRH, 80% at day and night). The collection of fine root exudates was conducted by a culture-based cuvette method and total organic carbon content was determined by Vario TOC analyser. Fine root respiration was measured with an infra-red gas analyser CIRAS 2.  </p><p>We analysed species-specific biomass allocation, water and rhizodeposition fluxes, foliar and fine root traits in response to changing environmental conditions. The eRH significantly decreased the transpiration flux in all species. In birch the transpiration flux was also affected by the nitrogen source. The average carbon exudation rate for aspen, birch and pine varied from 2 to 3  μg C g<sup>-1</sup> day <sup>-1</sup>. The exudation rates for deciduous tree species tended to increase at eRH, while conversely decreased for coniferous trees (p=0.045), coinciding with the changes in biomass allocation. C flux released by fine root respiration varied more than the fine root exudation, whereas the highest root respiration was found in silver birch and lowest in aspen. At eRH the above and belowground biomass ratio in aspen increased, at the expense of decreased root biomass and root respiration.  </p><p>Moreover, eRH significantly affected fine root morphology, whereas the response of specific root area was reverse for deciduous and coniferous tree species. However, fine roots with lower root tissue density had higher C exudation rate. Our findings underline the importance of considering species-specific differences by elucidating tree’s acclimation to environmental factors and their interactions.   </p>

scholarly journals Relationship between Very Fine Root Distribution and Soil Water Content in Pre- and Post-Harvest Areas of Two Coniferous Tree Species

Forests ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1227
Author(s):  
Moein Farahnak ◽  
Keiji Mitsuyasu ◽  
Takuo Hishi ◽  
Ayumi Katayama ◽  
Masaaki Chiwa ◽  
...  
Keyword(s):  
Water Content ◽  
Root System ◽  
Soil Water ◽  
Soil Water Content ◽  
Tree Species ◽  
Fine Roots ◽  
Fine Root ◽  
Soil Depth ◽  
Tree Cutting ◽  
Coniferous Tree Species

Tree root system development alters forest soil properties, and differences in root diameter frequency and root length per soil volume reflect differences in root system function. In this study, the relationship between vertical distribution of very fine root and soil water content was investigated in intact tree and cut tree areas. The vertical distribution of root density with different diameter classes (very fine <0.5 mm and fine 0.5–2.0 mm) and soil water content were examined along a slope with two coniferous tree species, Cryptomeria japonica (L.f.) D. Don and Chamaecyparis obtusa (Siebold et Zucc.) Endl. The root biomass and length density of very fine roots at soil depth of 0–5 cm were higher in the Ch. obtusa intact tree plot than in the Cr. japonica intact plot. Tree cutting caused a reduction in the biomass and length of very fine roots at 0–5 cm soil depth, and an increment in soil water content at 5–30 cm soil depth of the Ch. obtusa cut tree plot one year after cutting. However, very fine root density of the Cr. japonica intact tree plot was quite low and the soil water content in post-harvest areas did not change. The increase in soil water content at 5–30 cm soil depth of the Ch. obtusa cut tree plot could be caused by the decrease in very fine roots at 0–5 cm soil depth. These results suggest that the distribution of soil water content was changed after tree cutting of Ch. obtusa by the channels generated by the decay of very fine roots. It was also shown that differences in root system characteristics among different tree species affect soil water properties after cutting.

scholarly journals Habitat specialization and phylogenetic structure of tree species in a coastal Brazilian white-sand forest

2014 ◽  
Vol 7 (2) ◽  
pp. 134-144 ◽  
Author(s):  
Alexandre A. de Oliveira ◽  
Alberto Vicentini ◽  
Jerome Chave ◽  
Camila de T. Castanho ◽  
Stuart J. Davies ◽  
...  
Keyword(s):  
Tree Species ◽  
Habitat Specialization ◽  
Phylogenetic Structure ◽  
White Sand ◽  
Sand Forest

scholarly journals Soil-related habitat specialization in dipterocarp rain forest tree species in Borneo

2004 ◽  
Vol 92 (4) ◽  
pp. 609-623 ◽  
Author(s):  
PETER A. PALMIOTTO ◽  
STUART J. DAVIES ◽  
KRISTIINA A. VOGT ◽  
MARK S. ASHTON ◽  
DANIEL J. VOGT ◽  
...  
Keyword(s):  
Tree Species ◽  
Rain Forest ◽  
Forest Tree ◽  
Habitat Specialization ◽  
Forest Tree Species
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