Response curves of seventeen woody species to soil factors along a riparian forest in northern Iran

2017 ◽  
Vol 48 (3) ◽  
pp. 219-225
Author(s):  
Mohammad Naghi Adel ◽  
Hassan Pourbabaei ◽  
Seyed Jalil Alavi ◽  
Ali Salehi
Keyword(s):  
Riparian Forest ◽  
Woody Species ◽  
Soil Factors ◽  
Response Curves ◽  
Northern Iran

Copper release characteristics in selected soils from southern and northern Iran

Soil Research ◽  
2007 ◽  
Vol 45 (6) ◽  
pp. 459 ◽  
Author(s):  
R. Ghasemi-Fasaei ◽  
M. Tavajjoh ◽  
V. Olama ◽  
B. Molazem ◽  
M. Maftoun ◽  
...  
Keyword(s):  
Power Function ◽  
Clay Mineralogy ◽  
Exchange Capacity ◽  
Ammonium Bicarbonate ◽  
Carbonate Content ◽  
Fars Province ◽  
Soil Factors ◽  
Northern Iran ◽  
Copper Release ◽  
The Difference

The aim of this research was to study and compare release characteristics of copper (Cu) in 2 groups of soils from Guilan province in northern (SNI) and Fars province in southern Iran (SSI) with significant differences in Cu availability and other soil properties. The patterns of Cu release from the soils by ammonium bicarbonate-diethylenetriaminepentaacetic acid (AB-DTPA) were studied using 5 kinetic models. Results showed that the power function, simple Elovich, and parabolic diffusion in SSI, and the power function and simple Elovich in SNI, were the best fitted models. The greater rates and magnitude of Cu released from SNI compared with SSI could be interpreted as the greater capability of the former in maintaining Cu concentration in the sufficient range. The difference in Cu release rates was considerable during initial times. Mean initial Cu release rate from SNI was ~3 times higher than that of SSI. The results reveal that the cation exchange capacity (CEC) and pH were the most influential soil factors causing differences in Cu release patterns between these 2 groups of soils. Greater CEC and lower pH in SNI compared with SSI, are mainly responsible for greater initial rates of Cu release in the former. Difference in CEC and pH of these 2 groups of soils was mainly attributed to different soil organic matter, carbonate content, and clay mineralogy.

scholarly journals Short Communication: Floristic composition and relationships between plant species abundance and soil properties in common hazel (Corylus avellana) mountainous forest of northern Iran

2018 ◽  
Vol 19 (5) ◽  
pp. 1835-1841
Author(s):  
GHADER POURRAHMATI ◽  
ASADOLLAH MATAJI ◽  
HASSAN POURBABAEI ◽  
ALI SALEHI
Keyword(s):  
Soil Properties ◽  
Plant Species ◽  
Short Communication ◽  
Species Abundance ◽  
Floristic Composition ◽  
Woody Species ◽  
Corylus Avellana ◽  
Herbaceous Species ◽  
Northern Iran ◽  
Total N

Pourrahmati G, Mataji A, Pourbabaei H, Salehi A. 2018. Short Communication: Floristic composition and relationships between plant species abundance and soil properties in common hazel (Corylus avellana) mountainous forest of northern Iran. Biodiversitas 19: 1835-1841. Mountainous forests are valuable terrestrial ecosystems because of their useful services for the human being. Here, we explored the floristic composition and the relationships between plant species abundance distribution and soil physical and chemical properties in common hazel (Corylus avellana L.) in the mountainous forest of northern Iran. Within the forest stand, 30 quadrats (20 m × 20 m and 1 m × 1 m for woody and herbaceous species, respectively) were selectively sampled along an altitudinal range from 1300 m to 1800 m a.s.l. to assess plant species composition and abundance, and soil samples were taken to perform chemical and physical analyses. The results showed that a total of 43 herbaceous and 15 woody species belonging to 23 and 8 families were identified. The abundance of herbaceous species was significantly correlated with soil properties (pH and total N). Furthermore, the abundance of woody species had a non-significant correlation with soil properties.

scholarly journals Quantification of Seed Dormancy of Deciduous Orchard Species

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 908A-908
Author(s):  
Schuyler D. Seeley
Keyword(s):  
Low Temperature ◽  
Plant Material ◽  
Temperature Response ◽  
Woody Species ◽  
Normal Growth ◽  
Response Curves ◽  
Naturally Occurring ◽  
Breaking Dormancy ◽  
Temporary Growth ◽  
Per Se

Forcing plant material has long been used to determine dormancy intensity (DI) in woody species. Forcing with growth regulators may enhance this ability. Some forcing with naturally occurring hormones may be showing us the actual DI of certain materials. But, measurements of DI that use caustic, near-lethal treatments, or metabolic agents may be all or nothing breaking indicators acting on mechanisms other than the dormancy mechanism and thus not as useful in determining DI. It is possible to cause a meristem to break without completely breaking dormancy. Measurement of normal post-dormancy growth is necessary to determine the effect of a DI agent. DI breaking treatments that act on the dormancy mechanism can cause a temporary growth flush, but, unless the extent of that growth flush is measured and compared with the growth flush of the same normally broken plant material, its true effect remains unknown. In some plant material, the safest way to determine DI is to determine the chilling required to produce normal growth. This assumes that the vernalization requirement and temperature response curves are known for the plant in question. In peach, for instance, vernalization at 2C will cause seeds to germinate, but the resulting seedlings will be physiologically dwarfed. Vernalization at 6C or at 2C cycled with higher temperatures within the vernalization range results in normal seedlings. This indicates that, for chilling to progress normally, vernalization per se must be interspersed or concomitant with growth heat units. Vernalization, therefore, has a low temperature driven component and a heat requiring development and/or growth component. Vernalization driving conditions are slowly being elucidated. Each clarification requires modification of dormancy models. DI does not equal dormancy status!

Structure, composition and regeneration of riparian forest along an altitudinal gradient in northern Iran

2017 ◽  
Vol 53 (1) ◽  
pp. 63-75
Author(s):  
Mohammad Naghi Adel ◽  
Hassan Pourbabaei ◽  
Ali Salehi ◽  
Seyed Jalil Alavi ◽  
Daniel C. Dey
Keyword(s):  
Altitudinal Gradient ◽  
Riparian Forest ◽  
Northern Iran

scholarly journals Effects of Topographic and Soil Factors on Woody Species Assembly in a Chinese Subtropical Evergreen Broadleaved Forest

Forests ◽  
2015 ◽  
Vol 6 (12) ◽  
pp. 650-669 ◽  
Author(s):  
Lijuan Zhao ◽  
Wenhua Xiang ◽  
Jiaxiang Li ◽  
Pifeng Lei ◽  
Xiangwen Deng ◽  
...  
Keyword(s):  
Woody Species ◽  
Soil Factors ◽  
Evergreen Broadleaved Forest ◽  
Species Assembly

scholarly journals Phytophthora austrocedri.

2021 ◽  
Author(s):  
Sarah Green
Keyword(s):  
Woody Species ◽  
Cupressus Sempervirens ◽  
Northern Iran ◽  
Public Park ◽  
Centre Of Origin ◽  
Plant Nursery ◽  
Water Courses ◽  
The Uk ◽  
A Site ◽  
Disease Epidemics

Abstract Phytophthora austrocedri is a soil and water-borne oomycete pathogen of woody species residing within the Cupressaceae. Its centre of origin is unknown. It was first reported causing widespread dieback and mortality of Austrocedrus chilensis in southern Argentina in 2007 and subsequently reported causing extensive dieback and mortality of Juniperus communis in northern Britain. The pathogen is considered to be invasive in both regions due to the clonal nature of the populations and recently observed disease epidemics. In addition to the two established wider-environment epidemics in Argentina and Britain, P. austrocedri has been isolated from a young Juniperus horizontalis growing in a plant nursery in Germany and from an ornamental Cupressus sempervirens located in a public park in northern Iran. P. austrocedri infects phloem in the roots and stem bases of affected hosts, with aerial infections also reported on J. communis in Britain. Natural spread is likely to occur via movement in water and soil, and possibly via animal and/or human activity. The presence of water courses and areas of standing water are likely to favour pathogen spread at a site. In Britain, DNA of P. austrocedri has been confirmed as present in traded plants of various Cupressaceae species, including those imported from continental Europe. The pathogen is a regulated pest in the plant trade in the UK.

scholarly journals Natural regeneration in the ‘Czmoń’ nature reserve (Wielkopolska Region)

2014 ◽  
Vol 75 (1) ◽  
pp. 61-75
Author(s):  
Paweł Horodecki ◽  
Katarzyna Wiczyńska ◽  
Andrzej M. Jagodziński
Keyword(s):  
Scots Pine ◽  
Natural Regeneration ◽  
Nature Reserve ◽  
Riparian Forest ◽  
Woody Species ◽  
Species Structure ◽  
Canopy Layer ◽  
Artificial Regeneration ◽  
Pine Stands ◽  
Scots Pine Stands

Abstract The ‘Czmoń’ nature reserve (23.65 ha) was established in 1998 to protect one of the best-retained areas of natural oak-hornbeam forest (Galio-Carpinetum) in the center of the Wielkopolska Region. Apart from oak-hornbeam forest, the ash-elm riparian forest (Querco-Ulmetum) and alder riparian forest (Fraxino-Alnetum) are found in the reserve. These plant communities, both natural and degenerated as a consequence of previous forest management, have created the convenient conditions for assessment the phytocoenoses’ regeneration potential. The aim of this study was to assess the age and species structure of woody species natural regeneration of the whole area of the nature reserve. To achieve that target, during August and September 2012, 142 sample plots were established with the total area 3550 m2 on which tree and shrub composition and densities were calculated. Woody species regeneration created various diverse communities among individual sub-units, however oak-hornbeam forest species were predominant in the whole regeneration layer. The character of a ‘natural’ forest was retained on a part of the stands. Moreover, regeneration in degenerated parts of the ‘Czmoń’ nature reserve stands is changing according to potential vegetation. Whereas, the establishment of gaps in the Scots pine stands using artificial regeneration was not worthwhile. The natural regeneration structure under the canopy layer of Scots pine stands unambiguously supports the claim that phytocoenoses can regenerate on their own. In spite of the oak regeneration being infrequent, all stands within the ‘Czmoń’ nature reserve retain substantial rejuvenation potential

Phytophthora austrocedri.

2021 ◽  
Author(s):  
Sarah Green
Keyword(s):  
Woody Species ◽  
Cupressus Sempervirens ◽  
Northern Iran ◽  
Public Park ◽  
Centre Of Origin ◽  
Plant Nursery ◽  
Water Courses ◽  
The Uk ◽  
A Site ◽  
Disease Epidemics

Abstract Phytophthora austrocedri is a soil and water-borne oomycete pathogen of woody species residing within the Cupressaceae. Its centre of origin is unknown. It was first reported causing widespread dieback and mortality of Austrocedrus chilensis in southern Argentina in 2007 and subsequently reported causing extensive dieback and mortality of Juniperus communis in northern Britain. The pathogen is considered to be invasive in both regions due to the clonal nature of the populations and recently observed disease epidemics. In addition to the two established wider-environment epidemics in Argentina and Britain, P. austrocedri has been isolated from a young Juniperus horizontalis growing in a plant nursery in Germany and from an ornamental Cupressus sempervirens located in a public park in northern Iran. P. austrocedri infects phloem in the roots and stem bases of affected hosts, with aerial infections also reported on J. communis in Britain. Natural spread is likely to occur via movement in water and soil, and possibly via animal and/or human activity. The presence of water courses and areas of standing water are likely to favour pathogen spread at a site. In Britain, DNA of P. austrocedri has been confirmed as present in traded plants of various Cupressaceae species, including those imported from continental Europe. The pathogen is a regulated pest in the plant trade in the UK.

scholarly journals Dynamic of Plant Composition and Regeneration following Windthrow in a Temperate Beech Forest

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Sakineh Mollaei Darabi ◽  
Yahya Kooch ◽  
Seyed Mohsen Hosseini
Keyword(s):  
Plant Species ◽  
Prunus Persica ◽  
Woody Species ◽  
Beech Forest ◽  
Herbaceous Plant ◽  
Northern Iran ◽  
Regeneration Status ◽  
Sambucus Ebulus ◽  
Closed Canopy ◽  
Brachypodium Pinnatum

The effects of soil pedoturbation (i.e., pit and mound microtopography, PM) on development of herbaceous plant species and woody species regeneration were examined in a temperate beech forest (Fagus orientalis Lipsky) in northern Iran. We recorded the vegetation in 20 pairs of disturbed and adjacent undisturbed plots and established a chronosequence of PM ages to study the effect of time since microsite formation on cover percent of herbaceous plants and woody regeneration status. According to our findings, Carex acutiformis L., Sambucus ebulus L., Brachypodium pinnatum L., and Cyclamen coum L. are found only in the PM microsites, whereas the Equisetum ramosissimum L. is recorded only under closed canopy. The coverage percent of Rubus caesius L. increased in PM microsites compared to closed canopy intensively. In addition, Albizia julibrissin Durazz. is detected in PM microsite, whereas the Acer cappadocicum B. and Prunus persica L. species were recorded only under closed canopy. We found significant differences in understory species diversity between different ages of PM, and disturbed and adjacent undisturbed plots. Our study supports that the PM complex will create a mosaic of environmental conditions. This environmental heterogeneity could be responsible for the diversity of herbaceous plant species and regeneration of woody species.

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