scholarly journals Scrutinization of Soil Seed Bank from Arid to Mesic Habitats of Dera Ghazi Khan

2018 ◽  
Author(s):  
Allah Bakhsh Gulshan ◽  
Ali Bakhsh ◽  
Syed Mazhar Irfan ◽  
Sabir Hussain ◽  
Khazir Hayat ◽  
...  
Keyword(s):  
Seed Bank ◽  
Withania Somnifera ◽  
Soil Seed Bank ◽  
Calotropis Procera ◽  
Ground Vegetation ◽  
Land Area ◽  
Chenopodium Murale ◽  
Euphorbia Prostrata ◽  
Persistent Soil Seed Bank ◽  
Soil Habitat

AbstractThe research was conducted to investigate the persistent soil seed bank composition and its relation to the above-ground vegetation of upland area (piedmont) to low land area (alluvial) landscape from arid to mesic region of Dera Ghazi Khan. A transact of 40 kilometers was laid down from arid to mesic habitat. At each 2 km a quadrate of 1 m−2 sizes was thrown in the field to collect a soil sample of 2kg from soil cores ranging 0-15 cm deep for the analysis of soil seed bank. Twenty different sites were sampled by throwing 6 quadrates at each site making a total of 120 samples. Three thousand seeds were obtained of 50 different species from all the collected samples. Soil seed bank density m−2 was higher in the alluvial plains of Dera Ghazi Khan. Most of the perennial species, which were xerophytic in nature such as Aerua persica, Calotropis procera, Fagonia indica, Leptadaenia pyrotechnica, Peganum hermala, Rhazya stricta and Suaeda fructicosa were found in the piedmont (arid) soil habitat and the soil seed bank relatively less than the species found in the alluvial (Mesic) soil habitat, which were mostly of annual life span such as Chenopodium murale, Euphorbia prostrata, Medicago denticulata, Fumaria indica, and Withania somnifera. From this study it is concluded that the similarity found between soil seed bank and above ground vegetation of both historic types of habitats piedmont (arid) and alluvial (mesic) of Dera Ghazi Khan

SOIL SEED BANK AND ITS RELATIONSHIP TO THE ABOVE-GROUND VEGETATION IN GRAZED AND UNGRAZED OXBOW WETLANDS OF THE YANGTZE RIVER, CHINA

2018 ◽  
Vol 17 (4) ◽  
pp. 959-967
Author(s):  
Wei Li ◽  
Dong Yang ◽  
Wenzhi Liu ◽  
Hui Liu
Keyword(s):  
Seed Bank ◽  
Yangtze River ◽  
Soil Seed Bank ◽  
Ground Vegetation ◽  
The Yangtze River

The role of soil temperature and seed dormancy in the creation and maintenance of persistent seed banks of Nassella trichotoma (serrated tussock) on the Northern Tablelands of New South Wales

2020 ◽  
Vol 42 (2) ◽  
pp. 85
Author(s):  
Annemieke Ruttledge ◽  
Ralph D. B. Whalley ◽  
Gregory Falzon ◽  
David Backhouse ◽  
Brian M. Sindel
Keyword(s):  
Seed Bank ◽  
New South ◽  
Soil Seed Bank ◽  
Seed Banks ◽  
Early Summer ◽  
Secondary Dormancy ◽  
South Wales ◽  
The Creation ◽  
Persistent Soil Seed Bank

A large and persistent soil seed bank characterises many important grass weeds, including Nassella trichotoma (Nees) Hack. ex Arechav. (serrated tussock), a major weed in Australia and other countries. In the present study we examined the effects of constant and alternating temperatures in regulating primary and secondary dormancy and the creation and maintenance of its soil seed bank in northern NSW, Australia. One-month-old seeds were stored at 4, 25°C, 40/10°C and 40°C, in a laboratory, and germination tests were conducted every two weeks. Few seeds germinated following storage at 4°C, compared with seeds stored at 25°C, 40/10°C and 40°C. Nylon bags containing freshly harvested seeds were buried among N. trichotoma stands in early summer, and germination tests conducted following exhumation after each season over the next 12 months. Seeds buried over summer and summer plus autumn had higher germination than seeds buried over summer plus autumn plus winter, but germination increased again in the subsequent spring. Seeds stored for zero, three, six and 12 months at laboratory temperatures were placed on a thermogradient plate with 81 temperature combinations, followed by incubation at constant 25°C of un-germinated seeds. Constant high or low temperatures prolonged primary dormancy or induced secondary dormancy whereas alternating temperatures tended to break dormancy. Few temperature combinations resulted in more than 80% germination.

RELATIONSHIPS BETWEEN SOIL SEED BANK AND VEGETATION DIVERSITY ON DIFFERENT GRAZING PRESSURE

2015 ◽  
Vol 13 (2) ◽  
pp. 105-113
Author(s):  
Gantuya Jargalsaikhan
Keyword(s):  
Species Composition ◽  
Seed Bank ◽  
Soil Seed Bank ◽  
Grazing Pressure ◽  
Ground Vegetation ◽  
Agrostis Capillaris ◽  
Vegetation Diversity ◽  
Significant Difference ◽  
Bistorta Vivipara

In a case study, the main objective was to compare three sites with different grazing pressures in Hvitarsida, W-Iceland in relation to current vegetation, seed bank composition and the correlation between those. Our results show that there were significant difference in species composition in above and belowground, giving very little similarity in species composition between seed bank and current vegetation composition. The only exceptions were Agrostis capillaris and Bistorta vivipara that had close similarity between current aboveground vegetation and soil seed bank. Agrostis capillaris had a great abundance in all the sites and Bistorta vivipara proliferates mostly with bulbils that most likely were numerous in the soil. The results of our study agree with current theories on seed bank composition and similar studies,that the similarity between current above ground vegetation and soil seed bank depends on current dominant species (annual or perennial)and the productivity (high or low) of the site.Mongolian Journal of Agricultural Sciences Vol.13(2) 2014: 105-113

The soil seed bank of a montane meadow: consequences of conifer encroachment and implications for restoration

2007 ◽  
Vol 85 (6) ◽  
pp. 557-569 ◽  
Author(s):  
Nicole L. Lang ◽  
Charles B. Halpern
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Ground Vegetation ◽  
Forest Age ◽  
Conifer Encroachment ◽  
Young Forest ◽  
Carex Pensylvanica ◽  
Montane Meadow ◽  
Forest Age Structure ◽  
Meadow Species

We examined changes in the soil seed bank associated with conifer encroachment of montane meadows in the western Cascade Range of Oregon. We asked whether, and over what period of time, meadow species maintain viable seeds in the soil, and by implication, whether the seed bank can contribute to restoration if conifers are removed. Seed bank composition, ground vegetation, and forest age structure were quantified for 209 samples representing a chronosequence of open meadow, young forest (<75 years), and old forest (95 to >200 years). The seed bank was substantial (44 taxa and 2332 germinants/m2), but dominated by native ruderals (16 species comprising 71% of germinants). Greater than 70% of meadow species were absent from the seed bank. Thirteen meadow species accounted for 21% of all germinants, but most of these were the dominant sedge, Carex pensylvanica Lam.. Seed density, richness, and composition showed weak relationships to forest age, and little resemblance to the ground vegetation, which changed markedly with forest development. Our results suggest that there is limited potential for recovery of most meadow species via the seed bank. Natural reestablishment of these species will require seed dispersal or gradual vegetative spread from existing openings, but competitive interactions with ruderal or forest species may limit recruitment or recovery.

Persistent soil seed bank and standing vegetation at a high alpine site in the central Chilean Andes

Oecologia ◽  
1999 ◽  
Vol 119 (1) ◽  
pp. 126-132 ◽  
Author(s):  
Lohengrin A. Cavieres ◽  
Carmen Castor ◽  
Mary T. Kalin Arroyo ◽  
Ana María Humaña
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Standing Vegetation ◽  
Persistent Soil Seed Bank ◽  
Chilean Andes

Restoration potential of the persistent soil seed bank in successional calcareous (alvar) grasslands in Estonia

2011 ◽  
Vol 15 (2) ◽  
pp. 208-218 ◽  
Author(s):  
Rein Kalamees ◽  
Kersti Püssa ◽  
Kristjan Zobel ◽  
Martin Zobel
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Restoration Potential ◽  
Persistent Soil Seed Bank

Mound‐building ants increase the proportion of Gramineae in above‐ground vegetation and the soil seed bank in alpine meadows

2020 ◽  
Vol 31 (5) ◽  
pp. 867-876
Author(s):  
Min Zhao ◽  
Yingwen Yu ◽  
Ying Shi ◽  
Xiaoming Mou ◽  
Allan Degen
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Ground Vegetation ◽  
Alpine Meadows

scholarly journals Species shifts in above-ground vegetation and the soil seed bank in the inter-dune lowlands of an active dune field in Inner Mongolia, China

2015 ◽  
Vol 16 (6) ◽  
pp. 490-499 ◽  
Author(s):  
Yong-Cui Wang ◽  
Mark K.J. Ooi ◽  
Guo-Hua Ren ◽  
De-Ming Jiang ◽  
Ala Musa ◽  
...  
Keyword(s):  
Seed Bank ◽  
Inner Mongolia ◽  
Soil Seed Bank ◽  
Ground Vegetation ◽  
Dune Field ◽  
Species Shifts
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