The relationship between soil seed bank, above-ground vegetation and disturbance intensity on old-field successional permanent plots

2009 ◽  
Vol 12 (4) ◽  
pp. 415-428 ◽  
Author(s):  
Michaela Dölle ◽  
Wolfgang Schmidt
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Permanent Plots ◽  
Ground Vegetation ◽  
Old Field ◽  
Disturbance Intensity ◽  
The Relationship

scholarly journals The role of Pteridium arachnoideum(Kaulf) on the seed bank of the endangered Brazilian Cerrado

2016 ◽  
Vol 76 (1) ◽  
pp. 256-267 ◽  
Author(s):  
R. O. Xavier ◽  
J. G. Alday ◽  
R. H. Marrs ◽  
D. M. S. Matos
Keyword(s):  
Seed Bank ◽  
Management Strategy ◽  
Soil Seed Bank ◽  
Seedling Emergence ◽  
Common Species ◽  
Ground Vegetation ◽  
Brazilian Cerrado ◽  
Invasive Grasses ◽  
The Relationship

Abstract The native bracken (Pteridium arachnoideum) often occurs in mono-specific stands in the Brazilian Cerrado, and this dominance can impact on both the above-ground vegetation and soil seed bank. This study investigated how invasion by this species over a 20-year period changed the seed bank and the relationship between the seed bank and litter mass. We extracted soil samples from three replicated invaded and uninvaded sites, and followed seedling emergence for six months. We collected the above-ground biomass and litter of P. arachnoideum in ten 1m2 plots from three invaded sites. There was no difference between invaded and uninvaded areas in seed bank richness, diversity or overall abundance. The most abundant family was the Melastomataceae, followed by the Poaceae. The Melastomataceae was more abundant in uninvaded sites, but the most common species of this family (Tibouchinastenocarpa) was not affected. The grasses were more common in invaded sites in the rainy season and were affected by heterogeneity in the litter layer. The seed bank could play a role in the recovery of these invaded areas, but the presence of weeds and invasive grasses could constrain their use as a management strategy.

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 Relationship Between Distance From Water and the Soil Seed Bank in a Grazed Semi-Arid Subtropical Rangeland

1996 ◽  
Vol 44 (4) ◽  
pp. 421 ◽  
Author(s):  
SC Navie ◽  
RA Cowley ◽  
RW Rogers
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Common Species ◽  
Pressure Gradients ◽  
Standing Vegetation ◽  
Open Woodland ◽  
The Relationship ◽  
Germinable Seed ◽  
Eucalyptus Populnea ◽  
Semi Arid

The germinable soil seed bank of a grassy Eucalyptus populnea F.Muell, open woodland was investigated in relationship to distance from water (away from a bore-drain) on North Yancho Station, near Bollon in southern semi-arid Queensland. The germinable soil seed bank was both diverse and abundant, 69 taxa of seedlings being identified to species and 2 more to genus. A mean density of 13 207 ± 4160 seeds m-2 was recorded, with over 80% of the seed being from the annual forbs Crassula sieberana (Schultes & J.H.Shultes) Druce, Wahlenbergia tumidifructa P.J.Smith and Dysphania gomulifera (Nees) Paul G.Wilson. Most common species showed spatial variation in their germinable seed density with relation to distance from water, resembling the patterns previously reported by other authors for standing vegetation under stocking pressure gradients.

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.

Sensitivity cycling to physical dormancy break and seed vigour of twoIpomoeaspecies (Convolvulaceae)

2009 ◽  
Vol 19 (4) ◽  
pp. 249-259 ◽  
Author(s):  
K.M.G. Gehan Jayasuriya ◽  
Jerry M. Baskin ◽  
Dennis M. Tekrony ◽  
Carol C. Baskin
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Dormancy Breaking ◽  
Physical Dormancy ◽  
Seed Vigour ◽  
Ipomoea Lacunosa ◽  
Moisture Contents ◽  
Seed Moisture ◽  
The Relationship ◽  
Treatment Sensitivity

AbstractThe physically dormant seeds ofIpomoea lacunosaand ofI. hederaceaundergo sensitivity cycling (insensitive ↔  sensitive) to dormancy-breaking treatment. Sensitivity cycling is important to seeds with physical dormancy in sensing appropriate environmental conditions for germination. Seed vigour is also important to seedling establishment, but no study has compared changes in vigour (or not) with changes in sensitivity. This study was conducted to determine the relationship between sensitivity cycling and seed vigour inI. lacunosaandI. hederacea. The seed moisture contents of insensitive and sensitive seeds ofI. lacunosaand of sensitive seeds ofI. hederaceawere measured, and several vigour tests were performed. Vigour of sensitive seeds ofI. lacunosadecreased more rapidly than that of insensitive seeds. No significant change in vigour was observed in either permeable or impermeable seeds ofI. hederacea. We conclude that sensitivity cycling to physical dormancy break is important in maintaining vigour ofI. lacunosaseeds in the soil seed-bank.

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