Seed bank composition and above-ground vegetation in response to grazing in sub-Mediterranean oak forests (NW Greece)

Plant Ecology ◽  
2008 ◽  
Vol 201 (1) ◽  
pp. 255-265 ◽  
Author(s):  
Evgenia Chaideftou ◽  
Costas A. Thanos ◽  
Erwin Bergmeier ◽  
Athanasios Kallimanis ◽  
Panayotis Dimopoulos
Keyword(s):  
Seed Bank ◽  
Ground Vegetation ◽  
Oak Forests

Seed bank composition and above-ground vegetation in response to grazing in sub-Mediterranean oak forests (NW Greece)

2008 ◽  
pp. 255-265
Author(s):  
Evgenia Chaideftou ◽  
Costas A. Thanos ◽  
Erwin Bergmeier ◽  
Athanasios Kallimanis ◽  
Panayotis Dimopoulos
Keyword(s):  
Seed Bank ◽  
Ground Vegetation ◽  
Oak Forests

Seedling establishment from seeds and seed banks in forests under long-term pollution stress: a potential for vegetation recovery

1994 ◽  
Vol 72 (2) ◽  
pp. 143-149 ◽  
Author(s):  
M. Komulainen ◽  
M. Vieno ◽  
V. T. Yarmishko ◽  
T. D. Daletskaja ◽  
E. A. Maznaja
Keyword(s):  
Seed Germination ◽  
Seed Bank ◽  
Coniferous Forest ◽  
Calluna Vulgaris ◽  
Seed Banks ◽  
Pollution Source ◽  
Average Density ◽  
Vegetation Recovery ◽  
Ground Vegetation ◽  
Empetrum Nigrum

Seed germinability of some common dwarf shrubs and seed-bank composition were studied in young pine forests along a pollution gradient from Severonickel smelter in Monchegorsk, northern Russia. Samples for seed germination and seed-bank trials were taken from sites representing different zones of pollution. Generally, germinability of dwarf shrub seeds was not affected by distance from pollution source, except for Empetrum nigrum ssp. hermaphroditium. The average density per site of seedlings that emerged from seed-bank samples varied between 278 and 416 seedlings/m2. Empetrum nigrum ssp. hermaphroditum and Betula sp. dominated in seed banks. Calluna vulgaris was also numerous at one site. As a whole, seed-bank taxa were well represented in the above ground vegetation. There were no significant differences in seedling density between sites for dominant taxa. Our results indicate that seeds can retain viability even under a heavy pollution load and thus form a potential for vegetation recovery in polluted sites. Key words: seed germination, seed bank, recovery, pollution, coniferous forest.

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.

Germination characteristics and diversity of soil seed banks and above-ground vegetation in disturbed and undisturbed oak forests

2013 ◽  
Vol 15 (4) ◽  
pp. 286-301 ◽  
Author(s):  
Mehdi Heydari ◽  
Hassan Pourbabaei ◽  
Omid Esmaelzade ◽  
David Pothier ◽  
Ali Salehi
Keyword(s):  
Seed Banks ◽  
Ground Vegetation ◽  
Oak Forests ◽  
Soil Seed Banks ◽  
Germination Characteristics
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