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.

scholarly journals Germinable Soil Seed Bank in Biancana Badlands

Diversity ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 223
Author(s):  
Simona Maccherini ◽  
Elisa Santi ◽  
Dino Torri
Keyword(s):  
Land Cover ◽  
Spatial Pattern ◽  
Seed Bank ◽  
Soil Seed Bank ◽  
Central Italy ◽  
Regeneration Potential ◽  
Bank Structure ◽  
Standing Vegetation ◽  
The Relationship ◽  
Germinable Seed

Seed banks are important for understanding vegetation dynamics and habitat regeneration potential. Biancana badlands are vanishing landscapes where recurring and non-recurring management has been advocated to restore vegetation. Here, we investigated germinable seed bank structure and composition of a biancana badland in central Italy and evaluated the relationship between the standing vegetation and soil seed bank. We identified four land cover classes in five biancana badlands of Tuscany (central Italy) and collected data from 132 vegetation plots and 660 soil cores. We recorded 117 species in the standing vegetation. The seedlings that emerged from the soil samples, mostly annual species, numbered 183 and belonged to 31 taxa (392.5 seedlings/m−2 on average across the four land cover classes). Standing vegetation showed an aggregated spatial pattern with distinct communities while the seed bank showed a less aggregated spatial pattern. The similarity between the seed bank and standing vegetation was low. In contrast with the features generally found for disturbed and pioneer communities, but in line with seed bank characteristics of other badlands, the seed bank was particularly poor in species.

The Relationship between Attributes of Plants Represented in the Germinable Seed Bank and Stocking Pressure in a Semi-arid Subtropical Rangeland

1997 ◽  
Vol 45 (6) ◽  
pp. 1055 ◽  
Author(s):  
S. C. Navie ◽  
R. W. Rogers ◽  
R. W. Rogers
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Water Source ◽  
Close Proximity ◽  
Growth Habits ◽  
Reproductive Phases ◽  
The Relationship ◽  
Water Species ◽  
Germinable Seed ◽  
Semi Arid

A range of diaspore and mature plant attributes of the species represented in the germinable seed bank of a semi-arid subtropical Queensland sheep rangeland was investigated. The attributes of both the diaspores themselves and the plants that produced them changed as distance from water increased. Close to the water source, species with prostrate or erect growth habit and with low palatability and capsular fruits were common, whereas further from the water source plants with ascending growth habits, high palatability and mericarpic fruits were more frequent. At close proximity to water, species with diaspores that germinated rapidly, were unornamented, with unassisted dispersal and rounded in shape were common, whereas at greater distance from water, species tended to possess diaspores which germinated slowly, were ornamented (possessed awns, barbs, or hairs), with an elongated shape. Longevity of the plants (annual or perennial) was not significantly affected by distance from water. The dormant, vegetative and reproductive phases of plants that are successfully incorporated into the germinable soil seed bank can, therefore, be related to success under the different stocking intensities present at different distances from water.

The relationship between standing vegetation and the soil seed bank along the shores of Lake Taihu, China

2016 ◽  
Vol 96 ◽  
pp. 45-54 ◽  
Author(s):  
Lijuan Cui ◽  
Wei Li ◽  
Xinsheng Zhao ◽  
Manyin Zhang ◽  
Yinru Lei ◽  
...  
Keyword(s):  
Seed Bank ◽  
Lake Taihu ◽  
Soil Seed Bank ◽  
Standing Vegetation ◽  
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.

Seasonal variation in soil seed bank size and species composition of selected habitat types in Maputaland, South Africa

Bothalia ◽  
2007 ◽  
Vol 37 (2) ◽  
pp. 249-258 ◽  
Author(s):  
M. J. S. Kellerman ◽  
M. W. Van Rooyen
Keyword(s):  
South Africa ◽  
Seasonal Variation ◽  
Species Composition ◽  
Seed Bank ◽  
Soil Seed Bank ◽  
Woody Species ◽  
Forest Edge ◽  
Seed Banks ◽  
Habitat Types ◽  
Open Woodland

Seasonal variation in seed bank size and species composition of five selected habitat types within the Tembe Elephant Park. South Africa, was investigated. At three-month intervals, soil samples were randomly collected from five different habitat types: a, Licuati forest; b, Licuati thicket; c, a bare or sparsely vegetated zone surrounding the forest edge, referred to as the forest/grassland ecotone; d, grassland; and e, open woodland. Most species in the seed bank flora were either grasses, sedges, or forbs, with hardly any evidence of woody species. The Licuati forest and thicket soils produced the lowest seed densities in all seasons.  Licuati forest and grassland seed banks showed a two-fold seasonal variation in size, those of the Licuati thicket and woodland a three-fold variation in size, whereas the forest/grassland ecotone maintained a relatively large seed bank all year round. The woodland seed bank had the highest species richness, whereas the Licuati forest and thicket soils were poor in species. Generally, it was found that the greatest correspondence in species composition was between the Licuati forest and thicket, as well as the forest/grassland ecotone and grassland seed bank floras.

scholarly journals Seed Rain, Soil Seed Bank, and Seedling Emergence Indicate Limited Potential for Self-Recovery in a Highly Disturbed, Tropical, Mixed Deciduous Forest

Plants ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1391
Author(s):  
Anussara Chalermsri ◽  
La-aw Ampornpan ◽  
Witoon Purahong
Keyword(s):  
Mortality Rate ◽  
Seed Bank ◽  
Tree Species ◽  
Deciduous Forest ◽  
Soil Seed Bank ◽  
Seedling Emergence ◽  
Seed Rain ◽  
Reproductive Phenology ◽  
Mixed Deciduous Forest ◽  
Standing Vegetation

Human activity negatively affects the sustainability of forest ecosystems globally. Disturbed forests may or may not recover by themselves in a certain period of time. However, it is still unclear as to what parameters can be used to reasonably predict the potential for self-recovery of human-disturbed forests. Here, we combined seed rain, soil seed bank, and seed emergence experiments to evaluate the potential for self-recovery of a highly disturbed, tropical, mixed deciduous forest in northeastern Thailand. Our results show a limited potential for self-recovery of this forest due to low seedling input and storage and an extremely high mortality rate during the drought period. There were 15 tree species of seedlings present during the regeneration period in comparison with a total number of 56 tree species in current standing vegetation. During the dry season, only four tree seedling species survived, and the highest mortality rate reached 83.87%. We also found that the correspondence between the combined number of species and composition of plant communities obtained from seed rain, soil seed bank, and seedling emergence experiments and the standing vegetation was poor. We clearly show the temporal dynamics of the seed rain and seedling communities, which are driven by different plant reproductive phenology and dispersal mechanisms, and drought coupled with mortality. We conclude that this highly disturbed forest needs a management plan and could not recover by itself in a short period of time. We recommend the use of external seed and seedling supplies and the maintenance of soil water content (i.e., shading) during periods of drought in order to help increase seedling abundances and species richness, and to reduce the mortality rate.

scholarly journals Soil seed bank recovery occurs more rapidly than expected in semi-arid Mediterranean gypsum vegetation

2011 ◽  
Vol 109 (1) ◽  
pp. 299-307 ◽  
Author(s):  
J. M. Olano ◽  
I. Caballero ◽  
A. Escudero
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Semi Arid
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