Germination traits and seed-bank dynamics of a biennial plant, Oenothera glazioviana Micheli

1990 ◽  
Vol 5 (2) ◽  
pp. 185-194 ◽  
Author(s):  
Naoki Kachi
Keyword(s):  
Seed Bank ◽  
Seed Bank Dynamics ◽  
Germination Traits ◽  
Oenothera Glazioviana

Seed bank dynamics of the annual halophyte Salicornia ramosissima: towards a sustainable exploitation of its wild populations

Plant Ecology ◽  
2021 ◽  
Vol 222 (5) ◽  
pp. 647-657
Author(s):  
Alejandro Polo ◽  
Alba Fragoso ◽  
María D. Infante-Izquierdo ◽  
Francisco J. J. Nieva ◽  
Adolfo F. Muñoz-Rodríguez ◽  
...  
Keyword(s):  
Seed Bank ◽  
Wild Populations ◽  
Sustainable Exploitation ◽  
Seed Bank Dynamics ◽  
Salicornia Ramosissima

scholarly journals Seed bank dynamics in five Panamanian forests

2005 ◽  
Vol 21 (2) ◽  
pp. 223-226 ◽  
Author(s):  
D. A. Fornara ◽  
J. W. Dalling
Keyword(s):  
Seed Bank ◽  
Seedling Recruitment ◽  
Fruit Production ◽  
Pioneer Species ◽  
Seasonal Fluctuations ◽  
Annual Fluctuation ◽  
Soil Seed Banks ◽  
Successful Recruitment ◽  
Seed Bank Dynamics ◽  
Lowland Forests

Many tropical pioneer species depend on the presence of high seed densities in the soil for successful recruitment following canopy disturbance (Cheke et al. 1979, Dalling & Hubbell 2002, Guevara Sada & Gómez Pompa 1972, Whitmore 1983). However determinants of variation in the composition and abundance of soil seed banks remain poorly understood. Seed bank densities can be affected by rates of seed predation and pathogen infection on the surface and in the soil, by intrinsic rates of loss in viability following dispersal, and by variation in the timing and duration of fruit production (Dalling et al. 1997, Garwood 1983, Murray & Garcia 2002). Here we compare seasonal fluctuations in seed bank density in five Panamanian forests varying in elevation and seasonality of precipitation (Table 1). We predict that lowland forests should show stronger intra-annual fluctuation in seed bank densities than montane forests because seed production and loss rates should be higher under conditions of greater resource availability, and where consistent high temperatures support greater abundance or activity of seed predators and pathogens (Brühl et al. 1999). Secondly, among lowland sites, we predict greater fluctuations in seed bank densities at drier, more seasonal sites where seasonally favourable conditions for seedling recruitment may select for interspecific synchrony in fruit production (Daubenmire 1972, Garwood 1983).

scholarly journals Vegetation and seed bank dynamics highlight the importance of post-restoration management in sown grasslands

2020 ◽  
Author(s):  
Orsolya Valkó ◽  
Balázs Deák ◽  
Péter Török ◽  
Katalin Tóth ◽  
Réka Kiss ◽  
...  
Keyword(s):  
Seed Bank ◽  
Soil Seed Bank ◽  
Rapid Development ◽  
Management Plan ◽  
Landscape Scale ◽  
List Type ◽  
Restoration Management ◽  
Seed Bank Dynamics ◽  
Term Management

AbstractSowing grass seeds generally supports the rapid development of a closed perennial vegetation, which makes the method universally suitable for fast and effective landscape-scale restoration of grasslands. However, sustaining the recovered grasslands, and increasing their diversity is a challenging task. Understanding the role of seed bank compositional changes and vegetation dynamics contributes to designating management regimes that support the establishment of target species and suppress weeds. Our aim was to reveal the effect of post-restoration management on the vegetation and seed bank dynamics in grasslands restored in one of the largest European landscape-scale restoration projects. Eight years after restoration we sampled the vegetation and seed bank in a total of 96 plots located in 12 recovered grasslands in the Great Hungarian Plain. In each recovered grassland stand we designated a mown (mown from Year 1 to Year 8) and an abandoned sample site (mown from Year 1 to Year 3 then abandoned from Year 4 to Year 8). Mown and abandoned sites showed divergent vegetation and seed bank development. Abandonment led to the decline of sown grasses and higher cover of weeds, especially in the alkaline grasslands. Our study confirmed that seed bank has a limited contribution to the maintenance of biodiversity in both grassland types. We found that five years of abandonment had a larger effect on the seed bank than on the vegetation. We stress that long-term management is crucial for controlling the emergence of the weeds from their dense seed bank in restored grasslands.Implications for practiceSeed sowing of grass mixtures can be a feasible tool for restoring grasslands at large scales. However, the developed vegetation usually has low biodiversity and a high seed density of weeds is typical in the soil seed bank even several years after the restoration. Therefore, post-restoration management is necessary for suppressing weeds both aboveground and belowground.We recommend to design the long-term management of the sites subjected to grassland restoration already in the planning phase of the restoration projects and ensure that the management plan is ecologically and economically feasible.We recommend to complement the monitoring of vegetation with the analysis of soil seed bank for evaluating restoration success.

scholarly journals Seed bank dynamics in restored grassland following the sowing of high- and low-diversity seed mixtures

2017 ◽  
Vol 26 ◽  
pp. S189-S199 ◽  
Author(s):  
Markus Wagner ◽  
Kevin J. Walker ◽  
Richard F. Pywell
Keyword(s):  
Seed Bank ◽  
Seed Bank Dynamics ◽  
Low Diversity ◽  
Seed Mixtures

SEED BANK DYNAMICS IN A SOUTHEASTERN RIVERINE SWAMP

1986 ◽  
Vol 73 (7) ◽  
pp. 1022-1030 ◽  
Author(s):  
Rebecca L. Schneider ◽  
Rebecca R. Sharitz
Keyword(s):  
Seed Bank ◽  
Seed Bank Dynamics

scholarly journals Lolium multiflorum seeds in the soil: I. Soil seed bank dynamics in a no til system

2008 ◽  
Vol 30 (2) ◽  
pp. 100-110 ◽  
Author(s):  
Fernanda Costa Maia ◽  
Manoel de Souza Maia ◽  
Renée M. Bekker ◽  
Rogério Previatti Berton ◽  
Leandro Sebastião Caetano
Keyword(s):  
Seed Bank ◽  
Management Practices ◽  
Transition Period ◽  
Soil Seed Bank ◽  
Lolium Multiflorum ◽  
Storage Period ◽  
Annual Ryegrass ◽  
Seed Population ◽  
Seed Bank Dynamics ◽  
One Year

The objective of the study was to characterize annual ryegrass seed population dynamics, managed for natural re-sowing, in no til systems in rotation with soybean, in different chronosequences An area was cultivated for two years with soybean, left as fallow land for the next two years and then cultivated again with soybean for the next two years. The four chronosequences represented different management periods, two with soybean (6 and 8 years old) and the other two resting (3 and 9 years old). Soil samples were taken every month during one year and divided into two depths (0-5 and 5-10 cm). Vegetation dynamics were also evaluated (number of plants, inflorescences and seedlings). Soil seed bank (SSB) dynamics showed structural patterns in time, with a "storage period" in summer, an "exhausting period" during autumn and a "transition period" in winter and spring. Pasture establishment by natural re-sowing was totally dependent on the annual recruitment of seeds from the soil. The influence of the management practices on the SSB was more important than the number of years that these practices had been implemented. Places where soybean was sown showed the largest SSBs. Most of the seeds overcame dormancy and germinated at the end of the summer and beginning of the autumn, showing a typically transitory SSB, but with a small proportion of persistent seeds

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