Long‐term seed bank dynamics in a temperate forest under conversion from coppice‐with‐standards to high forest management

2008 ◽  
Vol 11 (2) ◽  
pp. 251-260 ◽  
Author(s):  
Hans Calster ◽  
Richard Chevalier ◽  
Bram Wyngene ◽  
Frédéric Archaux ◽  
Kris Verheyen ◽  
...  
Keyword(s):  
Forest Management ◽  
Seed Bank ◽  
Temperate Forest ◽  
Seed Bank Dynamics ◽  
Coppice With Standards

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.

Modeling effects of spatial patterns on the seed bank dynamics ofAlopecurus myosuroides

Weed Science ◽  
1999 ◽  
Vol 47 (6) ◽  
pp. 697-705 ◽  
Author(s):  
J. L. Gonzalez-Andujar ◽  
J. N. Perry ◽  
S. R. Moss
Keyword(s):  
Spatial Pattern ◽  
Seed Bank ◽  
Rank Order ◽  
Initial Density ◽  
Yield Losses ◽  
Economic Threshold ◽  
Alopecurus Myosuroides ◽  
Seed Bank Dynamics ◽  
Infestation Pattern

A spatially explicit metapopulation neighborhood model was extended to encompass the seed bank dynamics of the annual weedAlopecurus myosuroidesHuds. (blackgrass), growing in U.K. winter wheat crops established after noninversion tillage. The effects of the initial spatial pattern of infestation, herbicide, and combine harvesting on seed bank densities and on expected yield losses of the infested crop were studied within a 634 m2area. In the absence of herbicide, all seed bank populations were large and typical of values in the literature; those with patchy initial distributions spread quickly over the entire field. The effects of intraspecific competition ensured that even after 10 yr, the average seed bank density from three patterns with the same initial density consistently retained the same rank order: the initially uniform pattern consistently ranked largest; a patchily distributed moderate infestation ranked next; a more patchily distributed heavy infestation ranked least. Expected grain yield losses sometimes exceeded 40%. With the introduction of a herbicide, seed densities declined exponentially, but the rank order with regard to spatial pattern remained. Relatively dense patches occasionally persisted for longer than 10 yr. The economic threshold for treatment was achieved within 2 and 5 yr, depending on the infestation pattern, but the model predicted that it would take many more than 10 yr before infestations could be completely eliminated. The effects of harvesting by combine were modeled. In all cases, the speed of the spread of infestation along a row appeared to be largely due to the combine rather than to natural dispersal or other cultivation practices. The proportion of seeds removed by the combine was an important determinant of the number of years required to drive the population below the economic threshold and of the probability of long-term eradication of the weed metapopulation.

scholarly journals Effects of Waves and Sediment Disturbance on Seed Bank Persistence at Tidal Flats

2021 ◽  
Vol 8 ◽  
Author(s):  
Zhenchang Zhu ◽  
Tjeerd J. Bouma ◽  
Qin Zhu ◽  
Yanpeng Cai ◽  
Zhifeng Yang
Keyword(s):  
Climate Change ◽  
Seed Bank ◽  
Large Scale ◽  
Environmental Changes ◽  
Tidal Flats ◽  
Coastal Vegetation ◽  
Climate Change Effects ◽  
Sediment Disturbance ◽  
Seed Bank Dynamics

Coastal wetlands such as salt marshes have been increasingly valued for their capacity to buffer global climate change effects, yet their long-term persistence is threatened by environmental changes. Whereas, previous studies largely focused on lateral erosion risk induced by stressors like sea level rise, it remains poorly understood of the response of lateral expansion to changing environments. Seedling establishment is a key process governing lateral marsh expansion as seen in many coastal regions such as Europe and East Asia. Here, we evaluate mechanistically the response of seed bank dynamics to changing physical disturbance at tidal flats, using the globally common coastal foundation plant, cordgrass as a model. We conducted a large-scale field study in an estuary in Northwest Europe, where seed bank dynamics of cordgrass in the tidal flats was determined and linked to in situ hydrodynamics and sediment dynamics. The results revealed that wave disturbance reduced the persistence of seeds on the surface, whereas amplified sediment disturbance lowered the persistence of both surface and buried seeds. Overall, this indicates that increasing storminess and associated sediment variability under climate change threatens seed bank persistence in tidal flats, and hence need urgently be incorporated into models for long-term bio-geomorphological development of vegetated coastal ecosystems. The knowledge gained here provides a basis for more accurate predictions on how climatically driven environmental changes may alter the fitness, resilience and persistence of coastal foundation plants, with significant implications for nature-based solutions with coastal vegetation to mitigate climate change effects.

Weed seed bank dynamics responses to long‐term chemical control in a rice–wheat cropping system

2020 ◽  
Vol 76 (6) ◽  
pp. 1993-2003
Author(s):  
Pinglei Gao ◽  
Zheng Zhang ◽  
Junming Shen ◽  
Yuxiang Mao ◽  
Shouhui Wei ◽  
...  
Keyword(s):  
Seed Bank ◽  
Chemical Control ◽  
Cropping System ◽  
Weed Seed ◽  
Seed Bank Dynamics

scholarly journals The influence of mountain temperate forests on the hydrology in northeast China

2003 ◽  
Vol 79 (2) ◽  
pp. 297-300 ◽  
Author(s):  
Xiaohua Wei ◽  
Xiaofeng Zhou ◽  
Chuankuan Wang
Keyword(s):  
Forest Management ◽  
Northeast China ◽  
Temperate Forest ◽  
Temperate Forests ◽  
Spatial Scales ◽  
Management Strategies ◽  
Forest Hydrology ◽  
Surface Flows ◽  
Mongolian Oak

Presented is a review of results from long-term hydrological studies at the Mao-Er-Shan ecological station in northeast China. In comparison to harvested watersheds in northeast China, unlogged temperate forests reduced peak discharge and surface flows at all observed watershed scales (2m2 to > 10 000 ha). However, no consistent patterns on low flows and annual mean flows were observed. The reason for the inconsistency is unclear and may be due to the utilization of different methodologies applied at the various spatial scales. We also found that stemflow is an important mechanism for Mongolian oak (Quercus mongolica Fisch) to adapt to nutrient-poor and dry soils. These results are important for developing forest management strategies and reforestation programs in northeast China. Key words: Temperate forest, hydrology, stemflow, interception, streamflow, evapotranspiration

scholarly journals Fungus-assisted reintroduction and long-term survival of two Mexican terrestrial orchids in the natural habitat

Lankesteriana ◽  
2015 ◽  
Vol 7 (1-2) ◽  
Author(s):  
Pilar Orega-Larrocea ◽  
Mónica Rangel-Villafranco
Keyword(s):  
Genetic Diversity ◽  
Seed Bank ◽  
Natural Habitat ◽  
Ecological Studies ◽  
Term Survival ◽  
Long Term Survival ◽  
Symbiotic Fungus ◽  
Seed Bank Dynamics ◽  
Terrestrial Orchids

Preservation of genetic diversity of orchids for con- servation and restoration purposes is now a feasible practice after the ecological studies of seed bank dynamics made by several investigators (Batty et al. 2001, Whigham et al. 2006). However, few studies have demonstrated the reliability of reintroduction of several species into their natural habitat and less, managing symbiotic fungus (Ramsay and Dixon 2003, Zettler et al. 2003).

Planning a system of permanent sample plots for integrated long-term studies of community-based forest management

1970 ◽  
Vol 16 (2) ◽  
pp. 3-11 ◽  
Author(s):  
H Meilby ◽  
L Puri ◽  
M Christensen ◽  
S Rayamajhi
Keyword(s):  
Forest Management ◽  
Key Words ◽  
Research Note ◽  
Managed Forests ◽  
Community Based ◽  
Permanent Sample Plots ◽  
Long Term Studies

To monitor the development of four community-managed forests, networks of permanent sample plots were established in 2005 at sites in Chitwan, Kaski and Mustang Districts, Nepal. This research note documents the procedures used when preparing for establishment of the plot networks, evaluates the applied stratification of the forest on the basis of data gathered in pilot surveys conducted in the early 2005, and provides a discussion on the implications of the choices made. Key words: Community-managed forests; permanent sample plots; stratification; allocation; estimates Banko Janakari Vol.16(2) 2006 pp.3-11

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
Sign in / Sign up

Export Citation Format

Share Document