Grass Mortality and Turnover Following Core Rangeland Restoration Practices

2017 ◽  
Vol 70 (3) ◽  
pp. 290-300 ◽  
Author(s):  
Carissa L. Wonkka ◽  
Jason B. West ◽  
Dirac Twidwell ◽  
William E. Rogers
Keyword(s):  
Rangeland Restoration ◽  
Restoration Practices

Evaluating support for rangeland‐restoration practices by rural Somalis: an unlikely win‐win for local livelihoods and hirola antelope?

2018 ◽  
Vol 22 (2) ◽  
pp. 144-156 ◽  
Author(s):  
A. H. Ali ◽  
R. Amin ◽  
J. S. Evans ◽  
M. Fischer ◽  
A. T. Ford ◽  
...  
Keyword(s):  
Local Livelihoods ◽  
Rangeland Restoration ◽  
Restoration Practices

scholarly journals Wetland Restoration with Hydrophytes: A Review

Plants ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1035
Author(s):  
Maria A. Rodrigo
Keyword(s):  
Wetland Restoration ◽  
Large Scale ◽  
Emergent Plants ◽  
Filamentous Green Algae ◽  
Vital Functions ◽  
Climatic Scenarios ◽  
Restoration Practices ◽  
Natural Wetlands ◽  
Sediment Transfer ◽  
Negative Factors

Restoration cases with hydrophytes (those which develop all their vital functions inside the water or very close to the water surface, e.g., flowering) are less abundant compared to those using emergent plants. Here, I synthesize the latest knowledge in wetland restoration based on revegetation with hydrophytes and stress common challenges and potential solutions. The review mainly focusses on natural wetlands but also includes information about naturalized constructed wetlands, which nowadays are being used not only to improve water quality but also to increase biodiversity. Available publications, peer-reviewed and any public domain, from the last 20 years, were reviewed. Several countries developed pilot case-studies and field-scale projects with more or less success, the large-scale ones being less frequent. Using floating species is less generalized than submerged species. Sediment transfer is more adequate for temporary wetlands. Hydrophyte revegetation as a restoration tool could be improved by selecting suitable wetlands, increasing focus on species biology and ecology, choosing the suitable propagation and revegetation techniques (seeding, planting). The clear negative factors which prevent the revegetation success (herbivory, microalgae, filamentous green algae, water and sediment composition) have to be considered. Policy-making and wetland restoration practices must more effectively integrate the information already known, particularly under future climatic scenarios.

scholarly journals Forest Restoration: Do Site Selection and Restoration Practices Follow Ecological Criteria? A Case Study in Sweden

Forests ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 988
Author(s):  
Anouschka R. Hof ◽  
Anna Zachrisson ◽  
Lina E. Polvi
Keyword(s):  
Site Selection ◽  
Forest Restoration ◽  
Managed Forest ◽  
Initial State ◽  
Study Region ◽  
Ecological Site ◽  
Ecological Criteria ◽  
Restoration Practices ◽  
Intensively Managed ◽  
Surrounding Landscape

The speed with which restoration will, or can, be accomplished depends on the initial state and location of the sites. However, many factors can undermine the process of choosing sites that are deemed the best ecological choice for restoration. Little attention has been paid to whether site selection follows ecological criteria and how this may affect restoration success. We used habitat inventory data to investigate whether ecological criteria for site selection and restoration have been followed, focusing on restoration for the white-backed woodpecker (Dendrocopos leucotos B.) in Sweden. In our study region, which is situated in an intensively managed forest landscape with dense and young stands dominated by two coniferous species, purely ecological criteria would entail that sites that are targeted for restoration would (1) initially be composed of older and more deciduous trees than the surrounding landscape, and (2) be at a scale relevant for the species. Furthermore, restoration should lead to sites becoming less dense and less dominated by coniferous trees after restoration, which we investigated as an assessment of restoration progress. To contextualize the results, we interviewed people involved in the restoration efforts on site. We show that although the first criterion for ecological site selection was largely met, the second was not. More research is needed to assess the motivations of actors taking part in restoration efforts, as well as how they interlink with public efforts. This would allow us to identify possible synergies that can benefit restoration efforts.

Re-imagine Pickering here: a vision for Pickering Nuclear Park

2021 ◽  
Author(s):  
Taylor Alicia Lena Marquis
Keyword(s):  
Power Generation ◽  
Life Cycle ◽  
Ecological Restoration ◽  
Clean Energy ◽  
Industrial Site ◽  
Energy Technology ◽  
The Future ◽  
Clean Energy Technology ◽  
Restoration Practices ◽  
Post Industrial

In 2024, all commercial operations at the Pickering Nuclear Generation Station cease and the station will begin its decommissioning process. Ontario Power Generation is currently looking developing a repurposing strategy for the site throughout the decommissioning process, which is expected to be complete by 2064. This project presents a unique opportunity to re-imagine the future of this site, while setting a precedent for the reuse of nuclear sites and facilities once they have reached the end of their life cycle – an issue that will be more prevalent in the coming years. This project proposes a vision for the site to be transformed into parkland using ecological restoration practices, and establishing a Centre for Clean Energy Technology. Using design as a form of research, the project was informed by background research that included a review of existing literature on post-industrial site redevelopment, precedent studies, and site reconnaissance.

scholarly journals The Case Study of the Medieval Town Walls of Gubbio in Italy: First Results on the Characterization of Mortars and Binders

Heritage ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 468-478 ◽  
Author(s):  
Fernanda Carvalho ◽  
Andreia Lopes ◽  
Antonella Curulli ◽  
Teresa da Silva ◽  
Maria Lima ◽  
...  
Keyword(s):  
Polarized Light ◽  
Ex Situ ◽  
X Ray Diffraction ◽  
X Ray ◽  
Heritage Sites ◽  
First Results ◽  
Restoration Practices ◽  
Climate Events

Good conservation and restoration practices of cultural heritage assets rely on the knowledge of original materials. In the framework of the HERACLES Project (HERACLES—HEritage Resilience Against CLimate Events on Site, H2020 Grant Agreement 700395), dealing with the effects of climatic actions and natural hazards on built heritage, a set of important heritage sites are currently under study to improve their resilience against climate events. Among these are the medieval Gubbio Town Walls in Italy. The present work focuses on the mortars and binders of this monument and collected samples related to different parts of the Walls, corresponding to various historical periods of construction and interventions. They were characterized to determine their minerochemical composition, thermal behavior, and morphology. For that purpose, ex-situ laboratory techniques, such as X-ray diffraction (XRD), wavelength dispersive X-ray fluorescence (WDXRF), optical microscopy (OM), polarized light microscopy (PLM), scanning electron microscopy (SEM), and simultaneous differential thermal analysis and thermogravimetry (TG-DTA) were used to discern trends in different sampling areas due to construction/reconstruction periods and building techniques.

scholarly journals Grazing Exclusion, a Choice between Biomass Growth and Species Diversity Maintenance in Beijing—Tianjin Sand Source Control Project

2019 ◽  
Vol 11 (7) ◽  
pp. 1941 ◽  
Author(s):  
Yuzhe Li ◽  
Jiangwen Fan ◽  
Hailing Yu
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Source Control ◽  
Total Biomass ◽  
Above Ground Biomass ◽  
Grazing Exclusion ◽  
Ground Biomass ◽  
Wiener Diversity Index ◽  
Restoration Practices ◽  
Sand Source

Grasslands in northern China form an important ecological barrier that prevents and controls desertification. The Beijing–Tianjin Sand Source Control (BTSSC) Project has been implemented to restore grassland in order to control sand sourced pollution. This study aimed to understand the impacts of four applied restoration practices on the productivity, composition, and species diversity of vegetation communities in the BTSSC Project. The results indicated the following: (1) All the restoration practices tended to increase the height and cover of communities, and the effect was most obvious where grazing was excluded; (2) total biomass (87%), above-ground biomass (164%) and below-ground biomass (58%) only increased consistently when grazing was excluded from the steppe; (3) fenced and grazing exclusion practice significantly increased the abundance of species in communities, but all the practices tended to decrease the evenness of species; and, (4) the correlation analysis revealed that the Shannon–Wiener diversity index, and Pielou evenness index, showed significant negative correlations with the above-ground biomass of grassland communities after restoration, while no significant relationships were shown in reference plots. Our comparison of applied practices in the BTSSC project revealed that grazing exclusion might be a high priority for more successful restoration in this region.

scholarly journals The Effect of Habitat Structure Boulder Spacing on Near-Bed Shear Stress and Turbulent Events in a Gravel Bed Channel

Water ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1423
Author(s):  
Amir Golpira ◽  
Fengbin Huang ◽  
Abul B.M. Baki
Keyword(s):  
Shear Stress ◽  
Habitat Structure ◽  
Open Channel ◽  
Reynolds Shear Stress ◽  
Three Dimensional ◽  
Quadrant Analysis ◽  
Bed Shear Stress ◽  
Gravel Bed ◽  
Restoration Practices ◽  
Ejections And Sweeps

This study experimentally investigated the effect of boulder spacing and boulder submergence ratio on the near-bed shear stress in a single array of boulders in a gravel bed open channel flume. An acoustic Doppler velocimeter (ADV) was used to measure the instantaneous three-dimensional velocity components. Four methods of estimating near-bed shear stress were compared. The results suggested a significant effect of boulder spacing and boulder submergence ratio on the near-bed shear stress estimations and their spatial distributions. It was found that at unsubmerged condition, the turbulent kinetic energy (TKE) and modified TKE methods can be used interchangeably to estimate the near-bed shear stress. At both submerged and unsubmerged conditions, the Reynolds method performed differently from the other point-methods. Moreover, a quadrant analysis was performed to examine the turbulent events and their contribution to the near-bed Reynolds shear stress with the effect of boulder spacing. Generally, the burst events (ejections and sweeps) were reduced in the presence of boulders. This study may improve the understanding of the effect of the boulder spacing and boulder submergence ratio on the near-bed shear stress estimations of stream restoration practices.

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