— Environmental Recovery

2015 ◽  
pp. 152-185
Keyword(s):  
Environmental Recovery

scholarly journals REPRODUCTIVE SYSTEM AND POLLEN FLOW IN PROGENIES OF Qualea grandiflora Mart., A TYPICAL SPECIES OF THE BRAZILIAN CERRADO

2015 ◽  
Vol 39 (2) ◽  
pp. 337-344 ◽  
Author(s):  
Lia Maris Orth Ritter Antiqueira ◽  
Paulo Yoshio Kageyama
Keyword(s):  
Reproductive System ◽  
Random Mating ◽  
Point Of View ◽  
Dispersion Pattern ◽  
Brazilian Cerrado ◽  
Fixation Rate ◽  
Pollen Dispersion ◽  
Typical Species ◽  
Environmental Recovery ◽  
Self Fertilization

This study analyzed the reproductive system and the pollen dispersion pattern of Qualea grandiflora progenies. This is a typical species from the Brazilian Cerrado about which there are not too many studies from the genetics point of view. The study was conducted in an area of 2.2 hectares located in the Conservation Unit managed by the Forest Institute of the state of São Paulo, Brazil (Assis State Forest). Total genomic DNA of 300 seeds from 25 plants (12 seeds from each plant) was extracted and amplified using specific primers to obtain microsatellite markers. Results showed that selfing is frequent among adults and progenies, and the species reproduces by outcrossing between related and unrelated individuals (0.913). The single-locus outcrossing rate was 0.632, which indicates that mating between unrelated individuals is more frequent than between related plants. The selfing rate was low (0.087), that is, the species is allogamous and self-fertilization is reduced. About 35% of the plants in the progenies were full-sibs, and about 57%, half-sibs. Besides, about 8% of the progenies were selfing siblings. The genetic differentiation coefficient within progenies was 0.139, whereas the fixation rate was about 27%. The estimate of the effective size revealed that the genetic representativeness of descent was lower than expected in random mating progenies: The analyzed samples corresponded to only 13.2 individuals of an ideal panmictic population. In environmental recovery programs, seeds, preferably from different fruits, should be collected from 95 trees to preserve the genetic diversity of the species.

Quality improvement of biosolids by ferrate(VI) oxidation of offensive odour compounds

1996 ◽  
Vol 33 (3) ◽  
pp. 119-130 ◽  
Author(s):  
Allen C. Chao ◽  
Sergio J. de Luca ◽  
Carlos N. Idle
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Potassium Ferrate ◽  
Sulphur Compounds ◽  
Environmental Recovery ◽  
Oxidizing Power ◽  
Aldehydes And Ketones ◽  
High Concentrations ◽  
By Products

Studies concerning the treatment, stabilization and final disposal of biosolids, one of the by-products of wastewater treatment, in environmental recovery, have been intensified by the sanitary and environmental effects of land disposal. The careful assessment of biosolid quality shows that, when appropriately managed, the environmental risks of their uses can be minimized by chemical stabilization, and biosolids could even be used as fertilizer and soil conditioner. A research study of biosolid stabilization was performed using lime as a standard process compared to potassium ferrate (VI). The chances of leaching and solubilization of metals were tested, simulating conditions for disposal in the environment. The sanitary effectiveness in terms of pathogens (bacteria, fungi and helminth eggs) were also evaluated. Experiments were performed on the lime and ferrate(VI) treatment of compounds such as ammonia, nitrate, soluble sulphides, and total sulphates, indicators of odouriferous offensive compounds which might occasionally prevent some uses of the solids, and the results are presented in this paper. Wastewater Treatment Plants emit offensive odours generated during the sewage treatment process, as well as during the treatment and the management of biosolids. This occurs in the drying beds and the spreading of biosolids on land, due to the high concentrations of sulphur compounds, nitrogen compounds, acids and organic compounds (aldehydes and ketones). The potassium ferrate(VI) utilized in the research is a powerful oxidizing agent throughout the pH scale, with the advantage of not generating by-products which will cause toxicity or mutagenicity (DE LUCA, 1981). The ion ferrate(VI) has greater oxidizing power than permanganate, e.g., it oxidizes reduced sulfur forms to sulphate, ammonia to nitrate, hypochlorite to chlorite and chlorite to chlorate(DE LUCA et al., 1992; CHAO et al., 1992). This paper shows that, as expected, the potassium ferrate (VI) treatment replaces several chemical products utilized for odour control of sludges, mainly aggressive odours caused by ammonia and sulphides, through the formation of precipitates with iron compounds. Ferrate (VI) has often been shown to destroy soluble sulphides, transforming them into sulphate. The generation of oxygen in the decomposition of ferrate(VI) increases its oxidizing power. Ferrate(VI) applied to sludges also has the double effect of transforming ammonia into nitrates, such that this product takes the place of sulphates, acting as an electron acceptor, thus preventing the development of further odours when biosolids are utilized.

scholarly journals CHEMICAL AND MICROBIOLOGICAL ATTRIBUTES UNDER DIFFERENT SOIL COVER

CERNE ◽  
2017 ◽  
Vol 23 (1) ◽  
pp. 19-30 ◽  
Author(s):  
Elaine Novak ◽  
Laércio Alves Carvalho ◽  
Etenaldo Felipe Santiago ◽  
Irzo Isaac Rosa Portilho
Keyword(s):  
Soil Quality ◽  
Private Property ◽  
Microbial Biomass Carbon ◽  
Principal Component ◽  
Basal Respiration ◽  
Exchange Capacity ◽  
Native Vegetation ◽  
Mato Grosso ◽  
Environmental Recovery ◽  
Short Period

ABSTRACT A challenge for the environmental recovery of degraded areas is the search for soil data. In this process, the microbiological parameters and soil chemicals are potential indicators of soil quality. This study aimed to evaluate soil quality based on microbiological and chemical soil attributes in different areas involving environmental recovery, sugarcane cultivation and remnants of native vegetation located in a rural private property farm in State of Mato Grosso do Sul, Brazil, in Hapludox Eutrophic soil. The microbiological (microbial biomass carbon, basal respiration, microbial quotient and metabolic quotient) and chemical parameters (organic matter, carbon, pH, cationic exchange capacity, sum of bases, potassium, phosphorus, magnesium, calcium, saturation base and potential acidity) were assessed. Data were assessed by variance and multivariate analysis (Principal Component Analysis and cluster analysis). Overall, the results showed highest alteration in the chemical and microbiological characteristics of the soil in sugarcane cultivation area in comparison with other areas. Considering the studied recovery areas, REC1, REC5 and REC7 show chemical and microbiological conditions with most similarity to native vegetation. Despite the short period of the resilience enhancement of environmental recovery areas, the development of vegetation cover and establishment of the microbial community were determined to be important factors for improving soil quality and environmental recovery in several of the areas studied.

scholarly journals Mapping of priority areas for environmental recovery of Rio Pomba city, Minas Gerais

2020 ◽  
Vol 13 (4) ◽  
pp. 1792
Author(s):  
Jaqueline Aparecida de Oliveira ◽  
Jeniffer Barroso da Silva ◽  
Kleber Mariano Ribeiro ◽  
Flávia Monteiro Coelho Ferreira ◽  
Roselir Ribeiro da Silva
Keyword(s):  
Minas Gerais ◽  
Priority Areas ◽  
Environmental Recovery

scholarly journals Integrating Food Culture with Socio-Environmental Recovery: Case Study Perspectives from the Global South

Humanities ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 134
Author(s):  
Lea Rekow
Keyword(s):  
Urban Communities ◽  
Low Income ◽  
Food Systems ◽  
Local Level ◽  
Food Culture ◽  
Environmental Restoration ◽  
Negative Effects ◽  
Marginalized Communities ◽  
Restoration Planning ◽  
Environmental Recovery

This paper discusses how local-level food systems, social remediation and environmental restoration can be linked to increase stability and build resilience inside extremely vulnerable communities. Specifically, it details how food culture entwines with socio-environmental restoration to benefit three low-income urban and peri-urban communities located in Thailand, India and Brazil. It aims to add to an existing body of knowledge that resides at the nexus of food, socio-environmental restoration and informality. It details effective, proven initiatives that have been regionally replicated to support marginalized communities to better cope with the negative effects of simultaneous stressors. It posits that imaginative visioning can be applied to simultaneously cultivate food security, remediate neglected lands and improve socio-economic opportunity. It provides a contribution to the field of social-ecological restoration planning in relation to food studies in lowest-income contexts.

scholarly journals Modelling scenarios of environmental recovery after implementation of controls on emissions of persistent organic pollutants

2020 ◽  
Vol 22 (9) ◽  
pp. 1865-1876
Author(s):  
S. D. W. Comber ◽  
M. J. Gardner ◽  
C. Constantino ◽  
S. Firth ◽  
A. Hargreaves ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Environmental Recovery ◽  
Over Time

Predictions of BaP concentrations in biota decreasing towards the EQS over time.

scholarly journals COVID-19 pandemic impacts on global inland fisheries

2020 ◽  
Vol 117 (47) ◽  
pp. 29419-29421
Author(s):  
Gretchen L. Stokes ◽  
Abigail J. Lynch ◽  
Benjamin S. Lowe ◽  
Simon Funge-Smith ◽  
John Valbo‐Jørgensen ◽  
...  
Keyword(s):  
Online Survey ◽  
Inland Fisheries ◽  
Food And Agriculture ◽  
Global Pandemic ◽  
Food And Agriculture Organization ◽  
Environmental Recovery ◽  
Fish Catch ◽  
Global North ◽  
Production Value ◽  
Perceived Impacts

The COVID-19 pandemic has led to environmental recovery in some ecosystems from a global “anthropause,” yet such evidence for natural resources with extraction or production value (e.g., fisheries) is limited. This brief report provides a data-driven global snapshot of expert-perceived impacts of COVID-19 on inland fisheries. We distributed an online survey assessing perceptions of inland fishery pressures in June and July 2020 to basin-level inland fishery experts (i.e., identified by the Food and Agriculture Organization of the United Nations across the global North and South); 437 respondents from 79 countries addressed 93 unique hydrological basins, accounting for 82.1% of global inland fish catch. Based on the responses analyzed against extrinsic fish catch and human development index data, pandemic impacts on inland fisheries 1) add gradation to the largely positive environmental narrative of the global pandemic and 2) identify that basins of higher provisioning value are perceived to experience greater fishery pressures but may have limited compensatory capacity to mitigate COVID-19 impacts along with negative pressures already present.

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