scholarly journals Soil mycobiota under managed and unmanaged forests of Nothofagus pumilio in Tierra del Fuego, Argentina

2019 ◽  
Vol 49 ◽  
Author(s):  
Lorena A. Elíades ◽  
Marta N. Cabello ◽  
Verónica Pancotto ◽  
Alicia Moretto ◽  
Natalia A. Ferreri ◽  
...  
Keyword(s):  
Management Practices ◽  
Diversity Index ◽  
Biological Indicators ◽  
Tierra Del Fuego ◽  
Nothofagus Pumilio ◽  
Management Interventions ◽  
Key Factor ◽  
And Control ◽  
The Impact ◽  
Shannon’S Diversity Index

Background: Management practices can modify the productivity of forests and the associated microbial diversity of soil. The soil mycobiota is considered a key factor in the ecological functions of forests. Forests of Nothofagus pumilio (Poepp. & Endl.) Krasser (Nothofagaceae) are the main source of timber and one of the most important economic resources in the province of Tierra del Fuego (Argentina). However, there is no information on the impact of forest management interventions for the soil mycobiota, which can be reliable biological indicators of disturbance.Methods: Fungi were isolated from samples of soil collected under several Nothofagus pumilio forests subjected to different types of management and periods of time since the intervention. Types of management were represented by harvested forest with a shelter wood cutting, stockpile area and control forest without intervention and the periods of time since intervention were 1, 5–10 and 50 years. Species richness, evenness and Shannon’s diversity index of the mycobiota in each condition of management were calculated. Additionally, the effect of seasonality was analysed.Results: The soil mycobiota was represented by 70 taxa. Richness and/or Shannon’s diversity index of the mycobiota between undisturbed forest and stockpile area were higher in May (autumn) than in September or November. There were no differences in mycobiota diversity between dates in the harvested forest.Conclusions: Our results indicate that the forest intervention per se did not negatively affect the soil culturable mycobiota composition of N. pumilio forests in Tierra del Fuego (Argentina).

IMPACT OF WEEDS ON DIVERSITY OF SOIL ARTHROPODS IN Bt COTTON FIELD IN FAISALABAD PAKISTAN

2020 ◽  
Vol 27 (2) ◽  
pp. 119-129
Author(s):  
Iqra Munir ◽  
Abdul Ghaffar ◽  
Asad Aalam ◽  
Muhammad Khuram Shahzad ◽  
Muhammad Jafir
Keyword(s):  
Diversity Index ◽  
Research Area ◽  
Cotton Field ◽  
Control Group ◽  
Bt Cotton ◽  
Soil Arthropods ◽  
And Control ◽  
The Impact ◽  
High Diversity

The present study was conducted to check the impact of weeds on diversity of soil arthropods in Bt cotton field by using RCBD design with four treatments and three replications at Research Area of Department of Entomology, University of Agriculture Faisalabad. Treatments were consisted of different combination of weeds and control group Total 228 samples were collected and from these samples 14 different taxons of soil arthropods were reported and from these taxons, mites showed high diversity index. Maximum diversity of soil arthropods was recorded (H´=2.07) from itsit + sawanki and minimum diversity of soil arthropods was recorded (H´=1.90) from itsit + chulai. Maximum mean richness of soil arthropods ( S=3.18±0.24) was reported from Itsit+chulai, while minimum mean richness of soil arthropods (S=3±0.23) was reported from Control group. Maximum mean abundance of soil arthropods (14.7±4.11) was reported from Itsit+sawanki while minimum mean abundance of soil arthropods (11.5±2.26) was reported from control group.

Air Emissions from the Incineration of Hazardous Waste

1990 ◽  
Vol 6 (5) ◽  
pp. 23-51 ◽  
Author(s):  
E. Timothy Oppelt
Keyword(s):  
Hazardous Waste ◽  
Management Practices ◽  
State Level ◽  
Waste Incineration ◽  
The United States ◽  
Air Emissions ◽  
Operational Experience ◽  
Large Measure ◽  
And Control ◽  
The Impact

In the United States over the last ten years, concern over important disposal practices of the past has manifested itself in the passage of a series of federal and state-level hazardous waste cleanup and control statutes of unprecedented scope. The impact of these various statutes will be a significant modification of waste management practices. The more traditional and lowest cost methods of direct landfilling, storage in surface impoundments and deep-well injection will be replaced, in large measure, by waste minimization at the source of generation, waste reuse, physical/chemical/biological treatment, incinceration and chemical stabilization/solidification methods. Of all of the “terminal” treatment technologies, properly-designed incineration systems are capable of the highest overall degree of destruction and control for the broadest range of hazardous waste streams. Substantial design and operational experience exists and a wide variety of commercial systems are available. Consequently, significant growth is anticipated in the use of incineration and other thermal destruction methods. The objective of this paper is to examine the current state of knowledge regarding air emissions from hazardous waste incineration in an effort to put the associated technological and environmental issues into perspective.

scholarly journals Gender Inequality and Symbolic Violence in Women’s Access to Family Land in the Southern Highlands of Tanzania

Land ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 468 ◽  
Author(s):  
Justin Lusasi ◽  
Dismas Mwaseba
Keyword(s):  
Gender Equality ◽  
Gender Inequality ◽  
Land Management ◽  
Management Practices ◽  
Tree Planting ◽  
Symbolic Violence ◽  
Family Land ◽  
And Control ◽  
The Impact ◽  
Laws And Regulations

We set out to unveil gender inequality with respect to women’s access to family land following the surge in tree-planting in selected villages in the Southern Highlands of Tanzania. Specifically, the study describes land-transaction procedures at the household level and shows how the lack of women’s involvement in such land transactions affect their access to and control over family lands. Gender inequality is portrayed in a variety of social and economic activities, with women being deprived of access to, control over, and ownership of land. Although the current land laws address gender inequalities pertaining to women’s access to, ownership of, and control over land, the impact of such reforms has been minimal. Drawing on Bourdieu’s concept of symbolic violence, we reveal how women suffer symbolic violence through traditional practices of land management and administration. Societies in the studied villages are strongly patriarchal, with men being dominant and women subordinate. In such a patriarchal system, women’s empowerment is urgent. Women require knowledge and awareness of the laws and regulations that affirm their rights not only to family lands, but also to participation in decision-making processes regarding family assets. We recommend non-oppressive approaches to natural-resource management. As such, we call for existing authorities at the village and district levels, Non Governmental Organisations (NGOs) and legal bodies to promote gender equality in land-management practices. We also advocate dialectical communication between women and men in order to reveal and heal practices of symbolic violence, and enhance gender equality in respect of access to land and its control and ownership in villages in the Southern Highlands of Tanzania. Effective implementation of existing land laws and regulations that address gender inequality and associated violence is unavoidable.

Biological indicators of soil quality in organic farming systems

2009 ◽  
Vol 24 (4) ◽  
pp. 308-318 ◽  
Author(s):  
E.A. Stockdale ◽  
C.A. Watson
Keyword(s):  
Organic Farming ◽  
Soil Quality ◽  
Management Practices ◽  
Farming Systems ◽  
Biological Indicators ◽  
Current Evidence ◽  
Conventional Agriculture ◽  
Biological Quality ◽  
Organic Farming Systems ◽  
The Impact

AbstractThe health of the soil, recognized by its active role in the linked processes of decomposition and nutrient supply, is considered as the foundation of agriculture by the organic farming movement. Nutrient management in organically managed soils is fundamentally different from that of conventional agricultural systems. Crop rotations are designed with regard to maintenance of fertility with a focus on nutrient recycling. Where nutrients are added to the system, inputs are in organic and/or non-synthetic fertilizer sources that are mostly slow release in nature. Hence a greater reliance is placed on soil chemical and biological processes to release nutrients in plant-available forms. In this respect, nutrient availability in organically farmed soils is more dependent upon soil processes than is the case in conventional agriculture. The development and use of biological indicators of soil quality may therefore be more important in organic (and other low input) farming systems. The aim of this paper is to evaluate current evidence for the impact of organic farming systems on soil biological quality and consider the identification of appropriate biological indicators for use by organic farmers and their advisors. Organic farming systems are generally associated with increased biological activity and increased below-ground biodiversity. The main impacts on biological fertility do not result from the systemsper sebut are related to the amount and quality of the soil organic matter pool and disruptions of soil habitat via tillage. Even within the constraints of organic farming practices it is possible for farmers to make changes to management practices which will tend to improve soil biological quality. It is, however, by no means clear that distinct indicators of soil biological quality are needed for organic farming systems. It is important not only to identify the most appropriate indicators but also to ensure that farmers and land managers can understand and relate to them to support on-farm management decisions.

scholarly journals Multiple comparisons of diversity indices invaded by Lantana camara

2020 ◽  
Author(s):  
H. Qureshi ◽  
T. Anwar ◽  
N. Habib ◽  
Q. Ali ◽  
M. Z. Haider ◽  
...  
Keyword(s):  
Species Richness ◽  
Diversity Index ◽  
Diversity Indices ◽  
Lantana Camara ◽  
Native Plant ◽  
Heterogeneous Nature ◽  
Significant Magnitude ◽  
Native Plant Diversity ◽  
And Control ◽  
The Impact

Abstract Current study assessed the impact of Lantana camara invasion on native plant diversity in Pothohar region of Pakistan. The approach used for study was random samplings and comparisons of diversity indices [number of species (S), abundance (N), species richness (R), evenness (Jꞌ), Shannon diversity index (Hꞌ) and Simpson index of dominance (λ)] with two categorical factors i.e., invaded and non-invaded (control). Control plots harboured by an average of 1.74 more species/10m2. The control category was diverse (Hꞌ=2.56) than invaded category (Hꞌ=1.56). The higher value of species richness in control plots shows heterogeneous nature of communities and vice versa in invaded plots. At multivariate scale, ordination (nMDS) and ANOSIM showed significant magnitude of differences between invaded and control plots at all sites. The decrease in studied diversity indices in invaded over control sites indicated that plant communities become less productive due to Lantana invasion.

Behavioural diversity as a potential welfare indicator for professionally managed chimpanzees (Pan troglodytes): Exploring variations in calculating diversity using species-specific behaviours

2021 ◽  
Vol 30 (4) ◽  
pp. 381-392
Author(s):  
K Hall ◽  
J Bryant ◽  
M Staley ◽  
JC Whitham ◽  
LJ Miller
Keyword(s):  
Pan Troglodytes ◽  
Diversity Index ◽  
Immunoglobulin A ◽  
Diversity Indices ◽  
Human Interaction ◽  
Faecal Glucocorticoid Metabolites ◽  
Stereotypic Behaviour ◽  
The Impact ◽  
Shannon’S Diversity Index ◽  
Behavioural Diversity

Behavioural diversity may serve as a positive indicator of animal welfare that can be applied in long-term monitoring schemes in managed settings (eg zoos, laboratories, farms). Behavioural diversity is often higher when animals live in stimulating environments and experience positive events. Unfortunately, welfare researchers have not adopted consistent, standardised approaches to measuring behavioural diversity. The goal of this exploratory study was to utilise data from 41 adult chimpanzees (Pan troglodytes) housed across 16 zoological institutions to examine various models of Shannon's Diversity Index. Specifically, we investigated the impact of: combining versus splitting behaviours, including only positive behaviours, including human interaction, and considering recipient behaviours. We evaluate how the inclusion or exclusion of different behaviours impacts the relationship of behavioural diversity with: (i) concentrations of faecal glucocorticoid metabolites (GCM), a common indicator of adrenal activity; (ii) concentrations of immunoglobulin-A (IgA), an indicator of immune function and potential indicator of positive welfare; and (iii) stereotypic behaviour, a validated indicator of poor welfare. Most indices had significant negative relationships with faecal GCM. Animals that express a variety of behaviours from their species-typical repertoire have lower average faecal GCM concentrations and are likely experiencing better welfare. We did not find significant relationships between the behavioural diversity indices and IgA concentrations. Two indices were inversely associated with stereotypic behaviour. Our findings provide additional support for using Shannon's Diversity Index to calculate behavioural diversity as a robust, valid measure of positive welfare. However, future publications must justify the process for including or excluding behaviours from calculations.

The impact of strategic planning on the competitiveness, performance and effectiveness of bank branches: a neural network analysis

2002 ◽  
Vol 20 (3) ◽  
pp. 102-110 ◽  
Author(s):  
L. Moutinho ◽  
P.A. Phillips
Keyword(s):  
Neural Network ◽  
Strategic Planning ◽  
Distribution System ◽  
Management Practices ◽  
Bank Branch ◽  
Marketing Effectiveness ◽  
Overall Performance ◽  
And Control ◽  
The Impact

The banking distribution system is going through a rapid process of change. This research study focuses on the analysis of the perceptions, of 58 bank branch managers selected from 14 branches belonging to two major Scottish banks, of the impact of a variety of planning practices on competitiveness, overall performance, strategic planning effectiveness and marketing effectiveness. The gathered data were then subjected to a number of learning iterations as part of a specifically designed neural network topology. Major findings derived from the study revealed that: bank branch effectiveness is affected by effective management practices; the overall performance of the branch depends highly on both long term thinking and innovation; long‐term thinking seems to have also a high degree of impact on strategic planning effectiveness; and finally, the degree of precision attached to planning, programming, budgeting and control seems to trigger high levels of marketing effectiveness.

scholarly journals List of bee species (Hymenoptera, Apoidea) of Lviv city (Ukraine). Part II: Families Colletidae Lepeletier, 1841; Halictidae Thomson, 1869; Megachilidae Latreille, 1802 and Melittidae Michener, 2000

2020 ◽  
Vol 14 (4) ◽  
pp. 59-68
Author(s):  
I. P. Skyrpan ◽  
◽  
S. R. Pytel ◽  
Keyword(s):  
Species Diversity ◽  
Diversity Index ◽  
Zoological Museum ◽  
National University ◽  
Western Ukraine ◽  
Impact Of Urbanization ◽  
The Impact ◽  
First Time ◽  
The City ◽  
Shannon’S Diversity Index

Background. The article presents the results of the research on bees (Hymenoptera, Apoidea) that occur in the city of Lviv. Bees are one of the most important pollinators of many species of angiosperm plants. Research on species diversity of bees is very important not only on the wild nature territories, but also on the urbanized areas. Cities have a significant impact on bee species diversity, their biology and conservation. A comprehensive study of all Apoidea on the whole territory of the city of Lviv has been conducted for the first time in more than 80 years and we hope that the presented materials will lay the foundation for further more detailed studies in this area. Materials and Methods. Lviv is the largest city in Western Ukraine located on the eastern edge of the Roztochia Upland. The material was collected during the warm period of 2017–2019. The Moericke (yellow) pan traps and the entomological nets were used. Besides, we collected dead bees (killed by traffic) along the roads. W have analyzed the entomological collection of the Zoological Museum of the Ivan Franko National University [ZMD] (Lviv). The stereoscopic microscope and a variety of specialized keys for bee species identification were used. We used the Shannon’s diversity index to assess species diversity. We also calculated the Shannon evenness measure to facilitate the interpretation of the results. Results. We analyzed 960 specimens of bees that belong to 106 species, 25 genera and 6 families. The current (second) part of our study deals with review of the Colletidae (3 species), Halictidae (22 species), Megachilidae (11 species) and Melittidae (5 species) families. Species diversity of the bees from Andrenidae and Apidae families was analyzed in previous (first) the part of our research [27]. Conclusions. All species from the six families are native for the territory of Europe. The majority of them are polylectic (≈ 61 %), while the number of oligolectic species (≈ 23 %), or species that do not need to collect pollen (≈ 16 %) is much smaller. The Shannon’s diversity index is approx. 3.718 and the Shannon evenness measure is 0.799 (the honeybee Apis mellifera was excluded in both calculations). Analysis of the impact of urbanization and various environmental factors on the species diversity of bees requires further detailed studies. Keywords: bees, species diversity, Lviv, Ukraine

scholarly journals Impact of Weed Management Practices on Yield Attributes, Economics and Phytotoxicity of Kharif Maize

2021 ◽  
pp. 42-49
Author(s):  
Y. Lavanya ◽  
K. Srinivasan ◽  
C. R. Chinnamuthu ◽  
P. Murali Arthanari
Keyword(s):  
Weed Management ◽  
Tamil Nadu ◽  
Management Practices ◽  
Block Design ◽  
Maize Crop ◽  
Yield Attributes ◽  
Randomized Block Design ◽  
Hand Weeding ◽  
And Control ◽  
The Impact

A field experiment was conducted during 2018 and 2019 at Tamil Nadu Agricultural University, Agriculture College and Research Institute, Coimbatore to study the impact of weed management practices on yield attributes, economics and phytotoxicity of kharif maize. Ten treatments were tested in randomized block design with three replications viz., pre emergence (PE) atrazine at 0.5 kg a.i. ha-1 fb hand weeding (HW) at 20 DAS, PE atrazine at 0.5 kg a.i. ha-1 fb power weeder (PW) at 20 DAS, PE atrazine at 0.5 kg a.i. ha-1 + pendimethalin at 1 kg a.i. ha-1 (Tank mix), PE atrazine at 0.5 kg a.i. ha-1 + pendimethalin at 1 kg a.i. ha-1 fb HW at 20 DAS, early post emergence (EPoE) topramezone at 25.2 g a.i. ha-1, PE atrazine at 0.5 kg a.i. ha-1 fb EPoE topramezone at 25.2 g a.i. ha-1, EPoE tembotrione at 122 g a.i. ha-1, PE atrazine 0.5 kg a.i. ha-1 fb EPoE tembotrione 122 g a.i. ha-1, hand weeding twice at 20 and 45 DAS and control (weedy check). Among the different weed management practices significantly higher yield attributes viz., cob length, cob girth, weight of cob, No. of grain rows cob-1, No. of grains cob-1, grain yield cob-1 was found with hand weeding twice at 20 and 45 DAS and it was at par with atrazine at 0.5 kg a.i. ha-1 as PE  fb topramezone at 25.2 g a.i. ha-1 as EPoE and atrazine at 0.5 kg a.i. ha-1 as PE + tembotrione at 122 g a.i. ha-1 as EPoE. Maximum net return and B:C ratio were recorded under atrazine at 0.5 kg a.i. ha-1 as PE fb topramezone at 25.2 g a.i. ha-1 as EPoE followed by atrazine at 0.5 kg a.i. ha-1 as PE + tembotrione at 122 g a.i. ha-1 as EPoE. However, among the different herbicidal treatments used, all the herbicidal treatments were found to be safe to the maize crop without any caused phototoxic effect on maize during both the years of experimentation. Now-a-days, increased labour scarcity and costs are encouraging farmers to adopt labour and cost- saving options by using chemical method.

scholarly journals Review of Lessons Learned in Changing Agricultural Landscapes in Ethiopia: What Worked Well and What Didn’t Work so Well?

2020 ◽  
Author(s):  
Amare Haileslassie ◽  
Wolde Mekuria ◽  
Petra schmitter ◽  
Stefan Uhlenbrook ◽  
Eva Ludi
Keyword(s):  
Water Management ◽  
Management Practices ◽  
Local Community ◽  
Agricultural Landscape ◽  
Economic Benefits ◽  
Agricultural Landscapes ◽  
Lessons Learned ◽  
Management Interventions ◽  
Land And Water Management ◽  
The Impact

Ethiopia has decades of experience in implementing land and water management interventions. Nonetheless, there remains persisting challenges to follow an adaptive management (AM) approach in efforts of restoring and transforming agricultural landscapes. This review was carried out to synthesize evidences on the impact on agricultural landscapes following the implementation of land and water management practices and to evaluate the use of AM approaches. We explored how elements of the structures and functions of landscapes have been transformed, and how the components of AM, such as structured decision-making and learning processes, have been applied. Despite numerous environmental and economic benefits of land and water management interventions in Ethiopia, this review revealed gaps in AM approaches. These include: (i) insufficient efforts in relation to evidence based contextualization of interventions, (ii) insufficient efforts in monitoring of bio-physical and socio-economic processes and changes post implementation, (iii) lack of trade-off analyses, and (iv) inadequacy of local community engagement and provision of feedback. Given the many uncertainties we must deal with, efforts to restore and transform agricultural landscapes cannot follow a business-as-usual approach. Future investment, in AM approach, tailored to the needs and context would help to achieve the goals of sustainable agricultural landscape transformation. The success depends on three interdependent pillars of action: the ability to make a robust, co-developed plan of interventions, the ability to continuously monitor changes based on key variables, and to learn from the knowledge generated and apply the learning as implementation evolves.

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