Sustainable management and conservation of resources for different wheat production processes; cumulative exergy consumption approach

2019 ◽  
Vol 28 (4) ◽  
pp. 404 ◽  
Author(s):  
Hasan Yildizhan ◽  
Morteza Taki
Author(s):  
Alain Maasri ◽  
Sonja Jähnig ◽  
Mihai Adamescu ◽  
Rita Adrian ◽  
Claudio Baigun ◽  
...  

Freshwater biodiversity is declining dramatically, and the current biodiversity crisis requires defining bold goals and mobilizing substantial resources to meet the challenges. While the reasons are varied, both research and conservation of freshwater biodiversity lag far behind efforts in the terrestrial and marine realms. We identify fifteen pressing global needs to support informed global freshwater biodiversity stewardship. The proposed agenda aims to advance freshwater biodiversity research globally as a critical step in improving coordinated action towards its sustainable management and conservation.


Author(s):  
Victoriia Mykytenko

A set of resource-functional determinants of sustainable management has been determined, substantiated and formed using the scientific-natural and methodological principles of physical economy. They are represented by various forms of organization, development and transformation of the natural environment in the format of a mega- model of purposeful influence and management of four physiocratic resource bases. They recognized: natural resource processes (material, energy and natural resources); production processes (technological resources); societal processes (information base and social communicative alarm connections); economic processes (organizational and economic resources). The applied tools for determining the order of search, accumulation and involvement of four physiocratic resource bases to ensure and targeted localization of efforts of management entities that take care of key sets of tasks in the field of sustainable management at different levels of management of different dynamic systems. The latter are recognized as territorial natural and economic entities, national and regional socio-economic systems, which currently operate in resource constraints with the ever-increasing socio-political, economic and resource threats and risks to sustainable development of the state and its regions. It is recommended to develop applied tools, permanently refining the sequence of procedures when changing external conditions, through the use of scientific and natural provisions of physical economy, systems theory and turbulence in order to: a) initiate signs of laminarity of four basic processes (economic, social, industrial and natural resource); b) prevention of turbulent shifts. Taking into account the principles of identifying the complexity of the trajectories of the channels and their ability to adjust allowed to establish: the sequence of balancing the turbulent features of the channel of the implementation of processes: natural resources, production, societal, economic, priority of adjustment, first of all, of natural resource and production processes among others.


Caldasia ◽  
2020 ◽  
Vol 42 (2) ◽  
pp. 313-325
Author(s):  
Jorge Prada-Ríos ◽  
Néstor García

Attalea nucifera is an acaulescent palm native of Colombia that is in risk of extinction. Between 2016-2017 we evaluated the structure and density of populations in six localities of the Magdalena river valley, and studied the population dynamic in the locality of Guaduas, Cundinamarca (VC). Although the population structure differs among locations (X2 = 1819, gl = 25, P < 0.05), populations tend to group according to the degree of habitat perturbation. In four localities an inverted J population structure was observed. A matrix population model showed a finite growth rate (λ) of 0.979 (CI95 % = 0.962–0.997). The demographic processes of the permanence of seedlings, sub-adults and young adults show more elasticity. A transient dynamic simulation projected to 30 years shows that under the scenarios of paddock and cattle lopping the population size decrease drastically. The extinction threshold calculated for the population in the locality VC is of 145 years, but paddock and cattle lopping activities can reduce it to less than 40 years. Although Attalea nucifera persists in very disturbing locations in the Middle Magdalena Basin, the results of population dynamics in the locality VC suggest that it could be less tolerant of environmental disturbances. Thus, it is necessary to increase our knowledge of its population dynamics, as well as seed germination and seedling establishment in different disturbance conditions.


Author(s):  
David Lindenmayer ◽  
Mason Crane ◽  
Damian Michael ◽  
Esther Beaton

Australia's little known woodlands once covered huge areas of the eastern side of our continent. Woodlands are distinguished from forests by the fact that their canopies do not touch, tree heights are usually lower and they usually have a grassy understorey. They support a fascinating and diverse array of birds, mammals, reptiles, frogs, invertebrates and plants, and have been under massive pressure from grazing and agriculture over the past 200 years. In many cases only small remnant patches of some types of woodland survive. Understanding and appreciating woodlands is an important way forward for promoting their sustainable management and conservation. Woodlands: A Disappearing Landscape explains with lucid text and spectacular photographs the role that woodlands play in supporting a range of native plants and animals that has existed there for millions of years. The book is set out as a series of logically linked chapters working from the woodland canopy (the tree crowns), through the understorey, the ground layers, and to the lowest lying parts of landscape – wetlands, creeks and dams. Each chapter illustrates many key topics in woodland biology with text and images, explaining important aspects of woodland ecology as well as woodland management and conservation.


2020 ◽  
Vol 67 (2) ◽  
Author(s):  
T. T. Ajith Kumar ◽  
Santosh Kumar ◽  
Kuldeep K. Lal

The length-weight relationship of a newly described catfish Pangasius silasi Dwivedi et. al., 2017 was studied from 88 specimens collected from the native distribution range of the species i.e. Nagarjuna Sagar Dam, Telengana, India. The total length and weight of the sampled fishes ranged from 290 to -590 mm and 240 to 2300 g respectively. Results of regression analysis showed that the regression coefficient (r²) values varied from 0.985 to 0.989. The average condition factor observed was 1.04 and 0.98 for males and females respectively. Positive allometric growth and condition factor of the species indicated the potential of the species for aquaculture. The information generated will also be useful in sustainable management and conservation of the species in natural waters.


2021 ◽  
Vol XXVI (150) ◽  
pp. 32-38
Author(s):  
Juan Carlos Troiano ◽  
Eduardo J. da Silva Borges ◽  
Bianca Coubassier Simões ◽  
Luiz H. G. Riquelme Jr. ◽  
Daniely Ayabe Curcio ◽  
...  

One of the methods used for the conservation of the South American caimans is ranching, a technique for the sustainable management and conservation of the species. It includes environmental and population studies which are followed by the collection of eggs from nature after authorization by the relevant agencies, which are then incubated artificially and fattened for commercial purposes. This process may lead to alterations in the eggs that cause different degrees of congenital anomalies that affect the future life of the animal to a greater or lesser extent. Eggs collected in the natural environment may suffer unfavorable thermal variations, which in certain phases of embryonic development may lead to the appearance of a teratogen. In this work we describe the finding of a parasitic univithelial twin in Caiman yacare. The possible causes of this anomaly and a review of congenital anomalies in crocodiles are described.


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