scholarly journals Modeling the effect of deforestation caused by human population pressure on wildlife species

2018 ◽  
Vol 23 (3) ◽  
pp. 303-320 ◽  
Author(s):  
Kusum Lata ◽  
◽  
Arvind Kumar Misra ◽  
Jang Bahadur Shukla ◽  
◽  
...  
Keyword(s):  
Human Population ◽  
Population Pressure ◽  
Wildlife Species

scholarly journals Population Backfire: Hindsight to Malthusian Catastrophe

2020 ◽  
Vol 8 (1) ◽  
pp. 121-126
Author(s):  
R Ramya ◽  
C C Babu ◽  
P Akshay
Keyword(s):  
Food Supply ◽  
Human Population ◽  
Future Generation ◽  
Population Pressure ◽  
Basic Tenet ◽  
Sufficient Food Supply ◽  
Per Capita ◽  
Sufficient Food ◽  
Global Population ◽  
Malthusian Trap

The basic tenet of Economics lies in the scarcity principle and unlimited nature of human wants, but allocating a definite amount of resources to satisfy the growing per capita needs in an economy is a difficult task. Things become more complicated when the population pressure generates backfire. The global population has increased to 7.8 billion, and it is essential to ensure sufficient food supply for the growing human population as well as for other species without destroying ecological balance is a serious matter to consider. An evaluation of Malthusian population theories has great importance in this context. This paper intends to analyze the Malthusian theory of population and what happens if population backfire happens and also looks into the intensity of positive checks on population along with the Malthusian trap and its effect on the present as well as the future generation.

scholarly journals Survey of peridomestic mammal susceptibility to SARS-CoV-2 infection

2021 ◽  
Author(s):  
Angela M. Bosco-Lauth ◽  
J. Jeffrey Root ◽  
Stephanie M. Porter ◽  
Audrey E. Walker ◽  
Lauren Guilbert ◽  
...  
Keyword(s):  
Knowledge Base ◽  
Human Population ◽  
Ground Squirrels ◽  
Prairie Dogs ◽  
Deer Mice ◽  
House Mice ◽  
Wild Animals ◽  
Wildlife Species ◽  
Fox Squirrels ◽  
Striped Skunks

AbstractWild animals have been implicated as the origin of SARS-CoV-2, but it is largely unknown how the virus affects most wildlife species and if wildlife could ultimately serve as a reservoir for maintaining the virus outside the human population. Here we show that several common peridomestic species, including deer mice, bushy-tailed woodrats, and striped skunks, are susceptible to infection and can shed the virus in respiratory secretions. In contrast, we demonstrate that cottontail rabbits, fox squirrels, Wyoming ground squirrels, black-tailed prairie dogs, house mice, and racoons are not susceptible to SARS-CoV-2 infection. Our work expands upon the existing knowledge base of susceptible species and provides evidence that human-wildlife interactions could result in continued transmission of SARS-CoV-2.

Long-term environmental trends and the future of tropical wetlands

2002 ◽  
Vol 29 (4) ◽  
pp. 414-435 ◽  
Author(s):  
Wolfgang J. Junk
Keyword(s):  
South America ◽  
Sustainable Management ◽  
Human Population ◽  
Human Impacts ◽  
Population Pressure ◽  
Tropical Wetlands ◽  
Tropical Countries ◽  
Stable Conditions ◽  
Planning Concepts

Tropical wetlands assume important functions in the landscape and contribute considerably to the welfare of large parts of the human population, but they are seriously threatened because they are considered free resources of land and water. This review summarizes long-term environmental trends for tropical wetlands and predicts their future to the time horizon 2025. Many tropical countries do not have the economic strength, scientific and technological capacity, and/or administrative infrastructure to adequately react to the challenges of increasing population pressure and globalization of the economy with respect to the sustainable use of the resources. Furthermore, political instability and armed conflicts affect large areas in several tropical countries, hindering wetland research and management. Detailed wetland inventories are missing in most countries, as are plans for a sustainable management of wetlands in the context of a long-term integrated watershed management. Despite large regional variability, a continental ranking shows, in decreasing order of wetland integrity, South America, Africa, Australia and Asia, while efforts to mitigate human impacts on wetlands are largest and most advanced in Australia. Analysis of demographic, political, economic and ecological trends indicates fairly stable conditions for wetlands in tropical Australia, slight deterioration of the large wetland areas in tropical South America excepting the Magdalena and Cauca River flood plains where human population is larger, rapidly increasing pressure and destruction on many African and Central American wetlands and serious threats for the remaining wetlands in tropical Asia, by the year of 2025. Policy deficiencies, deficient planning concepts, limited information and awareness and institutional weakness are the main administrative reasons for wetland degradation and must be overcome to improve wetland management and protection in future. Intensification of international cooperation and assistance is considered of fundamental importance for most tropical countries to solve problems related to wetland research, protection and sustainable management.

scholarly journals Dynamics of Land Use and Land Cover in the Kafta-Sheraro National Park, NW Ethiopia: Patterns, Causes and Management Implications

1970 ◽  
Vol 11 (2) ◽  
pp. 239-257
Author(s):  
Arafaine Zenebe ◽  
Asefa Addisu
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Land Cover Change ◽  
National Park ◽  
Human Population ◽  
Agricultural Land ◽  
Human Impacts ◽  
Population Expansion ◽  
Population Pressure ◽  
Land Cover Types

Kafta-Sheraro National Park (KSNP) is one of the most important protected areas in Ethiopia and provides a number of important ecological and hydrological benefits to the local people. However, the park is under immense pressure as a result of a rapidly increasing human population that resulted from a voluntary resettlement program launched by the government in 2003. Using satellite imageries taken in the years 2003, 2009 and 2015, this study examined patterns of changes in land use/cover throughout the park over a 12 year period (2003 to 2015), during which human population pressure is known to have increased over time and changes in government policies were taken place. The results showed that, over the period of 12 years, wood land experienced the most changeover the study period, with a loss of cover of 862.3 km2 (i.e. from 77.8% coverage of the total park area in 2003 to 38.0% in 2015) at annual rate of 79.3 km2). Conversely, the other land cover types showed increasing pattern, particularly, bush land and agricultural land were increasing at a rate of 44.96 and 18.90 km2 per year, respectively. Overall, the rate of land cover change was higher during the first period (2003 to 2009) compared with the second period (2009 to 2015) for all land use and land cover types, except grass land, suggesting that human impacts were higher following the resettlement program in 2003 and then slowed down following establishment of the park in 2007. The major causes of land cover change in the area were settlement and population expansion, cultivation, fire, mining and grazing. We suggest that better effective park protection systems should be in place to mitigate and restore habitats.

Fishing in the gene pool – how useful was the catch?

2013 ◽  
Vol 11 (3) ◽  
pp. 283-287
Author(s):  
Robert Koebner ◽  
Rodomiro Ortiz
Keyword(s):  
Climate Change ◽  
Plant Breeding ◽  
Genetic Resources ◽  
Gene Pool ◽  
Human Population ◽  
Plant Genetic Resources ◽  
Population Pressure ◽  
Central Theme ◽  
Section Meeting ◽  
Breeding Programmes

A commentary on the highlights of the 2013 EUCARPIA (the European Associationc for Research on Plant Breeding) Plant Genetic Resources Section meeting at the Swedish University of Agricultural Sciences in Alnarp is presented here. The central theme of the meeting was the use of plant genetic resources in pre-breeding programmes, particularly in the context of incipient climate change and human population pressure.

Modeling the effects of environmental pollution intensified by urbanization on human population

2016 ◽  
Vol 07 (03) ◽  
pp. 1650013 ◽  
Author(s):  
Abhinav Tandon ◽  
Kumari Jyotsna
Keyword(s):  
Mathematical Model ◽  
Environmental Pollution ◽  
Human Population ◽  
Model Analysis ◽  
Population Pressure ◽  
Long Run ◽  
Constant Rate ◽  
Growing Population

A mathematical model is presented here to investigate the effects of environmental pollution, intensified by urbanization, on the density of human population. Here, urbanization is assumed to grow with constant rate and also, induced through growing population and the corresponding population pressure. The model analysis, qualitatively and numerically, show that though the growth of population or population pressure is responsible for the growing urbanization, but for very large increase of urbanization, the population may not survive in the long run due to environmental pollution driven by urbanization.

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