Many of the scientists and studies cited below first appeared in the December U.
Find articles by Stuart R. Holt Find articles by William V. Abstract The robustness of the growth of the human population in the face of environmental impacts is in contrast to the sensitivity of wildlife.
There is a danger that the success of reproduction of humans provides a false sense of security for the public, media and politicians with respect to wildlife survival, the maintenance of viable ecosystems and the capacity for recovery of damaged ecosystems and endangered species.
In reality, the success of humans to populate the planet has been dependent on the combination of the ability to reproduce successfully and to minimize loss of offspring through controlling and manipulating their own micro-environment.
In contrast, reproduction in wildlife is threatened by environmental changes operating at many different physiological levels. Successful reproduction is fundamental to the survival and evolution of all species and the primary interest in that symposium was to understand the basic mechanisms underlying how the natural environment and its ambient fluctuations coordinated and modulated reproductive processes.
While there were already increasing concerns about the inexorable increase in the human population and the impact of this on ecosystems and the future of wildlife populations, rapid climate change was not yet a recognized issue.
In his address, Mellanby looked forward with some optimism that mankind would manage and cope with the future, but only on the assumptions that technological advances in energy supply, raw material usage, agriculture and pollution control would allow mankind the tools to undertake this task and that population growth would be brought under control.
How far have we come since ? At the same time, the life expectancy of individuals in developed countries continues to increase. The size of the human population and the technological ability of humans to exploit and manipulate environmental resources are putting enormous pressures on the basic requirements of water, food, energy and space on which all life forms ultimately depend Thomas et al.
The effect of these pressures can often be most easily quantified for humans: Agricultural yields have fallen in some areas of Africa by up to 50 per cent because of factors such as invasive pests, land degradation, erosion, drought and climate changes United Nations Environmental Programme It is salutary to note that, even living a relatively modest lifestyle, the sustainable human population of the planet may be only about million Optimum Population Trust —i.
In contrast to this growth of the human population, the rate of extinction of other species is accelerating. This discrepancy is reflected in the observation that the current hourly growth rate of the human population in excess of dwarfs the total global populations of many threatened species.
Some of the implications of such small population sizes for wildlife species in terms of coping with environmental changes are discussed in Brown et al.
Number of threatened species incorporating critically endangered, endangered and vulnerable to extinction by major groups.Nov 27, · Analyses of the fossil records indicate that while species can adapt to slow environmental changes, rapid changes are far more threatening, with previous periods of global warming being associated with increased rates of extinction and reduced biodiversity (Mayhew et al.
). While these previous rapid climate changes have been of abiotic origin (e.g. volcanism), the environment of the . Wind Power Found to Affect Local Climate. Wind farms can alter the nearby rainfall and temperature, suggesting a need for more comprehensive studies of future energy systems.
Abstract: Soil health, along with water supply, is the most valuable resource for humans, as human life depends on the soil’s generosity. Soil degradation, therefore, poses a threat to food security, as it reduces yield, forces farmers to use more inputs, and may eventually lead to soil abandonment.
Factors Affecting Global Warming: There have been several factors that affect the global warming.
Under normal circumstances the process that is occurs as explained by Environment Canada is that, under normal circumstances, the Earth intercepts radiations from the sun. Given the same amount of absorbed solar energy coming in, the amount of IR escaping to space at the top of the atmosphere will indeed be the same no matter how many greenhouse gases there are (assuming the system is in equilibrium).
Effects Of Global Warming Environmental Sciences Essay. There have been many effects of global warming. As we know, global warming is caused by human activities such as open burning, deforestation and developing of industrial area.