Human Activity and Environmental Processes

1988 ◽  
Vol 154 (1) ◽  
pp. 113
Author(s):  
A. S. Goudie ◽  
K. J. Gregory ◽  
D. E. Walling
Author(s):  
Alina Syp ◽  
Artur Żukiewicz

Agriculture is one of the major anthropogenic contributors to climate changes and, at the same time, the one that can be seriously affected by the results of these changes, extreme weather conditions in particular. This paper presents the perception of climate change and its potential influence on the agricultural holdings of farmers, based on the survey conducted in łęczyński county (125 respondents). According to the survey, 39% of farmers believe that both human activity and natural environmental processes are equally responsible for climate changes. 37% of respondents claimed that climate changes are caused by human activity, while 24% of the surveyed farmers attributed those changes to natural environmental processes only. The vast majority of respondents is concerned that a possible consequence to the occurring changes may be increased costs of agricultural production (69%) and lowered standards of living (61%). The conducted survey proved high awareness of the need to protect the environment and soil among the farmers. 73% of them considers environmental regulations to have a positive impact on the agriculture and its future, but also to increase the work input of farmers and reduce their incomes.


2007 ◽  
Author(s):  
Luci Fuscaldi Teixeira-Salmela ◽  
Sandra J. Olney ◽  
Revathy Devaraj

2019 ◽  
Author(s):  
Grant Duffy ◽  
Jasmine R Lee

Warming across ice-covered regions will result in changes to both the physical and climatic environment, revealing new ice-free habitat and new climatically suitable habitats for non-native species establishment. Recent studies have independently quantified each of these aspects in Antarctica, where ice-free areas form crucial habitat for the majority of terrestrial biodiversity. Here we synthesise projections of Antarctic ice-free area expansion, recent spatial predictions of non-native species risk, and the frequency of human activities to quantify how these facets of anthropogenic change may interact now and in the future. Under a high-emissions future climate scenario, over a quarter of ice-free area and over 80 % of the ~14 thousand km2 of newly uncovered ice-free area could be vulnerable to invasion by one or more of the modelled non-native species by the end of the century. Ice-free areas identified as vulnerable to non-native species establishment were significantly closer to human activity than unsuitable areas were. Furthermore, almost half of the new vulnerable ice-free area is within 20 km of a site of current human activity. The Antarctic Peninsula, where human activity is heavily concentrated, will be at particular risk. The implications of this for conservation values of Antarctica and the management efforts required to mitigate against it are in need of urgent consideration.


Author(s):  
Pierre Aubenque

Pierre Aubenque’s “Science Regained” (1962; translated by Clayton Shoppa) was originally published as the concluding chapter of Le Problème de l’Être chez Aristote, one of the most important and original books on Aristotle’s Metaphysics. In this essay, Aubenque contends that the impasses which beset the project of first philosophy paradoxically become its greatest accomplishments. Although science stabilizes motion and thereby introduces necessity into human cognition, human thought always occurs amidst an inescapable movement of change and contingency. Aristotle’s ontology, as a discourse that strives to achieve being in its unity, succeeds by means of the failure of the structure of its own approach: the search of philosophy – dialectic – becomes the philosophy of the search. Aubenque traces this same structure of scission, mediation, and recovery across Aristotelian discussions of theology, motion, time, imitation, and human activity.


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