Human impact on transportation and diversity in ecosystems. How far is extrapolation valid
1974
Margalef, Ramón
Firts International Congress of Ecology, Structure, functioning and management of ecosystems, 8-14 September 1974, The Hague : Primer Congreso Internacional de Ecología, 8-14 de septiembre 1974, La Haya.-- 5 pages
显示更多 [+] 显示较少 [-]Interaction between man and the rest of the biosphere may be discussed conveniently in a number of separate items: 1. Exploitation.- To take something out of an ecosystem means a relative reduction of the ecosystems biomass, and, if productivity is not negatively affected, an automatic increase of turnover. Turnover is much increased by conscious management for a high yield. It can be said that selection is no more in the" interest of the ecosystem", but in the" interest of the exploiter", that is, man. Selection for prolificity is encouraged, and r-selection spreads across many layers of the ecosystem. […]
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