منابع مشابه
Biodiversity Loss Threatens Human Well-Being
T he diversity of life on Earth is dramatically affected by human alterations of ecosystems [1]. Compelling evidence now shows that the reverse is also true: biodiversity in the broad sense affects the properties of ecosystems and, therefore, the benefi ts that humans obtain from them. In this article, we provide a synthesis of the most crucial messages emerging from the latest scientifi c lite...
متن کاملMutualism Disruption Threatens Global Plant Biodiversity: A Systematic Review
BACKGROUND As global environmental change accelerates, biodiversity losses can disrupt interspecific interactions. Extinctions of mutualist partners can create "widow" species, which may face reduced ecological fitness. Hypothetically, such mutualism disruptions could have cascading effects on biodiversity by causing additional species coextinctions. However, the scope of this problem - the mag...
متن کاملCoral decline threatens fish biodiversity in marine reserves.
The worldwide decline in coral cover has serious implications for the health of coral reefs. But what is the future of reef fish assemblages? Marine reserves can protect fish from exploitation, but do they protect fish biodiversity in degrading environments? The answer appears to be no, as indicated by our 8-year study in Papua New Guinea. A devastating decline in coral cover caused a parallel ...
متن کاملIts Own Operators
The typical pattern-recognition program is either elaborately preprogrammed to process specific arrays of input patterns, or else it has been designed as a tabula rasa, with certain abilities to adjust its values, or "learn." The first type often cannot identify large classes of patterns that appear only trivially different to the human eye, but that would completely escape the machine's logic ...
متن کاملReflective Practice: How the World Bank Explored Its Own Biases?
While many international organisations have independent evaluations, including the International Monetary Fund (IMF) and World Health organization (WHO), uniquely the World Bank in its 2015 World Development Report sought to ascertain the potential biases that influence how its staff interpret evidence and influence policy. Here, we describe the World Bank’s study design, including experiments ...
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ژورنال
عنوان ژورنال: Nature
سال: 2013
ISSN: 0028-0836,1476-4687
DOI: 10.1038/493608d