Abstracts » Environmental issues

Astrobiology: exploring the origins, evolution, and distribution of life in the universe

Article Abstract:

The origins, evolution, and distribution of life in the universe are discussed relative to astrobiology. The search for life's origins of life, perhaps outside Earth, is greatly helped by new technology and by findings that show life tolerates extremes in conditions and that planets are spread far and wide. Astrobiologists study these things. They learn to recognize morphological, chemical and spectroscopic indications that life was in a place to investigate samples from outside Earth and to look at electromagnetic spectra reflected from extrasolar planets for indications of life.

Australia, Life on other planets, Solar system, Extraterrestrial life, Microorganisms, Geology, Stratigraphic, Stratigraphy, Life, Origin, Planets, Space biology, Exobiology, Origin of life, Precambrian Era

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The relationship between productivity and species richness

Article Abstract:

Productivity and species richness and the relationship of the two are discussed. Primary productivity is a commonly estimated property of ecosystems and species richness is one aspect of biodiversity. The literature is reviewed and case studies from aquatic, terrestrial and wetland biomes for which detailed information is available are used.

Biological diversity, Biodiversity

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Ecological resilience - in theory and application

Article Abstract:

The term adaptive capacity is defined and added to the theory of ecological resilience, or the ability of an ecosystem to withstand disturbance. Adaptive capacity describes the mechanisms that alter ecological resilience.

Statistical Data Included, Adaptation (Biology), Evolutionary adaptation

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