Open AccessExploring the deep biosphere probing microbial systems at Earth' extremes
Author(s) -
Sobecky Patricia
Publication year - 2007
Publication title -
eos, transactions american geophysical union
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.316
H-Index - 86
eISSN - 2324-9250
pISSN - 0096-3941
DOI - 10.1029/2007eo340005
Subject(s) - biosphere , earth science , biome , astrobiology , geology , lead (geology) , earth (classical element) , seafloor spreading , ecosystem , early earth , habitat , biological dispersal , planet , deep sea , ecology , environmental science , paleontology , oceanography , biology , population , physics , demography , sociology , astrophysics , mathematical physics
Deep drilling of marine sediments and oceanic crust offers a unique opportunity to explore how life persists and evolves in the Earth's deepest subsurface ecosystems. Resource availability deep beneath the seafloor may impose constraints on microbial growth and dispersal patterns that differ greatly from the surface world. Processes that mediate microbial evolution and diversity may also be very different in these habitats. Communities in parts of the deep subsurface may resemble primordial microbial ecosystems, and may serve as analogues of life on other planets that have, or once had, water. In short, the deep biosphere is one of the least explored biomes on Earth and deserves intense exploration.