Reefal Microbial Crusts

2012 ◽  
Keyword(s):  
Microbial Crusts

scholarly journals Reefal microbial crusts found in Middle Holocene reef from Okinawa Island, the Ryukyu Archipelago

2020 ◽  
Vol 22 (1) ◽  
pp. 9-25
Author(s):  
Kazuhiko FUJITA ◽  
Toru SASAKI ◽  
Sho KOYANO ◽  
Masaaki CHINEN ◽  
Chuki HONGO ◽  
...  
Keyword(s):  
Ryukyu Archipelago ◽  
Okinawa Island ◽  
Middle Holocene ◽  
Holocene Reef ◽  
Microbial Crusts

Precipitation pulse size effects on Sonoran Desert soil microbial crusts

Oecologia ◽  
2003 ◽  
Vol 141 (2) ◽  
pp. 317-324 ◽  
Author(s):  
Jessica M. Cable ◽  
Travis E. Huxman
Keyword(s):  
Size Effects ◽  
Sonoran Desert ◽  
Desert Soil ◽  
Soil Microbial ◽  
Precipitation Pulse ◽  
Microbial Crusts

Bryozoan-rich stromatolites (“bryoliths”) from the Silurian of Gotland and their relation to climate-related perturbations of the carbon cycle

2020 ◽  
Author(s):  
Anna Lene Claussen ◽  
Axel Munnecke ◽  
Andrej Ernst
Keyword(s):  
Stable Isotope ◽  
Carbon Cycle ◽  
High Abundance ◽  
Common Features ◽  
Fossil Remains ◽  
Reef Type ◽  
Environmental Requirements ◽  
Favorable Conditions ◽  
Microbial Crusts

<p>A small but rather unique reef type occurs in the Silurian of Gotland mainly composed of encrusting bryozoans and microbial crusts, forming a complex intergrowth, which can be characterized as bryozoan-rich stromatolites, so-called “bryoliths”. The alternation of bryozoans and microbes is assumingly driven by a repeated change of hostile and more favorable conditions for metazoan growth. The surfaces of the reef bodies are composed of characteristic cauliflower structures, created by bryozoans, which are performing a finger-like growth in every direction. Other common features are bioerosion (mostly by bivalves), enigmatic encrusting echinoderms, a high abundance of organophosphatic fossil remains such as bryozoan pearls and discinid brachiopods, a high abundance of epi- and endobionts, vadose silt, and gypsum pseudomorphs.</p><p>Altogether, ten of these special reefs have been identified on Gotland so far. All of them were formed during periods of strong positive δ <sup>13</sup>C excursions at the Ireviken and Lau isotope excursions in the early Wenlock and late Ludlow, respectively. The unusual features of the bryoliths as well as their occurrence exclusively during strong positive δ <sup>13</sup>C excursions indicate very specific environmental requirements. This leads to the assumption, that whatever caused the isotope excursions also has affected these reef systems. Hence, investigating the bryoliths will hopefully increase our knowledge to what has happened during the – still enigmatic – Silurian stable isotope excursions.</p>

scholarly journals Nitrogen fixation by microbial crusts from desiccated Sahelian soils (Niger)

2001 ◽  
Vol 33 (10) ◽  
pp. 1425-1428 ◽  
Author(s):  
O. Malam Issa ◽  
L.J. Stal ◽  
C. Défarge ◽  
A. Couté ◽  
J. Trichet
Keyword(s):  
Nitrogen Fixation ◽  
Microbial Crusts

scholarly journals The role of cyanobacterial exopolysaccharides in structuring desert microbial crusts

1996 ◽  
Vol 21 (2) ◽  
pp. 121-130 ◽  
Author(s):  
Gideon Mazor ◽  
Giora J. Kidron ◽  
Ahuva Vonshak ◽  
Aharon Abeliovich
Keyword(s):  
Microbial Crusts

Microbial crusts of the late jurassic: Composition, palaeoecological significance and importance in reef construction

Facies ◽  
1993 ◽  
Vol 29 (1) ◽  
pp. 195-229 ◽  
Author(s):  
Reinhold R. Leinfelder ◽  
Martin Nose ◽  
Dieter U. Schmid ◽  
Winfried Werner
Keyword(s):  
Late Jurassic ◽  
Microbial Crusts
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