Results 211 to 220 of about 9,969 (249)
Host desiccation and interspecific competition limit reproductive performance of a bark beetle
Agricultural and Forest Entomology, EarlyView.At high and moderate phloem moisture levels, Polygraphus proximus reproductive success was suppressed by sympatric species density. At low phloem moisture, P. proximus reproductive success was suppressed by the low phloem moisture regardless of the Cryphalus laricis hole density. Conspecific density (i.e., attack density of P.
Mai Aochi, Etsuro Takagi
wiley +1 more source
Sequence of Immunological Events During IgE‐Mediated Allergic Reactions to Food
Allergy, EarlyView.ABSTRACT Food allergies (FA) represent a significant global health burden. Upon allergen re‐exposure, allergic patients exhibit a sequence of symptoms that vary in terms of affected organ systems, severity, time of onset and allergen reactivity thresholds.
N. A. Nagy +7 more
wiley +1 more source
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2011
crobial mats are laminated microbial communities that generally develop in aqueous environments under conditions that exclude fauna. The biogeochemical cycles in microbial mats are usually largely closed, although small fluxes of elements are exchanged with the geo-, bio-, and atmosphere.
Stal, L.J., Noffke, N.
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crobial mats are laminated microbial communities that generally develop in aqueous environments under conditions that exclude fauna. The biogeochemical cycles in microbial mats are usually largely closed, although small fluxes of elements are exchanged with the geo-, bio-, and atmosphere.
Stal, L.J., Noffke, N.
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2010
Microbial mats have been the focus of scientific research for a few decades. These small-scale ecosystems are examples of versatile benthic communities of microorganisms, usually dominated by phototrophic bacteria (e.g., Krumbein et al., 1977; Jørgensen et al., 1983). They develop as vertically stratified populations of functionally different groups of
Severin, I., Stal, L.J.
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Microbial mats have been the focus of scientific research for a few decades. These small-scale ecosystems are examples of versatile benthic communities of microorganisms, usually dominated by phototrophic bacteria (e.g., Krumbein et al., 1977; Jørgensen et al., 1983). They develop as vertically stratified populations of functionally different groups of
Severin, I., Stal, L.J.
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Microbial mats: A joint venture
Marine Geology, 1993Microbial mats characteristically are dominated by a few functional groups of microbes: cyanobacteria, colorless sulfur bacteria, purple sulfur bacteria, and sulfate-reducing bacteria. Their combined metabolic activities result in steep environmental microgradients, particularly of oxygen and sulfide.The driving force of most microbial mats is ...
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Interfacial Microbial Mats and Biofilms
2001Abstract Biofilms and microbial mats can be defined as surface-associated layers of microbial cells embedded in extracellular polymeric substance (EPS; Characklis and Marshall, 1989; Stal and Caumette, 1994). Biofilms cover solid surfaces, while mats cover sediments.
Beer, Dirk de, Kühl, Michael
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Microbial Spheres from Microbial Mats
2003Filamentous cyanobacteria from the LPP-group (Lyngbya sp., Plectonema sp., Phormidium sp.), diatoms and heterotrophic bacteria are the dominant microorganisms of North Sea microbial mats (Gerdes et al., 1986). Cultivated on solid or liquid media the cyanobacteria produce motile trichomes.
Ulrike Brehm +2 more
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Aerobic Sulfate Reduction in Microbial Mats
Science, 1991Measurements of bacterial sulfate reduction and dissolved oxygen (O 2 ) in hypersaline bacterial mats from Baja California, Mexico, revealed that sulfate reduction occurred consistently within the well-oxygenated photosynthetic zone of the mats.
D E, Canfield, D J, Des Marais
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2017
Microbial mats are structured, small-scale microbial ecosystems, and similar as biofilms cover a substratum like a tissue. A general characteristic of a microbial mat is the steep physicochemical gradients that are the result of the metabolic activities of the mat microorganisms.
Stal, L.J., Bolhuis, H., Cretoiu, M.S.
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Microbial mats are structured, small-scale microbial ecosystems, and similar as biofilms cover a substratum like a tissue. A general characteristic of a microbial mat is the steep physicochemical gradients that are the result of the metabolic activities of the mat microorganisms.
Stal, L.J., Bolhuis, H., Cretoiu, M.S.
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“Farming” of Microbial Mats in the Hindgut of Echinoids
2003The hindgut of several species of spatangoids (burrowing echinoids) harbours a highly contractile and extensile caecum filled up with spherical nodules (De Ridder et al., 1985, De Ridder 1994). A nodule reaches up to 7 mm in diameter and the caecum usually contains numerous nodules of varied size (Figs 1-2).
De Ridder, Chantal, Brigmon, Robin L.
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