The influence of protozoa in ruminant digestion

1992 ◽  
Vol 1992 ◽  
pp. 19-19
Author(s):  
J.P. Jouany ◽  
J. Bohatier ◽  
J. Senaud ◽  
S. Toillon ◽  
M. Fabre
Keyword(s):  
Microbial Biomass ◽  
Active Part ◽  
Animal Performance ◽  
Total Microbial Biomass ◽  
Research Project ◽  
Ciliate Protozoa

Although ciliate protozoa make up 50 % of the total microbial biomass of the rumen and play an active part in the degradation of feed, some authors have shown that animal performance is sometimes improved if they are eliminated. We have been working on a research project to determine the effect of the presence of certain genera of protozoa on digestion in ruminants.

Effect of forest harvesting and slash piling on microbial biomass and respiration in Newfoundland boreal forests

2007 ◽  
Vol 87 (4) ◽  
pp. 455-458 ◽  
Author(s):  
Martin T Moroni ◽  
Paul Q Carter ◽  
Dean W Strickland ◽  
Franz Makeschin ◽  
Don-Roger Parkinson ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Key Words ◽  
Boreal Forests ◽  
Fungal Biomass ◽  
Forest Harvesting ◽  
Organic Layer ◽  
Total Microbial Biomass ◽  
Organic Layers ◽  
Respiration Rates ◽  
Fumigation Extraction

Clearcutting Newfoundland boreal forests significantly reduced organic layer fungal and total microbial biomass in clearcut areas with and without slash cover, compared with forested plots. However, aerobically incubated respiration rates were highest in organic layers from clearcut areas under slash, intermediate under forests, and lowest from clearcut areas without slash. Key words: Carbon, ergosterol, fumigation–extraction, fungal biomass, harvest slash, nitrogen

Patients' Own Contributions to Long-Term Supportive Psychotherapy in Schizophrenic Disorders

1994 ◽  
Vol 164 (S23) ◽  
pp. 84-88 ◽  
Author(s):  
Sidsel Gilbert ◽  
Endre Ugelstad
Keyword(s):  
Catchment Area ◽  
Active Part ◽  
Research Project ◽  
Supportive Psychotherapy ◽  
One Year ◽  
The Relationship

The paper describes a study based on the Nordic multi-centre research project NIPS. In the Norwegian part, based on one-year screening and sampling of all new schizophrenic cases in a catchment area in Oslo, patients and therapists were interviewed after 2–3 years. Some patients seemed to have played a much more active part in establishing and breaking therapeutic contacts and in setting the terms for the relationship than is usually acknowledged. In the interviews at five-year follow-up, many patients produced viewpoints on their psychotherapeutic experiences that seem to be very important in relation to therapy.

Effects of carbon amendment onin situatrazine degradation and total microbial biomass

2013 ◽  
Vol 48 (1) ◽  
pp. 40-48 ◽  
Author(s):  
Anastasiah N. Ngigi ◽  
Zachary M. Getenga ◽  
Ulrike Dörfler ◽  
Hamadi I. Boga ◽  
Benson Kuria ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Total Microbial Biomass ◽  
Carbon Amendment

scholarly journals Methods for elucidating microbial biomass

2016 ◽  
Vol 3 (3) ◽  
Author(s):  
Nidhi Saxena
Keyword(s):  
Organic Matter ◽  
Microbial Biomass ◽  
Standing Crop ◽  
Bacterial Biomass ◽  
Dry Weight ◽  
Trophic Levels ◽  
Total Microbial Biomass ◽  
Ecological Parameter ◽  
Living Material ◽  
Living Organisms

<p>The microbial biomass of soil is defined as the part of the organic matter in the soil that constitutes living organisms smaller than the 5-10 mm<sup>3. </sup>It is generally expressed in the milligrams of carbon per kilogram of soil or micrograms of carbons per gram of dry weight of soil. Typical biomass carbon ranges from 1 to 5% of soil organic matter. Biomass literally means “mass of living material” and can be expressed in units of weight (grams) or units of energy (calories or joules). Biomass is an important ecological parameter as it represents the quantity of energy being stored in a particular segment of biological community.             </p>               Measurement of biomass is used to determine standing crop of a population and transfer of energy between trophic levels within an ecosystem. A measure of the total microbial biomass in soil is often required when studying productivity or fertility of soils. Sometimes the biomass of specific parts of the microbiota is required-for example fungal biomass versus bacterial biomass.

Enzymatic and microbial activities as influenced by tillage and fertilization in a semi-arid Mediterranean agroecosystem

2021 ◽  
Author(s):  
Francesco De Mastro ◽  
Andreina Traversa ◽  
Gennaro Brunetti ◽  
Evgenia Blagodatskaya
Keyword(s):  
Microbial Biomass ◽  
Turnover Rate ◽  
Microbial Growth ◽  
Soil Depth ◽  
Conventional Tillage ◽  
Microbial Activities ◽  
Total Microbial Biomass ◽  
Tillage Practice ◽  
Potential Activity ◽  
Soil Organics

&lt;p&gt;Soil enzymes respond rapidly to changes in soil managements, and therefore are used as early and sensitive indicators of alteration in soil properties induced by tillage and additions of fertilizers. The aim of this work was to compare the effects of different tillage (no, minimum, and conventional tillage), fertilization and soil depth (0-30, 30-60 and 60- 90 cm) on the microbial biomass, enzyme activity and their relationship with soil nutrients in a semiarid Mediterranean agro-ecosystem. Growing and total microbial biomass decreased with depth together with the activities of &amp;#946;-glucosidase and N-acetyl-&amp;#946;-glucosaminidase presumably because of the reduced carbon and oxygen content in the deeper layers of soils. The fertilization stimulated fast-growing microorganisms with low affinity of enzyme systems to substrate, enhanced the growing microbial biomass and facilitated the turnover rate of soil organics. Under no tillage, all enzymes showed higher potential activity in top layers of fertilized plots as compared with non-fertilized ones. The minimum tillage practice increased the growing microbial biomass, and stimulated N- and P-acquiring enzymes due to &amp;#160;increased nutrients limitation. Parameters of microbial growth and enzyme kinetics are suitable indicators of microbial activity in semiarid Mediterranean agroecosystems.&lt;/p&gt;

Sign in / Sign up

Export Citation Format

Share Document