Members of the phylum Acidobacteria are among the most abundant soil bacteria on Earth, but little is known about their response to environmental changes. We asked how the relative abundance and biogeographic patterning of this phylum and its subgroups responded to forest-to-pasture conversion in soils of the western Brazilian Amazon. Pyrosequencing of 16S rRNA genes was employed to assess the ...

Winter is a very important period during the dairying calendar. Regions such as Southland, with susceptible soils and extended periods with soils at saturation levels will face increasing pressure to review wintering practices. On-farm options for wintering cows to protect soils and prevent pasture damage are needed. This requires a turn-around in philosophy from taking cows to pasture/crops, t...

logistic regression (lr) was used to model urban growth between the years 1987 and 2001 in gorgan city, north east of iran. three groups of variables including economic-social, land use and biophysical variables were used in the modeling practice. using covariance of the independent variables, distance to administrative and sporting centers plus distance to cities were removed. roc (relative op...

A study was made to investigate faecal thiaminase and the thiamine-related biochemical changes in apparently normal replacement ewes with a feed change, after the initiation without adaptation to the new pasture. Twenty-four female ewes were divided into two groups. Group A was managed in a system based on pasture and was compared with group B system based on a diet of concentrate and straw unt...

1 2 A soil transfer field experiment has been designed in order to study (i) whether and how 3 Collembolan communities are affected by a sudden perturbation (a shift from agricultural land 4 to heathland, and the reverse), and (ii) whether species do respond in the same direction and 5 to the same extent according to their habitat preference (ascertained by controls). The study 6 was conducted ...

Introduction Cattle production on Brachiaria pastures is a primary use of cleared forestland in the western Brazilian Amazon. About 6.8 million hectares in the States of Acre and Rondônia have been deforested, where 75% of land is now grazed (IBGE, 1998). The principal pasture species are B. brizantha and B. decumbens with the latter in decline from spittlebug susceptibility (Deois incompleta; ...

Stocking rate is the kq, determining effect of management intensive grazing on dairy farm projtability. However, increased stocking rate can increase NOi leaching fiom pastures. Increasing ztocking rate increases NO3loss through leaching because the bulk o f the N conszdmed by the anilnal is excreted in concentrated areas of the pasture mainly in urine. We used experimental uha porn the northea...

In Maranhão State, Brazil, soils are naturally acidic, nutrient-deficient, and prone to cohesion erosion. Removing the natural cover establish pastures causes physical, chemical, biological changes in soil. Therefore, this study aimed evaluate contents stocks of carbon (C), nitrogen (N), particle-size fractions soil organic matter (SOM) with different years recovery, compare them a secondary fo...

To investigate the extent to which enteric methane (CH4) emissions from growing lambs are explained by simple body weight and diet characteristics, a 2 × 2 Latin square changeover design experiment was carried out using two sheep breeds and two fresh pasture types. Weaned lambs of two contrasting breed types were used: Welsh Mountain (WM, a small, hardy hill breed) and Welsh Mule × Texel (TexX,...