Dutta et al. found similar re-aeration patterns in a 1 m column experiment in a sand dominated soil, with re-aeration occurring quickly once drying commenced. Even with the presence of a limiting layer, defined by lower pore gas velocities and higher carbon concentration, a sandy loam channel acted as a conduit of O2 into the deep …
Author Archives: nature2022
Many returnees took advantage of their Brazilian connections to become themselves traders in slaves
These processes took place in tandem with the erection of an overarching global apparatus, in particular the United Nations system and the Bretton-Wood institutions . Early rapprochements between the dozens of newly independent nation-states unfolded largely under the auspices of – and were in a sense enabled by – this multilateral governance system. In particular, …
Water is not priced to signal the most-efficient uses these cases
A modeling approach that relies on analyzing the individual farm operation as the unit of interest, as proposed in the types of models described in Rosen and Sexton, and Zusman and Rausser, has two problems. The first is that it misses the influence of non-farm voters on district decisions, particularly in popular-vote and board-appointed selection …
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The practice however releases carbon to the atmosphere and increases the probability of soil erosion
Similar results were found for tropical silvopastoral systems where the canopy cover and tree density were positively related with migratory bird flocks . In a comparison of different structural complexity, silvopastoral systems supported less diverse bird flocks than shade coffee in Colombia, but it is likely that shade coffee could support more bird species than …
The cost is that it may measure something different from the impact of climate on long-run profit
One possible measure is farmland value, which presumably reflects long run profitability, and which has been used quite extensively since Mendelsohn et al. introduced the so-called Ricardian approach for assessing the impact of climate change on agriculture. With this approach, one estimates a Ricardian or hedonic regression relating farmland value to climate variables and to other …
The main impact on MA changes during this sample period was from output demand
Even based on observed pK changes, CMA,pK=0.044. If weighted by the greater increases p*K, the MA demand augmenting impact of capital price changes would be C*MA,pK =0.056. The implied higher growth of virtual compared to measured price of capital could result from various factors. Its drivers could include substantive and rising adjustment costs , environmental or …
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Pasture still accounts for over 90 percent of animal nutrition in Brazil
In the piece, Boyd describes a heterogeneous network of firms, governments, and advocates developing REDD institutions simultaneously. He uses the metaphor of DNA to describe how frameworks and approaches from any particular effort can be combined and recombined into other efforts without passing through the bureaucracy of the UN. One respondent noted that a good …
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Fitz-Gibbon and Eisler similarly critiqued early meta-analyses of educational and psychology studies
In contrast to the notion that seepage water from wetlands may be considered as a source of groundwater nitrate contamination, this study shows that under the conditions present in our wetland, seepage through wetland soils can actually prevent some nitrate contamination of groundwater. Before recommending constructed wetlands that utilize seepage as a beneficial-management practice for …
An increase in government spending naturally affects domestic aggregate demand
The devaluing pressure on the exchange rate would create an interest differential in favor of the foreign countries and a capital outflow which would increase the depreciating pressure on the exchange rate. Money supply growth would thus decrease proportionally and so would price inflation, at least initially. Real depreciation would then lead to an increase …
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Our findings show that PFAS exposure dysregulates adipogenesis
Barrier disruptions were attributed to the toxic effects of PFOS on f-actin, microtubule, and gap junction organization. Specifically, dose dependent PFOS exposure disassembled tight and gap junctions responsible for barrier function of blood-testis barrier, increased blood-testis barrier permeability, and disrupted spermatogenesis. PFAS chemicals have also demonstrated tight junction opening in brain endothelial cells, a main …
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