Drought-Stricken U.S. States Have More Comprehensive Water-Related Hazard Planning

Finite groups have even more centralizers

For a finite group $G$‎, ‎let $Cent(G)$ denote the set of centralizers of single elements of $G$‎. ‎In this note we prove that if $|G|leq frac{3}{2}|Cent(G)|$ and $G$ is 2-nilpotent‎, ‎then $Gcong S_3‎, ‎D_{10}$ or $S_3times S_3$‎. ‎This result gives a partial and positive answer to a conjecture raised by A‎. ‎R‎. ‎Ashrafi [On finite groups with a given number of centralizers‎, ‎Algebra‎ ‎Collo...

Drought Planning in the United States: Status and Future Directions

Conservation Planning for US National Forests: Conducting Comprehensive Biodiversity Assessments

T US National Forest Management Act (NFMA) is an essential statute for maintaining biotic diversity on 192 million acres of national forests and national grasslands. It was enacted in 1976 as reform legislation in response to environmental impacts from timber harvest, grazing, and mining on national forest lands, which the public and Congress found increasingly unacceptable (Wilkinson and Ander...

Developing a Drought Planning Evaluation System in the United States

More closely related plants have more distinct mycorrhizal communities

Neighbouring plants are known to vary from having similar to dissimilar arbuscular mycorrhizal fungal (AMF) communities. One possibility is that closely related plants have more similar AMF communities than more distantly related plants, an indication of phylogenetic host specificity. Here, we investigated the structure of AMF communities among dominant grassland plants at three sites in the No...