Date:    Tue, 22 Apr 1997 17:18:33 GMT
From:    Mark Nilles 
Subject: Acid rain & precipitation chemistry data for US

Just a notice that the precipitation chemistry and atmospheric
deposition database for the U.S. is on-line and available from
the National Atmospheric Deposition Program (NADP) at
http://nadp.nrel.colostate.edu/NADP/

This is summarized, finalized and quality assured data including:

  Color isopleth maps of precipitation chemistry and deposition for the
U.S.

  Data from nearly 200 active monitoring sites throughout the US
including:
    Weekly data
    Monthly precipitation-weighted mean concentrations
    Annual and seasonal precipitation-weighted mean concentrations
    Annual and seasonal deposition totals (kg/ha)
    Daily precipitation data
    Annual Summary Report

The USGS also has an on-line resource for acid rain and precipitation
chemistry at http://btdqs.usgs.gov/acidrain

In addition to links to the NADP site, the USGS site provides;

  An on-report evaluating the impact of the recent reductions
  in sulfur dioxide emissions on acid rain in the Eastern US.

  A primer on acid rain geared towards students and general public.

  A U.S. map showing the most recent NADP data on pH of precipitation.

  Info on the quality assurance work the USGS provides to the NADP.

The USGS is the lead agency for the monitoring of atmospheric deposition
in the
United States. The National Atmospheric Deposition Program/National
Trends
Network (NADP/NTN) brings together the USGS and over 100 partners from
other
federal, state, local and private organizations to provide continuous
measurement and assessment of precipitation chemistry and acid rain
throughout the United States. The USGS supports 77 of the 191 NADP/NTN
sites
and provides nearly one-half of the funding for the network.

The NADP is the only nation-wide monitoring program designed to
determine
if on-going and future regulatory actions to reduce air pollution are
resulting in an improvement in the quality of the Nation's precipitation
chemistry. Improvements in precipitation chemistry lessens environmental
impacts to our Nation's land and water resources.

Mark Nilles, Coordinator for atmospheric deposition
U.S. Geological Survey
manilles@usgs.gov

------------------------------

Date:    Tue, 22 Apr 1997 21:03:16 +0100
From:    Richard Seaby 
Subject: Species Richness and Diversity

If you are interested in species richness and diversity please come and
look at our new program at

http://www.irchouse.demon.co.uk/diversity.html

Thanks
Dr Richard Seaby
PISCES Conservation Ltd
IRC House
The Square
Pennington          Tel     - 44 (0)1590 676622
Lymington           Fax     - 44 (0)1590 675599
Hants               Email   - pisces@irchouse.demon.co.uk
SO41 8GN            Website - Http://www.irchouse.demon.co.uk