My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2013-04-18_REPORT - C1982057
DRMS
>
Day Forward
>
Report
>
Coal
>
C1982057
>
2013-04-18_REPORT - C1982057
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 5:19:38 PM
Creation date
4/18/2013 1:12:57 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982057
IBM Index Class Name
REPORT
Doc Date
4/18/2013
Doc Name
2012 Revegetation Monitoring Report
From
Seneca Coal Company
To
DRMS
Permit Index Doc Type
Reveg Monitoring Report
Email Name
JLE
SB1
Media Type
D
Archive
No
Jump to thumbnail
< previous set
next set >
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
442
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
For purpose of establishing the range of species density within the reference areas, the 75% range of <br />variation is established as: <br />zxs <br />Where: <br />z = the number of standard deviations (both ways from the mean) <br />encompassing 75% of the normal distribution (= 1.15; see Rohlf and <br />Sokal 1969, Table P) <br />s = standard deviation (n -1) <br />The standard is the lower bound of the central 75% of the distribution of overall species density in the <br />reference areas. Mathematically this is: <br />Mean reference area species density (no. of species per 100 sq.m.) - 1.15 s <br />(Here the mean is the un- weighted mean of the five reference areas and the standard deviation is <br />derived from those five means) <br />The standard is based on a weighted average as done with cover and production. <br />Note that this test addresses total species density, not just native species density (see Test D) below). <br />Noxious weeds are omitted. The point of addressing total species density, including annual /biennial <br />species and introduced species, is that the total species density is arguably a strong indication of the <br />existence of niche spaces that could eventually be occupied by the native forb and woody plant species <br />typical of the pre- mining plant communities. <br />The final step for the Test B assessment is a straight comparison of the mean total species density of the <br />reclaimed area to the reference area - derived standard number (above). If the reclaimed area mean <br />exceeds the standard, the Test B is passed. <br />Alternative Test C): Species Density Distribution Assessment Among Lifeforms <br />This test relates to the distribution of species presence among the various lifeforms in comparison to the <br />reference areas. This standard uses the Motyka similarity index to assess the resemblance of species <br />density distribution by lifeform of the reclamation vegetation to that of the reference areas. Because the <br />9 <br />
The URL can be used to link to this page
Your browser does not support the video tag.