| Main Title |
Estimating Species Richness Using the Jackknife Procedure. |
| Author |
Heltshe, J. F. ;
Forrester, N. E. ;
|
| CORP Author |
Rhode Island Univ., Kingston.;Environmental Research Lab., Narragansett, RI. |
| Year Published |
1984 |
| Report Number |
EPA-R-807031; EPA-600/D-84-031 ; ERLN-X77 |
| Stock Number |
PB84-148832 |
| Additional Subjects |
Species ;
Ecology ;
Communities ;
Sampling ;
Estimates ;
Jackknife method ;
Biostatistics
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB84-148832 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
22p |
| Abstract |
An exact expression is given for the jackknife estimate of the number of species in a community and its variance when one uses quadrat sampling procedures. The jackknife estimate is a function of the number of species that occur in one and only one quadrat. The variance of the number of species, and approximate two sided confidence intervals can be constructed. The behavior of the jackknife estimate as effected by quadrat size, sample size, and sampling area is looked at by simulation. |
| NTIS Title Notes |
Technical rept.. |
| PUB Date Free Form |
1984 |
| Category Codes |
6F; 57H |
| NTIS Prices |
PC A02/MF A01 |
| Primary Description |
600/05 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
410422546 |
| Origin |
NTIS |
| Type |
CAT |
