| Main Title |
The role of sludge worms in eutrophication / |
| Author |
Brinkhurst, Ralph O.,
|
| Other Authors |
|
| Publisher |
United States Environmental Protection Agency, Office of Research and Monitoring, |
| Year Published |
1972 |
| Report Number |
EPA-R3-72-004 |
| OCLC Number |
00848546 |
| Subjects |
Eutrophication--Ontario, Lake (NY and Ont) ;
Sludge worms--Ontario, Lake (NY and Ont) ;
Water--Pollution--Ontario, Lake (NY and Ont) ;
Eutrophication--Control--Research ;
Eutrophication--Research ;
Sludge worms--Research ;
Benthic ecology--Research ;
Water--Microbiology--Research ;
Lake Ontario
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| EJBD |
EPA R3-72-004 |
|
Headquarters Library/Washington,DC |
01/13/2015 |
| EJDD |
EPA-R3-72-004 |
|
Env Science Center Library/Ft Meade,MD |
08/15/1997 |
| ELBD ARCHIVE |
EPA R3-72-004 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
|
| Collation |
viii, 68 pages : illustrations ; 27 cm |
| Notes |
"EPA-R3-72-004 ; August 1972" -- top left of cover and top right of title page "Project 16010 ECQ." -- title page Includes bibliographical references (pages 61-63). Project |
| Contents Notes |
"In grossly polluted Toronto Harbour, Lake Ontario the worm population averaging 96,000 animals/m2 (18.3 g ash-free dry wt/m2) assimilated 1,743 kcals/m2/yr and produces 1550 kcals/m2/yr worm tissue. Of the total nitrogen input of 830 tons/year, 7 tons is present in worm tissue at any one time and 113 tons may be circulated in a year. Production and Respiration values for tubificids should be based on mixed species cultures because of positive interations between species which increase the assimilation rate and assimilation efficiency. Worms feed selectively upon the bacteria in sediment. They also pump water through sediment. Large worm populations play a significant role in preventing organic matter from being deposited in an energy or material sink. The quality or specific identity of organic matter inputs are of as much interest as their total calorific or carbon content in determining their effect on benthic production." -- page iii |
