| Abstract: | The breeding population of American black ducks (Anas rubripes ) on Chesapeake Bay has declined over the past 30 years. We tested whether there have been changes in laying date, clutch size, and nest success of breeding black ducks on islands in Chesapeake Bay between the 1950‘s and 1980‘s. None of these variables differed significantly between decades, suggesting that other factors must be responsible for the decline in locally breeding black ducks. |
| Genre: | Article |
| ProdID: | 1015097 |
| Citation Author: | Smith, L.K.; Sartoris, J.J.; Thullen, J.S.; Andersen, D.C. |
| Citation Contributing Office: | Fort Collins Science Center |
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| Citation End Page: | 696 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Wetlands |
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| Citation Number Of Pages: | 13 |
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| Citation Phsyical Description: | p. 684-696 |
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| Citation Search Results Text: | Investigation of denitrification rates in an ammonia-dominated constructed wastewater treatment wetland; 2000; Article; Journal; Wetlands; Smith, L.K.; Sartoris, J.J.; Thullen, J.S.; Andersen, D.C. |
| Citation Start Page: | 684 |
| Citation Volume: | 20 |
| Citation Year: | 2000 |
| Type: | citation/reference |
| Text: | Investigation of denitrification rates in an ammonia-dominated constructed wastewater treatment wetland; 2000; Article; Journal; Wetlands; Smith, L.K.; Sartoris, J.J.; Thullen, J.S.; Andersen, D.C. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (INDEX PAGE): | http://www.fort.usgs.gov/Products/Publications/pub_abstract.asp?PubID=4111 |
| Date Other: | Sat, 1 Jan 2000 00:00 -0600 |
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