文章基本信息

标题：Vegetation in passively revegetated constructed wetlands associated with agriculture in Northwest Ohio. (Soil--Water--Wetlands 09:00 AM, Saturday, April 5, 2003 Brewer/Frost Science 138 Mr. James J. Hoorman-Presiding).
作者：Luckeydoo, Lee M.
期刊名称：The Ohio Journal of Science
印刷版ISSN：0030-0950
出版年度：2003
期号：March
语种：English
出版社：Ohio Academy of Science
摘要：Constructed wetlands are increasingly being introduced into the agricultural landscape, primarily for their ability to reduce delivery of non-point source pollutants to streams. Water treatment within a wetland is largely a function of the types/amounts of vegetation present in the wetland. Passively revegetated, constructed wetlands are being monitored for water quality improvement capability at three Wetland Reservoir Subirrigation Project (WRSIS) sites on previously converted cropland adjacent to agricultural fields in northwest Ohio. Quadrat based observational surveys of vascular vegetation were made during 1998-2001 in three zones at each site: the open water zone, a one meter deep zone centered at the waterline (frequently submerged), and the one meter zone above the waterline zone (infrequently submerged). There was a total flora (77 unique species) from all three locations combined. Few species had established in the open water zone. There were similar numbers of annuals (47%) and perennials (49%) of total flora. Wetland indicator species represented 46 %. 85% of the wetland species were native. Dominant species, species with high importance factor (IF) rankings, within the constructed wetlands were most likely from local sources. One of the high IF species, Polygonum persicaria, was a "weed" in local agricultural fields. Four IF species were observed in nearby drainage ditches and streams. Remaining high IF species were supplied from erosion control efforts, for example Medicago sativa and Echinochloa crus-galli, which were seeded onto the top of the banks following construction. Surveys and IF lists suggest planting may expedite vegetation establishment in WRSIS constructed wetlands.
关键词：Environmental research;Wetland ecology;Wetlands

Vegetation in passively revegetated constructed wetlands associated with agriculture in Northwest Ohio. (Soil--Water--Wetlands 09:00 AM, Saturday, April 5, 2003 Brewer/Frost Science 138 Mr. James J. Hoorman-Presiding).

Luckeydoo, Lee M.

10:45

Constructed wetlands are increasingly being introduced into the agricultural landscape, primarily for their ability to reduce delivery of non-point source pollutants to streams. Water treatment within a wetland is largely a function of the types/amounts of vegetation present in the wetland. Passively revegetated, constructed wetlands are being monitored for water quality improvement capability at three Wetland Reservoir Subirrigation Project (WRSIS) sites on previously converted cropland adjacent to agricultural fields in northwest Ohio. Quadrat based observational surveys of vascular vegetation were made during 1998-2001 in three zones at each site: the open water zone, a one meter deep zone centered at the waterline (frequently submerged), and the one meter zone above the waterline zone (infrequently submerged). There was a total flora (77 unique species) from all three locations combined. Few species had established in the open water zone. There were similar numbers of annuals (47%) and perennials (49%) of total flora. Wetland indicator species represented 46 %. 85% of the wetland species were native. Dominant species, species with high importance factor (IF) rankings, within the constructed wetlands were most likely from local sources. One of the high IF species, Polygonum persicaria, was a "weed" in local agricultural fields. Four IF species were observed in nearby drainage ditches and streams. Remaining high IF species were supplied from erosion control efforts, for example Medicago sativa and Echinochloa crus-galli, which were seeded onto the top of the banks following construction. Surveys and IF lists suggest planting may expedite vegetation establishment in WRSIS constructed wetlands.

LEE H. LUCKEYDOO LUCKEYDOO.1@OSU.EDU, USDA-ARS 590 WOODY HAYES DR, COLUMBUS OH 43210