Ranking connectivity risk for phosphorus loss along agricultural drainage ditches
نویسندگان
چکیده
منابع مشابه
Determining potential for microbial atrazine degradation in agricultural drainage ditches.
Passage of agricultural runoff through vegetated drainage ditches has been shown to reduce the amount of pesticides, such as atrazine, exiting out of agricultural watersheds. Previous studies have found that microbial communities in soil from fields treated with atrazine display enhanced rates of atrazine degradation. However, no studies have examined the potential for atrazine degradation in d...
متن کاملAgricultural drainage ditches mitigate phosphorus loads as a function of hydrological variability.
Phosphorus (P) loading from nonpoint sources, such as agricultural landscapes, contributes to downstream aquatic ecosystem degradation. Specifically, within the Mississippi watershed, enriched runoff contributions have far-reaching consequences for coastal water eutrophication and Gulf of Mexico hypoxia. Through storm events, the P mitigation capacity of agricultural drainage ditches under no-t...
متن کاملImproved management of agricultural drainage ditches for water quality protection : An overview
Groundwater nitrogen (N) and phosphorus (P) transport from ditch-drained, cultivated fields has not been adequately investigated in the Chesapeake Bay watershed.We monitored hydrology and groundwater Nand P concentrations in 26 shallow (~3 m [10 ft]) wells for 27 months on a heavily ditched, poultry-grain farm on Maryland's Lower Eastern Shore. Water tables fluctuated above and below shallow di...
متن کاملVegetated agricultural drainage ditches for the mitigation of pyrethroid-associated runoff.
Drainage ditches are indispensable components of the agricultural production landscape. A benefit of these ditches is contaminant mitigation of agricultural storm runoff. This study determined bifenthrin and lambda-cyhalothrin (two pyrethroid insecticides) partitioning and retention in ditch water, sediment, and plant material as well as estimated necessary ditch length required for effective m...
متن کاملOccurrence of macrophyte monocultures in drainage ditches relates to phosphorus in both sediment and water
Monocultures of functional equivalent species often negatively affect nutrient cycling and overall biodiversity of aquatic ecosystems. The importance of water and sediment nutrients for the occurrence of monocultures was analysed using field data from drainage ditches. Ranges of nutrients were identified that best explained the occurrence of monocultures of Elodea nuttallii (Planch.) St. John (...
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ژورنال
عنوان ژورنال: Science of The Total Environment
سال: 2020
ISSN: 0048-9697
DOI: 10.1016/j.scitotenv.2019.134556