Results 91 to 100 of about 155,598 (201)

Water discharge and nutrient leaching from organic mixed crop rotation [PDF]

open access: yes, 2006
Water discharge and nutrient leaching studies were conducted in an experimental field under organic farming practice for 20 years. The water discharge measurements cover five years out of a six-year crop rotation.
Kuisma, Miia, Seuri, Pentti
core  

Environmental aspects of soil phosphorus testing [PDF]

open access: yes, 2005
peer-reviewedSoil phosphorus testing in Ireland uses Morgan’s reagent from samples taken to 10 cm depth for agronomic recommendations. However, its suitability as an environmental indicator has been questioned in terms of sample depth and extraction ...
Casey, A., Daly, Karen M.
core  

Effects of external nutrient sources and extreme weather events on the nutrient budget of a Southern European coastal lagoon [PDF]

open access: yes, 2016
The seasonal and annual nitrogen (N), phosphorus (P), and carbon (C) budgets of the mesotidal Ria Formosa lagoon, southern Portugal, were estimated to reveal the main inputs and outputs, the seasonal patterns, and how they may influence the ecological ...
A Cravo   +71 more
core   +1 more source

Swiss data quality: augmenting CAMELS-CH with isotopes, water quality, agricultural and atmospheric data

open access: yesScientific Data
Despite the growth of large-sample hydrology (LSH) datasets, water quality data remain scarce. Here, we introduce CAMELS-CH-Chem, an extension of CAMELS-CH (Catchment Attributes and Meteorology for Large-sample Studies in Switzerland), incorporating up ...
Thiago V. M. do Nascimento   +12 more
doaj   +1 more source

Zooplankton response to organic carbon level in lakes of differing trophic states

open access: yesKnowledge and Management of Aquatic Ecosystems, 2014
Water eutrophication is associated with an increase in the organic carbon content (both particulate and dissolved forms), which may affect the functioning of the zooplankton community.
Bowszys M., Dunalska J.A., Jaworska B.
doaj   +1 more source

Nitrogen, Phosphorus, and Suspended Solids Concentrations in Tributaries to the Great Bay Estuary Watershed in 2013 [PDF]

open access: yes, 2014
Nitrogen, phosphorus, and sediment loads to the Great Bay Estuary are a growing concern. The Piscataqua Region Estuaries Partnership (PREP) calculates the nitrogen load from tributaries to the Great Bay Estuary for its State of Our Estuaries reports ...
Trowbridge, Philip, Wood, Matt A
core   +1 more source

Proteomic and biogeochemical perspectives on cyanobacteria nutrient acquisition – Part 1: Zonal gradients in phosphorus and nitrogen acquisition and stress revealed by metaproteomes of Prochlorococcus and Synechococcus [PDF]

open access: yesBiogeosciences
Ocean productivity is maintained by key nutrients, including nitrogen, phosphorus and trace metals. The magnitude and stoichiometry of nutrient fluxes to the ocean is changing.
C. Mahaffey   +14 more
doaj   +1 more source

Some effects of Hurricane Agnes on water quality in the Patuxent River Estuary [PDF]

open access: yes, 1975
A post-Agnes study that emphasized environmental factors was carried out on the Patuxent River estuary with weekly sampling at eight stations from 28 June t o 30 August 1972.
Flemer, David A.   +2 more
core  

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