Search Results

You are looking at 1 - 10 of 97 items for :

  • eutrophication x
Clear All

causes of eutrophication before focusing on fertilizer and nutrient management in the urban landscape. The article concludes that the fertilizer restrictive periods in Florida may not necessarily improve urban water quality ( Hochmuth et al., 2009 ). In

Open Access

environmental impacts, including ozone depletion, smog, acidification, eutrophication, carcinogenic or non-carcinogenic human toxicity, respiratory effects, ecotoxicity, and fossil fuel depletion [ U.S. Environmental Protection Agency (USEPA), 2008 ]. These are

Free access
Author:

, become justification for regulatory action enforced at the city, state, and/or federal level in an effort to decrease nutrient enrichment of water bodies ( Conley et al., 2009 ). Nutrient enrichment, also called eutrophication, can be broadly defined as

Free access

common problem in many areas and soils. Leaching is considered to be the prevailing cause for the increase of nitrate concentrations in groundwater, and directly responsible for ecosystem eutrophication, and soil and water quality degradation ( Rivett et

Open Access

use manures or composts as nutrient sources, because P inputs to fresh water ecosystems are a primary cause of eutrophication and water quality degradation ( Correll, 1998 ). Algal growth in most freshwater systems is P-limited; therefore, P inputs

Full access
Authors: and

The economics of producing sweet corn (Zea mays L.) and head lettuce (Lactuca sativa L.) on Florida Histosols were analyzed with and without P application constraints based upon quadratic response functions derived from two experiments with each crop. At the lower end of the historical price range, production of both crops is unprofitable, especially when P is constrained. At higher prices, net returns for sweet corn under P constraints are relatively small compared with the capital invested; net returns are higher for lettuce. However, an analysis of historical monthly prices showed that those high prices rarely occur. Values for the marginal contribution of the last unit of P show that constraints greatly limit net returns. Many sweet corn and head lettuce producers may be forced out of business if P fertilization rates are arbitrarily lowered below the economic optimal rate.

Free access

Increasing eutrophication or nutrient enrichment of fresh and coastal waters is a serious and growing concern ( Diaz and Rosenberg, 2008 ; Heisler et al., 2008 ). Eutrophication is largely the result of human activities in managing land, plants

Full access

stormwater discharge maximum (2 mg/L) (USEPA 2015) and threshold to prevent the development of biological nuisances and to control eutrophication (0.05 g/L) (USEPA 1986) are included as solid and dashed lines, respectively. Potassium. The two

Open Access

assessments ( Poloprutská et al. 2021 ), and a living wall as a potential filter ( Farb 2020 ). Of particular concern for NSPs are nitrogen (N) and phosphorus (P) levels because of their association with eutrophication and subsequent high algae levels

Open Access

organic matter can lead to eutrophication ( Eyras et al., 1998 ) and can entrap marine life ( Langin, 2018 ). In 2011, brown seaweed was added to the Global Invasive Species Database ( Invasive Species Specialist Group, 2011 ). While excessive, nonnative

Open Access