Lake eutrophication at the urban fringe, Seattle region, USA.

Twenty-five years of sprawl in the Seattle region: growth management responses and implications for conservation

To study the effects of growth management efforts on urban fringe areas in Washington State’s Puget Sound region, USA, this study documents and quantifies transformations in land cover and land-use from 1974 to 1998 for a 474 km2 study area east of Seattle. Geo-referenced aerial photographs (orthophotos) were digitized, then classified, to compare patch patterns (clustered versus dispersed vege...

Institutional Barriers to the Application of Urban Village as a Tool for Achieving Urban Sustainability in Developing Countries - the Case of Asheghabaad, Isfahan, Iran.

Redox Stratification and Salinization of Three Kettle Lakes in Southwest Michigan, USA

Redox stratification, especially hypolimnetic anoxia resulting from eutrophication, and salinization resulting from application of salts for road deicing is investigated in three kettle lakes in southwest Michigan. Two of the lakes (Asylum and Woods Lakes) are located in urban Kalamazoo, Michigan, and the third (Brewster Lake) is located in rural Hastings, Michigan. In summer, the water columns...

Assessment of Carson Trophic Index in Dam Lake: a Case Study of Ekbatan Dam

Background and purpose: The study aimed to investigate the trophic state of Ekbatan Dam Lake. In the current research, the quality of water behind the dam was studied during the months July and January in order to compare the trophic state and zonation of the reservoir in two different seasons (dry and wet). Materials and Methods: 15 sites were selected in different points of Ekbatan Dam Lak...

A Holocene Sediment Record of Phosphorus Accumulation in Shallow Lake Harris, Florida (USA) Offers New Perspectives on Recent Cultural Eutrophication

We studied a complete Holocene sediment record from shallow (zmax = 9.7 m) Lake Harris, Florida (USA) to infer the historical development of the lake and its current eutrophic status. We used (210)Pb and (14)C to date the 5.9-m sediment sequence (core LH-6-13) and determined accumulation rates for bulk sediment, organic matter, calcium carbonate, phosphorus fractions and biogenic silica fractio...