Contrasting Relationships Between Nutrients, Chlorophyllaand Secchi Transparency in Two Shallow Subtropical Lakes: Lakes Okeechobee and Apopka (Florida, USA)

Secchi transparency of Boulder Basin, Lake Mead, Arizona-Nevada: 1990–2007

“…11; note 0 on y-axis is at bottom). Similar strong relationships are described by Carlson (1977) and Havens et al (1999). Biological production in Lake Mead is plainly limited by phosphorus (Hoffman et al 1971, Deacon 1975, Goldman 1976, Paulson and Baker 1981, Paulson 1986, 1987, Lieberman 1995, LaBounty and Horn 1997, Reginato and Peichota 2004, LaBounty and Burns 2005.…”

“…The relationships between Secchi transparency and other parameters, such as chlorophyll and nutrient enrichment, have been the subject of numerous investigations (Brezonik and Shannon 1971, Beeton and Edmondson 1972, Larson 1972, Dillon and Rigler 1974, Carlson 1977, Havens et al 1999, Stadelmann et al 2001, Erlandsson and Stigebrandt 2006. Secchi depth is used as one of the parameters to calculate various trophic indices, including the Trophic Status Index (TSI) by Carlson 1977 and the Trophic Level Index (TLI) by Burns et al 1999; both indices were used in the Boulder Basin analyses (LaBounty and Burns 2005).…”

Nutrient dynamics and the eutrophication of shallow lakes Kasumigaura (Japan), Donghu (PR China), and Okeechobee (USA)

“…One approach that is useful for identifying general properties of shallow lakes is the comparison of research results from dierent ecosystems, as has been done with some lakes in Europe (Sas, 1989) and the USA (Havens et al, 1999). This is the objective of this paper, which is a product of a shallow lake workshop held in Tsukuba, Japan, in October 1993, at the National Institute for Environmental Studies (NIES).…”

A Study on Trophic State in Lakes of Dong Da District, Hanoi

“…Havens et al [15] suggested that in some lakes, a predominance of pico-plankton-sized algae might also result in negative deviations between TSI(Chl) and TSI(SD). Points lying on the diagonal to the left of the origin indicate situations where phosphorus and transparency are correlated, but not Chlorophyll-a.…”