Long-term trends in eutrophication and nutrients in the coastal zone
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Long-term trends in eutrophication and nutrients in the coastal zone. / Clarke, Anne-Marie; Weckström, Kaarina; Conley, Daniel; Anderson, N. John; Adser, Finn; Andrén, Elinor; de Jonge, Victor; Ellegaard, Marianne; Juggins, S.; Kauppila, P.; Korhola, A.; Reuss, Nina Steenberg; Telford, R. J.; Vaalgamaa, S.
In: Limnology and Oceanography, Vol. 51, No. 1, part 2, 2006, p. 385-397.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Long-term trends in eutrophication and nutrients in the coastal zone
AU - Clarke, Anne-Marie
AU - Weckström, Kaarina
AU - Conley, Daniel
AU - Anderson, N. John
AU - Adser, Finn
AU - Andrén, Elinor
AU - de Jonge, Victor
AU - Ellegaard, Marianne
AU - Juggins, S.
AU - Kauppila, P.
AU - Korhola, A.
AU - Reuss, Nina Steenberg
AU - Telford, R. J.
AU - Vaalgamaa, S.
PY - 2006
Y1 - 2006
N2 - We used high-resolution paleoecological records of environmental change to study the rate and magnitude ofeutrophication over the last century in two contrasting coastal ecosystems. A multiproxy approach using geochemicaland biological indicators and diatom-based transfer functions provides a long-term perspective on changes in nutrientconcentrations and the corresponding biological and sedimentary responses. In Roskilde Fjord, Denmark, totalnitrogen (TN) increased 85% during the last century, with the most rapid increase occurring after the 1950s,corresponding to the postwar increase in N fertilizer use. In Laajalahti Bay, an urban embayment near Helsinki,Finland, total dissolved nitrogen (TDN) increased with growing wastewater inputs and decreased with the remedialactions taken to reduce these discharges. These changes are small relative to the order of magnitude increases innutrient loading that have occurred in northwestern Europe, where the dissolved inorganic nitrogen (DIN) load hasincreased more than threefold in certain areas.
AB - We used high-resolution paleoecological records of environmental change to study the rate and magnitude ofeutrophication over the last century in two contrasting coastal ecosystems. A multiproxy approach using geochemicaland biological indicators and diatom-based transfer functions provides a long-term perspective on changes in nutrientconcentrations and the corresponding biological and sedimentary responses. In Roskilde Fjord, Denmark, totalnitrogen (TN) increased 85% during the last century, with the most rapid increase occurring after the 1950s,corresponding to the postwar increase in N fertilizer use. In Laajalahti Bay, an urban embayment near Helsinki,Finland, total dissolved nitrogen (TDN) increased with growing wastewater inputs and decreased with the remedialactions taken to reduce these discharges. These changes are small relative to the order of magnitude increases innutrient loading that have occurred in northwestern Europe, where the dissolved inorganic nitrogen (DIN) load hasincreased more than threefold in certain areas.
M3 - Journal article
VL - 51
SP - 385
EP - 397
JO - Limnology and Oceanography
JF - Limnology and Oceanography
SN - 0024-3590
IS - 1, part 2
ER -
ID: 87757