The History of Cyanobacterial Blooms in the Baltic Sea

Finni, Terttu; Kononen, Kaisa; Olsonen, Riitta; Wallström, Kerstin

doi:10.1639/0044-7447(2001)030[0172:thocbi]2.0.co;2

Cited by 69 publications

(53 citation statements)

References 11 publications

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“…The enthalpy analysis of the model results points to consistently higher temperatures in the Gotland and Bornholm Sea than in the coastal rim, a situation also favorable for stratification and the growth of cyanobacteria [ Wasmund , 1997]. Observations of increased bloom activities since the 1960s are in accordance with this scenario [ Finni et al , 2001]. Cyanobacteria biomass is remineralized and the resulting nitrate captured in the closed circulation cell.…”

Section: Discussionmentioning

confidence: 88%

Nitrogen cycle of the Baltic Sea from an isotopic perspective

Voß

Emeis

Hille

et al. 2005

Global Biogeochemical Cycles

115

114

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Section: Discussionmentioning

confidence: 88%

Nitrogen cycle of the Baltic Sea from an isotopic perspective

Voß

Emeis

Hille

et al. 2005

Global Biogeochemical Cycles

115

114

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“…Here, dense blooms of diazotrophic filamentous cyanobacteria are formed every summer in the near-surface water mass (Larsson et al 2001;Wasmund et al 2001). These blooms have increased along with elevated external nutrient loads during the recent century (Finni et al 2001). Despite successful reductions in external loads during the recent decades (Gustafsson et al 2012), the abundance of filamentous cyanobacteria is still increasing (Kahru and Elmgren 2014).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen fixation estimates for the Baltic Sea indicate high rates for the previously overlooked Bothnian Sea

Olofsson

Klawonn

Karlson

2020

Ambio

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Dense blooms of diazotrophic filamentous cyanobacteria are formed every summer in the Baltic Sea. We estimated their contribution to nitrogen fixation by combining two decades of cyanobacterial biovolume monitoring data with recently measured genera-specific nitrogen fixation rates. In the Bothnian Sea, estimated nitrogen fixation rates were 80 kt N year-1 , which has doubled during recent decades and now exceeds external loading from rivers and atmospheric deposition of 69 kt year-1. The estimated contribution to the Baltic Proper was 399 kt N year-1 , which agrees well with previous estimates using other approaches and is greater than the external input of 374 kt N year-1. Our approach can potentially be applied to continuously estimate nitrogen loads via nitrogen fixation. Those estimates are crucial for ecosystem adaptive management since internal nitrogen loading may counteract the positive effects of decreased external nutrient loading.

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“…This convention entered into force in 2000. Similarly, the excess nitrogen in the Mississippi river has resulted in an anoxic ‘dead zone’ in the Gulf of Mexico 5,6. The Black Sea, which is an inland sea, is a third example where large phytoplankton blooms have been observed annually.…”

Section: Introduction: Sources Of Water Pollution In Bioenergy Producmentioning

confidence: 99%

Water quality assessment of bioenergy production

Díaz‐Chavez¹,

Berndes²,

Neary³

et al. 2011

Biofuels Bioprod Bioref

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Water quality is a measurement of the biological, chemical, and physical characteristics of water against certain standards set to ensure ecological and/or human health. Biomass production and conversion to fuels and electricity can impact water quality in lakes, rivers, and aquifers with consequences for aquatic ecosystem health and also human water uses. Depending on how the bioenergy system is located and managed, it can lead to both water quality deterioration and to improvements. This review focuses on the effects of bioenergy on water quality, on ways to quantify these effects, and on options for reducing negative impacts.

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The History of Cyanobacterial Blooms in the Baltic Sea

Cited by 69 publications

References 11 publications

Nitrogen cycle of the Baltic Sea from an isotopic perspective

Nitrogen cycle of the Baltic Sea from an isotopic perspective

Nitrogen fixation estimates for the Baltic Sea indicate high rates for the previously overlooked Bothnian Sea

Water quality assessment of bioenergy production

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