Coastal ecology and palaeoecology of the Baltic and adjacent seas
  [Home]  [Concept]  [Projects]  [People]  [Training Sites]  [Taxa]  [Long Cores]  [Publications]  [Links]  [Data]
Login

MOLTEN DETECT and DEFINE output


Reports
Molten team (2004) MOLTEN management tool .
Download pdf document

Molten Team (2004) MOLTEN transfer function user guide .
Download pdf document

Molten Team (2004) MOLTEN transfer function software .
Download Windows software


Papers
Clarke, A.L., Juggins, S., and Conley, D.J. (2003) A 150-year reconstruction of the history of coastal eutrophication in Roskilde Fjord, Denmark. Marine Pollution Bulletin 46: 1615-1618.

Reuss, N., Conley, D.J. & Bianchi, T.S. (2005) Preservation conditions and the use of sediment pigments as a tool for recent ecological reconstruction in four Northern European estuaries Marine Chemistry 95: 283-302.

Clarke, A. L., Weckström, K, Conley, D. J., Anderson, N. J., Adser, F., Andrén, E., de Jonge, V. N., Ellegaard, M., Juggins, S., Kauppila, P., Korhola, A., Reuss, N., Telford, R. J., Vaalgamaa, S. (2005) Long-term trends in eutrophication and nutrients in the coastal zone. In press, Limnol. Oceanogr..

Weckström, K (Submitted) Assessing recent eutrophication in coastal waters of the Gulf of Finland (Baltic Sea) using subfossil diatoms. Journal of Paleolimnology..

Weckström, K., Juggins, S. & Korhola, A. (2004) Quantifying background nutrient concentrations in coastal waters: A case study from an urban embayment of the Baltic Sea. Ambio 33(6): 324-327..

Weckström, K. & Juggins, S. (In Press) Coastal diatom-environment relationships from the Gulf of Finland, Baltic Sea. Journal of Phycology..

Kauppila, P., Weckström, K., Vaalgamaa, S., Pitkänen, H., Korhola, A., Reuss, N. & Drew, S. (2005) Tracing pollution and recovery using sediments in an urban estuary, the northern Baltic Sea: Are we far from ecological reference conditions? Marine Ecology Progress Series 290: 35-53..

Weckström, K., Korhola, A. & Shemeikka, P. (2002) Physical and chemical characteristics of shallow embayments on the southern coast of Finland. Hydrobiologia 477: 115-127.
Download raw data

Regular water-quality monitoring is yielding a great number of hydrographical and chemical data regarding the brackish Baltic Sea. However, present monitoring programmes often do not include shallow and sheltered near-shore areas, which are adjacent to human population and used for recreation purposes. We collected new near-shore water quality data from the southern coast of Finland that will allow the definition of the present state of these systems and may serve as reference data for possible future monitoring programmes. The data set comprises 45 small and shallow embayments with a mean surface area of 211 ha and a mean depth of 4.3 m. According to redundancy analysis (RDA), catchment land use explained 20.3 % of the variance in the measured water chemistry. Agriculture had the strongest influence on the water quality of the study sites, capturing 13.1 % of the variance. Nitrogen seemed to be strongly related to agriculture, whereas phosphorus was correlated with urban areas and industry. Higher than average nutrient concentrations regularly occurred at the mouths of large rivers, or close to human settlement, emphasising the significance of local sources to the nutrient concentrations of coastal waters. No increasing trend in nutrient or chlorophyll-a concentrations was observed from west to east in these shallow and sheltered nearshore areas. This contrasts with earlier results from pelagic samplings that report a marked influence of the River Neva and St. Petersburg on the nutrient status of the Gulf of Finland. Because these shallow embayments are strongly influenced by the local nutrient load, continued measures must be undertaken to reduce the nutrient load from land to prevent the continued deterioration and eutrophication of the nearshore, coastal waters.


Popular
Andrén, E. (2005) Naturliga halter - vad är det? Historiska arkiv ger referensvärden. Miljötillståndet i Egentliga Östersjön Rapport 2005. tockholm Marine Research Centre, available on www.smf.su.se.

Andrén, E. (2005) Oral presentation broadcasted from the Swedish digital TV channel "Kunskapskanalen" 16 Mars 2005. Available from the web.


Presentations
Clarke, A.L., Weckström, K. & Andrén, E. (2002) Diatom-based transfer functions as a tool to study coastal eutrophication: the MOLTEN project. 17th International Diatom Symposium Ottawa, Canada 25-31 August, 2002.

Clarke, A.L. & Juggins, S. (2001) A diatom-based transfer function to infer historical changes in total nitrogen from coastal sediments. Invited oral presentation at ERF 2001: An Estuarine Odyssey 16th Biennial Conference of the Estuarine Research Federation St. Pete Beach, Florida, U.S.A. 4-8 November 2001.

Ellegaard, M. (2002) Dinoflagellate cysts as potential indicators of nutrient levels in the past. 10th International conference on harmful algae blooms St. Pete Beach, Florida. 20-25 October 2002.
Download Poster

Andrén, E., Clarke, A. & Weckström, K. (2004) Defining reference conditions for coastal areas in the Baltic Sea for the Water Framework Directive. Ten-year Jubilee Conference of the Foundation for Baltic and East European Studies, Sweden, 23-25 September 2004..

Clarke, A. (2004) Oral Oral presentation at the 18th International Diatom Symposium, Polen, 2-7 September 2004..

Clarke, A. (2005) Oral Oral presentation at the ASLO Aquatic Science Meeting, USA, 20-25 February 2005..

Conley, D. (2005) Oral Oral presentation at the HELCOM EUTRO meeting, January 2005..

Korhola, A. (2005) Oral Oral presentation at BIREME Annual Symposium, Finland, 9-11 February 2005..

Vilbaste, S., Andrén, E., Clarke, A., Telford, R. & Weckström, K. (2005) DEFINE - continuation of EU MOLTEN project. Preliminary results - diatoms from Estonian coastal waters. Nordic Diatomist Meeting, Estonia, 20-23 May 2005..

Weckström, K. & Juggins, S. (2005) Coastal diatom-environmental relationships from the Gulf of Finland, Baltic Sea. Poster presentation at the ASLO summer meeting, Spain, 19-24 June 2005..

Vaalgamaa, S. (2002) The eutrophication history of Laajalahti Bay, Helsinki City, as reflected by sediment geochemistry. ASLO 2002 Summer Meeting Inter-disciplinary Linkages in Aquatic Sciences and Beyond, Victoria, British Columbia, Canada.


Reports
Weckström, K., Vaalgamaa, S., Kangas, J. & Shemeikka, P. (2004) Hellänlahden rehevöitymishstoria paleolimologisin menetelmin arvioituna. [The eutrophication history of Hellänlahti - an assessment using palaeolimnological methods] Raportti Kaakkois-Suomen ympäristökeskukselle. 15 s. [Scientific Report to the Southeast Finland Regional Environment Centre. 15 p.].

Weckström, K., Vaalgamaa, S., Kangas, J. & Shemeikka, P. (2004) Uudenmaan merenlahtien rehevöitymishistoria paleolimnologisin menetelmin arvioituna: Pieni Pernajanlahti, Fasarbyviken, Varlaxviken, Nikuviken, "Insjön" ja Sipoonlahti. [The eutrophication history of coastal embayments in Uusimaa - an assessment using palaeolimnological methods: Pieni Pernajanlahti, Fasarbyviken, Varlaxviken, Nikuviken, "Insjön" and Sipoonlahti.] Raportti Uudenmaan ympäristökeskukselle sekä Porvoon, Pernajan ja Sipoon kunnille. 24 s. [Scientific Report to the Uusimaa Regional Environment Centre and the cities of Porvoo, Pernaja and Sipoo. 24 p.].


Theses
Clarke, A.L. (2001) A diatom-based transfer function to infer historical changes in total nitrogen concentration from coastal sediments: a case study from Roskilde Fjord, Denmark. PhD Thesis, University of Newcastle upon Tyne.