http://www.cnr.it/ontology/cnr/individuo/prodotto/ID203825

Sediment accumulation rates in European lakes since AD 1850: trends, reference conditions and exceedence (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

Sediment accumulation rates in European lakes since AD 1850: trends, reference conditions and exceedence (Articolo in rivista) (literal)

Anno

2011-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1007/s10933-010-9424-6 (literal)

Alternative label

Rose, NL (Rose, Neil L.)[ 1 ] ; Morley, D (Morley, David)[ 1 ] ; Appleby, PG (Appleby, Peter G.)[ 2 ] ; Battarbee, RW (Battarbee, Richard W.)[ 1 ] ; Alliksaar, T (Alliksaar, Tiiu)[ 3 ] ; Guilizzoni, P (Guilizzoni, Piero)[ 4 ] ; Jeppesen, E (Jeppesen, Erik)[ 5 ] ; Korhola, A (Korhola, Atte)[ 6 ] ; Punning, JM (Punning, Jaan-Mati)[ 7 ] (2011)
Sediment accumulation rates in European lakes since AD 1850: trends, reference conditions and exceedence
in Journal of paleolimnology
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Rose, NL (Rose, Neil L.)[ 1 ] ; Morley, D (Morley, David)[ 1 ] ; Appleby, PG (Appleby, Peter G.)[ 2 ] ; Battarbee, RW (Battarbee, Richard W.)[ 1 ] ; Alliksaar, T (Alliksaar, Tiiu)[ 3 ] ; Guilizzoni, P (Guilizzoni, Piero)[ 4 ] ; Jeppesen, E (Jeppesen, Erik)[ 5 ] ; Korhola, A (Korhola, Atte)[ 6 ] ; Punning, JM (Punning, Jaan-Mati)[ 7 ] (literal)

Pagina inizio

447 (literal)

Pagina fine

468 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni

ID_PUMA : r.ise/2011-A0-035. -- ID Modulo Commessa 4007 - TA.P02.014.002 - 094 - Modificazioni strutturali e funzionali degli ecosistemi acquatici anche in relazione al loro bacino imbrifero, in risposta ai cambiamenti meteo-climatici e, in particolare, in risposta alle deposizioni atmosferiche (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

45 (literal)

Rivista

Journal of paleolimnology (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

4 (literal)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

[ 1 ] UCL, Environm Change Res Ctr, London WC1E 6BT, England [ 2 ] Univ Liverpool, Dept Math Sci, Liverpool L69 3BX, Merseyside, England [ 3 ] Tallinn Univ Technol, Inst Geol, EE-19086 Tallinn, Estonia [ 4 ] CNR, ISE, Verbania, Italy [ 5 ] Univ Aarhus, Natl Environm Res Inst, Dept Freshwater Ecol, DK-8600 Silkeborg, Denmark [ 6 ] Univ Helsinki, Environm Change Res Unit, Dept Biol & Environm Sci, Helsinki, Finland [ 7 ] Tallinn Univ, Inst Ecol, EE-10120 Tallinn, Estonia (literal)

Titolo

Sediment accumulation rates in European lakes since AD 1850: trends, reference conditions and exceedence (literal)

Abstract

Sediment accumulation rate (SAR) is an important physical parameter in all lakes and increases have been observed in many over the last c.100 years. This has been ascribed to changes in land-use and land-management causing accelerated catchment soil erosion and an increase in autochthonous organic matter production. The EU Water Framework Directive requires that assessment of biological, hydromorphological and chemical elements of water quality should be based on the degree to which present day conditions deviate from those expected in the absence of significant anthropogenic influence, termed reference conditions. Currently however, the reference condition for sediment accumulation rate for lakes of different types is undefined. To improve our understanding of the controls on SARs we compiled SAR and lake typology data for 207 European lakes derived from (210)Pb dated cores to assess how rates have changed through time (in 25 year classes) both overall and for lakes of different types. Seventy-one percent of these sediment cores showed surface SARs higher than \"basal\" (mainly nineteenth century) rates, 11% showed no change while 18% showed a decline. Lakes were then classified into lake-types using four variables: alkalinity (3 classes), altitude (3 classes), maximum depth (2 classes) and lake area (2 classes). This generated a possible 36 lake classes of which 25 were represented in the dataset. Nine lake-types contained > 10 lakes. Little change in SAR occurred prior to 1900 and most increases occurred in more recent periods, in particular 1950-1975 and post-1975. This indicates a general acceleration in SAR in European lakes during the second half of the twentieth century. Reference SARs were estimated for six lake-types with the highest number of sites. European mountain lakes had the lowest reference SAR (0.005 +/- A 0.003 g cm(-2) yr(-1)) while lowland, high alkalinity sites had the highest (0.03-0.04 g cm(-2) yr(-1)). SARs for other lake-types ranged between 0.012 and 0.024 g cm(-2) yr(-1). Using the mountain lake-type as an example, the 1850 reference SAR appears to show good agreement with available data for lakes beyond Europe indicating these values may be more broadly applicable. Contemporary SARs in lakes of all classes showed exceedence over their defined reference SAR. This may be partly due to diagenetic processes. Greatest exceedences were found in shallow, low altitude lakes and these are considered to be the ones under the greatest threat from continued elevation of SAR. It is considered that climate change may play a progressively more important role in driving SAR in the future. (literal)

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