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Rentz, Ralf
Publications (10 of 10) Show all publications
Blecken, G.-T., Rentz, R., Malmgren, C., Öhlander, B. & Viklander, M. (2012). Stormwater impact on urban waterways in a cold climate: variations in sediment metal concentrations due to untreated snowmelt discharge (ed.). Paper presented at . Journal of Soils and Sediments, 12(5), 758-773
Open this publication in new window or tab >>Stormwater impact on urban waterways in a cold climate: variations in sediment metal concentrations due to untreated snowmelt discharge
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2012 (English)In: Journal of Soils and Sediments, ISSN 1439-0108, E-ISSN 1614-7480, Vol. 12, no 5, p. 758-773Article in journal (Refereed) Published
Abstract [en]

Purpose: Stormwater discharges include contaminated sediments that accumulate in the receiving water body. It is thus important to investigate sediment and pollutant processes and pathways from the catchment to, and within, the receiving water. These processes may be influenced by seasonal changes. The objective of this study was to investigate the stormwater impact on receiving waters in the Luleå area, Northern Sweden; seasonal changes in contamination loads in the receiving waters due to snowmelt; and factors influencing the pollutant pathways in the receiving waters. Materials and methods: In front of three storm sewer outlets in Luleå, samples of bottom sediment (surface layer 0-2 cm) were collected from the connecting ditches and the downstream water body in autumn and spring (before and after the snow season 2009/2010). The characteristics of the receiving waters differed in geomorphology and vegetation. The sediment was analyzed for loss-on-ignition (LOI), grain size, and bulk concentrations of SiO 2, Al 2O 3, CaO, Fe 2O 3, MnO, Na 2O, P 2O 5, TiO 2, As, Cd, Co, Cr, Cu, Hg, Ni, Pb, S, V, and Zn. The sediment contamination was compared to concentrations at a reference point in Luleå where the bottom sediment was not affected by stormwater discharges and with Swedish environmental quality guidelines. Pearson's correlation and a principal component analysis were used to further evaluate the results. Results and discussion: Relative to the reference point, elevated trace metal concentrations were detected in sediments at all three sampling stations. At two of the stations, seasonal variations in ditch sediment grain size, LOI, and contaminant concentrations were observed, originating from stormwater sediment. Snowmelt runoff caused an increased proportion of fine-grained sediment fractions (<0.063 mm) in spring, mainly due to changes in runoff intensity and high sediment loads in the snowmelt runoff. The retention of metals appeared to be due to low turbulence in the water and the presence of organic material. Conclusions: Stormwater discharge affected the contaminant concentrations in the bottom sediments. The observed seasonal variation of contaminants indicated that relatively high amounts of contaminants are discharged during snowmelt and then reallocated within the receiving water body, either directly or after some temporal retention, depending on the characteristics of the receiving water. A calm water column and the presence of organic material in the receiving water body were crucial for the retention of metals

National Category
Water Engineering Geochemistry Reliability and Maintenance
Research subject
Urban Water Engineering; Applied Geology; Quality Technology and Management
Identifiers
urn:nbn:se:ltu:diva-16354 (URN)10.1007/s11368-012-0484-2 (DOI)000302869900011 ()2-s2.0-84859782104 (Scopus ID)ffb31525-e7a9-445c-8886-f10b314a972f (Local ID)ffb31525-e7a9-445c-8886-f10b314a972f (Archive number)ffb31525-e7a9-445c-8886-f10b314a972f (OAI)
Note
Validerad; 2012; 20120208 (godble)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Rentz, R. & Öhlander, B. (2012). Urban impact on water bodies in the Luleå area, northern Sweden, and the role of redox processes (ed.). Paper presented at . Nordic Hydrology, 43(6), 917-932
Open this publication in new window or tab >>Urban impact on water bodies in the Luleå area, northern Sweden, and the role of redox processes
2012 (English)In: Nordic Hydrology, ISSN 0029-1277, E-ISSN 1996-9694, Vol. 43, no 6, p. 917-932Article in journal (Refereed) Published
Abstract [en]

Sediment and water from urban water bodies in the Luleå area, northern Sweden, were studied to determine the degree of contamination from metals and PAHs (polycyclic aromatic hydrocarbons). The heavy metals Cd, Cu, Pb and Zn, which are of main concern in urban stormwater, are enriched in all investigated bays. PAH concentrations were also found to be enriched. The water and sediment quality of the investigated water bodies depends on catchment area characteristics and emission impact, from point sources in particular. Water volume and turnover rate in the water bodies with low water levels and no surface runoff during wintertime, and ice covering during winter, contribute to anoxic conditions in the water column and sediments. The present redox conditions in the water bodies predominantly cause fixation of pollutants in the sediment due to formation of sulphides and slow oxidation of organic pollutants. Postglacial land uplift implies continuous changes in the environment, which can lead to changing redox conditions, thereby necessitating new risk assessments.

National Category
Geochemistry
Research subject
Applied Geology
Identifiers
urn:nbn:se:ltu:diva-6382 (URN)10.2166/nh.2011.167 (DOI)000311258600013 ()2-s2.0-84859782042 (Scopus ID)49d6a6b6-0201-4ed1-b586-ef45e6c387c3 (Local ID)49d6a6b6-0201-4ed1-b586-ef45e6c387c3 (Archive number)49d6a6b6-0201-4ed1-b586-ef45e6c387c3 (OAI)
Note
Validerad; 2012; 20110501 (ralren)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Rentz, R., Widerlund, A., Viklander, M. & Öhlander, B. (2011). Impact of urban stormwater on sediment quality in an enclosed bay of the Lule river, northern Sweden (ed.). Paper presented at . Water, Air and Soil Pollution, 218(1-4), 651-666
Open this publication in new window or tab >>Impact of urban stormwater on sediment quality in an enclosed bay of the Lule river, northern Sweden
2011 (English)In: Water, Air and Soil Pollution, ISSN 0049-6979, E-ISSN 1573-2932, Vol. 218, no 1-4, p. 651-666Article in journal (Refereed) Published
Abstract [en]

Sediment and porewater samples from an enclosed bay receiving stormwater discharge (Skutviken) near the centre of Luleå, northern Sweden were analysed for major and trace elements and 16 polycyclic aromatic hydrocarbons (PAHs). Among the studied metals Cd, Cu, Pb and Zn were enriched at Skutviken. Also, the PAH content was enriched, in particular for phenantrene, anthracene, fluoranthene and pyrene which are regarded as common constituents in stormwater. The use of trace metal ratios provided indications about pollutant sources for the sediment. Cs-137 dating was used to determine historical changes in metal and PAH fixation in the sediment. The bay Skutviken is enclosed through the construction of a road bank since 1962. The enclosure led to reduced water circulation in the bay that promotes the occurrence of anoxic conditions with sulphate reduction within the bay. As a consequence of these conditions, metals are trapped in the sediments as sulphides. This study suggests that enclosed bays with restricted water circulation may be efficient traps for urban pollutants, reducing the present-day input of pollutants to the sea. In areas with postglacial land uplift, where such bays are common, bay sediments are a potential future source of pollutants when uplift results in erosion and oxidation of the sedi

National Category
Geochemistry Water Engineering
Research subject
Applied Geology; Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-8686 (URN)10.1007/s11270-010-0675-7 (DOI)000290724400057 ()2-s2.0-80053569252 (Scopus ID)739964f0-f08a-11df-8b36-000ea68e967b (Local ID)739964f0-f08a-11df-8b36-000ea68e967b (Archive number)739964f0-f08a-11df-8b36-000ea68e967b (OAI)
Note
Validerad; 2011; 20101115 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Rentz, R., Blecken, G.-T., Malmgren, C., Öhlander, B. & Viklander, M. (2011). Stormwater impact on urban water bodies: seasonal variations in sediment metal concentrations in a cold climate - preliminary results (ed.). Paper presented at International Conference on Urban Drainage : 11/09/2011 - 15/09/2011. Paper presented at International Conference on Urban Drainage : 11/09/2011 - 15/09/2011.
Open this publication in new window or tab >>Stormwater impact on urban water bodies: seasonal variations in sediment metal concentrations in a cold climate - preliminary results
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2011 (English)Conference paper, Oral presentation only (Other academic)
Abstract [en]

In this paper, preliminary results of a study investigating the impact of stormwater discharges on the bottom sediment of stormwater recipients in Luleå, northern Sweden are presented. The aim was to evaluate sediment metal concentrations taken in front of stormwater sewer discharge points from two ditches/recipients, their seasonal variation and the influence of geomorphology and vegetation on the metal distribution. Compared with northern Sweden background values, the Cd, Cu, Pb and Zn concentrations in the sediment samples were elevated. However, besides stormwater discharges, local sulphide soils in the catchment areas can affect the metal concentrations. Partly, seasonal variations in the metal concentrations were noticed; higher metal concentrations were observed in spring associated with a high LOI content and large fractions of fine grain size particles (<0.125 mm). Low/no runoff in winter and metal accumulation in snow followed by continuous snow melt runoff transports mostly fine grain sizes and therewith associated metals, which then settle and accumulate in the ditches/recipients. Dense reed vegetation can retain coarse grain sizes and supplies the sediment with decomposing organic material. Decomposition processes affect the redox conditions in the sediment through oxygen consumption. In the reduced sediment metals can be trapped in combination with sulphide formation.

National Category
Geochemistry Water Engineering Reliability and Maintenance
Research subject
Applied Geology; Urban Water Engineering; Quality Technology and Management
Identifiers
urn:nbn:se:ltu:diva-33000 (URN)7b530cfe-67f0-4f23-b77f-cad7c8994d47 (Local ID)7b530cfe-67f0-4f23-b77f-cad7c8994d47 (Archive number)7b530cfe-67f0-4f23-b77f-cad7c8994d47 (OAI)
Conference
International Conference on Urban Drainage : 11/09/2011 - 15/09/2011
Note
Godkänd; 2011; 20111209 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
Rentz, R. (2011). Water and sediment quality of urban water bodies in cold climates (ed.). (Doctoral dissertation). Paper presented at . Luleå: Luleå tekniska universitet
Open this publication in new window or tab >>Water and sediment quality of urban water bodies in cold climates
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Alternative title[sv]
Vatten- och sedimentkvalitet i urbana vatten i kallt klimat
Abstract [en]

The aim of this study was to investigate and quantify pollution impact on urban waterbodies in cold climates and to find out which complex processes and influencing factors causetrapping or spread of pollutants. In order to do that water, sediment and porewater samplesfrom bays and stormwater ditches in Luleå, northern Sweden, and from an artificialstormwater pond in Sollentuna, south-central Sweden, were analysed for LOI, trace metalsand PAHs. For surface water the particular, colloidal and truly dissolved elementconcentrations were determined by membrane filtration (0.22 μm pore size, 142 mmdiameter, Millipore® mixed cellulose esters) and ultrafiltration in a Millipore® Prep/Scalesystem (manufacturer specified cut-off of 1 kDa and a filter membrane area of 0.54 m2).Sediment and porewater samples from bays in Luleå, receiving stormwater discharge,showed enrichment of Cd, Cu, Pb and Zn. Also the PAH content was enriched, in particularfor phenantrene, anthracene, fluoranthene and pyrene. Water volume and turnover rate in thewater bodies with low or no surface runoff during wintertime, and ice covering, contribute toanoxic conditions in the water column and sediments. The enclosure of the bay Skutviken in1962 illustrates for how reduced water circulation promotes the occurrence of anoxicconditions with sulphate reduction. As a consequence of these conditions, metals are trappedin the sediments as sulphides. The use of trace metal ratios could not indicate road runoff asmain source for sediment pollution. The degree of pollution was higher in the sediments ofthe bays in Luleå than in a 1998 implemented, stormwater pond in Sollentuna, which receiveshighway runoff.Water concentrations of Cd, Co, Cr, Cu, Fe, Mn, Na, Ni, Pb, S, and Zn showed seasonalvariations in Sollentuna. In winter de-icing agents and use of studded tires cause higher metalconcentrations of Co, Cr, Cu, Ni, Mn, Na, and Zn dominated by the truly dissolved phase. InLuleå depletion of oxygen under the thick ice cover can change the redox border from belowsediment surface to above.The sediment in stormwater draining ditches in Luleå showed seasonal variations in grainsize, LOI and metal concentrations. Low runoff intensity in winter enables fine grainsediments to settle already in the ditches. A group of variables that had significant positivecorrelation between each other were Fe2O3 and LOI, Cd, Co, Ni and Zn.Water and sediment quality of the investigated water bodies depends on catchment areacharacteristics and emission impact, from point sources in particular. At all sites, includingthe stormwater pond, retention of metals seems to be favoured by stagnant water andoccurrence of organic material. Pollutants can be trapped due to sorption to organic material,and early diagenetic processes with formation of Mn- and Fe-hydroxides and sulphidereduction. In the stormwater pond this affects only a fraction of the metals in truly dissolvedphase in the water column, while most of the dissolved concentrations will be released to therecipientIn Luleå postglacial land uplift implies continuous changes in the environment, which canlead to changing redox conditions which will necessitate new risk assessments. Futuredrainage of the buried sediments can result in oxidation and release of trapped pollutants.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2011. p. 44
Series
Doctoral thesis / Luleå University of Technology 1 jan 1997 → …, ISSN 1402-1544
National Category
Geochemistry
Research subject
Applied Geology
Identifiers
urn:nbn:se:ltu:diva-26048 (URN)c50c8a16-f434-4356-858a-11327197eaa3 (Local ID)978-91-7439-272-2 (ISBN)c50c8a16-f434-4356-858a-11327197eaa3 (Archive number)c50c8a16-f434-4356-858a-11327197eaa3 (OAI)
Note
Godkänd; 2011; 20110512 (ralren); DISPUTATION Ämnesområde: Tillämpad Geologi/Applied Geology Opponent: Professor Stefan Karlsson, Akademin för naturvetenskap och teknik, Örebro universitet Ordförande: Professor Björn Öhlander, Institutionen för samhällsbyggnad och naturresurser, Luleå tekniska universitet Tid: Onsdag den 15 juni 2011, kl 10.15 Plats: F341, Luleå tekniska universitetAvailable from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-24Bibliographically approved
Ecke, F., Christensen, P., Rentz, R., Nilsson, M., Sandström, P. & Hörnfeldt, B. (2010). Landscape structure and the long-term decline of cyclic grey-sided voles in Fennoscandia (ed.). Paper presented at . Landscape Ecology, 25(4), 551-560
Open this publication in new window or tab >>Landscape structure and the long-term decline of cyclic grey-sided voles in Fennoscandia
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2010 (English)In: Landscape Ecology, ISSN 0921-2973, E-ISSN 1572-9761, Vol. 25, no 4, p. 551-560Article in journal (Refereed) Published
Abstract [en]

Changes in forest landscape structure have been suggested as a likely contributing factor behind the long-term decline in the numbers of cyclic grey-sided voles (Clethrionomys rufocanus) in northern Fennoscandian lowland regions in contrast to mountain regions due to the absence of forest management in the mountains. This study, for the first time, formally explored landscape structure in 29 lowland (LF) and 14 mountain forest (MF) landscapes (each 2.5 × 2.5 km) in northern Sweden, and related the results to the cumulated spring trapping index of the grey-sided vole in 2002-2006. The grey-sided vole showed striking contrasts in dynamics close in space and time. The MF landscapes were characterized by larger patches and less fragmentation of preferred forest types. The grey-sided vole was trapped in all of 14 analyzed MF landscapes but only in three out of 29 of the LF landscapes. MF and LF landscapes with grey-sided vole occurrence were characterized by similar focal forest patch size (mean 357 ha, minimum 82 ha and mean 360 ha, minimum 79 ha, respectively). In contrast, these MF compared to the LF landscapes were characterized by larger patches of preferred forest types and less fragmented preferred forest types and by a lower proportion of clear-cut areas. The present results suggest that landscape structure is important for the abundance of grey-sided voles in both regions. However, in the mountains the change from more or less seasonal dynamics to high-amplitude cycles between the mid 1990s and 2000s cannot be explained by changes in landscape structure.

National Category
Ecology Geochemistry
Research subject
Landscape Ecology; Applied Geology
Identifiers
urn:nbn:se:ltu:diva-11511 (URN)10.1007/s10980-009-9441-x (DOI)000275444100005 ()2-s2.0-77952745399 (Scopus ID)a80f9c50-fc42-11de-bae5-000ea68e967b (Local ID)a80f9c50-fc42-11de-bae5-000ea68e967b (Archive number)a80f9c50-fc42-11de-bae5-000ea68e967b (OAI)
Note
Validerad; 2010; 20100108 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Rentz, R., Widerlund, A., Viklander, M. & Öhlander, B. (2009). Impact of urban stormwater on sediment quality in an enclosed bay of the Lule River, northern Sweden (ed.). Paper presented at Annual V.M. Goldschmidt Conference : 21/06/2009 - 26/06/2009. Geochimica et Cosmochimica Acta, 73(13, suppl. 1), A1090
Open this publication in new window or tab >>Impact of urban stormwater on sediment quality in an enclosed bay of the Lule River, northern Sweden
2009 (English)In: Geochimica et Cosmochimica Acta, ISSN 0016-7037, E-ISSN 1872-9533, Vol. 73, no 13, suppl. 1, p. A1090-Article in journal, Meeting abstract (Other academic) Published
Abstract [en]

Sediment samples and porewater of an enclosed bay (Skutviken) affected by stormwater discharge near the centre of Luleå, northern Sweden, were analyzed for major and trace elements and 16 polycyclic aromatic hydrocarbons (PAHs), and compared to a reference site and local till. Among the studied metals, Cd, Cu, Pb and Zn were enriched at Skutviken. The use of trace metal ratios provided indications of pollutant sources for the sediment. Also, the PAH content was enriched, in particular for phenantrene, anthracene, fluoranthene and pyrene, which are regarded as common constituents in stormwater. Pb-210 dating was used to determine historical changes in metal and PAH fixation in the sediment. The bay Skutviken was enclosed by the construction of a road bank in 1962. The enclosure led to reduced water circulation in the bay, which promoted the occurrence of anoxic conditions with sulphate reduction within the bay. As a consequence of these conditions, metals are trapped in the sediments as sulphides. This study suggests that enclosed bays with restricted water circulation may be efficient traps for urban pollutants. In areas with postglacial rebound, where such bays are common, enclosure may have an important impact on water and sediment qualities. Due to the postglacial uplift, presently water covered sediments may rise above the groundwater level in the future. These sediments may then become a secondary pollution source if metal sulphides are oxidized.

Keywords
Natural sciences - Earth sciences, Naturvetenskap - Geovetenskap
National Category
Geochemistry Water Engineering
Research subject
Applied Geology; Urban Water Engineering
Identifiers
urn:nbn:se:ltu:diva-29651 (URN)10.1016/j.gca.2009.05.014 (DOI)330f1580-67bd-11de-9f57-000ea68e967b (Local ID)330f1580-67bd-11de-9f57-000ea68e967b (Archive number)330f1580-67bd-11de-9f57-000ea68e967b (OAI)
Conference
Annual V.M. Goldschmidt Conference : 21/06/2009 - 26/06/2009
Note

Godkänd; 2009; 20090703 (ralren)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-30Bibliographically approved
Ecke, F., Engström, E., Rentz, R. & Husson, E. (2009). Sediment and water interactions with macrophyte element concentrations and community structure (ed.). Paper presented at Aquatic Weeds 2009 : 24/08/2009 - 28/08/2009. Paper presented at Aquatic Weeds 2009 : 24/08/2009 - 28/08/2009.
Open this publication in new window or tab >>Sediment and water interactions with macrophyte element concentrations and community structure
2009 (English)Conference paper, Oral presentation only (Other academic)
Abstract [en]

Littoral interactions among sediment, water and macrophytes are poorly understood. In particular there is a gap in knowledge concerning the importance of macrophytes as sinks and sources of trace elements. Such knowledge is however central for, amongst others, explaining potential mechanisms behind the community structure of macrophytes and for the development of macrophyte-based indicator values. We studied the interactions between the three matrices (sediment, water and macrophytes) at 19 sampling sites in Storträsket, a 1.7 km2 boreal lake at the land uplift coast of Northern Sweden in summer 2008. The catchment of Storträsket was dominated  by coniferous forest of mainly the dwarf-shrub type and open wet mires. The upper sediment layers (0-6 cm) were dominated by fine detritus. Fine detritus dominated also the lower layers (>6 cm but ≤10 cm) at all but four of the studied localities where fine sediments (particle diameter <0.2 mm) dominated. Sediment and water element concentrations were related to element concentrations in the dominating macrophyte species, viz. Nuphar lutea (roots and leaves), Potamogeton natans (leaves) and Sparganium angustifolium (leaves) and to chlorophyll concentrations using uni- and multivariate statistics. We studied 27 major and trace elements. Estimations of abundance and biomass of N. lutea in eight bays was based on the evaluation of high resolution (2 cm) aerial photographs. The total biomass of N. lutea and standardized biomass (biomass per unit of area) differed significantly among bays. Also concentrations in all matrices as well as in chlorophyll showed significant spatial variation in the lake. N. lutea showed for several elements significant partitioning of elements between roots and leaves (e.g. Ca, K, Na, Fe, Pb, Zn). Correlations between element concentrations in sediment/water and in macrophytes were in general weak but significant for amongst others Si in water and leaves of P. natans and Co, Cu and Fe in water and roots of N. lutea. Interpreting correlations of elements between the sediment and macrophytes might in our study be impeded by potential incorporation of lithogenic material in extracellular macrophyte tissue. Our study identified especially N. lutea as a major sink (during vegetation period) and source (during autumn and winter) of several major and trace elements. Interactions between the matrices, chlorophyll concentrations and macrophyte community structure are further discussed as well as the implications of our results for the development of macrophyte-based indicator values.

National Category
Ecology Geochemistry
Research subject
Landscape Ecology; Applied Geology
Identifiers
urn:nbn:se:ltu:diva-38654 (URN)d19e2ca0-e985-11de-bae5-000ea68e967b (Local ID)d19e2ca0-e985-11de-bae5-000ea68e967b (Archive number)d19e2ca0-e985-11de-bae5-000ea68e967b (OAI)
Conference
Aquatic Weeds 2009 : 24/08/2009 - 28/08/2009
Note
Godkänd; 2009; Bibliografisk uppgift: Værtspublikationsredaktører: Arnold Pieterse Værtspublikationsredaktører: Anne-Mari Rytkönen Værtspublikationsredaktører: Seppo Hellsten Sider: 151; 20091215 (fawa)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved
Rentz, R. (2008). Urban impact on water bodies in the Luleå area, northern Sweden (ed.). (Licentiate dissertation). Paper presented at . Luleå: Luleå tekniska universitet
Open this publication in new window or tab >>Urban impact on water bodies in the Luleå area, northern Sweden
2008 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Anthropogenic activities change the quality of urban waters and sediments. The aim of this study was to describe and quantify pollution from different point sources in Luleå, northern Sweden. In the first article, sediment samples and porewater of an enclosed bay (Skutviken) near the centre of Luleå affected by stormwater discharge were analyzed for major and trace elements and 16 polycyclic aromatic hydrocarbons (PAHs), and compared with a reference site. Cadmium, Cu, Pb, and Zn were enriched at Skutviken. Also the PAH content was enriched, in particular for phenantrene, anthracene, fluoranthene, and pyrene, which are common constituents in stormwater. The use of trace metal ratios provided indications about pollutant sources. Pb-210 dating was used to determine historical changes in metal and PAH fixation in the sediment. The bay Skutviken is enclosed through the construction of a road bank since 1962. The enclosure caused reduced water circulation in the bay, which promotes the occurrence of anoxic conditions with sulphate reduction within the bay. As a consequence of these conditions, metals are trapped in the sediments as sulphides. This study suggests that urban pollutants are efficiently trapped in enclosed bays with restricted water circulation. Such bays are common in areas with postglacial land uplift, where enclosures may have an important impact on water and sediment qualities. The second article describes the conditions in several water bodies close to Luleå. The various catchment areas affect the water and sediment quality of neighbouring and partially connected water bodies on a local level. Point sources, such as a steel plant, stormwater and petrol filling stations were accounted for their impact on water and sediment quality. Postglacial land uplift implies continuous changes of the environment. The natural premises concede possibilities of trapping pollutants in the water bodies. However, in the long term land uplift may also imply the release of trapped pollutants if the submerged soils become oxidised when they are not water covered any more. This release of pollutants can affect living organisms, getting exposed to the contaminated soils. Human impact on the water levels, such as damming up the partially enclosed bays, can slow down the secondary release of pollutants.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2008. p. 25
Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757 ; 2008:48
National Category
Geochemistry
Research subject
Applied Geology
Identifiers
urn:nbn:se:ltu:diva-26380 (URN)e0123480-ba37-11dd-b223-000ea68e967b (Local ID)e0123480-ba37-11dd-b223-000ea68e967b (Archive number)e0123480-ba37-11dd-b223-000ea68e967b (OAI)
Note
Godkänd; 2008; 20081124 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-24Bibliographically approved
Ecke, F., Christensen, P., Rentz, R. & Hörnfeldt, B. (2007). Do landscape properties matter for densities of the grey-sided vole?: a comparison among managed and pristine forest landscapes (ed.). In: (Ed.), (Ed.), 5. European Congress of Mammology: . Paper presented at European Congress of Mammology : 21/09/2007 - 26/09/2007 (pp. 467-467). , 2
Open this publication in new window or tab >>Do landscape properties matter for densities of the grey-sided vole?: a comparison among managed and pristine forest landscapes
2007 (English)In: 5. European Congress of Mammology, 2007, Vol. 2, p. 467-467Conference paper, Meeting abstract (Other academic)
Series
Hystrix. The Italian Journal of Mammalogy ; 18
National Category
Ecology Geochemistry
Research subject
Landscape Ecology; Applied Geology
Identifiers
urn:nbn:se:ltu:diva-35344 (URN)9d99dd80-9c22-11dc-97ff-000ea68e967b (Local ID)9d99dd80-9c22-11dc-97ff-000ea68e967b (Archive number)9d99dd80-9c22-11dc-97ff-000ea68e967b (OAI)
Conference
European Congress of Mammology : 21/09/2007 - 26/09/2007
Note
Godkänd; 2007; 20071126 (fawa)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
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