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Short Name fmars.2021.681901 Description The assessment of historical data is important to understand long-term changes in the marine environment. Whereas time series analyses based on monitoring data typically span one or two decades, this work aimed to integrate 40 years of monitoring and research data on polychlorinated biphenyls (PCBs) and metals in the Belgian Part of the North Sea (BPNS). Multiple challenges were encountered: sampling locations changed over time, different analytical methods were applied, different grain size fractions were analyzed, appropriate co-factors were not always analyzed, and measurement uncertainties were not always indicated. These issues hampered the use of readily available, highly standardized trend modeling approaches like those proposed by regional sea conventions such as OSPAR, named after the Oslo and Paris conventions.Therefore, we applied alternative approaches, allowing us to include most older historical data that have been obtained during the nineteen seventies and eighties. Our approach included reproducible and quality controlled procedures from data collection up to data assessment. It included spatial clustering, data normalization and parametric linear mixed effect modeling. A Ward hierarchical clustering was applied on recently obtained contaminant data, as the basis for a spatial division of the BPNS into five distinct areas with different contamination profiles. To minimize the risk of normalization errors for the metal data analyses, four normalization approaches were applied and mutually compared: granulometric and nickel (Ni) normalization, next to two hybrid normalization methods combining aluminum (Al) and iron (Fe) normalization. The long-term models revealed decreasing trends for most metals, except zinc (Zn) for which three out of four models showed increasing concentrations in all five zones of the BPNS. Offshore sediments contained the lowest normalized mercury (Hg) and cadmium (Cd) concentrations but high arsenic (As) concentrations. Trend analysis revealed a strong decrease in PCB concen... Authorsp Hong Minh Le, Karen Bekaert, Ruth Lagring, Bart Ampe, Ann Ruttens, Karien De Cauwer, Kris Hostens, Bavo De Witte Title| 4DEMON: Integrating 40 Years of Data on PCB and Metal Contamination in Marine Sediments of the Belgian Part of the North Sea Publication Year 2021 Abstract
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Online URLJ https://www.frontiersin.org/articles/10.3389/fmars.2021.681901/full#refer1 PDF URL\ http://library.naturalsciences.be/pdfs-open-access/2021/fmars-08-681901.pdf/at_download/file+ AT Reference to Printable File (PDF Format) Printable PDF File Is_duplicate_of Journal Frontiers in Marine Science Volume 8 Number Pages PubMed ID DOI Identifiers3 DOI 10.3389/fmars.2021.681901 , ISSN 2296-7745 KeywordsR sediment contamination, normalization, long-term trend analysis, PCB, metals, BPNS Publication Month Note Annote Additional Fields Tags! RBINS Publication(s), Peer Review
Related Items Organigram, BEDIC, BMDC, Research Theme 4: Past interactions between humans and nature, Research Theme 5: Blue growth and marine management, RBINS/OD Database(s) Location Belgian Part of the North Sea Language en Publishing Date
2022/01/31 Expiration Date
Creation Date Modification Date
2022/03/30 Creators hmle Contributors Rights 1380b4e618b947aabe9ddd5ad301cdeeD a R W I N ( D a t a R e s e a r c h W a r e h o u s e I n f o r m a t i o n N e t w o r k ) i s a n i n - h o u s e s o l u t i o n d e v e l o p e d b y t h e R o y a l B e l g i a n I n s t i t u t e o f N a t u r a l S c i e n c e s ( R B I N S ) , a s a N a t u r a l H i s t o r y c o l l e c t i o n s m a n a g e m e n t s y s t e m f o r b i o l o g i c a l a n d g e o l o g i c a l s a m p l e s i n c o l l e c t i o n s . I n 2 0 1 4 , t h e R o y a l M u s e u m f o r C e n t r a l A f r i c a ( R M C A ) a d o p t e d t h i s s y s t e m f o r i t s c o l l e c t i o n s a n d s t a r t e d t o t a k e p a r t i n n e w d e v e l o p m e n t s . T h e D a R W I N d a t a b a s e c u r r e n t l y m a n a g e s i n f o r m a t i o n o n m o r e t h a n 6 0 0 , 0 0 0 r e c o r d s ( a b o u t 4 m i l l i o n s p e c i m e n s ) h o u s e d a t t h e R B I N S a n d m o r e t h a n 6 5 0 , 0 0 0 r e c o r d s ( m o r e t h a n 1 m i l l i o n s p e c i m e n s ) a t t h e R M C A . D a R W I N i s a n o p e n s o u r c e s y s t e m , c o n s i s t i n g o f a P o s t g r e S Q L d a t a b a s e a n d a c u s t o m i z a b l e w e b - i n t e r f a c e b a s e d o n t h e S y m f o n y f r a m e w o r k ( h t t p s : / / s y m f o n y . c o m ) . D a R W I N i s d i v i d e d i n t o 2 p a r t s : o n e p u b l i c s e c t i o n t h a t g i v e s a r e a d - o n l y a c c e s s t o d i g i t i s e d s p e c i m e n s , o n e s e c t i o n f o r r e g i s t e r e d u s e r s , w i t h d i f f e r e n t l e v e l s o f a c c e s s r i g h t s ( u s e r , e n c o d e r , c o n s e r v a t o r a n d a d m i n i s t r a t o r ) , c u s t o m i z a b l e f o r e a c h c o l l e c t i o n a n d a l l o w i n g u p d a t e o f s p e c i m e n s a n d c o l l e c t i o n s , d a i l y m a n a g e m e n t o f c o l l e c t i o n s , a n d t h e p o t e n t i a l f o r d e a l i n g w i t h s e n s i t i v e i n f o r m a t i o n . D a R W I N s t o r e s s a m p l e d a t a a n d r e l a t e d i n f o r m a t i o n s u c h a s p l a c e a n d d a t e o f c o l l e c t i o n , m i s s i o n s a n d c o l l e c t o r s , i d e n t i f i e r s , t e c h n i c i a n s i n v o l v e d , t a x o n o m y , i d e n t i f i c a t i o n i n f o r m a t i o n ( t y p e , s t a g e , s t a t e , e t c . ) , b i b l i o g r a p h y , r e l a t e d f i l e s , s t o r a g e , e t c . O t h e r f e a t u r e s t h a t d e a l w i t h d a y - t o - d a y c u r a t i o n o p e r a t i o n s a r e a v a i l a b l e : l o a n s , p r i n t i n g o f l a b e l s f o r s t o r a g e , s t a t i s t i c s a n d r e p o r t i n g . D a R W I N f e a t u r e s i t s o w n J S O N ( J a v a S c r i p t O b j e c t N o t a t i o n ) w e b s e r v i c e f o r s p e c i m e n s a n d s c i e n t i f i c n a m e s a n d c a n e x p o r t d a t a i n t a b - d e l i m i t e d , E x c e l , P D F a n d G e o J S O N f o r m a t s . M o r e r e c e n t l y , a p r o c e d u r e f o r i m p o r t i n g b a t c h e s o f d a t a h a s b e e n d e v e l o p e d , b a s e d o n t a b - d e l i m i t e d f i l e s , m a k i n g i n t e g r a t i o n o f d a t a f r o m ( o l d / h i s t o r i c a l ) d a t a b a s e s f a s t e r a n d m o r e c o n t r o l l e d . A d d i t i o n a l i m p r o v e m e n t s o f $ ~ $ t h e $ ~ $ u s e r i n t e r f a c e a n d d a t a b a s e m o d e l h a v e b e e n m a d e . F o r e x a m p l e , p a r a l l e l . . . y Marielle Adam, Franck Theeten, Jean-Marc Herpers, Thomas Vandenberghe, Patrick Semal, Didier Spiegel, Paul-Andr DuchesneI DaRWIN: An open source natural history collections data management system 2019' https://biss.pensoft.net/article/39054/4 https://biss.pensoft.net/article/39054/download/pdf/. Biodiversity Information Science and Standards 3F Peer Review, Open Access, Abstract of an Oral Presentation or a Postera Scientific <