Mercury cycling in freshwater systems - An updated conceptual model
12 pages, 4 figures
Saved in:
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | artículo biblioteca |
| Published: |
Elsevier
2020-11
|
| Subjects: | Dissolved organic matter, Methylmercury, Lake, Catchment, Periphyton, Organic matter, |
| Online Access: | http://hdl.handle.net/10261/223091 http://dx.doi.org/10.13039/501100011033 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
dig-icm-es-10261-223091 |
|---|---|
| record_format |
koha |
| spelling |
dig-icm-es-10261-2230912021-05-21T09:47:25Z Mercury cycling in freshwater systems - An updated conceptual model Branfireun, Brian Cosio, Claudia Poulain, Alexandre J. Riise, Gunnhild Bravo, Andrea G. Agencia Estatal de Investigación (España) Dissolved organic matter Methylmercury Lake Catchment Periphyton Organic matter 12 pages, 4 figures The widely accepted conceptual model of mercury (Hg) cycling in freshwater lakes (atmospheric deposition and runoff of inorganic Hg, methylation in bottom sediments and subsequent bioaccumulation and biomagnification in biota) is practically accepted as common knowledge. There is mounting evidence that the dominant processes that regulate inputs, transformations, and bioavailability of Hg in many lakes may be missing from this picture, and the fixation on the temperate stratified lake archetype is impeding our exploration of understudied, but potentially important sources of methylmercury to freshwater lakes. In this review, the importance of understudied biogeochemical processes and sites of methylmercury production are highlighted, including the complexity of redox transformations of Hg within the lake system itself, the complex assemblage of microbes found in biofilms and periphyton (two vastly understudied important sources of methylmercury in many freshwater ecosystems), and the critical role of autochthonous and allochthonous dissolved organic matter which mediates the net supply of methylmercury from the cellular to catchment scale. A conceptual model of lake Hg in contrasting lakes and catchments is presented, highlighting the importance of the autochthonous and allochthonous supply of dissolved organic matter, bioavailable inorganic mercury and methylmercury and providing a framework for future convergent research at the lab and field scales to establish more mechanistic process-based relationships within and among critical compartments that regulate methylmercury concentrations in freshwater ecosystems With the funding support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S), of the Spanish Research Agency (AEI) 2020-11-18T09:50:10Z 2020-11-18T09:50:10Z 2020-11 2020-11-18T09:50:10Z artículo http://purl.org/coar/resource_type/c_6501 issn: 0048-9697 e-issn: 1879-1026 Science of the Total Environment 745: 140906 (2020) CEX2019-000928-S http://hdl.handle.net/10261/223091 10.1016/j.scitotenv.2020.140906 http://dx.doi.org/10.13039/501100011033 Preprint https://doi.org/10.1016/j.scitotenv.2020.140906 Sí open Elsevier |
| institution |
ICM ES |
| collection |
DSpace |
| country |
España |
| countrycode |
ES |
| component |
Bibliográfico |
| access |
En linea |
| databasecode |
dig-icm-es |
| tag |
biblioteca |
| region |
Europa del Sur |
| libraryname |
Biblioteca del ICM España |
| topic |
Dissolved organic matter Methylmercury Lake Catchment Periphyton Organic matter Dissolved organic matter Methylmercury Lake Catchment Periphyton Organic matter |
| spellingShingle |
Dissolved organic matter Methylmercury Lake Catchment Periphyton Organic matter Dissolved organic matter Methylmercury Lake Catchment Periphyton Organic matter Branfireun, Brian Cosio, Claudia Poulain, Alexandre J. Riise, Gunnhild Bravo, Andrea G. Mercury cycling in freshwater systems - An updated conceptual model |
| description |
12 pages, 4 figures |
| author2 |
Agencia Estatal de Investigación (España) |
| author_facet |
Agencia Estatal de Investigación (España) Branfireun, Brian Cosio, Claudia Poulain, Alexandre J. Riise, Gunnhild Bravo, Andrea G. |
| format |
artículo |
| topic_facet |
Dissolved organic matter Methylmercury Lake Catchment Periphyton Organic matter |
| author |
Branfireun, Brian Cosio, Claudia Poulain, Alexandre J. Riise, Gunnhild Bravo, Andrea G. |
| author_sort |
Branfireun, Brian |
| title |
Mercury cycling in freshwater systems - An updated conceptual model |
| title_short |
Mercury cycling in freshwater systems - An updated conceptual model |
| title_full |
Mercury cycling in freshwater systems - An updated conceptual model |
| title_fullStr |
Mercury cycling in freshwater systems - An updated conceptual model |
| title_full_unstemmed |
Mercury cycling in freshwater systems - An updated conceptual model |
| title_sort |
mercury cycling in freshwater systems - an updated conceptual model |
| publisher |
Elsevier |
| publishDate |
2020-11 |
| url |
http://hdl.handle.net/10261/223091 http://dx.doi.org/10.13039/501100011033 |
| work_keys_str_mv |
AT branfireunbrian mercurycyclinginfreshwatersystemsanupdatedconceptualmodel AT cosioclaudia mercurycyclinginfreshwatersystemsanupdatedconceptualmodel AT poulainalexandrej mercurycyclinginfreshwatersystemsanupdatedconceptualmodel AT riisegunnhild mercurycyclinginfreshwatersystemsanupdatedconceptualmodel AT bravoandreag mercurycyclinginfreshwatersystemsanupdatedconceptualmodel |
| _version_ |
1777667312897228800 |