| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | mtc-m16b.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 6qtX3pFwXQZ3r59YD9/GvTdV |
| Repository | sid.inpe.br/iris@1915/2005/06.20.13.20 (restricted access) |
| Last Update | 2005:06.20.03.00.00 (UTC) administrator |
| Metadata Repository | sid.inpe.br/iris@1915/2005/06.20.13.20.12 |
| Metadata Last Update | 2018:06.05.03.52.15 (UTC) administrator |
| Secondary Key | INPE-12784-PRE/8074 |
| ISSN | 0049-6979 |
| Citation Key | FortiBoulMelfNeal:2000:CoNaDe |
| Title | Hydrogeochemistry of a small catchment in Northeastern Amazonia: A comparison between natural with deforested parts of the catchment (Serra do Navio, Amapa State, Brazil)  |
| Year | 2000 |
| Secondary Date | 20050620 |
| Month | Mar. |
| Access Date | 2024, Apr. 28 |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 289 KiB |
| 2. Context | |
| Author | 1 Forti, Maria Cristina 2 Boulett, R 3 Melfi, A. J. 4 Neal, C. |
| Resume Identifier | 1 8JMKD3MGP5W/3C9JHR6 |
| Group | 1 CPT-INPE-MCT-BR |
| Affiliation | 1 CPTEC-INPE-Sao Jose dos Campos-12227-010-SP-Brasil |
| e-Mail Address | atus@cptec.inpe.br |
| Journal | Water, Air, and Soil Pollution |
| Volume | 118 |
| Number | 3-4 |
| Pages | 263-279 |
| History (UTC) | 2005-06-27 11:34:36 :: fabia -> administrator :: 2008-06-10 19:47:43 :: administrator -> estagiario :: 2010-05-11 16:56:04 :: estagiario -> marciana :: 2010-07-06 18:30:20 :: marciana -> administrator :: 2012-07-18 02:37:09 :: administrator -> banon :: 2000 2012-09-28 16:37:52 :: banon -> administrator :: 2000 2018-06-05 03:52:15 :: administrator -> marciana :: 2000 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Keywords | Amazonia deforestation hydrochemistry rainforest water quality throughfall chemistry |
| Abstract | To undertake a comprehensive study of the disturbance effects due to mining activities (manganese ore exploitation) on the chemical composition of drainage waters, a 164 ha catchment in North-eastern Amazonia tropical forest was sampled weekly for a year period (June 1993 to June 1994) to determine the contrasts in rainwater, throughfall and stream water chemistry between the upper undisturbed area and the lower part affected by deforestation and mining works. During the 3 dry months season only about 15% of the total annual input-output of chemical species to and from the catchment occurs. In the three wettest months, about 30% of the flux occurs, except 60% of the potassium and nitrate release from the catchment occurs in these three months. The rain waters are slightly acidic (pH approximate to 5.2) with low alkalinity, while the stream water is nearly neutral (pH approximate to 6.9): alkalinity is generated within the soil and soil water system. The rainfall-throughfall relationship of the chemical species in the natural areas exhibits strong internal recycling and little export from the catchment. In the area changed by deforestation and mining works almost all chemical species show a net export in surface waters: these are mainly derived from the deforested area of the basin, where most probably due to enhanced weathering processes because the vegetation cover has to re-establish itself. |
| Area | MET |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > CGCPT > Hydrogeochemistry of a... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| Language | en |
| Target File | Forti_Hydrogeochemistry of a small catchment.pdf.pdf |
| User Group | administrator banon fabia marciana |
| Visibility | shown |
| Copy Holder | SID/SCD |
| Archiving Policy | denypublisher denyfinaldraft12 |
| Read Permission | deny from all and allow from 150.163 |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3EUPEJL |
| Dissemination | WEBSCI; PORTALCAPES. |
| Host Collection | cptec.inpe.br/walmeida/2003/04.25.17.12 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyright creatorhistory descriptionlevel documentstage doi electronicmailaddress format isbn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup rightsholder schedulinginformation secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url versiontype |
| 7. Description control | |
| e-Mail (login) | marciana |
| update | |