{"id":2094,"date":"2020-04-12T15:49:52","date_gmt":"2020-04-12T15:49:52","guid":{"rendered":"http:\/\/www.icterra.pt\/?p=2094"},"modified":"2020-04-12T15:49:52","modified_gmt":"2020-04-12T15:49:52","slug":"photosynthetic-pigments-in-acid-mine-drainage-seasonal-patterns-and-associations-with-stressful-abiotic-characteristics","status":"publish","type":"post","link":"https:\/\/www.icterra.pt\/legacy\/index.php\/2020\/04\/12\/photosynthetic-pigments-in-acid-mine-drainage-seasonal-patterns-and-associations-with-stressful-abiotic-characteristics\/","title":{"rendered":"Photosynthetic pigments in acid mine drainage: Seasonal patterns and associations with stressful abiotic characteristics"},"content":{"rendered":"

Patr\u00edcia <\/span>Gomes,\u00a0<\/span><\/span>Teresa <\/span>Valente<\/span>,<\/span><\/span> Dulce <\/span>Geraldo,\u00a0<\/span><\/span><\/span>Catarina <\/span>Ribeiro<\/span><\/span><\/span><\/span><\/p>\n

\n

Photosynthetic pigments in acid mine drainage: Seasonal patterns and associations with stressful abiotic characteristics<\/strong><\/span><\/p>\n

Acid mine drainage represents an extreme type of water pollution. The environments develop especial hydrochemical and ecological characteristics, such as high concentrations of acidity and low biodiversity, with dominance of acidophilic organisms.<\/span><\/p>\n

Ecological criteria are assuming increasing relevance for assessing water quality, including in acid mine drainage-affected systems. Photosynthetic pigments, like chlorophyll, could be considered in this context as they are generally used to estimate phytoplankton biomass.<\/span><\/p>\n

The present work was focused on acid mine drainage and their relationships with chlorophyll a.<\/em> It was developed in the historic mine of S\u00e3o Domingos (Iberian Pyrite Belt, SW Europe). The methodological approach comprised two sampling campaigns (October and February) to represent seasonal behaviour. The diversity of hydrological conditions was also considered through sampling sites established in the pit lake, acidic lagoons and affected stream. Hydrochemistry and chlorophyll a<\/em> were analysed. The obtained results revealed very low pH values, with a minimum of 2.1. In general, hydrochemistry indicates higher concentrations of pollutants in summer. One of the sampling point, located in an acidic lagoon, stood out by highest concentrations, presenting maximum of sulfate (6564\u202fmg\/L), As (6.26\u202fmg\/L), and metals like Al (675\u202fmg\/L), Cd (1,30\u202fmg\/L), Zn (199\u202fmg\/L). These highest concentrations coincided with the maximum concentration of chlorophyll a<\/em> (113\u202f\u03bcg\/L). The results suggested that the more contaminated the environment, more chlorophyll a<\/em> was produced. Factor analyses emphasised the relationships between acid drainage properties and the photosynthetic activity, indicating a strong pH dependency of chlorophyll a<\/em> production.<\/span><\/p>\n

Read the full article here<\/a>.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Patr\u00edcia Gomes,\u00a0Teresa Valente, Dulce Geraldo,\u00a0Catarina Ribeiro Photosynthetic pigments in acid mine drainage: Seasonal patterns and associations with stressful abiotic characteristics Acid mine drainage represents an extreme type of water pollution. The environments develop especial hydrochemical and ecological characteristics, such as high concentrations of acidity and low biodiversity, with dominance of acidophilic organisms. Ecological criteria are […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[301,300,303,302,299],"_links":{"self":[{"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/posts\/2094"}],"collection":[{"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/comments?post=2094"}],"version-history":[{"count":1,"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/posts\/2094\/revisions"}],"predecessor-version":[{"id":2095,"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/posts\/2094\/revisions\/2095"}],"wp:attachment":[{"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/media?parent=2094"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/categories?post=2094"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.icterra.pt\/legacy\/index.php\/wp-json\/wp\/v2\/tags?post=2094"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}