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Effects of heavy metals and mineral nutrients on forest litter respiration rate
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Effects of heavy metals and mineral nutrients on forest litter respiration rate
Bibliographic description
| title: | Effects of heavy metals and mineral nutrients on forest litter respiration rate |
| author: | Laskowski Ryszard  , Maryański Maciej , Niklińska Maria
|
| journal title: | Environmental Pollution |
| volume: | 84 |
| issue: | 1 |
| date of publication : | 1994 |
| pages: | 97-102 |
| ISSN: |
0269-7491 |
| eISSN: |
1873-6424 |
| DOI: | |
| language: | English |
| journal language: | English |
| abstract in English: | Two hypotheses were tested: (1) heavy metals such as Zn, Pb and Cd can suppress the respiration rate of forest litter at low-moderate pollution levels, and (2) mineral nutrients such as K, Ca and Mg can counteract the toxicity of heavy metals when applied onto the polluted litter. In a completely randomised design, three doses of heavy metals were used: Cd-10, 50, 250; Pb-100, 500, 2500; Zn-200, 1000, 5000 mu g/g dwt litter, respectively. For Ca, Mg and K, the doses corresponded to 100, 500 and 2500 mu g/g. A significant decrease in cumulated CO, evolution after 4 weeks of incubation was found for the litter samples treated with medium doses of Zn, Cd/Ca, Cd/Mg, Pb/Ca, Pb/Mg, Pb/K, Zn/Mg, Zn/Ca, Zn/K and for all the highest-dose treatments. The largest drop in respiration rate in both the medium and the highest doses was caused by additions of zn either alone or in combination with K, Ca or Mg. The additions of mineral nutrients were found to decrease the litter respiration rate below the value measured for the respective heavy metal alone in the case of Cd/Ca, Cd/Mg, Pb/Ca, Pb/Mg and Pb/K in the medium-dose treatments, and for Cd/Ca, Cd/Mg Cd/K, Pb/Ca and Pb/Mg in the highest-dose treatments. In all other cases, additions of the mineral nutrients did not influence the respiration rate significantly when compared to the effect of the respective heavy metal. |
| affiliation: | Wydział Biologii i Nauk o Ziemi : Instytut Nauk o Środowisku |
| type: | journal article |
| subtype: | academic paper |
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Projekt „Repozytorium otwartego dostępu do dorobku naukowego i dydaktycznego UJ” współfinansowany w ramach poddziałania 2.3.1 „Cyfrowe udostępnianie zasobów nauki” Programu Operacyjnego Polska Cyfrowa z Europejskiego Funduszu Rozwoju Regionalnego i budżetu państwa na podstawie umowy o dofinansowanie nr POPC.02.03.01-00-0030/17-00
