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An Invasive Succulent Plant (Kalanchoe daigremontiana) Influences Soil Carbon and Nitrogen Mineralization in a Neotropical Semiarid Zone

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Název: An Invasive Succulent Plant (Kalanchoe daigremontiana) Influences Soil Carbon and Nitrogen Mineralization in a Neotropical Semiarid Zone
Autoři: HERRERA, I, FERRER-PARIS, JR, BENZO, D, FLORES, S, GARCÍA, B, NASSAR, JM
Zdroj: Pedosphere. 28:632-643
Informace o vydavateli: Elsevier BV, 2018.
Rok vydání: 2018
Témata: 0106 biological sciences, anzsrc-for: 0503 Soil Sciences, anzsrc-for: 3004 Crop and pasture production, anzsrc-for: 0703 Crop and Pasture Production, 15 Life on Land, anzsrc-for: 4106 Soil sciences, Veterinary and Food Sciences, 3007 Forestry Sciences, 04 agricultural and veterinary sciences, 41 Environmental Sciences, anzsrc-for: 3007 Forestry Sciences, 15. Life on land, 30 Agricultural, 01 natural sciences, anzsrc-for: 41 Environmental Sciences, anzsrc-for: 0607 Plant Biology, anzsrc-for: 30 Agricultural, 0401 agriculture, forestry, and fisheries
Popis: It has long been recognized that plant invasions may alter carbon (C) and nitrogen (N) cycles, but the direction and magnitude of such alterations have been rarely quantified. In this study, we quantified the effects caused by the invasion of a noxious exotic plant, Kalanchoe daigremontiana (Crassulaceae), on C and N mineralization and enzymatic and microbial activities in the soil of a semiarid locality in Venezuela. We compared soil parameters associated with these processes (C and N mineralization time and the cumulative values, fluorescein diacetate hydrolytic activity, and activities of dehydrogenase, β-glucosidase, glucosaminidase, and urease) between invaded and adjacent non-invaded sites. In addition, correlations among these parameters and the soil physical-chemical properties were also examined to determine if a positive feedback exists between nutrient availability and K. daigremontiana invasion. Overall, our results showed that C mineralization and transformation of organic compounds to NH4+ were favored at sites colonized by K. daigremontiana. With this species, we found the highest cumulative amounts of NH4+-N and C and the lowest mineralization time. These results could be explained by higher activities of urease and glucosaminidase in soils under the influence of K. daigremontiana. In addition, higher amounts of organic matter and moisture content in invaded soils might favor C and N mineralization. In conclusion, invasion of Neotropical semiarid zones by K. daigremontiana may influence the chemical and biological properties of the soils covered by this species, increasing nutrient bioavailability, which, in time, can facilitate the invasion process.
Druh dokumentu: Article
Popis souboru: application/pdf
Jazyk: English
ISSN: 1002-0160
DOI: 10.1016/s1002-0160(18)60029-3
Přístupová URL adresa: https://www.sciencedirect.com/science/article/pii/S1002016018600293
Rights: Elsevier TDM
CC BY NC ND
Přístupové číslo: edsair.doi.dedup.....a4db431939fe522de9f9a5a39dc0b7f4
Databáze: OpenAIRE
Popis
Abstrakt:It has long been recognized that plant invasions may alter carbon (C) and nitrogen (N) cycles, but the direction and magnitude of such alterations have been rarely quantified. In this study, we quantified the effects caused by the invasion of a noxious exotic plant, Kalanchoe daigremontiana (Crassulaceae), on C and N mineralization and enzymatic and microbial activities in the soil of a semiarid locality in Venezuela. We compared soil parameters associated with these processes (C and N mineralization time and the cumulative values, fluorescein diacetate hydrolytic activity, and activities of dehydrogenase, β-glucosidase, glucosaminidase, and urease) between invaded and adjacent non-invaded sites. In addition, correlations among these parameters and the soil physical-chemical properties were also examined to determine if a positive feedback exists between nutrient availability and K. daigremontiana invasion. Overall, our results showed that C mineralization and transformation of organic compounds to NH4+ were favored at sites colonized by K. daigremontiana. With this species, we found the highest cumulative amounts of NH4+-N and C and the lowest mineralization time. These results could be explained by higher activities of urease and glucosaminidase in soils under the influence of K. daigremontiana. In addition, higher amounts of organic matter and moisture content in invaded soils might favor C and N mineralization. In conclusion, invasion of Neotropical semiarid zones by K. daigremontiana may influence the chemical and biological properties of the soils covered by this species, increasing nutrient bioavailability, which, in time, can facilitate the invasion process.
ISSN:10020160
DOI:10.1016/s1002-0160(18)60029-3