The Contribution of Photodegradation to Litter Decomposition in Semiarid Mediterranean Grasslands Depends on its Interaction with Local Humidity Conditions, Litter Quality and Position
Abstract Understanding how UV radiation interacts with prevailing climatic conditions and litter quality to determine leaf litter decomposition is fundamental for understanding soil carbon cycling pathways and ecosystem functioning in drylands. We carried out a field manipulative experiment to inves...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Almagro, María [verfasserIn] Martínez-López, Javier [verfasserIn] Maestre, Fernando T. [verfasserIn] Rey, Ana [verfasserIn] |
|---|
| Format: |
E-Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
2016 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Ecosystems - Springer-Verlag, 2000, 20(2016), 3 vom: 22. Sept., Seite 527-542 |
|---|---|
| Übergeordnetes Werk: |
volume:20 ; year:2016 ; number:3 ; day:22 ; month:09 ; pages:527-542 |
| Links: |
|---|
| DOI / URN: |
10.1007/s10021-016-0036-5 |
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SPR008085889 |
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| 520 | |a Abstract Understanding how UV radiation interacts with prevailing climatic conditions and litter quality to determine leaf litter decomposition is fundamental for understanding soil carbon cycling pathways and ecosystem functioning in drylands. We carried out a field manipulative experiment to investigate how litter quality (labile and nitrogen-rich Retama sphaerocarpa vs. recalcitrant and nitrogen-poor Stipa tenacissima), position (on the ground vs. standing) and different UV radiation levels (UV pass vs. UV block) affect litter decomposition rates at two semiarid Mediterranean steppes with contrasting climates (continental vs. maritime) in a fully factorial experimental design. As expected, Retama litter decomposed faster than that of Stipa, and litter placed on the ground decayed faster than standing litter. However, and surprisingly, contrasting effects of UV radiation on litter decomposition were observed between the two sites. At the continental site, UV radiation increased litter decay constants by 21% on average, although the contribution of photodegradation was larger when litter was placed on the ground rather than in standing litter. At the maritime site, decay constants were 15% larger in the absence of UV radiation regardless of litter position. Significant litter type × UV exposure radiation and litter type × position interactions indicate that photodegradation contributes more to litter decomposition under less favorable moisture and substrate availability conditions for microbial decomposers. Our results emphasize the need to consider interactions between moisture availability, litter quality and UV radiation in litter decomposition models to fully understand litter decomposition impacts on soil carbon cycling and storage in drylands under climate change. | ||
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10.1007/s10021-016-0036-5 doi (DE-627)SPR008085889 (SPR)s10021-016-0036-5-e DE-627 ger DE-627 rakwb eng Almagro, María verfasserin aut The Contribution of Photodegradation to Litter Decomposition in Semiarid Mediterranean Grasslands Depends on its Interaction with Local Humidity Conditions, Litter Quality and Position 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Understanding how UV radiation interacts with prevailing climatic conditions and litter quality to determine leaf litter decomposition is fundamental for understanding soil carbon cycling pathways and ecosystem functioning in drylands. We carried out a field manipulative experiment to investigate how litter quality (labile and nitrogen-rich Retama sphaerocarpa vs. recalcitrant and nitrogen-poor Stipa tenacissima), position (on the ground vs. standing) and different UV radiation levels (UV pass vs. UV block) affect litter decomposition rates at two semiarid Mediterranean steppes with contrasting climates (continental vs. maritime) in a fully factorial experimental design. As expected, Retama litter decomposed faster than that of Stipa, and litter placed on the ground decayed faster than standing litter. However, and surprisingly, contrasting effects of UV radiation on litter decomposition were observed between the two sites. At the continental site, UV radiation increased litter decay constants by 21% on average, although the contribution of photodegradation was larger when litter was placed on the ground rather than in standing litter. At the maritime site, decay constants were 15% larger in the absence of UV radiation regardless of litter position. Significant litter type × UV exposure radiation and litter type × position interactions indicate that photodegradation contributes more to litter decomposition under less favorable moisture and substrate availability conditions for microbial decomposers. Our results emphasize the need to consider interactions between moisture availability, litter quality and UV radiation in litter decomposition models to fully understand litter decomposition impacts on soil carbon cycling and storage in drylands under climate change. leaf litter decomposition (dpeaa)DE-He213 photodegradation (dpeaa)DE-He213 moisture availability (dpeaa)DE-He213 litter chemistry (dpeaa)DE-He213 drylands (dpeaa)DE-He213 Martínez-López, Javier verfasserin aut Maestre, Fernando T. verfasserin aut Rey, Ana verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 20(2016), 3 vom: 22. Sept., Seite 527-542 (DE-627)SPR008072272 nnns volume:20 year:2016 number:3 day:22 month:09 pages:527-542 https://dx.doi.org/10.1007/s10021-016-0036-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA AR 20 2016 3 22 09 527-542 |
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10.1007/s10021-016-0036-5 doi (DE-627)SPR008085889 (SPR)s10021-016-0036-5-e DE-627 ger DE-627 rakwb eng Almagro, María verfasserin aut The Contribution of Photodegradation to Litter Decomposition in Semiarid Mediterranean Grasslands Depends on its Interaction with Local Humidity Conditions, Litter Quality and Position 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Understanding how UV radiation interacts with prevailing climatic conditions and litter quality to determine leaf litter decomposition is fundamental for understanding soil carbon cycling pathways and ecosystem functioning in drylands. We carried out a field manipulative experiment to investigate how litter quality (labile and nitrogen-rich Retama sphaerocarpa vs. recalcitrant and nitrogen-poor Stipa tenacissima), position (on the ground vs. standing) and different UV radiation levels (UV pass vs. UV block) affect litter decomposition rates at two semiarid Mediterranean steppes with contrasting climates (continental vs. maritime) in a fully factorial experimental design. As expected, Retama litter decomposed faster than that of Stipa, and litter placed on the ground decayed faster than standing litter. However, and surprisingly, contrasting effects of UV radiation on litter decomposition were observed between the two sites. At the continental site, UV radiation increased litter decay constants by 21% on average, although the contribution of photodegradation was larger when litter was placed on the ground rather than in standing litter. At the maritime site, decay constants were 15% larger in the absence of UV radiation regardless of litter position. Significant litter type × UV exposure radiation and litter type × position interactions indicate that photodegradation contributes more to litter decomposition under less favorable moisture and substrate availability conditions for microbial decomposers. Our results emphasize the need to consider interactions between moisture availability, litter quality and UV radiation in litter decomposition models to fully understand litter decomposition impacts on soil carbon cycling and storage in drylands under climate change. leaf litter decomposition (dpeaa)DE-He213 photodegradation (dpeaa)DE-He213 moisture availability (dpeaa)DE-He213 litter chemistry (dpeaa)DE-He213 drylands (dpeaa)DE-He213 Martínez-López, Javier verfasserin aut Maestre, Fernando T. verfasserin aut Rey, Ana verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 20(2016), 3 vom: 22. Sept., Seite 527-542 (DE-627)SPR008072272 nnns volume:20 year:2016 number:3 day:22 month:09 pages:527-542 https://dx.doi.org/10.1007/s10021-016-0036-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA AR 20 2016 3 22 09 527-542 |
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10.1007/s10021-016-0036-5 doi (DE-627)SPR008085889 (SPR)s10021-016-0036-5-e DE-627 ger DE-627 rakwb eng Almagro, María verfasserin aut The Contribution of Photodegradation to Litter Decomposition in Semiarid Mediterranean Grasslands Depends on its Interaction with Local Humidity Conditions, Litter Quality and Position 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Understanding how UV radiation interacts with prevailing climatic conditions and litter quality to determine leaf litter decomposition is fundamental for understanding soil carbon cycling pathways and ecosystem functioning in drylands. We carried out a field manipulative experiment to investigate how litter quality (labile and nitrogen-rich Retama sphaerocarpa vs. recalcitrant and nitrogen-poor Stipa tenacissima), position (on the ground vs. standing) and different UV radiation levels (UV pass vs. UV block) affect litter decomposition rates at two semiarid Mediterranean steppes with contrasting climates (continental vs. maritime) in a fully factorial experimental design. As expected, Retama litter decomposed faster than that of Stipa, and litter placed on the ground decayed faster than standing litter. However, and surprisingly, contrasting effects of UV radiation on litter decomposition were observed between the two sites. At the continental site, UV radiation increased litter decay constants by 21% on average, although the contribution of photodegradation was larger when litter was placed on the ground rather than in standing litter. At the maritime site, decay constants were 15% larger in the absence of UV radiation regardless of litter position. Significant litter type × UV exposure radiation and litter type × position interactions indicate that photodegradation contributes more to litter decomposition under less favorable moisture and substrate availability conditions for microbial decomposers. Our results emphasize the need to consider interactions between moisture availability, litter quality and UV radiation in litter decomposition models to fully understand litter decomposition impacts on soil carbon cycling and storage in drylands under climate change. leaf litter decomposition (dpeaa)DE-He213 photodegradation (dpeaa)DE-He213 moisture availability (dpeaa)DE-He213 litter chemistry (dpeaa)DE-He213 drylands (dpeaa)DE-He213 Martínez-López, Javier verfasserin aut Maestre, Fernando T. verfasserin aut Rey, Ana verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 20(2016), 3 vom: 22. Sept., Seite 527-542 (DE-627)SPR008072272 nnns volume:20 year:2016 number:3 day:22 month:09 pages:527-542 https://dx.doi.org/10.1007/s10021-016-0036-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA AR 20 2016 3 22 09 527-542 |
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10.1007/s10021-016-0036-5 doi (DE-627)SPR008085889 (SPR)s10021-016-0036-5-e DE-627 ger DE-627 rakwb eng Almagro, María verfasserin aut The Contribution of Photodegradation to Litter Decomposition in Semiarid Mediterranean Grasslands Depends on its Interaction with Local Humidity Conditions, Litter Quality and Position 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Understanding how UV radiation interacts with prevailing climatic conditions and litter quality to determine leaf litter decomposition is fundamental for understanding soil carbon cycling pathways and ecosystem functioning in drylands. We carried out a field manipulative experiment to investigate how litter quality (labile and nitrogen-rich Retama sphaerocarpa vs. recalcitrant and nitrogen-poor Stipa tenacissima), position (on the ground vs. standing) and different UV radiation levels (UV pass vs. UV block) affect litter decomposition rates at two semiarid Mediterranean steppes with contrasting climates (continental vs. maritime) in a fully factorial experimental design. As expected, Retama litter decomposed faster than that of Stipa, and litter placed on the ground decayed faster than standing litter. However, and surprisingly, contrasting effects of UV radiation on litter decomposition were observed between the two sites. At the continental site, UV radiation increased litter decay constants by 21% on average, although the contribution of photodegradation was larger when litter was placed on the ground rather than in standing litter. At the maritime site, decay constants were 15% larger in the absence of UV radiation regardless of litter position. Significant litter type × UV exposure radiation and litter type × position interactions indicate that photodegradation contributes more to litter decomposition under less favorable moisture and substrate availability conditions for microbial decomposers. Our results emphasize the need to consider interactions between moisture availability, litter quality and UV radiation in litter decomposition models to fully understand litter decomposition impacts on soil carbon cycling and storage in drylands under climate change. leaf litter decomposition (dpeaa)DE-He213 photodegradation (dpeaa)DE-He213 moisture availability (dpeaa)DE-He213 litter chemistry (dpeaa)DE-He213 drylands (dpeaa)DE-He213 Martínez-López, Javier verfasserin aut Maestre, Fernando T. verfasserin aut Rey, Ana verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 20(2016), 3 vom: 22. Sept., Seite 527-542 (DE-627)SPR008072272 nnns volume:20 year:2016 number:3 day:22 month:09 pages:527-542 https://dx.doi.org/10.1007/s10021-016-0036-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA AR 20 2016 3 22 09 527-542 |
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10.1007/s10021-016-0036-5 doi (DE-627)SPR008085889 (SPR)s10021-016-0036-5-e DE-627 ger DE-627 rakwb eng Almagro, María verfasserin aut The Contribution of Photodegradation to Litter Decomposition in Semiarid Mediterranean Grasslands Depends on its Interaction with Local Humidity Conditions, Litter Quality and Position 2016 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Understanding how UV radiation interacts with prevailing climatic conditions and litter quality to determine leaf litter decomposition is fundamental for understanding soil carbon cycling pathways and ecosystem functioning in drylands. We carried out a field manipulative experiment to investigate how litter quality (labile and nitrogen-rich Retama sphaerocarpa vs. recalcitrant and nitrogen-poor Stipa tenacissima), position (on the ground vs. standing) and different UV radiation levels (UV pass vs. UV block) affect litter decomposition rates at two semiarid Mediterranean steppes with contrasting climates (continental vs. maritime) in a fully factorial experimental design. As expected, Retama litter decomposed faster than that of Stipa, and litter placed on the ground decayed faster than standing litter. However, and surprisingly, contrasting effects of UV radiation on litter decomposition were observed between the two sites. At the continental site, UV radiation increased litter decay constants by 21% on average, although the contribution of photodegradation was larger when litter was placed on the ground rather than in standing litter. At the maritime site, decay constants were 15% larger in the absence of UV radiation regardless of litter position. Significant litter type × UV exposure radiation and litter type × position interactions indicate that photodegradation contributes more to litter decomposition under less favorable moisture and substrate availability conditions for microbial decomposers. Our results emphasize the need to consider interactions between moisture availability, litter quality and UV radiation in litter decomposition models to fully understand litter decomposition impacts on soil carbon cycling and storage in drylands under climate change. leaf litter decomposition (dpeaa)DE-He213 photodegradation (dpeaa)DE-He213 moisture availability (dpeaa)DE-He213 litter chemistry (dpeaa)DE-He213 drylands (dpeaa)DE-He213 Martínez-López, Javier verfasserin aut Maestre, Fernando T. verfasserin aut Rey, Ana verfasserin aut Enthalten in Ecosystems Springer-Verlag, 2000 20(2016), 3 vom: 22. Sept., Seite 527-542 (DE-627)SPR008072272 nnns volume:20 year:2016 number:3 day:22 month:09 pages:527-542 https://dx.doi.org/10.1007/s10021-016-0036-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA AR 20 2016 3 22 09 527-542 |
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Almagro, María |
| doi_str_mv |
10.1007/s10021-016-0036-5 |
| author2-role |
verfasserin |
| title_sort |
contribution of photodegradation to litter decomposition in semiarid mediterranean grasslands depends on its interaction with local humidity conditions, litter quality and position |
| title_auth |
The Contribution of Photodegradation to Litter Decomposition in Semiarid Mediterranean Grasslands Depends on its Interaction with Local Humidity Conditions, Litter Quality and Position |
| abstract |
Abstract Understanding how UV radiation interacts with prevailing climatic conditions and litter quality to determine leaf litter decomposition is fundamental for understanding soil carbon cycling pathways and ecosystem functioning in drylands. We carried out a field manipulative experiment to investigate how litter quality (labile and nitrogen-rich Retama sphaerocarpa vs. recalcitrant and nitrogen-poor Stipa tenacissima), position (on the ground vs. standing) and different UV radiation levels (UV pass vs. UV block) affect litter decomposition rates at two semiarid Mediterranean steppes with contrasting climates (continental vs. maritime) in a fully factorial experimental design. As expected, Retama litter decomposed faster than that of Stipa, and litter placed on the ground decayed faster than standing litter. However, and surprisingly, contrasting effects of UV radiation on litter decomposition were observed between the two sites. At the continental site, UV radiation increased litter decay constants by 21% on average, although the contribution of photodegradation was larger when litter was placed on the ground rather than in standing litter. At the maritime site, decay constants were 15% larger in the absence of UV radiation regardless of litter position. Significant litter type × UV exposure radiation and litter type × position interactions indicate that photodegradation contributes more to litter decomposition under less favorable moisture and substrate availability conditions for microbial decomposers. Our results emphasize the need to consider interactions between moisture availability, litter quality and UV radiation in litter decomposition models to fully understand litter decomposition impacts on soil carbon cycling and storage in drylands under climate change. |
| abstractGer |
Abstract Understanding how UV radiation interacts with prevailing climatic conditions and litter quality to determine leaf litter decomposition is fundamental for understanding soil carbon cycling pathways and ecosystem functioning in drylands. We carried out a field manipulative experiment to investigate how litter quality (labile and nitrogen-rich Retama sphaerocarpa vs. recalcitrant and nitrogen-poor Stipa tenacissima), position (on the ground vs. standing) and different UV radiation levels (UV pass vs. UV block) affect litter decomposition rates at two semiarid Mediterranean steppes with contrasting climates (continental vs. maritime) in a fully factorial experimental design. As expected, Retama litter decomposed faster than that of Stipa, and litter placed on the ground decayed faster than standing litter. However, and surprisingly, contrasting effects of UV radiation on litter decomposition were observed between the two sites. At the continental site, UV radiation increased litter decay constants by 21% on average, although the contribution of photodegradation was larger when litter was placed on the ground rather than in standing litter. At the maritime site, decay constants were 15% larger in the absence of UV radiation regardless of litter position. Significant litter type × UV exposure radiation and litter type × position interactions indicate that photodegradation contributes more to litter decomposition under less favorable moisture and substrate availability conditions for microbial decomposers. Our results emphasize the need to consider interactions between moisture availability, litter quality and UV radiation in litter decomposition models to fully understand litter decomposition impacts on soil carbon cycling and storage in drylands under climate change. |
| abstract_unstemmed |
Abstract Understanding how UV radiation interacts with prevailing climatic conditions and litter quality to determine leaf litter decomposition is fundamental for understanding soil carbon cycling pathways and ecosystem functioning in drylands. We carried out a field manipulative experiment to investigate how litter quality (labile and nitrogen-rich Retama sphaerocarpa vs. recalcitrant and nitrogen-poor Stipa tenacissima), position (on the ground vs. standing) and different UV radiation levels (UV pass vs. UV block) affect litter decomposition rates at two semiarid Mediterranean steppes with contrasting climates (continental vs. maritime) in a fully factorial experimental design. As expected, Retama litter decomposed faster than that of Stipa, and litter placed on the ground decayed faster than standing litter. However, and surprisingly, contrasting effects of UV radiation on litter decomposition were observed between the two sites. At the continental site, UV radiation increased litter decay constants by 21% on average, although the contribution of photodegradation was larger when litter was placed on the ground rather than in standing litter. At the maritime site, decay constants were 15% larger in the absence of UV radiation regardless of litter position. Significant litter type × UV exposure radiation and litter type × position interactions indicate that photodegradation contributes more to litter decomposition under less favorable moisture and substrate availability conditions for microbial decomposers. Our results emphasize the need to consider interactions between moisture availability, litter quality and UV radiation in litter decomposition models to fully understand litter decomposition impacts on soil carbon cycling and storage in drylands under climate change. |
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| container_issue |
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| title_short |
The Contribution of Photodegradation to Litter Decomposition in Semiarid Mediterranean Grasslands Depends on its Interaction with Local Humidity Conditions, Litter Quality and Position |
| url |
https://dx.doi.org/10.1007/s10021-016-0036-5 |
| remote_bool |
true |
| author2 |
Martínez-López, Javier Maestre, Fernando T. Rey, Ana |
| author2Str |
Martínez-López, Javier Maestre, Fernando T. Rey, Ana |
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false |
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| doi_str |
10.1007/s10021-016-0036-5 |
| up_date |
2024-07-03T17:13:11.305Z |
| _version_ |
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7.400058 |