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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
14/09/2001 |
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Data da última atualização: |
14/09/2001 |
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Autoria: |
WARDLE, D. A.; GHANI, A. |
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Título: |
A critique of the microbial metabolic quatient (qCO2) as a bioindicator of disturbance and ecosystem development. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
Soil Biology and Biochemistry, Oxford, v. 27,n. 12, p. 1601-1610, 1995. |
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Idioma: |
Inglês |
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Conteúdo: |
The microbial metabolic quotient (respiration-to-biomass ratio) or qCO2, conceptually based on Odum`s theory of ecosystem sucession, is increasingly being used as an index of ecosystem development (during which it supposedly declines) and disturbance (due to which it supposedly increases). We investigated the suitability of qCO2 as an bioindicator using: (1) data from the Franz Josef Glacier chronosequence, spanning over 22,000 years; and (2) data recalculated from published studies. In the Franz Josef sequence, a detectable decline in qCO2 occurred in the first 250 years in both the L-layer and mineral soil layer. However, in the later phases of the succession there was a sharp increase in qCO2 indicating reduced microbial efficiency, which appeared to be related to stress (independent of disturbance) resulting from steady-state conditions. Calculation of qCO2 from three previous studies on disturbance and ecosystem development indicated that this index responds unpredictably and does not necessarily decline during succession. Plant litter decomposition studies demonstrate that while qCO2 usually declines initially, a significant increase in qCO2 can eventually follow on litter types resistant to decomposition. Correlation analysis of each of 24 previous studies demostrated that qCO2 often declines with increasing pH, clay content and amounts of microbial biomass; these three soil properties are all indicative of varying stress rather than disturbance levels. Reanalysis of data from 16 previous studies indicated that some disturbances such as fertilization and liming can either increase of decrease qCO2 values depending on whether the disturbance alleviates stress (reducing qCO2) or is more extreme than the stress it alleviates (enhancing qCO2). Although cultivation represents a severe disturbance q CO2 is not predictably enhanced by this pertubation. While q CO2 undoubtedly provides a useful measure of microbial efficiency, our data suggests it has limitations it can be insensitive to disturbance and ecosystem development, fails to distinguish between effects of disturbance and stress, and does not decline predictably in response to ecosystem development whenever stress increases along successional gradients. MenosThe microbial metabolic quotient (respiration-to-biomass ratio) or qCO2, conceptually based on Odum`s theory of ecosystem sucession, is increasingly being used as an index of ecosystem development (during which it supposedly declines) and disturbance (due to which it supposedly increases). We investigated the suitability of qCO2 as an bioindicator using: (1) data from the Franz Josef Glacier chronosequence, spanning over 22,000 years; and (2) data recalculated from published studies. In the Franz Josef sequence, a detectable decline in qCO2 occurred in the first 250 years in both the L-layer and mineral soil layer. However, in the later phases of the succession there was a sharp increase in qCO2 indicating reduced microbial efficiency, which appeared to be related to stress (independent of disturbance) resulting from steady-state conditions. Calculation of qCO2 from three previous studies on disturbance and ecosystem development indicated that this index responds unpredictably and does not necessarily decline during succession. Plant litter decomposition studies demonstrate that while qCO2 usually declines initially, a significant increase in qCO2 can eventually follow on litter types resistant to decomposition. Correlation analysis of each of 24 previous studies demostrated that qCO2 often declines with increasing pH, clay content and amounts of microbial biomass; these three soil properties are all indicative of varying stress rather than disturbance levels. Reanalysis of... Mostrar Tudo |
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Palavras-Chave: |
Ecosystem; Relacao; Respiração/Biomassa; Respiration/Biomass Ratio. |
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Thesagro: |
Ecossistema. |
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Categoria do assunto: |
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Marc: |
LEADER 02843naa a2200193 a 4500
001 1621250
005 2001-09-14
008 1995 bl --- 0-- u #d
100 1 $aWARDLE, D. A.
245 $aA critique of the microbial metabolic quatient (qCO2) as a bioindicator of disturbance and ecosystem development.
260 $c1995
520 $aThe microbial metabolic quotient (respiration-to-biomass ratio) or qCO2, conceptually based on Odum`s theory of ecosystem sucession, is increasingly being used as an index of ecosystem development (during which it supposedly declines) and disturbance (due to which it supposedly increases). We investigated the suitability of qCO2 as an bioindicator using: (1) data from the Franz Josef Glacier chronosequence, spanning over 22,000 years; and (2) data recalculated from published studies. In the Franz Josef sequence, a detectable decline in qCO2 occurred in the first 250 years in both the L-layer and mineral soil layer. However, in the later phases of the succession there was a sharp increase in qCO2 indicating reduced microbial efficiency, which appeared to be related to stress (independent of disturbance) resulting from steady-state conditions. Calculation of qCO2 from three previous studies on disturbance and ecosystem development indicated that this index responds unpredictably and does not necessarily decline during succession. Plant litter decomposition studies demonstrate that while qCO2 usually declines initially, a significant increase in qCO2 can eventually follow on litter types resistant to decomposition. Correlation analysis of each of 24 previous studies demostrated that qCO2 often declines with increasing pH, clay content and amounts of microbial biomass; these three soil properties are all indicative of varying stress rather than disturbance levels. Reanalysis of data from 16 previous studies indicated that some disturbances such as fertilization and liming can either increase of decrease qCO2 values depending on whether the disturbance alleviates stress (reducing qCO2) or is more extreme than the stress it alleviates (enhancing qCO2). Although cultivation represents a severe disturbance q CO2 is not predictably enhanced by this pertubation. While q CO2 undoubtedly provides a useful measure of microbial efficiency, our data suggests it has limitations it can be insensitive to disturbance and ecosystem development, fails to distinguish between effects of disturbance and stress, and does not decline predictably in response to ecosystem development whenever stress increases along successional gradients.
650 $aEcossistema
653 $aEcosystem
653 $aRelacao
653 $aRespiração/Biomassa
653 $aRespiration/Biomass Ratio
700 1 $aGHANI, A.
773 $tSoil Biology and Biochemistry, Oxford$gv. 27,n. 12, p. 1601-1610, 1995.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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| Registros recuperados : 6 | |
| 2. |  | WARDLE, D. A.; BROWN, V. K.; BEHAN-PELLETIER, V.; ST. JOHN, M.; WOJTOWICZ, T.; BARDGETT, R. D.; BROWN, G. G.; INESON, P.; LAVELLE, P.; PUTTEN, W. H. van der; ANDERSON, J. M.; BRUSSAARD, L.; HUNT, H. W.; PAUL, E. A.; WALL, D. H. Vulnerability to global change of ecosystem goods and services driven by soil biota. In: WALL, D. H. (Ed.). Sustaining biodiversity and ecosystem services in soil and sediments. Washington: Island Press, 2004. p. 101-135. (SCOPE, 64).| Biblioteca(s): Embrapa Soja. |
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| 3. | | PUTTEN, W. H. van der; ANDERSON, J. M.; BARDGETT, R. D.; BEHAN-PELLETIER, V.; BIGNELL, D. E.; BROWN, G. G.; BROWN, V. K.; BRUSSAARD, L.; HUNT, H. W.; INESON, P.; JONES, T. H.; LAVELLE, P.; PAUL, E. A.; ST. JOHN, M.; WARDLE, D. A.; WOJTOWICZ, T.; WALL, D. H. The sustainable delivery of goods and services provided by soil biota. In: WALL, D. H. (Ed.). Sustaining biodiversity and ecosystem services in soil and sediments. Washington: Island Press, 2004. p. 15-43. (SCOPE, 64).| Biblioteca(s): Embrapa Soja. |
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| 4. | | THAKUR, M. P.; PHILLIPS, H. R. P.; BROSE, U.; VRIES, F. T. de; LAVELLE, P.; LOREAU, M.; MATHIEU, J.; MULDER, C.; PUTTEN, W. H. V. D.; RILLIG, M. C.; WARDLE, D. A.; BACH, E. M.; BARTZ, M. L. C.; BENNETT, J. M.; BRIONES, M. J. I.; BROWN, G. G.; DECAENS, T.; EISENHAUER, N.; FERLIAN, O.; GUERRA, C. A.; KONIG-RIES, B.; ORGIAZZI, A.; RAMIREZ, K. S.; RUSSELL, D. J.; RUTGERS, M.; WALL, D. H.; CAMERON, E. K. Towards an integrative understanding of soil biodiversity. Biological Reviews, v. 9, n. 2, p. 350-364, Apr. 2020.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Florestas. |
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| 5. | | PHILLIPS, H. R. P.; BACH, E. M.; BARTZ, M. L. C.; BENNETT, J. M.; BEUGNON, R.; BRIONES, M. J. I.; BROWN, G. G.; FERLIAN, O.; GONGALSKY, K. B.; GUERRA, C. A.; KÖNIG-RIES, B.; KREBS, J. J.; ORGIAZZI, A.; RAMIREZ, K. S.; RUSSELL, D. J.; SCHWARZ, B.; WALL, D. H.; BROSE, U.; DECAËNS, T.; LAVELLE, P.; LOREAU, M.; MATHIEU, J.; MULDER, C.; VAN DER PUTTEN, W. H.; RILLIG, M. C.; THAKUR, M. P.; VRIES, F. T. de; WARDLE, D. A.; AMMER, C.; AMMER, S.; ARAI, M.; AYUKE, F. O.; BAKER, G. H.; BARETTA, D.; BARKUSKY, D.; BEAUSÉJOUR, R.; BEDANO, J. C.; BIRKHOFER, K.; BLANCHART, E.; BLOSSEY, B.; BOLGER, T.; BRADLEY, R. L.; BROSSARD, M.; BURTIS, J. C.; CAPOWIEZ, Y.; CAVAGNARO, T. R.; CHOI, A.; CLAUSE, J.; CLUZEAU, D.; COORS, A.; CROTTY, F. V.; CRUMSEY, J. M.; DÁVALOS, A.; COSÍN; DOBSON, A. M.; DOMÍNGUEZ, A.; DUHOUR, A. E.; VAN EEKEREN, N.; EMMERLING, C.; FALCO, L. B.; FERNÁNDEZ, R.; FONTE, S. J.; FRAGOSO, C.; FRANCO, A. L. C.; FUSILERO, A.; GERASKINA, A. P.; GHOLAMI, S.; GONZÁLEZ, G.; GUNDALE, M. J.; LÓPEZ, M. G.; HACKENBERGER, B. K.; HACKENBERGER, D. K.; HERNÁNDEZ, L. M.; HIRTH, J. R.; HISHI, T.; HOLDSWORTH, A. R.; HOLMSTRUP, M.; HOPFENSPERGER, K. N.; LWANGA, E. H.; HUHTA, V.; HURISSO, T. T.; IANNONE III, B. V.; IORDACHE, M.; IRMLER, U.; IVASK, M.; JESÚS, J. B.; JOHNSON-MAYNARD, J. L.; JOSCHKO, M.; KANEKO, N.; KANIANSKA, R.; KEITH, A. M.; KERNECKER, M. L.; KONÉ, A. W.; KOOCH, Y.; KUKKONEN, S. T.; LALTHANZARA, H.; LAMMEL, D. R.; LEBEDEV, I. M.; LE CADRE. E.; LINCOLN, N. K.; LÓPEZ-HERNÁNDEZ, D.; LOSS, S. R.; MARICHAL, R.; MATULA, R.; MINAMIYA, Y.; MOOS, J. H.; MORENO, G.; MORÓN-RÍOS, A.; MOTOHIRO, H.; MUYS, B.; NEIRYNCK, J.; NORGROVE, L.; NOVO, M.; NUUTINEN, V.; NUZZO, V.; RAHMAN, P. M.; PANSU, J.; PAUDEL, S.; PÉRÈS, G.; PÉREZ CAMACHO, L.; PONGE, J.-F.; PRIETZEL, J.; RAPOPORT, I. B.; RASHID, M. I.; REBOLLO, S.; RODRÍGUEZ, M. A.; ROTH, A. M.; ROUSSEAU, G. X.; ROZEN, A.; SAYAD, E.; VAN SCHAIK, L.; SCHARENBROCH, B.; SCHIRRMANN, M.; SCHMIDT, O.; SCHRÖDER, B.; SEEBER, J.; SHASHKOV, M. P.; SINGH, J.; SMITH, S. M.; STEINWANDTER, M.; SZLAVECZ, K.; TALAVERA, J. A.; TRIGO, D.; TSUKAMOTO, J.; URIBE-LÓPEZ, S.; VALENÇA, A. W. de; VIRTO, I.; WACKETT, A. A.; WARREN, M. W.; WEBSTER, E. R.; WEHR, N. H.; WHALEN, J. K.; WIRONEN, M. B.; WOLTERS, V.; WU, P.; ZENKOVA, I. V.; ZHANG, W.; CAMERON, E. K.; EISENHAUER, N. Global data on earthworm abundance, biomass, diversity and corresponding environmental properties. Scientific Data, v. 8, n. 136, 2021. 12 p.| Biblioteca(s): Embrapa Florestas. |
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| 6. | | PHILLIPS, H. R. P.; GUERRA, C. A.; BARTZ, M. L. C.; BRIONES, M. J. I.; BROWN, G. G.; CROWTHER, T. W.; FERLIAN, O.; GONGALSKY, K. B.; VAN DEN HOOGEN, J.; KREBS, J.; ORGIAZZI, A.; ROUTH, D.; SCHWARZ, B.; BACH, E. M.; BENNETT, J.; BROSE, U.; DECAËNS, T.; KÖNIG-RIES, B.; LOREAU, M.; MATHIEU, J.; MULDER, C.; VAN DER PUTTEN, W. H.; RAMIREZ, K. S.; RILLIG, M. C.; RUSSELL, D.; RUTGERS, M.; THAKUR, M. P.; VRIES, F. T. de; WALL, D. H.; WARDLE, D. A.; ARAI, M.; AYUKE, F. O.; BAKER, G. H.; BEAUSÉJOUR, R.; BEDANO, J. C.; BIRKHOFER, K.; BLANCHART, E.; BLOSSEY, B.; BOLGER, T.; BRADLEY, R. L.; CALLAHAM, M. A.; CAPOWIEZ, Y.; CAULFIELD, M. E.; CHOI, A.; CROTTY, F. V.; DÁVALOS, A.; DIAZ COSIN, D. J.; DOMINGUEZ, A.; ESTEBAN DUHOUR, A.; VAN EEKEREN, N.; EMMERLING, C.; FALCO, L. B.; FERNÁNDEZ, R.; FONTE, S. J.; FRAGOSO, C.; FRANCO, A. L. C.; FUGÈRE, M.; FUSILERO, A. T.; GHOLAMI, S.; GUNDALE, M. J.; GUTIÉRREZ LÓPEZ, M.; HACKENBERGER, D. K.; HERNÁNDEZ, L. M.; HISHI, T.; HOLDSWORTH, A. R.; HOLMSTRUP, M.; HOPFENSPERGER, K. N.; HUERTA LWANGA, E.; HUHTA, V.; HURISSO, T. T.; IANNONE III, B. V.; IORDACHE, M.; JOSCHKO, M.; KANEKO, N.; KANIANSKA, R.; KEITH, A. M.; KELLY, C. A.; KERNECKER, M. L.; KLAMINDER, J.; KONÉ, A. W.; KOOCH, Y.; KUKKONEN, S. T.; LALTHANZARA, H.; LAMMEL, D. R.; LEBEDEV, I. M.; LI, Y.; JESUS LIDON, J. B.; LINCOLN, N. K.; LOSS, S. R.; MARICHAL, R.; MATULA, R.; MOOS, J. H.; MORENO, G.; MORÓN-RÍOS, A.; MUYS, B.; NEIRYNCK, J.; NORGROVE, L.; NOVO, M.; NUUTINEN, V.; NUZZO, V.; MUJEEB RAHMAN, P.; PANSU, J.; PAUDEL, S.; PÉRÈS, G.; PÉREZ-CAMACHO, L.; PIÑEIRO, R.; PONGE, J.-F.; RASHID, M. I.; REBOLLO, S.; RODEIRO-IGLESIAS, J.; RODRÍGUEZ, M. Á.; ROTH, A. M.; ROUSSEAU, G. X.; ROZEN, A.; SAYAD, E.; VAN SCHAIK, L.; SCHARENBROCH, B. C.; SCHIRRMANN, M.; SCHMIDT, O.; SCHRÖDER, B.; SEEBER, J.; SHASHKOV, M. P.; SINGH, J.; SMITH, S. M.; STEINWANDTER, M.; TALAVERA, J. A.; TRIGO, D.; TSUKAMOTO, J.; VALENÇA, A. W. de; VANEK, S. J.; VIRTO, I.; WACKETT, A. A.; WARREN, M. W.; WEHR, N. H.; WHALEN, J. K.; WIRONEN, M. B.; WOLTERS, V.; ZENKOVA, I. V.; ZHANG, W.; CAMERON, E. K.; EISENHAUER, N. Global distribution of earthworm diversity. Science, v. 366, n. 6464, p. 480-485, Oct. 2019.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 6 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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