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Interactions between sediment microbial ecology and physical dynamics drive heterogeneity in contextually similar depositional systems. / Hope, Julie A.; Malarkey, Jonathan; Baas, Jaco H. et al.
Yn: Limnology and Oceanography, Cyfrol 65, Rhif 10, 10.2020, t. 2403-2419.

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HarvardHarvard

Hope, JA, Malarkey, J, Baas, JH, Peakall, J, Parsons, D, Manning, AJ, Bass, S, Lichtman, I, Thorne, P, Ye, L & Paterson, DM 2020, 'Interactions between sediment microbial ecology and physical dynamics drive heterogeneity in contextually similar depositional systems', Limnology and Oceanography, cyfrol. 65, rhif 10, tt. 2403-2419. https://doi.org/10.1002/lno.11461

APA

Hope, J. A., Malarkey, J., Baas, J. H., Peakall, J., Parsons, D., Manning, A. J., Bass, S., Lichtman, I., Thorne, P., Ye, L., & Paterson, D. M. (2020). Interactions between sediment microbial ecology and physical dynamics drive heterogeneity in contextually similar depositional systems. Limnology and Oceanography, 65(10), 2403-2419. https://doi.org/10.1002/lno.11461

CBE

Hope JA, Malarkey J, Baas JH, Peakall J, Parsons D, Manning AJ, Bass S, Lichtman I, Thorne P, Ye L, et al. 2020. Interactions between sediment microbial ecology and physical dynamics drive heterogeneity in contextually similar depositional systems. Limnology and Oceanography. 65(10):2403-2419. https://doi.org/10.1002/lno.11461

MLA

VancouverVancouver

Hope JA, Malarkey J, Baas JH, Peakall J, Parsons D, Manning AJ et al. Interactions between sediment microbial ecology and physical dynamics drive heterogeneity in contextually similar depositional systems. Limnology and Oceanography. 2020 Hyd;65(10):2403-2419. Epub 2020 Mai 26. doi: 10.1002/lno.11461

Author

Hope, Julie A. ; Malarkey, Jonathan ; Baas, Jaco H. et al. / Interactions between sediment microbial ecology and physical dynamics drive heterogeneity in contextually similar depositional systems. Yn: Limnology and Oceanography. 2020 ; Cyfrol 65, Rhif 10. tt. 2403-2419.

RIS

TY - JOUR

T1 - Interactions between sediment microbial ecology and physical dynamics drive heterogeneity in contextually similar depositional systems

AU - Hope, Julie A.

AU - Malarkey, Jonathan

AU - Baas, Jaco H.

AU - Peakall, Jeff

AU - Parsons, Daniel

AU - Manning, Andrew J.

AU - Bass, Sarah

AU - Lichtman, Ian

AU - Thorne, Peter

AU - Ye, Leiping

AU - Paterson, David M.

PY - 2020/10

Y1 - 2020/10

N2 - This study focuses on the strong interactions between the stability of different sediments and the biological and physical variables that influence the erodibility of the bed. Sampling at short-term temporal scales illustrated the persistence of the microphytobenthic (MPB) community even during periods of frequent, high physical disturbance. The role of MPB in biological stabilisation along a changing sedimentary habitat was also assessed . Key biological and physical properties, such as the MPB biomass, composition and extracellular polymeric substances, were used to predict sediment stability (erosion threshold) of muddy and sandy habitats within close proximity to one another over multiple days as well as within emersion periods. This allowed the effects of dewatering, MPB growth and productivity to be examined as well as the resilience and recovery of the MPB community after physical disturbance from tidal currents and wave exposure. Canonical analysis of principal components (CAP) ordinations were used to illustrate the trends observed in bio-physical properties between the sites, while marginal and sequential distance-based linear models (DistLM) were used to identify key properties influencing sediment erodibility. While grain size was important for site differences in the CAP analysis, it contributed less to the variability in sediment erodibility than other key biological parameters. Among the biological predictors, MPB diversity explained very little variation in marginal tests but was a significant predictor in sequential tests when MPB biomass was also considered with diversity and biomass key predictors of sediment stability, contributing 9% and 10% respectively to the final model across all sites.

AB - This study focuses on the strong interactions between the stability of different sediments and the biological and physical variables that influence the erodibility of the bed. Sampling at short-term temporal scales illustrated the persistence of the microphytobenthic (MPB) community even during periods of frequent, high physical disturbance. The role of MPB in biological stabilisation along a changing sedimentary habitat was also assessed . Key biological and physical properties, such as the MPB biomass, composition and extracellular polymeric substances, were used to predict sediment stability (erosion threshold) of muddy and sandy habitats within close proximity to one another over multiple days as well as within emersion periods. This allowed the effects of dewatering, MPB growth and productivity to be examined as well as the resilience and recovery of the MPB community after physical disturbance from tidal currents and wave exposure. Canonical analysis of principal components (CAP) ordinations were used to illustrate the trends observed in bio-physical properties between the sites, while marginal and sequential distance-based linear models (DistLM) were used to identify key properties influencing sediment erodibility. While grain size was important for site differences in the CAP analysis, it contributed less to the variability in sediment erodibility than other key biological parameters. Among the biological predictors, MPB diversity explained very little variation in marginal tests but was a significant predictor in sequential tests when MPB biomass was also considered with diversity and biomass key predictors of sediment stability, contributing 9% and 10% respectively to the final model across all sites.

KW - microphytobenthos

KW - biostabilisation

KW - temporal dynamics

KW - biofilm

KW - sediment erosion

U2 - 10.1002/lno.11461

DO - 10.1002/lno.11461

M3 - Article

VL - 65

SP - 2403

EP - 2419

JO - Limnology and Oceanography

JF - Limnology and Oceanography

SN - 0024-3590

IS - 10

ER -