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Lee RM, Griffin N, Jones E, Abbott BW, Frei RJ, Bratsman S, Proteau M, Errigo IM, Shogren A, Bowden WB, Zarnetske JP, Aanderud ZT. Bacterioplankton dispersal and biogeochemical function across Alaskan Arctic catchments. Environ Microbiol 2022; 24:5690-5706. [PMID: 36273269 DOI: 10.1111/1462-2920.16259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 10/21/2022] [Indexed: 01/12/2023]
Abstract
In Arctic catchments, bacterioplankton are dispersed through soils and streams, both of which freeze and thaw/flow in phase, seasonally. To characterize this dispersal and its potential impact on biogeochemistry, we collected bacterioplankton and measured stream physicochemistry during snowmelt and after vegetation senescence across multiple stream orders in alpine, tundra, and tundra-dominated-by-lakes catchments. In all catchments, differences in community composition were associated with seasonal thaw, then attachment status (i.e. free floating or sediment associated), and then stream order. Bacterioplankton taxonomic diversity and richness were elevated in sediment-associated fractions and in higher-order reaches during snowmelt. Families Chthonomonadaceae, Pyrinomonadaceae, and Xiphinematobacteraceae were abundantly different across seasons, while Flavobacteriaceae and Microscillaceae were abundantly different between free-floating and sediment-associated fractions. Physicochemical data suggested there was high iron (Fe+ ) production (alpine catchment); Fe+ production and chloride (Cl- ) removal (tundra catchment); and phosphorus (SRP) removal and ammonium (NH4 + ) production (lake catchment). In tundra landscapes, these 'hot spots' of Fe+ production and Cl- removal accompanied shifts in species richness, while SRP promoted the antecedent community. Our findings suggest that freshet increases bacterial dispersal from headwater catchments to receiving catchments, where bacterioplankton-mineral relations stabilized communities in free-flowing reaches, but bacterioplankton-nutrient relations stabilized those punctuated by lakes.
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Affiliation(s)
- Raymond M Lee
- Department of Plant and Wildlife Sciences, Brigham Young University, Provo, Utah, USA
| | - Natasha Griffin
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvalis, Oregon, USA
| | - Erin Jones
- Department of Plant and Wildlife Sciences, Brigham Young University, Provo, Utah, USA
| | - Benjamin W Abbott
- Department of Plant and Wildlife Sciences, Brigham Young University, Provo, Utah, USA
| | - Rebecca J Frei
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
| | - Samuel Bratsman
- Department of Plant and Wildlife Sciences, Brigham Young University, Provo, Utah, USA
| | - Mary Proteau
- Department of Plant and Wildlife Sciences, Brigham Young University, Provo, Utah, USA
| | - Isabella M Errigo
- Department of Plant and Wildlife Sciences, Brigham Young University, Provo, Utah, USA
| | - Arial Shogren
- Department of Biological Sciences, The University of Alabama, Tuscaloosa, Alabama, USA
| | - William B Bowden
- The Rubenstein School of Environment and Natural Resources, University of Vermont, Burlington, Vermont, USA
| | - Jay P Zarnetske
- Department of Earth and Environmental Sciences, Michigan State University, East Lansing, Michigan, USA
| | - Zachary T Aanderud
- Department of Plant and Wildlife Sciences, Brigham Young University, Provo, Utah, USA
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Kavazos CRJ, Huggett MJ, Mueller U, Horwitz P. Bacterial and ciliate biofilm community structure at different spatial levels of a salt lake meta-community. FEMS Microbiol Ecol 2019; 94:5066167. [PMID: 30124812 DOI: 10.1093/femsec/fiy148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 08/01/2018] [Indexed: 11/14/2022] Open
Abstract
Meta-communities are assembled along an ecological scale that determines local and regional diversity. Spatial patterns have been detected in planktonic bacterial communities at distances <20 m, but little is known about the occurrence of similar variation for other microbial groups and changes in microbial meta-community assembly at different levels of a meta-community. To examine this variation, the biofilm of eight saline ponds were used to investigate processes shaping diversity within ponds (β) and between ponds (δ). Bacterial and ciliate communities were assessed using ARISA and T-RFLP respectively, while diversity partitioning methods were used to examine the importance of taxonomic turnover and variation partitioning was used to distinguish spatial from environmental determinants. The results show that turnover is important for determining β- and δ-diversity of biofilms. Spatial factors are important drivers of bacterial β-diversity but were unimportant for ciliate β-diversity. Environmental variation was a strong determinant of bacterial and ciliate δ-diversity, suggesting sorting processes are important for assembling pond communities. Determinants of diversity in bacteria are not universal for ciliates, suggesting higher functional redundancy of bacteria or the greater niche breadth of ciliates may be important in discriminating assembly processes between the two organisms.
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Affiliation(s)
- Christopher R J Kavazos
- Centre for Ecosystem Management, School of Science, Edith Cowan University, 270 Joondalup Dr, Joondalup, WA 6027, Australia
| | - Megan J Huggett
- Centre for Ecosystem Management, School of Science, Edith Cowan University, 270 Joondalup Dr, Joondalup, WA 6027, Australia.,Centre for Marine Ecosystems Research, School of Science, Edith Cowan University, 270 Joondalup Dr, Joondalup, WA 6027, Australia.,School of Environmental and Life Sciences, The University of Newcastle, 10 Chittaway Dr, Ourimbah, NSW 2258, Australia
| | - Ute Mueller
- Centre for Ecosystem Management, School of Science, Edith Cowan University, 270 Joondalup Dr, Joondalup, WA 6027, Australia.,Centre for Marine Ecosystems Research, School of Science, Edith Cowan University, 270 Joondalup Dr, Joondalup, WA 6027, Australia
| | - Pierre Horwitz
- Centre for Ecosystem Management, School of Science, Edith Cowan University, 270 Joondalup Dr, Joondalup, WA 6027, Australia
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Hu A, Li S, Zhang L, Wang H, Yang J, Luo Z, Rashid A, Chen S, Huang W, Yu CP. Prokaryotic footprints in urban water ecosystems: A case study of urban landscape ponds in a coastal city, China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 242:1729-1739. [PMID: 30064876 DOI: 10.1016/j.envpol.2018.07.097] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 07/19/2018] [Accepted: 07/22/2018] [Indexed: 06/08/2023]
Abstract
The urban water ecosystems, such as the landscape ponds are commonly considered under the influence of anthropogenic disturbances, which can lead to the deterioration of the water quality. The prokaryotic communities are considered as one of the best indicators of the water quality. However, there are significant gaps in understanding the ecological processes that shape the composition and function of prokaryotic communities in the urban water ecosystems. Here, we investigated the biogeographic distribution of prokaryotic assemblages in water environments including landscape ponds, drinking water reservoirs, influents (IFs) and effluents (EFs) of wastewater treatment plants of a coastal city (Xiamen), China, by using 16S rDNA amplicon sequencing. Our results indicated that the ponds had higher α-diversity of prokaryotic communities than those in the reservoirs, while there were significant variations in the community compositions among ponds, reservoirs, IFs and EFs. Moreover, ponds harbored a significantly higher proportion of sewage- and fecal-indicator taxa than those in the reservoirs, suggesting the occurrence of exogenous pollution in the urban ponds. Null model analysis revealed that dispersal limitation was the main ecological processes resulting in the divergence of prokaryotic community compositions between ponds and other environments, while dispersal limitation and variable selection played an essential role in the formation of unique prokaryotic assemblages in the reservoirs. Function predication analysis demonstrated that the ponds shared more similar functional profiles with IFs or EFs (e.g., chemoheterotrophy, fermentation, chlorate reducers, nitrate reduction and respiration) than the reservoirs, whereas dominance of photoautotrophy was observed in the reservoirs. Overall, this study provides a profound insight of the ecological mechanisms underlying the responses of prokaryotic communities in the urban landscape ponds to the anthropogenic disturbances.
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Affiliation(s)
- Anyi Hu
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
| | - Shuang Li
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lanping Zhang
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongjie Wang
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Yang
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Zhuanxi Luo
- Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Azhar Rashid
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Nuclear Institute for Food and Agriculture, Tarnab, Peshawar, Pakistan
| | - Shaoqing Chen
- Village Planning and Construction Management Station of Jimei District, Xiamen 361022, China
| | - Weixiong Huang
- Xinglin Construction and Development Co. LTD., Xiamen 361022, China
| | - Chang-Ping Yu
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan
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