Variations in diatom communities at genus and species levels in peatlands (central China) linked to microhabitats and environmental factors

Chen, Xu; Bu, Zhao‐Jun; Stevenson, Mark A.; Cao, Yanmin; Zeng, Linghan; Qin, Bo

doi:10.1016/j.scitotenv.2016.06.015

Cited by 35 publications

(24 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…We used partial redundancy analysis (pRDA) with the Monte Carlo permutation test (999 permutations) to explain the total variation of a species matrix by the sources of spatial variables and environmental variables, the combined effect of two or three of these variables, and the unexplained fraction (Peres-Neto et al, 2006). To achieve normality, all environmental variables, except pH, were transformed by log(x + 1) (Chen et al, 2016). The species matrices were converted by Hellinger transformation to reduce the weight of abundant species (Legendre and Gallagher, 2001).…”

Section: Discussionmentioning

confidence: 99%

Environmental Together With Interspecific Interactions Determine Bryophyte Distribution in a Protected Mire of Northeast China

Chen

Mallik

et al. 2020

Front. Earth Sci.

Self Cite

View full text Add to dashboard Cite

Question: What environmental variables and plant-plant interactions affect mire bryophyte distribution and does the surrounding landscape with human disturbance play a role in the mire bryophyte distribution? Location: Jinchuan mire, Northeast China. Methods: We studied the spatial distribution of bryophytes in 100 1 × 1 m quadrats in the mire. Spatial variables were simulated by analysis of the distance-based Moran's eigenvector maps (dbMEM). Variation partitioning analysis was used to reveal the relative contribution of spatial and environmental variables to bryophytes. The relationship between environmental variables and bryophytes was tested by redundancy analysis (RDA). We used co-occurrence and niche overlap models to detect interactions among bryophytes. We also studied the influence of the surrounding landscape on the distribution of bryophytes in relation to water chemistry. Results: The eight bryophytes occupying part of the mire had both a general distribution trend and a local spatial structure. Over 40% of the total variation in cover among bryophytes could be explained by spatial and environmental variables. In this fraction, the environmental variables explained 29.7% of the variation, of which only 4.5% was not spatially structured. RDA showed the contribution of dwarf shrub cover (SC), Na, and P to the bryophyte distribution was relatively large. Concentration of Na and SC decreased gradually from north to south, and contributed most to the variation in species composition along the first axis. The concentrations of P decreased from east to west, and contributed along the second axis. All the bryophyte species were spatially isolated but with large niche overlaps, indicating that the bryophyte community was structured by interspecific competition.

show abstract

Section: Discussionmentioning

confidence: 99%

Environmental Together With Interspecific Interactions Determine Bryophyte Distribution in a Protected Mire of Northeast China

Chen

Mallik

et al. 2020

Front. Earth Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Diatoms are a valuable tool in water quality assessment and monitoring because of their wide geographic distribution, well studied ecology, ease of collection and sensitivity to physical, chemical and biological changes in water [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Benthic Diatoms of the Ying River (Huaihe River Basin, China) and Their Application in Water Trophic Status Assessment

Shen

Ren

et al. 2018

Water

View full text Add to dashboard Cite

Abstract:Benthic diatoms are an indispensable link of the water ecological system in terms of energy flow and material cycling, and they directly or indirectly reflect the status of the water environment. We sampled benthic diatoms and environmental factors from April to May of 2013 from 53 sites along the Ying River to study their application in local water trophic status assessment, with a focus on the dominant benthic diatom species, their composition and distribution pattern, and the relationship between benthic diatoms and environmental factors. A total of 370 species and varieties were identified, belonging to 56 genera and six orders. The dominant species were as follows: Nitzschia inconspicua Grunow, Achnanthidium minutissimum (Kützing) Czarnecki, Navicula aitchelbee L. L. Bahls, Nitzschia palea (Kützing) Smith, Cyclotella meneghiniana Kützing, Navicula submuralis Hustedt and Mayamaea atomus (Kützing) Lange-Bertalot. The Ying River was divided into five orders using the Strahler method and three regions according to total nitrogen, total phosphorus and ammonia nitrogen. In region Y-1, which had the lowest nutrient level, the dominant species was Achnanthidium minutissimum. In region Y-2, which had the highest nutrient level, Navicula aitchelbee, Nitzschia palea, and Cyclotella meneghiniana were dominant, while in region Y-3, which had moderate nutrient levels, Nitzschia inconspicua was dominant. Pearson's correlation analysis and canonical correspondence analysis (CCA) revealed a significant correlation between the environmental factors with dominant species and diatom indices (especially the SPI). Our study indicates that dominant species and diatom indices can, to some extent, indicate the environment, especially nutrient distribution.

show abstract

“…Diatoms are one of the most ubiquitous and diverse photosynthetic microorganisms in aquatic ecosystems [27] and one of the most widely represented algal groups in peat bogs (e.g., [28][29][30][31][32]). The diversity of diatoms in the peatlands of Europe is very high, with around 403 recorded taxa, and a majority representation of the genera Pinnularia (14%), Eunotia (10%), and Navicula (10%), with respect to the total number of taxa [28,29,[32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50], and with similar species numbers and compositions to those found in peatlands in other regions of the world due to the cosmopolitan nature of diatom species (e.g., [30,31,51,52]). However, knowledge about the ecology of diatom communities in peatlands is still insufficient compared with other types of wetlands [25].…”

Section: Diatoms In Peatland Ecosystemsmentioning

confidence: 99%

“…Like vegetation, species richness of diatom communities decreases with the moisture and chemical gradient, from fen to bog [42,53]. Water availability, pH, and ionic composition of water are the main factors in the distribution of diatom species in microhabitats and the composition of diatom communities in peatlands [29,31,44,52].…”

Section: Diatoms In Peatland Ecosystemsmentioning

confidence: 99%

“…The Rivière-du-Loup (ii) peat-bog diatom assemblage shows the evolution of the peat bog toward a greater degree of ombrotrophy, characterized by the decreasing diversity of an assemblage dominated by Eunotia tenella, E. paludosa, Frustulia saxonica, and Pinnularia borealis and with the presence of H. amphioxys, which were replaced by an almost monospecific dominance of E. paludosa, an indicator of oligotrophy and long drought periods in Sphagnum peat bogs. However, Lortie [59] mentioned as main limitations of diatoms the absence of adequate transfer functions in peatlands, their distribution in microhabitats, and the absence of knowledge about species autoecology, which remains poorly studied to this day (e.g., [29,31,50]).…”

Section: Diatoms As Indicators Of Long-term Change In Peatlandsmentioning

confidence: 99%

See 1 more Smart Citation

Diatoms in Paleoenvironmental Studies of Peatlands

Carballeira

Pontevedra-Pombal

2020

Quaternary

View full text Add to dashboard Cite

The great diversity of diatoms in aquatic ecosystems and their close relationship with water chemistry make them one of the most informative and widely used biological proxies in paleoenvironmental studies of wetlands, except for peatland ecosystems. Currently, significant controversy still exists over the preservation of diatoms in peat. However, considerable evidence indicates that diatoms remain in good condition in minerotrophic peatlands, and they have been successfully used in paleoenvironmental studies in high-latitude regions and especially in Southern Europe.

show abstract

Variations in diatom communities at genus and species levels in peatlands (central China) linked to microhabitats and environmental factors

Cited by 35 publications

References 30 publications

Environmental Together With Interspecific Interactions Determine Bryophyte Distribution in a Protected Mire of Northeast China

Environmental Together With Interspecific Interactions Determine Bryophyte Distribution in a Protected Mire of Northeast China

Benthic Diatoms of the Ying River (Huaihe River Basin, China) and Their Application in Water Trophic Status Assessment

Diatoms in Paleoenvironmental Studies of Peatlands

Contact Info

Product

Resources

About