Solé M, Fetzer I, Wennrich R, Sridhar K R, Harms H, Krauss G
Helmholtz Centre for Environmental Research - UFZ, Department of Environmental Microbiology, Permoserstrasse 15, D-04318 Leipzig, Germany.
Sci Total Environ. 2008 Jan 25;389(2-3):557-65. doi: 10.1016/j.scitotenv.2007.09.010. Epub 2007 Nov 1.
With a profound knowledge of how physico-chemical parameters affect these communities, microbial communities could be used as indicators for environmental changes and for risk assessment studies. We studied aquatic hyphomycete communities in rivers and aquifers from sites shaped by intense mining activities (namely the "Mansfeld region") and chemical industry (cities of Halle and Bitterfeld) in Central Germany. Environmental stress factors such as high concentrations of heavy metals, sulphate, and nitrate as well as low concentrations of oxygen significantly reduced the diversity and biomass of hyphomycetes in the investigated samples. Redundancy analysis (RDA) indicates that variations in water chemistry cause a significant proportion of the change in fungal community structure (86.2%). Fungi were negatively correlated with high metal and nutrient concentrations. RDA also showed a strong influence of organic matter on individual species, with Anguillospora longissima (Sacc. et Syd.), Clavatospora longibrachiata (Ingold), Clavariopsis aquatica (De Wild), Flagellospora curvula (Ingold), Heliscus lugdunensis (Sacc. et Thérry), Tumularia aquatica (Ingold) and Lemonniera aquatica (De Wild) being most sensitive. We propose that aquatic hyphomycete communities can be used as sensitive and integrative indicators for freshwater quality.
由于深知物理化学参数如何影响这些群落，微生物群落可用作环境变化的指标以及风险评估研究的指标。我们研究了德国中部受高强度采矿活动（即“曼斯费尔德地区”）和化学工业（哈雷市和比特费尔德市）影响的河流和含水层中的水生丝状真菌群落。环境压力因素，如高浓度的重金属、硫酸盐和硝酸盐以及低浓度的氧气，显著降低了所研究样本中丝状真菌的多样性和生物量。冗余分析（RDA）表明，水化学变化导致真菌群落结构变化的很大一部分（86.2%）。真菌与高金属和养分浓度呈负相关。RDA还显示有机质对单个物种有强烈影响，其中长鳗孢（Sacc. et Syd.）、长臂棒孢（Ingold）、水生棒形孢（De Wild）、弯鞭孢（Ingold）、卢登海氏壳孢（Sacc. et Thérry）、水生瘤孢（Ingold）和水生柠檬孢（De Wild）最为敏感。我们建议水生丝状真菌群落可作为淡水水质的敏感和综合指标。
