+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Effects of multiple but low pesticide loads on aquatic fungal communities colonizing leaf litter



Effects of multiple but low pesticide loads on aquatic fungal communities colonizing leaf litter



Journal of Environmental Sciences 46: 116-125



In the first tier risk assessment (RA) of pesticides, risk for aquatic communities is estimated by using results from standard laboratory tests with algae, daphnids and fish for single pesticides such as herbicides, fungicides, and insecticides. However, fungi as key organisms for nutrient cycling in ecosystems as well as multiple pesticide applications are not considered in the RA. In this study, the effects of multiple low pesticide pulses using regulatory acceptable concentrations (RACs) on the dynamics of non-target aquatic fungi were investigated in a study using pond mesocosm. For that, fungi colonizing black alder (Alnus glutinosa) leaves were exposed to multiple, low pulses of 11 different pesticides over a period of 60days using a real farmer's pesticide application protocol for apple cropping. Four pond mesocosms served as treatments and 4 as controls. The composition of fungal communities colonizing the litter material was analyzed using a molecular fingerprinting approach based on the terminal Restriction Fragment Length Polymorphism (t-RFLP) of the fungal Internal Transcribed Spacer (ITS) region of the ribonucleic acid (RNA) gene(s). Our data indicated a clear fluctuation of fungal communities based on the degree of leaf litter degradation. However significant effects of the applied spraying sequence were not observed. Consequently also degradation rates of the litter material were not affected by the treatments. Our results indicate that the nutrient rich environment of the leaf litter material gave fungal communities the possibility to express genes that induce tolerance against the applied pesticides. Thus our data may not be transferred to other fresh water habitats with lower nutrient availability.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 057731167

Download citation: RISBibTeXText

PMID: 27521943

DOI: 10.1016/j.jes.2015.11.028


Related references

Effects of inter and intraspecific diversity and genetic divergence of aquatic fungal communities on leaf litter decomposition-a microcosm experiment. Fems Microbiology Ecology 92(7):, 2016

Effects of Dry-Deposited Sulphur Dioxide on Fungal Decomposition of Angiosperm Tree Leaf Litter. I. Changes in Communities of Fungal Saprotrophs. New Phytologist 122(1): 97-110, 1992

Effects of dry-deposited sulphur dioxide on fungal decomposition of angiosperm tree leaf litter: I. Changes in communities of fungal saprotrophs. New Phytologist 122(1): 97-110, 1992

Influence of pesticide seed treatments on rhizosphere fungal and bacterial communities and leaf fungal endophyte communities in maize and soybean. Applied Soil Ecology 102: 61-69, 2016

Fungal loads of invertebrates in beech leaf litter. Revue d' Ecologie et de Biologie du Sol 16(3): 325-335, 1979

Effects of forest management practices in temperate beech forests on bacterial and fungal communities involved in leaf litter degradation. Microbial Ecology 69(4): 905-913, 2015

Alteration of microbial communities colonizing leaf litter in a temperate woodland stream by growth of trees under conditions of elevated atmospheric CO2. Applied and Environmental Microbiology 76(15): 4950-4959, 2010

Effects of invasive European bird cherry (Prunus padus) on leaf litter processing by aquatic invertebrate shredder communities in urban Alaskan streams. Hydrobiologia 736(1): 17-30, 2014

Analyses of the temporal dynamics of fungal communities colonizing the healthy wood tissues of esca leaf-symptomatic and asymptomatic vines. Plos one 9(5): E95928, 2014

Effects of temperature and litter type on fungal growth and decomposition of leaf litter. Mycoscience 52(5): 327-332, 2011

Influence of ozone on litter quality and its subsequent effects on the initial structure of colonizing microbial communities. Microbial Ecology 54(1): 151-160, 2007

Influence of Ozone on Litter Quality and Its Subsequent Effects on the Initial Structure of Colonizing Microbial Communities. Microbial Ecology 54(1): 151-160, 2007

Fungal communities of soil and leaf litter in a boreal forest of interior Alaska. Ecological Society of America Annual Meeting Abstracts 87: 378, 2002

Decomposition processes of leaf litter and fungal communities in a cool temperate forest. 2007

The role of polysaccharidase enzymes in the organization of the fungal communities of a forest leaf litter. Food Hydrocolloids 1(5-6): 519-520, 1987