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Department Ecosystem Biology, University South Bohemia Lab. Aquatic Insect Ecology & Relict Ecosystems ENTU, Biology Centre AV CR Aquatic Insect Lab Unraveling the responses of freshwater macroinvertebrates facing multiple stressors from local to global scales David Boukal working group Talk by Samuel Dijoux (PhD student)

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Page 1: Aquatic Insect Lab · Department Ecosystem Biology, University South Bohemia Lab. Aquatic Insect Ecology & Relict Ecosystems ENTU, Biology Centre AV CR Aquatic Insect Lab Unraveling

Department Ecosystem Biology,University South Bohemia

Lab. Aquatic Insect Ecology & Relict EcosystemsENTU, Biology Centre AV CR

Aquatic Insect Lab

Unraveling the responses of freshwater macroinvertebrates

facing multiple stressors from local to global scales

David Boukal working group

Talk by Samuel Dijoux (PhD student)

Page 2: Aquatic Insect Lab · Department Ecosystem Biology, University South Bohemia Lab. Aquatic Insect Ecology & Relict Ecosystems ENTU, Biology Centre AV CR Aquatic Insect Lab Unraveling

Freshwater habitats under multiple stressors

Page 3: Aquatic Insect Lab · Department Ecosystem Biology, University South Bohemia Lab. Aquatic Insect Ecology & Relict Ecosystems ENTU, Biology Centre AV CR Aquatic Insect Lab Unraveling

• Indicators of the state of aquatic ecosystems Simple to manipulate

• Wide and variable trophic niches Variety of life strategies

Our pet subjects: aquatic macroinvertebrates !

Page 4: Aquatic Insect Lab · Department Ecosystem Biology, University South Bohemia Lab. Aquatic Insect Ecology & Relict Ecosystems ENTU, Biology Centre AV CR Aquatic Insect Lab Unraveling

Realism

From small to large scales: a variety of approaches to combine

Control of environment / Simplicity

Field sampling

Field experimentMesocosms

Laboratory experiments

Theoretical modelling

Page 5: Aquatic Insect Lab · Department Ecosystem Biology, University South Bohemia Lab. Aquatic Insect Ecology & Relict Ecosystems ENTU, Biology Centre AV CR Aquatic Insect Lab Unraveling

Current projects: Impacts of heavy metals on macroinvertebrate communities

• Inventory of the biodiversity in polluted freshwaters

• Analysis of heavy metal content in selected biota

• Transplant experiments to test possible adaptation/acclimation of species to pollution

Page 6: Aquatic Insect Lab · Department Ecosystem Biology, University South Bohemia Lab. Aquatic Insect Ecology & Relict Ecosystems ENTU, Biology Centre AV CR Aquatic Insect Lab Unraveling

Current projects: Local adaptations to urbanization

• Studying biodiversity in small standing waters around cities

• Analyzing species adaptation to varying temperature conditions

Page 7: Aquatic Insect Lab · Department Ecosystem Biology, University South Bohemia Lab. Aquatic Insect Ecology & Relict Ecosystems ENTU, Biology Centre AV CR Aquatic Insect Lab Unraveling

Current projects: Monitoring the colonisation of macroinvertebrates in post-mining sites

• Biodiversity of post-mining sites

• Ongoing long-term study of community assembly

• Aquatic-terrestrial coupling (dispersal and emergence patterns of chironomids)

Page 8: Aquatic Insect Lab · Department Ecosystem Biology, University South Bohemia Lab. Aquatic Insect Ecology & Relict Ecosystems ENTU, Biology Centre AV CR Aquatic Insect Lab Unraveling

Current projects: Effects of habitat complexity on predator-prey interactions

• Mesocosm and lab experiments

• Measuring the effect of habitat complexity on predation

Page 9: Aquatic Insect Lab · Department Ecosystem Biology, University South Bohemia Lab. Aquatic Insect Ecology & Relict Ecosystems ENTU, Biology Centre AV CR Aquatic Insect Lab Unraveling

Current projects: Influence of warming on individuals and species interactions

• Laboratory experiments

• Measuring how temperature alters behavior, physiology and trophic interactions in selected aquatic macroinvertebrates

Should I allocate myto grow or to maintain

my vital functions ?

Page 10: Aquatic Insect Lab · Department Ecosystem Biology, University South Bohemia Lab. Aquatic Insect Ecology & Relict Ecosystems ENTU, Biology Centre AV CR Aquatic Insect Lab Unraveling

Current perspectives: Trophic interactions under global change

• Theoretical modelling

• Predicting how species responses to global changes affect the structure of food webs

Page 11: Aquatic Insect Lab · Department Ecosystem Biology, University South Bohemia Lab. Aquatic Insect Ecology & Relict Ecosystems ENTU, Biology Centre AV CR Aquatic Insect Lab Unraveling

International team• 3 Post-Doc researchers • 6 PhD students• 1 Technician

~ 3-6 internship students/year (MSc./Bc.)

Our Team: Join us!

Samuel Dijoux

[email protected]

David [email protected]