Current
projects in the Freshwater Ecology Lab (Schrenk 211)
Functional role of biodiversity in
streams
I am currently examining the
functional role of biota in streams. In
other words, what do stream organisms do in relation to the ecosystem. Certain organisms play prominent roles in
affecting ecosystem processes.
Additionally, a diverse assemblage of species may function at a faster
rate than a single or limited set of species.
Current projects are looking at the role of invertebrates and microbes in
controlling litter breakdown in streams, and the role of algae and plants in
affecting primary production and nutrient uptake.
Nutrient uptake in streams
Nutrient uptake in streams
is an important process that can protect downstream ecosystems from possible eutrophication. A
variety of factors influence the uptake of nutrients in streams. Several students and I are conducting
experimental studies of nutrient uptake under different biological and
hydrological scenarios. We expect that
more algae and leaf litter will enable higher uptake rates, and slower stream
velocities will also lead to higher uptake.
John Campbell is studying nutrient uptake
in experimental stream channels.
Response of streams to anthropogenic
stressors
Most streams are influenced
by many activities related to humanity.
Our activities can affect different types of stream characteristics,
from the physical structure of the streambed to dissolved chemicals in the
water to animals living in the streams.
Current projects in this regard are examining the effects of several
different stressors on stream characteristics, especially stream biota and the
processes they affect, in streams around UMR and further afield.
Monitoring of local freshwater systems
UMR is located close to several
different freshwater ecosystems. As part
of my class in Freshwater Ecology, we have started a monthly sampling program
for several local ponds, streams, and springs.
These include areas at the Marguerite Bray Conservation
Area and the new Audobon
Nature and Art Center.
Stacy Jones, recent graduate of UMR, shown
here along Mill Creek.
People in the lab (present and past)
Cem Selman (Ph.D. student in
Environmental Engineering) Cem is examining nutrient uptake in small streams.
Amanda Weimer (MS Student in
BioSci) Amanda is studying environmental controls
on cottonwoods in a
Janet
Ryan Steele (undergrad in BioSci)
Ryan is conducting an OURE project on the use of algae to produce biodiesel.
Cory Cheatham (undergrad in BioSci)
Cory is conducting an OURE project on molecular analysis of stream microbes.
Jessica Schaefer (undergrad
in BioSci) Jessica helped out in the lab and field
as a general technician.
Cynthia Buschmann (undergrad
in BioSci) Cindy helped out in the lab and field as
a general technician.
John Campbell (undergrad in BioSci) John is a former OURE student and helps out in
the lab.
Christina Bradstreet
(undergrad in BioSci) Christina conducted an OURE
project on fungal communities in streams.
Aysheia Prewett (undergrad in BioSci)
Aysheia conducted a long term experiment on the functional role of fungal
diversity in litter decomposition.
Brandie Amsden
(undergrad in BioSci) Brandie looked at
invertebrates in local streams and started a reference collection.
Stacy Jones (undergrad in BioSci) Stacy did research for credit for one semester
and helped pioneer the experimental stream setup.