Now showing items 1-10 of 12
Kinetics of nitrogen and phosphorus release in varying food supplies by Daphnia magna
(Kluwer Academic Publishers; Dr. W. Junk Publishers ; Springer Science+Business Media, 1982-10)
Rates of nitrogen and phosphorus release from individual Daphnia magna were determined by measuring ammonia and soluble reactive phosphorus in successive 10-min incubations in small (0.05 ml) vessels after the animals were ...
The effect of mean and variance in resource supply on survival of annuals from Mediterranean and desert environments
(Springer-Verlag, 2004-10)
Resource availability is often characterized by mean annual amounts, while ignoring the spatial variation within habitats and the temporal variation within a year. Yet, temporal and spatial variation may be especially ...
Seasonal changes in the respiratory electron transport system (ETS) and respiration of the zebra mussel, Dreissena polymorpha in Saginaw Bay, Lake Huron
(Kluwer Academic Publishers; Springer Science+Business Media, 2001-04)
Electron transport system activity (ETS) and respiration rates (R) of the zebra mussel, Dreissena polymorpha , were determined monthly from April to November over 2 years at two sites in Saginaw Bay, Lake Huron. The sites ...
Coastal eutrophication assessment in the United States
(Kluwer Academic Publishers; Springer Science+Business Media, Inc., 2006-04-21)
Recent national assessments document that nitrogen-driven coastal eutrophication is widespread and increasing in the United States. This significant coastal pollution problem includes impacts including increased areas and ...
Predicting the Hypoxic‐Volume in Chesapeake Bay with the Streeter–Phelps Model: A Bayesian Approach 1
(Blackwell Publishing LtdWiley Periodicals, Inc., 2011-12)
Sources of reactive nitrogen affecting ecosystems in Latin America and the Caribbean: current trends and future perspectives
(Kluwer Academic Publishers; Springer Science+Business Media, Inc., 2006-04-06)
While the amount of reactive nitrogen circulating at the global level has increased markedly in the last century, the effects of this increase are largely seen at the regional level due to interacting ecological and ...
The effects of size of opening in vegetation and litter cover on seedling establishment of goldenrods ( Solidago spp.)
(Springer-Verlag, 1983-11)
We investigated the effects of size of opening in the vegetation and litter cover on seedling establishment of two species of goldenrods ( Solidago spp.) in an abandoned field in southwestern Michigan, U.S.A. Seeds of S. ...
Community-level consequences of species interactions in an annual plant community
(Blackwell Publishing Ltd, 2009-10)
Question : How does the intensity of species interactions affect species and functional group composition of an annual plant community? Location : Sede Boqer, Negev Desert, Israel. Methods : The potential for competitive ...
Quantifying individual- and community-level effects of competition using experimentally-determined null species pools
(Blackwell Publishing Ltd, 2000-06)
The effects of competition on individual fitness and species diversity were investigated in a first-year old field by comparing the natural community to an experimentally-determined null community. The species pool for the ...
Effects of water pulsing on individual performance and competitive hierarchies in plants
(Blackwell Publishing Ltd, 2001-04)
In a glass house experiment, we investigated the effect of both the frequency of water pulses and the total amount of water supplied on individual performance in the absence and presence of neighbors. We used monocultures ...