Michelle L. McCrackin
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Atmospheric nitrogen deposition influences denitrification and nitrous oxide production in lakes.
Microbially mediated denitrification is an important process that may ameliorate the effects of nitrogen (N) loading by permanently removing excess N inputs. In this study, we measured the rate of… Expand
Cost of reactive nitrogen release from human activities to the environment in the United States
Leakage of reactive nitrogen (N) from human activities to the environment can cause human health and ecological problems. Often these harmful effects are not reflected in the costs of food, fuel, and… Expand
Atmospheric nitrogen deposition is associated with elevated phosphorus limitation of lake zooplankton.
Here, we present data that for the first time suggests that the effects of atmospheric nitrogen (N) deposition on nutrient limitation extend into the food web. We used a novel and sensitive assay for… Expand
Responses of soil microorganisms to resource availability in urban, desert soils
Terrestrial desert ecosystems are strongly structured by the distribution of plants, which concentrate resources and create islands of fertility relative to interplant spaces. Atmospheric nitrogen… Expand
Global importance, patterns, and controls of dissolved silica retention in lakes and reservoirs
Lentic water bodies (lakes and reservoirs) offer favorable conditions for silica (SiO2) burial in sediments. Recent global estimates suggest that (1) lentic SiO2 trapping is a globally important SiO2… Expand
Recovery of lakes and coastal marine ecosystems from eutrophication: A global meta‐analysis
In order to inform policies aimed at reducing nutrient emissions to surface waters, it is essential to understand how aquatic ecosystems respond to eutrophication management. Using data from 89… Expand
Factors influencing export of dissolved inorganic nitrogen by major rivers: A new, seasonal, spatially explicit, global model
Substantial effort has focused on understanding spatial variation in dissolved inorganic nitrogen (DIN) export to the coastal zone and specific basins have been studied in depth. Much less is known,… Expand
Life on the stoichiometric knife-edge: effects of high and low food C:P ratio on growth, feeding, and respiration in three Daphnia species
- J. Elser, M. Kyle, Jennifer Learned, Michelle L. McCrackin, A. Peace, Laura Steger
- 1 January 2016
Abstract Recently, data have emerged indicating that not only high food carbon:phosphorus (C:P) ratio but also low food C:P (P-rich food) can have negative effects on the growth of consumers. The… Expand
Denitrification kinetics and denitrifier abundances in sediments of lakes receiving atmospheric nitrogen deposition (Colorado, USA)
The transport and deposition of anthropogenic nitrogen (N) to downwind ecosystems is significant and can be a dominant source of new N to many watersheds. Bacterially mediated denitrification in lake… Expand
Greenhouse gas dynamics in lakes receiving atmospheric nitrogen deposition
 Anthropogenic nitrogen (N) inputs have been found to influence emissions of greenhouse gases from a variety of ecosystems; however, the effects of N loading on greenhouse gas dynamics in lakes… Expand