The “biological pump” is the process by which photosynthetically-produced organic matter in
the ocean descends from the surface layer to depth by a combination of sinking particles …

The removal of nitrogen (N) in aquatic ecosystems is of great interest because excessive
nitrate in groundwater and surface water is a growing problem. High nitrate loading …

Stream Ecology: Structure and Function of Running Waters is designed to serve as a
textbook for advanced undergraduate and graduate students, and as a reference source for …

Crop-livestock production systems are the largest cause of human alteration of the global
nitrogen (N) and phosphorus (P) cycles. Our comprehensive spatially explicit inventory of N …

Each year ecotoxicological problems become increasingly complex and encompass
broader spatial and temporal scales. Our practical understanding must evolve accordingly to …

Abstract This global spatially explicit (0.5 by 0.5 degree) analysis presents the nitrogen (N)
and phosphorus (P) inputs, processing and biogeochemical retention and delivery to …

Aperpetual bestseller, this third edition remains the obvious choice for those instructors who
strive to make their teaching applicable to contemporary issues. The three authors, all …

Phosphorus (P) loss from agricultural fields and watersheds has been an important water
quality issue for decades because of the critical role P plays in eutrophication. Historically …

The extensive development of surface and subsurface drainage systems to facilitate
agricultural production throughout North America has significantly altered the hydrology of …

Dissolved oxygen concentration is a crucial organizing principle in marine ecosystems. As
oxygen levels decline, energy is increasingly diverted away from higher trophic levels into …