We compiled regional and continental data on inorganic nitrogen (N) in seepage and
surface water from temperate forests. Currently, N concentrations in forest waters are usually …

We reviewed the literature on the effects of land use changes on mediterranean river
ecosystems (med-rivers) to provide a foundation and directions for future research on …

Many mammalian peripheral tissues have circadian clocks,,,; endogenous oscillators that
generate transcriptional rhythms thought to be important for the daily timing of physiological …

N limitation to primary production and other ecosystem processes is widespread. To
understand the causes and distribution of N limitation, we must understand the controls of …

Some 60% of coastal rivers and bays in the US have been moderately to severely degraded
by nutrient pollution. Both nitrogen (N) and phosphorus (P) contribute to the problem …

Human activities have greatly altered the nitrogen (N) cycle, accelerating the rate of N
fixation in landscapes and delivery of N to water bodies. To examine relationships between …

Concern is resurfacing in the United States over the long-term effects of excess nitrogen (N)
deposition and mobility in the environment. We present here a new synthesis of existing …

Abstract Conceptual,,, and numerical,,, models of nitrogen cycling in temperate forests
assume that nitrogen is lost from these ecosystems predominantly by way of inorganic forms …

Dissolved organic carbon (DOC) is important in a wide variety of chemical, physical, and
biological processes in surface waters. We examined the relationship between DOC flux …

Environmental problems in coastal ecosystems can sometimes be attributed to excess
nutrients flowing from upstream watersheds into estuarine settings. This nutrient over …