Coastal nitrogen pollution: a review of sources and trends globally and regionally

RW Howarth - Harmful algae, 2008 - Elsevier
The past few decades have seen a massive increase in coastal eutrophication globally,
leading to widespread hypoxia and anoxia, habitat degradation, alteration of food-web …

Effects of air pollution on ecosystems and biological diversity in the eastern United States

GM Lovett, TH Tear, DC Evers… - Annals of the New …, 2009 - Wiley Online Library
Conservation organizations have most often focused on land‐use change, climate change,
and invasive species as prime threats to biodiversity conservation. Although air pollution is …

The nitrogen cascade

JN Galloway, JD Aber, JW Erisman, SP Seitzinger… - Bioscience, 2003 - academic.oup.com
Human production of food and energy is the dominant continental process that breaks the
triple bond in molecular nitrogen (N2) and creates reactive nitrogen (Nr) species. Circulation …

Chronic nitrogen additions suppress decomposition and sequester soil carbon in temperate forests

SD Frey, S Ollinger, K Nadelhoffer, R Bowden… - Biogeochemistry, 2014 - Springer
The terrestrial biosphere sequesters up to a third of annual anthropogenic carbon dioxide
emissions, offsetting a substantial portion of greenhouse gas forcing of the climate system …

Nitrogen saturation in temperate forest ecosystems: hypotheses revisited

J Aber, W McDowell, K Nadelhoffer, A Magill… - …, 1998 - academic.oup.com
Nitrogen emissions to the at-mosphere due to human activity remain elevated in in-
dustrialized regions of the world and are accelerating in many developing regions (Galloway …

Microbial enzyme shifts explain litter decay responses to simulated nitrogen deposition

MM Carreiro, RL Sinsabaugh, DA Repert… - Ecology, 2000 - Wiley Online Library
Some natural ecosystems near industrialized and agricultural areas receive atmospheric
nitrogen inputs that are an order of magnitude greater than those presumed for preindustrial …

Use of nitrogen to phosphorus ratios in plant tissue as an indicator of nutrient limitation and nitrogen saturation

JT Tessier, DJ Raynal - Journal of Applied Ecology, 2003 - Wiley Online Library
Summary 1 Ratios of nitrogen to phosphorus (N: P) in plant foliage have been used to
assess nutrient limitation in wetland ecosystems and to indicate nitrogen saturation …

[图书][B] Forest ecosystems: analysis at multiple scales

RH Waring, SW Running - 2010 - books.google.com
This revision maintains the position of Forest Ecosystems as the one source for the latest
information on the advanced methods that have enhanced our understating of forest …

Anthropogenic nitrogen sources and relationships to riverine nitrogen export in the northeastern USA

EW Boyer, CL Goodale, NA Jaworski, RW Howarth - Biogeochemistry, 2002 - Springer
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 …

Effects of nitrogen deposition and empirical nitrogen critical loads for ecoregions of the United States

LH Pardo, ME Fenn, CL Goodale… - Ecological …, 2011 - Wiley Online Library
Human activity in the last century has led to a significant increase in nitrogen (N) emissions
and atmospheric deposition. This N deposition has reached a level that has caused or is …