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Biogeochemical cycling
The cycling of chemical constituents through a biological system.
Subtopics:
Carbon cycling (5 items)
Nutrient cycling (6 items)
Related topics:

Results 1 - 14 of 14 listed by similarity [list alphabetically]
Nutrient dynamics and biochemical cycling [More info]
Briefly describes research efforts to better understand nutrient dynamics and biogeochemical cycling in ecosystems and how these properties are altered by large-scale human activities.
Water, Energy, and Biogeochemical Budgets (WEBB) [More info]
Describes the studies of five small watersheds, four in the U.S. and one in Puerto Rico, under the WEBB program to understand the processes controlling water, energy, and biogeochemical fluxes with links to other watershed research.
PDF Assessing carbon stocks, carbon sequestration, and greenhouse-gas fluxes in ecosystems of the United States under present conditions and future scenarios [More info]
Congress asked us (in the Energy Independence and Security Act of 2007) to figure out how to assess the effects of carbon storage, sequestration, and greenhouse gas fluxes in our ecosystems. Here's how we plan to do that.
PDF Biochar for soil fertility and natural carbon sequestration [More info]
Explains what biochar is and how it is formed, its potential use in both fertilizer and carbon sequestration, and some of the research questions remaining to be addressed before we can utilize it fully in practical ways.
PDF Bryophytes and lichens, small but indispensable forest dwellers [More info]
Description of bryophytes (mosses, liverworts, and hornworts) and lichens (dual organisms of a fungus and an alga or a cyanobacterium) that are part of forest ecosystems in the Pacific Northwest with information on habitat and conservation.
Connectivity of tropical marine ecosystems--An overview of interdisciplinary research to understand biodiversity and trophic relationships in the Virgin Islands and Puerto Rico [More info]
Describes research to assess the effectiveness of the current system and distribution of marine reserves and protected areas in the Virgin Islands and Puerto Rico for conserving reef ecosystems and resources.
Maps of the distribution and occurrence of ground water quality constituents and early 1970's land use in New Jersey [More info]
Links to maps of New Jersey showing nitrate levels, pesticides, Total Volatile Organic Compounds (VOCs), and radium in wells and land use of the 1970s.
PDF Net Ecosystem Production (NEP) of the Great Plains, United States [More info]
Geographic analysis of the changes in storage and release of carbon in this large area as land use patterns, especially agriculture, have changed.
Pathways of metal transfer from mineralized sources to bioreceptors [More info]
A synthesis of the Mineral Resources Program's past and future research directions in the western U.S. on metal contamination due to mineral deposits and mining and the environmental effects on living organisms. Chapters 1, 4, and 6 as PDF files.
Potential effects of anthropogenic greenhouse gases on avian habitats and populations in the Northern Great Plains [More info]
Report on effects of the increase of atmospheric carbon dioxide on plants and animals, especially birds, in the Great Plains including effects of carbon dioxide fertilization, ultraviolet radiation, climate change, and harmful effects on bird habitats.
Recent changes in the food web of Lake Erie - the role of phosphorus and zebra mussels [More info]
Brief overview of the proliferation of zebra mussels and the role of phosphorus in Lake Erie with links to publications related to Lake Erie water quality.
PDF St. Petersburg Coastal and Marine Science Center coral reef research [More info]
Describes ecological problems facing coral reef ecosystems and the research strategies we use to study the prevalence and severity of those problems.
The carbon cycle in lakes of the Upper Mississippi Basin [More info]
Summary of part of the USGS interdivisional Mississippi Basin Carbon project that will study the changes in climate and the environment through carbon cycle changes recorded in lake sediments in the Upper Mississippi River Basin.
PDF Unearthing Secrets of the Forest [More info]
Understanding how carbon and nutrients cycle in forests (forest biogeochemistry) is crucial for evaluating productivity, composition, diversity and change in forests.
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