Journal ArticleDOI
What happens to allochthonous material that falls into streams? A synthesis of new and published information from Coweeta
Jackson R. Webster,Ernest F. Benfield,T. P. Ehrman,M. A. Schaeffer,Jennifer L. Tank,John J. Hutchens,D. J. D'Angelo +6 more
TLDR
The average respiration rate of FPOM was 1.4 mg O2 g AFDM -1 day -1 over a temperature range of 6-22 ∞C, which implies a decomposition rate of 0.00104 day 1 as discussed by the authors.Abstract:
SUMMARY 6. The average respiration rate of FPOM was 1.4 mg O2 g AFDM -1 day -1 over a temperature range of 6-22 ∞C, which implies a decomposition rate of 0.00104 day -1 . Transport distances of both corn pollen and glass beads, surrogates of natural FPOM, were short (< 10 m) except during high discharge. 7. Estimates of transport rate were substantially larger than the breakdown rates for sticks, leaves and FPOM. Thus, an organic particle on the stream bottom is more likely to be transported than broken down by biological processes, although estimates of turnover length suggest that sticks and leaves do not travel far. However, once these larger particles are converted to refractory FPOM, either by physical or biological processes, they may be transported long distances before being metabolized.read more
Citations
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Journal ArticleDOI
Understanding Processes and Downstream Linkages of Headwater Systems
Journal ArticleDOI
A review of allochthonous organic matter dynamics and metabolism in streams
Jennifer L. Tank,Emma J. Rosi-Marshall,Natalie A. Griffiths,Sally A. Entrekin,Mia L. Stephen +4 more
TL;DR: The role of allochthonous organic matter in lotic ecosystems has been an important research topic among aquatic ecologists since the seminal work by Lindeman was published in 1942 as mentioned in this paper.
Journal ArticleDOI
Contribution of stream detrivores, fungi, and bacteria to leaf breakdown based on biomass estimates
Mäggi Hieber,Mark O. Gessner +1 more
TL;DR: The contributions of bacteria, fungi, and detritivorous invertebrates (shredders) to leaf litter breakdown, a key ecosystem-level process, is assessed.
Journal ArticleDOI
A case for using litter breakdown to assess functional stream integrity
Mark O. Gessner,Eric Chauvet +1 more
TL;DR: In this article, a complementary approach to stream assessment based on evaluating ecosystem level processes is proposed, where leaf litter breakdown is a prime candidate to consider in this context, because of the pivotal role that allochthonous litter plays in streams, the demonstrated effects of anthropogenic perturbations on litter breakdown, and the relative ease of implementation.
Journal ArticleDOI
Hot Spots and Hot Moments in Riparian Zones: Potential for Improved Water Quality Management
Philippe Vidon,Craig J. Allan,Douglas A. Burns,Tim P. Duval,Noel P. Gurwick,Shreeram Inamdar,Richard Lowrance,Judy A. Okay,Durelle T. Scott,Stephen D. Sebestyen +9 more
TL;DR: In this article, a review summarizes current knowledge for phosphorus, organic matter, pesticides, and mercury across riparian zones and discusses the implications for riparian zone management of recognizing the importance of hot phenomena in annual solute budgets at the watershed scale.
References
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Book ChapterDOI
Ecology of Coarse Woody Debris in Temperate Ecosystems
Mark E. Harmon,Jerry F. Franklin,F. J. Swanson,P. Sollins,Stanley V. Gregory,John D. Lattin,N.H. Anderson,S.P. Cline,N.G. Aumen,James R. Sedell,G.W. Lienkaemper,Kermit Cromack,Kenneth W. Cummins +12 more
TL;DR: In this article, the authors reviewed the rates at which coarse wood debris is added and removed from ecosystems, the biomass found in streams and forests, and many functions that CWD serves.
Journal ArticleDOI
Vascular plant breakdown in freshwater ecosystems
TL;DR: While vascular plant leaves have received most attention in stream research, there is growing recognition that wood is also important and the direct contribution of wood to stream energy budgets is minimal because wood is resistant to breakdown.
Journal ArticleDOI
Energy Flow in Bear Brook, New Hampshire: An Integrative Approach to Stream Ecosystem Metabolism
Stuart G. Fisher,Gene E. Likens +1 more
TL;DR: In this paper, an energy budget for a small undisturbed second-order stream in northeastern United States is presented, in which all input and output fluxes of potential energy as organic matter are considered, and a conceptual scheme is presented by which import, export, photosynthesis and respiration may be used to describe the functional dynamics and developmental processes of ecosystems.
Journal ArticleDOI
Leaf processing in a woodland stream
TL;DR: Evidence suggests that differential invertebrate colonization of leaf packs is a function of microbial colonization and conditioning, and significant differences between fall and winter processing and between the two sites are not.
Journal ArticleDOI
Compositions and fluxes of particulate organic material in the Amazon River1
TL;DR: In this paper, Lignin, elemental, and stable carbon isotope compositions are reported for local plants and for coarse (>63 µm) and fine (<63 mm) suspended particulate materials collected along a 1,950 km reach of the lower Amazon River during four contrasting stages of the 1982-1983 hydrograph.