<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Wallace, J. B.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Export of fine organic particles from headwater streams: effects of season, extreme discharges, and invertebrate manipulation.</style></title><secondary-title><style face="normal" font="default" size="100%">Limnology and Oceanography 36(4): 670-682</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">CWT</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1991</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://cwt33.ecology.uga.edu/publications/293.pdf</style></url></web-urls></urls><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Export of fine particulate organic matter (FPOM) was measured from streams draining Catchments C53, C54, and C55 at Coweeta Hydrologic Laboratory for 5 yr, encompassing the driest and wettest years of the past 55-yr record.  Macroinvertebrate populations in C54 were reduced for 3 yr by seasonal treatments with insecticide. Macroinvertebrate reduction altered the magnitude of FPOM export during storms, the seasonal pattern of export, and the annual export of FPOM. During pesticide treatment, FPOM concentrations decreased abruptly, remained well below those of reference streams for the 3-yr treatment period, and then increased during the 1st yr of recovery. Macroinvertebrate reduction resulted in an estimated 170-200 kg loss in FPOM export during the 3 yr of treatment and 1st yr of recovery. Annual export of FPOM was strongly related to annual discharge, but the impact of biotic manipulation on FPOM export in C54 was at least as great as that produced by extreme high and low discharges.  More export per unit maximum discharge occurred in summer in reference streams and C54 in untreated years.  During treatment years, export per unit maximum discharge was lowest in summer at C54.  FPOM concentrations measured during storms showed increasing concentrations with increasing discharge in all streams; however, much more FPOM was suspended in the reference streams than in C54.</style></abstract><accession-num><style face="normal" font="default" size="100%">LTER.1991-80843</style></accession-num></record></records></xml>