<?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%">Gurtz, M. E.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Substrate-mediated response of stream invertebrates to disturbance.</style></title><secondary-title><style face="normal" font="default" size="100%">Ecology 65(5): 1556-1569</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%">1984</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://cwt33.ecology.uga.edu/publications/935.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%">The response of aquatic invertebrates to a major watershed disturbance, clear-cutting, was examined in a second-order stream. For 21 mo after the start of logging, invertebrates were sampled in four substrate types: rock face, cobble riffles, pebble riffles, and sand. More taxa increased in density (compared with a nearby reference stream) in moss-covered rock face than in any other substrate; cobble riffles were next, followed by pebble riffles and sand.  Conversely, the number of taxa with significant reductions in density was highest for sand substrates. Among functional groups of insects, collector-gatherers and scrapers increased, while the dominant shredder declined. The differential response of invertebrates among substrates suggests that biological stability is closely coupled with physical stability; however, moss associated with larger particles may be a factor in enhancing the biological stability.</style></abstract><accession-num><style face="normal" font="default" size="100%">LTER.1984-81092</style></accession-num></record></records></xml>