<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Vasconcellos, M.</style></author><author><style face="normal" font="default" size="100%">Mackinson, S.</style></author><author><style face="normal" font="default" size="100%">Sloman, K.</style></author><author><style face="normal" font="default" size="100%">Pauly, D.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">The stability of trophic mass-balance models of marine ecosystems: A comparative analysis</style></title><secondary-title><style face="normal" font="default" size="100%">Ecological Modelling</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Ecol. Model.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">D 04003 Modeling, mathematics, computer applications</style></keyword><keyword><style  face="normal" font="default" size="100%">D 04330</style></keyword><keyword><style  face="normal" font="default" size="100%">Detritus</style></keyword><keyword><style  face="normal" font="default" size="100%">DISTURBANCE</style></keyword><keyword><style  face="normal" font="default" size="100%">ecological balance</style></keyword><keyword><style  face="normal" font="default" size="100%">Ecology/Community Studies</style></keyword><keyword><style  face="normal" font="default" size="100%">ECOSYSTEM</style></keyword><keyword><style  face="normal" font="default" size="100%">Ecosystem resilience</style></keyword><keyword><style  face="normal" font="default" size="100%">ECOSYSTEMS</style></keyword><keyword><style  face="normal" font="default" size="100%">FISHERIES</style></keyword><keyword><style  face="normal" font="default" size="100%">marine</style></keyword><keyword><style  face="normal" font="default" size="100%">MARINE ECOSYSTEMS</style></keyword><keyword><style  face="normal" font="default" size="100%">Marine fisheries</style></keyword><keyword><style  face="normal" font="default" size="100%">MODELS</style></keyword><keyword><style  face="normal" font="default" size="100%">Nutrient cycles</style></keyword><keyword><style  face="normal" font="default" size="100%">O 1070</style></keyword><keyword><style  face="normal" font="default" size="100%">Q1 01482 Ecosystems and energetics</style></keyword><keyword><style  face="normal" font="default" size="100%">STABILITY</style></keyword><keyword><style  face="normal" font="default" size="100%">trophic levels</style></keyword><keyword><style  face="normal" font="default" size="100%">trophic structure</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1997</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Dec</style></date></pub-dates></dates><number><style face="normal" font="default" size="100%">1-3</style></number><volume><style face="normal" font="default" size="100%">100</style></volume><pages><style face="normal" font="default" size="100%">125-134</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Dynamic simulations of 18 ECOPATH mass-balance marine trophic models are used to explore the stability of systems when briefly impacted by a fishery on the key 'wasp-waist' populations occurring at intermediate trophic levels. The results are related to different ecosystem goal functions previously identified as representative of three attributes of ecosystems development: community complexity, homeostasis and energetics. System recovery time, the time required for all functional groups to returns to baseline level, and here used as a measure of model stability, was inversely correlated to Finn's Cycling Index, i.e. to the fraction of ecosystem throughput that is recycled, and to the mean length of trophic pathways in the systems. Systems with higher capacity to recycle detritus are systems with a higher ability to recover from perturbations. The results are in agreement with the E.P. Odum's theory of ecosystem development, where recycling is interpreted as a chief positive feedback mechanism that contributes to stability in the mature systems by preventing overshoots and destructive oscillations due to external impacts.</style></abstract><accession-num><style face="normal" font="default" size="100%">4332477</style></accession-num><notes><style face="normal" font="default" size="100%">English</style></notes><auth-address><style face="normal" font="default" size="100%">Fish. Cent., Univ. British Columbia, 2204 Main Mall, Vancouver, B.C., V6T 1Z4, Canada</style></auth-address></record></records></xml>