3 documents found, page 1 of 1
Early warning signals as indicators of cyclostationarity in three-species hiera...
Wouters, N.; Serafim, M.P.; Valayer, P.J.; Kirkup, B.C.; Wang, Y.J.; Cabral, HenriquePredicting stability from current ecosystem performance is theoretically difficult, but early statistical warning signals (EWS) may enable the anticipation of regime shifts. However, little is known regarding the behavior of EWS in shifts with cyclic dynamics. In this study, we use indicators to assess the stability of a three-species system in a competitive loop similar to a rock–paper–scissors (RPS) hierarchy...
Evidencing a regime shift in the North Sea using early-warning signals as indic...
Wouters, N.; Dakos, V.; Edwards, M.; Serafim, M.P.; Valayer, P.J.; Cabral, HenriqueOne of the longest marine monitoring programs in the North Sea has been the spatiotemporal surveying of subsurface plankton since 1931. During this period a regime shift was detected in the late 1980s culminating in marked changes in phytoplankton, zooplankton and in the fisheries of horse mackerel. Here we used the phytoplankton colour index, a visual biomass estimate, from 1948 to 2010 and total diatom abunda...
Criação e implementação de um sistema de monitorização no Litoral abrangido pel...
Andrade, C.; Antunes, C.; Branquinho, C.; Marques, F.; Cabral, H; Silva, J.; Freitas, M. C.; Correia, O.; Redweik, P.; Taborda, R.; Rosa, T.; Brotas, V.O presente relatório de progresso descreve o trabalho desenvolvido pelas equipas da Fundação da Faculdade de Ciências da Universidade de Lisboa (FFCUL) e do Laboratório Nacional de Engenharia Civil (LNEC) durante o quinto semestre do projecto “Consultoria para a Criação e Implementação de um Sistema de Monitorização do Litoral Abrangido pela Área de Jurisdição da ARH do Tejo”. São descritas as acções levadas a ...