21 documents found, page 1 of 3
Reproductive traits of the European catfish, Silurus glanis, during the early s...
Gkenas, C.; Sequeira, V.; Ribeiro, D.; Gago, João; Dias, D.; Verma, C.R.; Kumkar, P.; Ribeiro, F.In recent decades, the European catfish Silurus glanis has spread across Europe and elsewhere, significantly impacting the native fauna of the recipient ecosystems. Studies on its reproductive traits from its non-native range are limited, although this is a critical step in developing effective management plans. Here, we explore the reproductive characteristics of invasive European catfish populations in the Lo...
Westwards expansion of the European catfish Silurus glanis in the Douro River (...
Gkenas, C.; Martelo, J.; Ribeiro, D.; Gago, João; Santos, G.; Dias, D.; Ribeiro, F.The current study reports the first occurrence and the spread of the European catfish Silurus glanis (Family: Siluridae) in the Portuguese section of the Douro River, suggesting a potential expansion of its distribution in Portugal either via westward dispersal across international rivers and/or human-assisted introductions into new reservoirs and drainages. The European catfish has unique features (e.g., oppor...
Local environment and fragmentation by drought and damming shape different comp...
Martelo, J.; Gkenas, C.; Ribeiro, D.; Alves, M.J.; Ribeiro, F.; Cucherousset, J.; Gago, João; Magalhães, M.F.Pool refuges are critical for maintaining stream fish diversity in increasingly intermittent streams. Yet, the patterns and drivers of beta diversity of native and non-native fish in pool refuges remain poorly known. Focusing on Mediterranean streams, we decomposed beta diversity of native and non-native fish into richness difference (RichDiff) and species replacement (Repl), and local (LCBD, LCBDRichDiff and L...
Angler’s preferences, perceptions and practices regarding non-native freshwater...
Banha, F.; Gago, João; Margalejo, D.; Feijão, J.; Casals, F.; Anastácio, P.M.; Ribeiro, F.It is globally recognized that freshwater anglers can have a decisive role in promoting fish introductions. The aim of this study was to analyze fresh water anglers’ actions and perceptions regarding fish introductions, comparing two distinct situations, one with recently arrived non-natives fishes and another with older fish introductions, using the Iberian Peninsula as a case study. To achieve this goal, a bi...
Local environment and fragmentation by drought and damming shape different comp...
Martelo, Joana; Gkenas, Christos; Ribeiro, Diogo; Alves, Maria Judite; Ribeiro, Filipe; Cucherousset, Julien; Gago, João; Magalhaes, Maria FilomenaPool refuges are critical for maintaining stream fish diversity in increasingly intermittent streams. Yet, the patterns and drivers of beta diversity of native and non-native fish in pool refuges remain poorly known. Focusing on Mediterranean streams, we decomposed beta diversity of native and non-native fish into richness difference (RichDiff) and species replacement (Repl), and local (LCBD, LCBDRichDiff and L...
SPIN – Sustainable ProteIN
Dias, Igor; Ribeiro, Ana Teresa; Raimundo, António; Neves, Ana; Amaral, Artur; Mira, Helena; Gago, João; Ruivo, Paula Lúcia; Alvarenga, NunoDe acordo com a FAO (2022), os desafios societários emergentes revelam que a produção de géneros alimentícios terá de aumentar em 60%, até 2050, de modo a satisfazer as necessidades nutricionais de uma população superior a 9 mil milhões de habitantes. É necessário minimizar o desperdício alimentar, incrementar a produção de géneros alimentícios saudáveis e sustentáveis, com enfoque na preservação dos ecossistem...
Fish communities in the lower Tagus inland wetlands: from anthropogenic pressur...
Ribeiro, Diogo; Dias, Diogo; Santos, Gil; Gago, João; Serrano, Beatriz; Almeida, Luís; Martelo, Joana; Costa, Luís M.; Ribeiro, Filipe; Catalão, JoãoInland wetlands are important biodiversity hotspots and amongst the most impacted ecosystems worldwide. Conservation management and restauration actions in wetlands are thus urgently needed to reverse trends in species loss and habitat degradation, particularly in regions harbouring already endangered endemic species. Inland wetlands may play an important role in supporting endemic endangered fishes in the Lowe...
Historical food-web changes in invaded fish communities in the lower Guadiana b...
Gkenas, Christos; Martelo, Joana; Cucherousset, Julien; Ribeiro, Filipe; Gago, João; Alves, Maria Judite; Ribeiro, Diogo; Cheoo, GiselaFreshwater ecosystems are increasingly being reshaped by biological invasions, leading to biotic homogenization and biodiversity loss. However, the extent to which novel species may drive changes in food-web structure over time remains poorly understood. Clarifying changes in historical ecological processes is critical to inform conservation and restoration efforts in recipient ecosystems. Here, we address food...
Evaluating the range expansion of recreational non-native fishes in Portuguese ...
Martelo, J.; Costa, L. M.; Ribeiro, D.; Gago, João; Magalhães, M. F.; Gante, H. F.; Alves, M. J.; Cheoo, G.; Gkenas, C.; Banha, F.; Gama, M.Updating information on the distribution of recently introduced and other poorly known non-natives is essential to prevent and control their spread and better address biological invasions. Here, we combine scientific and citizen science data to update the distribution of five recently arrived (i.e., < 25 years), non-native fish species (Alburnus alburnus, Ameiurus melas, Rutilus rutilus, Sander lucioperca and S...
Variation in diet patterns of the invasive top predator Sander lucioperca (Linn...
Ribeiro, D.; Gkenas, C.; Gago, João; Ribeiro, F.The introduction of non-native species is recognized as a major threat to biodiversity, particularly in freshwater ecosystems. Pikeperch Sander lucioperca, is a recent invader to Portugal, primarily providing commercial and angling interest. The aim of this work was to study the diet of this top predator across Portuguese basins and to evaluate its potential impact on recipient ecosystems. In total, 256 pikeper...