20 documents found, page 1 of 2
The global EPTO database: Worldwide occurrences of aquatic insects
Grigoropoulou, Afroditi; Hamid, Suhaila Ab; Acosta, Raúl; Akindele, Emmanuel Olusegun; Al‐Shami, Salman A.; Altermatt, Florian; Amatulli, GiuseppeMotivation: Aquatic insects comprise 64% of freshwater animal diversity and are widely used as bioindicators to assess water quality impairment and freshwater ecosystem health, as well as to test ecological hypotheses. Despite their importance, a comprehensive, global database of aquatic insect occurrences for mapping freshwater biodiversity in macroecological studies and applied freshwater research is missing....
Fish and macroinvertebrate assemblages reveal extensive degradation of the worl...
Feio, Maria João; Hughes, Robert M.; Serra, Sónia R. Q.; Nichols, Susan J.; Kefford, Ben J.; Lintermans, Mark; Robinson, Wayne; Odume, Oghenekaro N.Rivers suffer from multiple stressors acting simultaneously on their biota, but the consequences are poorly quantified at the global scale. We evaluated the biological condition of rivers globally, including the largest proportion of countries from the Global South published to date. We gathered macroinvertebrate- and fish-based assessments from 72,275 and 37,676 sites, respectively, from 64 study regions acros...
Global concerns related to water biology and security: The need for language an...
Hughes, Robert M.; Karr, James R.; Vadas, Robert L.; DellaSala, Dominick A.; Callisto, Marcos; Feio, Maria João; Ferreira, Teresa; Kleynhans, NeelsIncreasingly, scientists and non-scientists, especially employees of government agencies, tend to use weak or equivocal language when making statements related to science policy and governmental regulation. We use recent publications to provide examples of vague language versus examples of strong language when authors write about regulating anthropogenic pressures on natural resources. Lifeless language is comm...
Pervasive gaps in Amazonian ecological research
Carvalho, Raquel L.; Resende, Angelica F.; Barlow, Jos; França, Filipe M.; Moura, Mario R.; Maciel, Rafaella; Alves-Martins, Fernanda; Shutt, JackBiodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain underst...
Impacts of detritivore diversity loss on instream decomposition are greatest in...
Boyero, Luz; López-Rojo, Naiara; Tonin, Alan M.; Pérez, Javier; Correa-Araneda, Francisco; Pearson, Richard G.; Bosch, Jaime; Albariño, Ricardo J.The relationship between detritivore diversity and decomposition can provide information on how biogeochemical cycles are affected by ongoing rates of extinction, but such evidence has come mostly from local studies and microcosm experiments. We conducted a globally distributed experiment (38 streams across 23 countries in 6 continents) using standardised methods to test the hypothesis that detritivore diversit...
The Biological Assessment and Rehabilitation of the World’s Rivers: An Overview
Feio, Maria João; Hughes, Robert M.; Callisto, Marcos; Nichols, Susan J.; Odume, Oghenekaro N.; Quintella, Bernardo R.; Kuemmerlen, MathiasThe biological assessment of rivers i.e., their assessment through use of aquatic assemblages, integrates the effects of multiple-stressors on these systems over time and is essential to evaluate ecosystem condition and establish recovery measures. It has been undertaken in many countries since the 1990s, but not globally. And where national or multi-national monitoring networks have gathered large amounts of d...
Latitude dictates plant diversity effects on instream decomposition
Boyero, Luz; Pérez, Javier; López-Rojo, Naiara; Tonin, Alan M.; Correa-Araneda, Francisco; Pearson, Richard G.; Bosch, Jaime; Albariño, Ricardo J.Running waters contribute substantially to global carbon fluxes through decomposition of terrestrial plant litter by aquatic microorganisms and detritivores. Diversity of this litter may influence instream decomposition globally in ways that are not yet understood. We investigated latitudinal differences in decomposition of litter mixtures of low and high functional diversity in 40 streams on 6 continents and s...
The biological assessment and rehabilitation of the world's rivers: An overview
Feio, Maria João; Hughes, Robert M.; Callisto, Marcos; Nichols, Susan J.; Odume, Oghenekaro; Quintella, Bernardo R.; Kuemmerlen, MathiasThe biological assessment of rivers i.e., their assessment through use of aquatic assemblages, integrates the effects of multiple-stressors on these systems over time and is essential to evaluate ecosystem condition and establish recovery measures. It has been undertaken in many countries since the 1990s, but not globally. And where national or multi-national monitoring networks have gathered large amounts of d...
Thresholds of freshwater biodiversity in response to riparian vegetation loss i...
Dala-Corte, Renato B.; Melo, Adriano S.; Siqueira, Tadeu [UNESP]; Bini, Luis M.; Martins, Renato T.; Cunico, Almir M.; Pes, Ana M.Made available in DSpace on 2020-12-12T02:42:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-07-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Protecting riparian vegetation around streams is vital in reducing the detrimental effects of environmental change on freshwater ecosystems and in maintaining aquati...
A comparative analysis reveals weak relationships between ecological factors an...
Heino, Jani; Melo, Adriano Sanches; Bini, Luis Mauricio; Altermatt, Florian; Al-Shami, Salman Abdo; Angeler, David G.; Bonada, Núria; Brand, CeciliaThe hypotheses that beta diversity should increase with decreasing latitude and increase with spatial extent of a region have rarely been tested based on a comparative analysis of multiple datasets, and no such study has focused on stream insects. We first assessed how well variability in beta diversity of stream insect metacommunities is predicted by insect group, latitude, spatial extent, altitudinal range, a...