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Freshwater macroinvertebrates play a crucial role in linking sediments and their processes to the food web. Indeed, environmental modifications (e.g., nitrogen deposition, salinity, and temperature increase), pollution (e.g., pesticides and heavy metals), and introduction of alien species are the main drivers of changes that are affecting their communities. This Special Issue aims to present the past and present knowledge on freshwater macroinvertebrates to understand their role as providers of ecosystem services, to highlight the effects of global changes on their community (in the short and long term), and to underline major gaps in their study. Finally, in order to tackle the currently unsustainable use of freshwater natural capital, we welcome ideas and expert opinions on the development of future research linked to national and international regulations.

Research & information: general --- Biology, life sciences --- biological quality element --- chemical analysis --- Chironomus riparius --- DDTs --- legacy contaminants --- PCBs --- POP --- standard ecotoxicological tests --- Water Framework Directive --- lakes --- invasion biology --- non-indigenous species --- Procambarus Clarkii --- Pacifastacus Leniusculus --- Orconectes Limosus --- snails --- endemic species --- invasive species --- random forest model --- multivariate analysis --- partial dependence analysis --- calcrete aquifer --- epikarst --- hyporheal --- hypotelminorheal --- stygobiont --- bioassessment --- temporal trend --- altitude --- climate --- insects --- grain-size --- sediment --- macroinvertebrates --- ecological status --- multimetric indices --- coevolution --- epizoosis --- grazing --- periphyton --- scrapers --- indices and metrics --- sediment quality --- St. Lawrence River --- highly humic lakes --- ecological status assessment --- saprobic index --- general degradation index

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Ranaviruses and other viruses within the family Iridoviridae, infect a wide range of ecologically and commercially important ectothermic vertebrates, i.e., bony fish, amphibians, and reptiles, and invertebrates, including agricultural and medical pests and cultured shrimp and crayfish, and are responsible for considerable morbidity and mortality. Understanding the impact of these various agents on diverse host species requires the combined efforts of ecologists, veterinarians, pathologists, comparative immunologists and molecular virologists. Unfortunately, investigators involved in these studies often work in discipline-specific silos that preclude interaction with others whose insights and approaches are required to comprehensively address problems related to ranavirus/iridovirus disease. Our intent here is to breakdown these silos and provide a forum where diverse researchers with a common interest in ranavirus/iridovirus biology can profitably interact. As a colleague once quipped, “Three people make a genius.” We are hoping to do something along those lines by presenting a collection of research articles dealing with issues of anti-viral immunity, identification of a potentially novel viral genus exemplified by erythrocytic necrosis virus, viral inhibition of innate immunity, identification of novel hosts for lymphocystivirus and invertebrate iridoviruses, and modelling studies of ranavirus transmission. Collectively these and others will exemplify the breadth of ongoing studies focused on this virus family.

risk assessment --- n/a --- CQIV --- mathematical models --- amphibian --- iridovirus --- ISDL --- Exopalaemon carinicauda --- viral load --- virus isolation --- European chub --- outbreak --- Unconventional T cell --- early detection --- susceptible species --- viral immune evasion --- DNA virus --- Rana grylio virus --- antibody --- intracellular localization --- Rana grylio virus (RGV) --- British Columbia --- Iridoviridae --- Andrias davidianus ranavirus --- viral infection --- susceptible-infected (SI) models --- yeast two-hybrid (Y2H) --- prevalence --- host-pathogen interactions --- Pacific herring --- Procambarus clarkii --- Bayesian inference --- eDNA --- amphibians --- Artemia spp. --- ranavirosis --- cross-species transmission --- FV3 --- SHIV --- Gryllus bimaculatus --- Pacific salmon --- NF-?B --- cricket --- IIV-6 --- virus binding --- erythrocytic necrosis virus (ENV) --- envelope protein --- iridovirus core proteins --- emerging infection --- host --- Ranavirus --- white head --- Rana temporaria --- Imd --- biosecurity --- antiviral immunity --- Decapodiridovirus --- endemic disease --- Macrobrachium rosenbergii --- co-immunoprecipitation (Co-IP) --- Common frog --- aquatic animals --- virus surveillance --- immunomodulators --- frog virus 3 --- ELISA --- DIV1 --- megalocytivirus --- Lymphocystis disease virus --- bearded dragon --- susceptibility --- protein interaction --- Pogona vitticeps --- viral erythrocytic necrosis (VEN) --- histopathology --- epidemiology --- native-fish conservation --- viral transmission --- Sparus aurata --- immunohistochemistry --- lizard --- disease dynamics --- immunofluorescence --- transmission modelling --- Macrobrachium nipponense --- interferon --- nonclassical MHC --- heparan sulfate --- ranavirus --- Mexico