Knowledge for Change: A Decade of Citizen Science (2020–2030) in Support of the SDGs

In October 2020, the Museum für Naturkunde Berlin (MfN) with many partners, supported by the European Commission and the Federal Ministry of Education and Research (BMBF), held an international, hybrid conference in order to showcase, evaluate, and discuss the contribution of citizen science to frame and achieve the SDGs. The conference Knowledge for Change: A Decade of Citizen Science (2020-2030) in Support of the SDGs took place as an official event of Germany’s 2020 EU Council presidency. The SDGs are a scientifically based framework for the whole world to address hunger and malnutrition, health, environment as well as culture and justice, decided by the UN. Citizen Science, the contribution of lay people to scientific activities, may support the achievement of the SDGs – by providing data and insights, but also by adapting and prioritising research questions. Aim The conference presented, evaluated and discussed the exciting contributions that Citizen Science makes in framing and achieving sustainable development, specifically the UN SDGs. The conference brought together expertise from policy makers, institutional and citizen scientists, economists, NGOs and civil society to implement mechanisms and processes for the transition towards a more sustainable future. The Declaration A Declaration including policy recommendations resulted from the conference: "Our world – our goals: citizen science for the Sustainable Development Goals". The Declaration acts as a voluntary commitment by all partners to define the roles, competences and concrete potentials of Citizen Science to advance the SDGs. It was formulated in an open and participatory process. The Declaration groups the various important contributions of citizen science to the SDGs in three central recommendations: 1) Harness the benefits of citizen science for the SDGs, 2) strengthen citizen science and its connections with other communities, and 3) strengthen future citizen science systems

A global agenda for advancing freshwater biodiversity research

This manuscript is a contribution of the Alliance for Freshwater Life (www.allianceforfreshwaterlife.org). We thank Nick Bond, Lisa Bossenbroek, Lekima Copeland, Dean Jacobsen, Maria Cecilia Londo?o, David Lopez, Jaime Ricardo Garcia Marquez, Ketlhatlogile Mosepele, Nunia Thomas-Moko, Qiwei Wei and the authors of Living Waters: A Research Agenda for the Biodiversity of Inland and Coastal Waters for their contributions. We also thank Peter Thrall, Ian Harrison and two anonymous referees for their valuable comments that helped improve the manuscript. Open access funding enabled and organised by Projekt DEAL

From Late Miocene to Holocene: Processes of Differentiation within the Telestes Genus (Actinopterygii: Cyprinidae)

Investigating processes and timing of differentiation of organisms is critical in the understanding of the evolutionary mechanisms involved in microevolution, speciation, and macroevolution that generated the extant biodiversity. From this perspective, the Telestes genus is of special interest: the Telestes species have a wide distribution range across Europe (from the Danubian district to Mediterranean districts) and have not been prone to translocation. Molecular data (mtDNA: 1,232 bp including the entire Cyt b gene; nuclear genome: 11 microsatellites) were gathered from 34 populations of the Telestes genus, almost encompassing the entire geographic range. Using several phylogenetic and molecular dating methods interpreted in conjunction with paleoclimatic and geomorphologic evidence, we investigated the processes and timing of differentiation of the Telestes lineages. The observed genetic structure and diversity were largely congruent between mtDNA and microsatellites. The Messinian Salinity Crisis (Late Miocene) seems to have played a major role in the speciation processes of the genus. Focusing on T. souffia, a species occurring in the Danube and Rhone drainages, we were able to point out several specific events from the Pleistocene to the Holocene that have likely driven the differentiation and the historical demography of this taxon. This study provides support for an evolutionary history of dispersal and vicariance with unprecedented resolution for any freshwater fish in this region

Food niches of cyclopoid copepods in eutrophic Plußsee determined by stable isotope analysis

Feeding studies have suggested interspecific differences in the food sources and trophic position of cyclopoid copepod species. We measured δ13C and δ15N of five sympatric cyclopoid copepod species and of bulk POM from a eutrophic lake over a one-year period, to determine if stable isotope derived-data from the field supported the hypotheses from feeding studies. Cyclops abyssorum and C. vicinus differed significantly in δ15N but not in δ13C, inferring assimilation from similar carbon sources but differentiation in their trophic position. Cyclops abyssorum δ15N typically was 1– 2‰ higher than C. vicinus, suggesting a more predatory feeding mode compared to its congener. The summer species Mesocyclops leuckarti, Thermocyclops oithonoides and Diacyclops bicuspidatus exhibited considerable differences in δ13C. The lower δ13C of the hypolimnetic D. bicuspidatus compared to the two epilimnetic species indicates a food niche differentiation by vertical separation. All copepod δ13C and δ15N signatures showed seasonal fluctuations, with low values in winter and high values in summer. The δ13C of seston was generally higher than copepod δ13C. We regard selective feeding from the bulk POM, spatial separation of feeding and assimilation of 13C depleted food sources responsible for this phenomenon

Seasonal changes in the stable isotope values of lake-dwelling chironomid larvae in relation to feeding and life cycle variability

1. We studied seasonal changes in the carbon and nitrogen stable isotope ratios of larval Chironomus anthracinus and C. plumosus from the profundal sediments of four contrasting lakes. 2. Pronounced seasonal changes in both δ13C and δ15N values were evident in chironomid larvae of both species from two summer-stratified, eutrophic lakes: Esthwaite Water and Wyresdale Park. Changes were most marked in the larvae of C. plumosus and in larvae from greater depths. In contrast, neither C. anthracinus in summer-stratified but mesotrophic Schöhsee, nor C. plumosus in polymictic Großer Binnensee, showed marked seasonality in larval stable isotope ratios. 3. The particularly strong 13C-depletion of larvae from the stratified, eutrophic lakes is attributed to a significant contribution of methane-derived carbon to their diets. Feeding by larvae on isotopically light methanotrophic bacteria appears to occur mainly when autumn overturn of the water column restores oxygenated conditions to the sediment surface. At this time both δ13C and δ15N values of larvae decreased sharply. 4. Changes in the mean stable isotope ratio of the larval populations can also occur when larger, more isotopically light, larvae pupate and emigrate from the population to hatch as imagos. This effect can induce seasonal changes in larval isotope values even in lakes in which there is no evidence of a significant involvement of methane-derived carbon in their diets. Variations in emergence patterns between species and between lakes may generate differences in the seasonal pattern of change in stable isotope ratios in larval populations. 5. Our results emphasise the importance of adequate seasonal sampling if stable isotope ratios are to be used as biomarkers to study the role of key groups, such as chironomid larvae, in the trophic structure of lakes

Vyzkum racionalnich dopravnich systemu pro zemedelstvi CR v podminkach platnosti legislativy EU.

Available from STL Prague, CZ / NTK - National Technical LibrarySIGLECZCzech Republi

Including the Introduction of Exotic Species in Life Cycle Impact Assessment: The Case of Inland Shipping

Contains fulltext : 122419.pdf (Publisher’s version ) (Closed access

Threatening processes and conservation management of endemic freshwater fish in the Mediterranean basin: A review

Mediterranean endemic freshwater fish are among the most threatened biota in the world. The Mediterranean basin has experienced substantial reductions in precipitation and water availability, which will worsen with climate change. Current water policy is directed to increase water-supply demands, especially for agriculture, and not to improve water-use efficiency and implement integrated and sustainable water management. Illegal extractions are common, exacerbating problems for important protected areas. Management is needed to mitigate the conflicts between environmental water and human demand, and ensure availability of water to maintain ecological processes and Mediterranean freshwater biodiversity. Water availability is not the only threat, although it is exacerbated by pollution and invasive species. The uneven spatial distribution of threats across the Mediterranean basin requires different strategies to conserve freshwater biodiversity. Implementation of multi-national laws (e.g. Water Framework Directive in the European Union) will help future management of freshwater ecosystems. Management actions must be planned at whole-catchment scales, with collaboration among different countries and water-management authorities. The current reserve area is small compared with other areas in the world and driven by terrestrial interests, and should be evaluated for its effectiveness to protect the Mediterranean freshwater biodiversity