Was pike on the menu? Exploring the role of freshwater fish in medieval England

Historical sources report that some species of freshwater fish were considered luxury food items in England during the Middle Ages. The high retail price associated with species such as pike, salmon and sturgeon, as well as restrictions of fishing rights on rivers, estuaries and natural and artificial ponds, proves their exclusivity and role as symbols of social privilege. In this work, the zooarchaeological evidence from 11 English sites dated between the 11th and the 15th c. AD is discussed. This paper explores the differences between the ranges of freshwater species recovered from different site types, by looking at specific features that could define these fishes as luxury items: in particular, species selection and fish size are investigated as potentially meaningful variables. The size of fish will be used as an indicator of status and interpreted in view of the increasing phenomenon of fishing from artificial fishponds.

Strategi Pemberdayaan Masyarakat di Masa Pandemi melalui Program Peduli Dampak Corona (APDC) di LAZ Dompet Dhuafa Cabang Malang

This study intends to provide a formulation of community empowerment strategies during the pandemic which is carried out by the Malang branch of the Dompet Dhu'afa zakat institution. So far, every zakat institution has focused programs on the community (not only mustahik), but the program is only sudden and not programmed. However, the community empowerment strategy carried out by Dompet Dhu'afa was very effective because it was followed by an accurate management pattern, proportional-based programs and economic development. This is important to research, considering that a community empowerment strategy has not been formulated which has become a national pilot in the midst of a weakening world economy. This research is a descriptive qualitative study with a phenomenological approach to social institutions. All data are primary and extracted based on interview and documentation guidelines, in the final stage it is presented after going through the triangulation process. From the results of this study, several important things were found, namely the implementation of the Aksi peduli Dampak Corona program (APDC) during the Covid-19 pandemic, namely: 1) fish farming in artificial ponds, a freshwater fish cultivation program managed directly by the surrounding community. using artificial pond media, 2) Empowered Farmers are farming activities in the form of local vegetables and fruits which are commodities in the Malang region. Which in turn is managed directly by the surrounding community and directly supervised by experts from planting, maintenance, harvesting, to marketing, 3) Animal husbandry is one of the Corona Impact Care Action movements, here Dompet Dhuafa East Java presents approximately 30 sheep to be managed by surrounding communities affected by this pandemic as well as the stock for distributing the Sacrificial Animal Spread program next year.

Liquid fuel production via supercritical water gasification of algae: a role for solar heat integration?

Algal biomass is an attractive feedstock for carbon-neutral fuel production due to high growth rates and its potential to be farmed in artificial ponds on non-arable land. Supercritical water gasification...

Geospatial Assessment of the State of the Samara River Floodplain in the Area of Coal Mining in Western Donbas

The discharge of highly mineralized mine waters of the Western Donbass negativelyaffected the Samara Bay area, which is of great fishery importance. Mine water storage pondswere built in deep erosional cuts in the territories of mine fields in the gullies of Kosminnaya,Taranova, Glinyana and Svidovok. The screening of the bottoms was not performed in any pond.The soils that make up the bottom are not aquicludes, which contributes to intensive filtration ofmine waters and pollution of aquifers. Artificial ponds built without waterproofing of bottoms,rock dumps, mine water discharge routes and other sources of pollution are actively involved inthe zone of influence of mine drainage and worsen the quality of drinking water, the reserves ofwhich in the Western Donbass are limited. There is flooding and flooding by groundwater, as wellas increasing (compared to the period before the violations) areas of land temporarily floodedduring floods on rivers in the valleys of the rivers Samara, Velyka Ternivka and such large beamsas Svydovok, Taranova, Kosminna due to subsidence of the earth’s surface. Differences in theconditions of formation of mine waters determine the nature and degree of their impact on theenvironment. The main difficulties making complicated accurate comparison between calculatedand field data in Samara river floodplain are following: a) changes in parameters of mining andpumping rates of water used for local needs; b) hydrological changes including formation ofnew channels, bed deformation; c) transformation of the monitoring network; d) increasing leakagethrough the clayey bottom of the ponds. The main objective is to provide a comprehensivegeo-ecological assessment of the state of the Samara river floodplain in the area of coal miningin the Western Donbass. Multispectral imagery of Sentinel-2 satellite system was used for remoteassessment within the study area. Geomorphologic assessment of the studied area was performedusing Sentinel-1 satellite radar interferometry. Flooding of the territory is observed due to minedrainage and subsidence of the earth’s surface. The risk of salinization of soils under the conditionsof water use from the beam “Glynyana” and from the Samara river is estimated as insignificant,from the beam “Kosminna” ‒ average. The SAR value of mine waters in “Taranova” and“Svydovok” beams corresponds to a high level of salinity. Samara river waters belong to the 3rdclass and are characterized as highly mineralized, sometimes unsuitable for irrigation. Intensivenatural overgrowth of the mine dumps that have passed the stage of mining reclamation has beenrecorded near the “Heroyiv of Space”, “Pavlogradska” and “Samarska” mines. The rate of selfgrowthof the land cover around the mine “Ternovska” and “Blagodatna” is estimated as average.The self-healing levels of the “Ternovska” and “Blagodatna West Donbasska” mines are ratedfrom low to high. The greatest risk of salinization of soils under conditions of use of water forirrigation is possible at a fence from artificial ponds located in Taranov’s and Svidovok’s beams.The conturs of “Verbsky”, “Ternivsky”, “Bogdanovsky” and “Boguslavskiy” piscicultural pondscan be corrected with map of remote sensing of Samara river floodplain geomorphology. The dataobtained can be useful during development of econetwork of promising ecological corridors inthe floodplain part of the Samara River as well..

Conservation genomics of the threatened western spadefoot, Spea hammondii, in urbanized southern California

Populations of the western spadefoot (Spea hammondii) in southern California occur in one of the most urbanized and fragmented landscapes on the planet and have lost up to 80% of their native habitat. Orange County is one of the last strongholds for this pond-breeding amphibian in the region, and ongoing restoration efforts targeting S. hammondii have involved habitat protection and the construction of artificial breeding ponds. These efforts have successfully increased breeding activity, but genetic characterization of the populations, including estimates of effective population size and admixture between the gene pools of constructed artificial and natural ponds, has never been undertaken. Using thousands of genome-wide single-nucleotide polymorphisms, we characterized the population structure, genetic diversity, and genetic connectivity of spadefoots in Orange County to guide ongoing and future management efforts. We identified at least two, and possibly three major genetic clusters, with additional substructure within clusters indicating that individual ponds are often genetically distinct. Estimates of landscape resistance suggest that ponds on either side of the Los Angeles Basin were likely interconnected historically but intense urban development has rendered them essentially isolated, and the resulting risk of interruption to natural metapopulation dynamics appears to be high. Resistance surfaces show that the existing artificial ponds were well-placed and connected to natural populations by low-resistance corridors. Toad samples from all ponds (natural and artificial) returned extremely low estimates of effective population size, possibly due to a bottleneck caused by a recent multi-year drought. Management efforts should focus on maintaining gene flow among natural and artificial ponds by both assisted migration and construction of new ponds to bolster the existing pond network in the region.