Taxonomic Keys. To the Common Animals of the North Central States Exclusive of the Parasitic Worms, Insects and Birds.Samuel Eddy , A. C. Hodson

1951 ◽  
Vol 26 (2) ◽  
pp. 209-209
Author(s):  
Karl P. Schmidt
Copeia ◽  
1951 ◽  
Vol 1951 (4) ◽  
pp. 315
Author(s):  
Robert Rush Miller ◽  
Norman Hartweg ◽  
Samuel Eddy ◽  
A. C. Hodson

2021 ◽  
Vol 8 ◽  
Author(s):  
Enrico Nicola Armelloni ◽  
Martina Scanu ◽  
Francesco Masnadi ◽  
Gianpaolo Coro ◽  
Silvia Angelini ◽  
...  

Information on stock status is available only for a few of the species forming the catch assemblage of rapido fishery of the North-central Adriatic Sea (Mediterranean Sea). Species that are caught almost exclusively by this gear, either as target (such as Pectinidae) or accessory catches (such as flatfishes apart from the common sole), remain unassessed mainly due to the lack of data and biological information. Based on cluster analysis, the catch assemblage of this fishery was identified and assessed using CMSY model. The results of this data-poor methodology showed that, among the species analyzed, no one is sustainably exploited. The single-species CMSY results were used as input to an extension of the same model, to test the effect of four different harvest control rule (HCR) scenarios on the entire catch assemblage, through 15-years forecasts. The analysis showed that the percentage of the stocks that will reach Bmsy at the end of the projections will depend on the HCR applied. Forecasts showed that a reduction of 20% of fishing effort may permit to most of the target and accessory species of the rapido trawl fishery in the Adriatic Sea to recover to Bmsy levels within 15 years, also providing a slight increase in the expected catches.


2021 ◽  
Author(s):  
Marina Nikolova ◽  

Organic farming best meets the benchmarks set in the development of the Common Agricultural Policy after 2020, regarding the achievement of important goals related to economic efficiency, social responsibility and environmental protection. Therefore, the protection and restoration of biodiversity and natural ecosystems and the provision of sustainable food and production practices are key to our national economy. This requires the use of sustainable production models for effective management of the components of agricultural ecosystems, environmental protection and climate change. The focus of the study is on the regional specifics of an innovative agricultural model and its development potential for strengthening the socio-economic indicators in a specific region. The subject of the analysis is the characteristics of the organic production in the North Central Planning Region depending on the certified activities and the number of biological operators.


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