scholarly journals [Red-crested pochard, Netta rufina, breeding population in Piedmont (North Western Italy)]

2021 ◽  
Vol 90 (2) ◽  
Author(s):  
Carlo Nebbia ◽  
Alessandria Gianfranco

[The breeding of the Red-crested pochard in Piedmont is known since 2006, when it was first described in a pond near the town of Asti. Data were collected from specific databases and from field observations performed in 3 sites located in the Asti province and 2 sites in the Cuneo province, all of them placed along the Tanaro riversides. A further site is located in the province of Alessandria near the Po river along the border of Lombardy. On the whole, in the time span 2006-2019 the number of breeding pairs increased from 2 to a maximum of 7 per year. A total of 64 females with 326 chicks were recorded (average 5.1/female), June being the most favorable month for reproduction. Results point to the occurrence of a seemingly stable small breeding population. The lack of any kind of legal site protection, the anthropogenic disturbance (hunting, fishing, abandoning wastes), and the loss of the ideal habitat for reproduction are among the critical threats for the maintenance of a vital breeding population. There was a probable case of nest parasitism by Mallard duck, which is seldom observed since the opposite situation seems to be more common.]   [Article in Italian]

2013 ◽  
Vol 3 (1) ◽  
pp. 11
Author(s):  
Martha V. Maldonado Bracamontes ◽  
Gerardo Carreón Arroyo ◽  
Isaias Ochoa Gutiérrez

AbstractParnell’s mustached bat, Pteronotus parnellii, is found from southern Sonora and Tamaulipas to Chiapas in Mexico. On October 3, 2012, at 18:30 hr, six and nine-meter nets were placed above water ponds in the Babisal creek located in the “Northern Jaguar Reserve” near the town of Sahuaripa. At 19:50 hrs the six-meter net was checked, and an adult male, without scrotum, of the species Pteronotus parnellii was found at a height of 70cm above ground level. The Sahuaripa region in east-central Sonora, is outside the known distribution range of this species extending it by at least 220 km north of the Sierra de Alamos. The “Northern Jaguar Reserve” where Pteronotus parnellii was found, is a protected area and an important wilderness area for the protection of the northernmost breeding population of jaguars. Key words: Pteronotus parnellii, Reserva Jaguar del Norte, Sonora, october. Palabras clave: Pteronotus parnellii, Reserva Jaguar del Norte, Sonora, octubre.


2016 ◽  
Vol 85 (2) ◽  
pp. 29
Author(s):  
Paolo Marotto

Black kites used the biggest waste dump of Turin for trophic purposes also during their reproductive months. After the dump closure there has been a sudden decrease in breeding pairs all over the area. During the following years the number of nests settled again however the small colonies trend was more scattered than before the landfill was closed.


1950 ◽  
Vol 31 (3) ◽  
pp. 79-84 ◽  
Author(s):  
C. M. Cross

The behavior of slope and valley winds near the town of Trail in the Columbia River valley system in southern British Columbia was studied, and the results compared with those obtained from similar studies made in the Alps. The hourly wind velocities for two stations—one in the main valley, the other in a side valley—were resolved into components parallel to and at right angles to the valley. This procedure gives the valley and slope winds respectively. The usual diurnal wind pattern was found to prevail in most instances, with up-slope and up-valley winds during the day, and down-slope and down-valley winds at night. These systems were much better developed during the summer than in winter, and approximated the ideal pattern more closely on sunny days when the overall pressure gradient was weak.


Author(s):  
Maciej J. Nowak

The Goleniów Municipality is situated in the North-Western part of Poland, 35 km from Szczecin and 65 km from Świnoujście. Its total area is 444 km2. The population of the town of Goleniów is about 23,000 inhabitants, and the population of the municipality altogether is about 33,000. It is an industryagricultural municipality, with a domination of the furniture and wood processing, cardboard and tin packages, chemical, textile and food branches. The Goleniów Industrial Park (GIP) is a fully developed area of 305 ha, designed to suit the needs of industrial production and services. In the GIP, a Special Economic Zone is located, which is a subzone of the Kostrzyń-Słubice Special Economic Zone. A very important part of the spatial policy is disposal of commune estates.


2020 ◽  
Vol 19 (3) ◽  
pp. 58-69
Author(s):  
Sergey V. Gorokhov

Purpose. In the course of archaeological research of Russian ostrogs (wooden fortresses) in Siberia, which belong to the end of the 16th – the first half of the 18th centuries, researchers come across remains of defensive fortifications, interpretation of which is rather complicated. Such remains include traces of continuous pile and column foundations of ostrog towers. The objective of this article is to identify all known structures of this type, determine essential elements of their construction and discover the functional purpose of such a foundation. Results. In the course of archаeological research, four towers with continuous pile and column foundation were discovered, namely, a south-western tower of Umrevinskii Ostrog, one of Tobolsk towers, a south-eastern tower and a north-western tower of Udinskii Ostrog. Information on discovery of towers with such a foundation in Mangazeya was not confirmed. The existence of such a foundation under the western tower of the Sosnovskii Ostrog remains disputable. One of such towers preserved its original foundation in the town of Bel’sk (Irkutsk region) till 1987. Three towers with continuous pile and column foundations were discovered in Krasnoyarskii Ostrog in written sources. Conclusion. It is determined that all towers were located on the slope or next to it, their dimensions were considerably smaller than average ones, while their depth and thickness of logs were equal and met the same parameters of the lath fence walls. Such towers were intended first for reducing a load on unstable grounds on the slopes and next to them at the expense of small sizes of towers and secondly for preventing uneven subsidence of the tower bases, which due to a small perimeter thereof can result in a considerable lurch and subsequent collapse or damage of the structural integrity of the building.


Geofizika ◽  
2021 ◽  
Vol 38 (1) ◽  
pp. 37-59
Author(s):  
Marijan Herak ◽  
Davorka Herak ◽  
Iva Vrkić ◽  
Mladen Živčić

Analyses of available data (newspaper reports, historical and church chronicles, chronical earthquake overviews, travel books, monographies, research papers, etc.) on effects of the earthquakes that shook the greater Ormož area at the Slovenian-Croatian border in the 1838 and 1839 revealed that one of them, recorded in a number of regional and global catalogues, is in fact a fake - the earthquake of 26 August 1838 never happened. This error creeped into various reports and studies, and then into many relevant catalogues, so this event should by systematically erased from the catalogues used to estimate seismicity rates in the neighbourhoods of north-western Croatia, north-eastern Slovenia, and south-western Hungary.Regarding the earthquake of 31 July 1838, we used important new sources of information that have not been consulted in any previous study. This made inversion of macroseismic parameters more robust. Our estimates of the macroseismic moment magnitude (Mwm = 4.8) is mostly higher than the values reported in the available catalogues. Reliable information on the effects of the smaller event of 22 March 1839 were found for two localities only, so its epicentre was placed into the town of Ormož where the maximum intensity was observed. Its estimated moment magnitude (Mwm) is close to the median of values found in the six consulted catalogues that listed this event.The macroseismic epicentre of the 1838 earthquake lies close to the junction of surface traces of the Donat strike-slip fault and the reverse Čakovec fault. Based on their assumed geometry and the location of the macroseismic hypocentre, we give slight preference to the Donat fault as the seismogenic source.


1998 ◽  
Vol 78 (3) ◽  
pp. 1035-1038 ◽  
Author(s):  
Jakov Dulčić

The capture of the cornich blackfish, Schedophilus medusophagus, larvae from the Adriatic Sea represents an easterly extension in range of this species, and the first larval record in Adriatic waters.Schedophilus medusophagus Cocco, 1839, is a mesopelagic species from temperate waters of the north-eastern and north-western Atlantic and the western Mediterranean (Bini, 1968; Tortonese, 1975; Haedrich, 1986). The first record of this fish from the Adriatic Sea was reported in 1880 according to Ninni (1912). The second record was during the invasion of medusae Pelagia noctiluca (Malej, 1982; Rottini-Sandrini & Stravisi, 1982; Vučetić, 1982,1983) in Pelješac channel near the town of Korčula-island Koršula (central Adriatic) in 1982 (Onofri, 1986). Ten juvenile specimens, from 10·0 to 20·0cm total length (TL), were collected with medusae at 2m depth. This record Onofri (1986) connected with the ingression of inter-median waters (50–100 m) in the central Adriatic influenced the increase of salinity and temperature in 1982. Jardas (1996) noted that S. medusophagus is a very rare species in the Adriatic Sea.


2010 ◽  
Vol 17 (1) ◽  
pp. 19-22 ◽  
Author(s):  
Maria Krzakowa ◽  
Marcin Michalak

Genetic differentiation of common reed (Phragmites australis) populations from selected lakes of Pomerania (NW Poland), revealed by electrophoretically detected peroxidase variabilityThree populations of common reed (Phragmites australis(Cav) Trin. ex Steud.), growing under differing edaphic conditions in lakes near the town of Koszalin (the Pomerania region in north-western Poland), were studied in respect to frequencies of electrophoretically detected allozymes in two peroxidase loci: a monomeric locus with three alleles and a dimeric locus with two alleles. On the basis of genetic distances, similarity between these populations and levels of variation were assessed both within populations (GST = 0.0376) and between populations (DST = 0.0194). Gene flow between populations was low (Nm= 6.399).


2000 ◽  
Vol 79 (6) ◽  
pp. 697-702 ◽  
Author(s):  
K. G. Ioannides ◽  
K. C. Stamoulis ◽  
C. A. Papachristodoulou

Genetika ◽  
2018 ◽  
Vol 50 (1) ◽  
pp. 253-259
Author(s):  
Biljana Rogic ◽  
Bozo Vazic ◽  
Djordje Sarajlic

The Lipizzan horse belongs to the oldest European horse breeds. In the year 1946 the Bosnian Lipizzan state stud farm Vucijak, located next to the town Prnjavor, was founded. The foundation stock originated from the Croatian state stud farms Lipik and Djakovo, and from private owners in Croatia. The breeding goal of Vucijak was to obtain a Lipizzan horse of a smaller body frame suitable for driving and the use as pack horses. The aim of this study was to compare anatomical body measurements of the founder animals with measurements of actual breeding population. From in total 41 horses (10 stallions and 31 mares) following body measurements were taken: height at withers (measured by tape), circumference of chest and circumference of cannon bone forelimb. All horses was 4 years or older at the time of measuring. In order to compare the actual breeding population with the foundation population we extracted comparable data of 17 stallions and 36 mares from the stud book. On the basis of the morphological measures, compactness and bonines index were calculated. The results showed that today's Lipizzan horse of the Vucijak stud are smaller in height at whiters and circumference of chest, while the circumference of cannon bone is larger than documented for founders. The t-test showed a statistically significant difference in the height at whiters and circumference of cannon bone. On the basis of the obtained results, it can be concluded that today's Lipizzan from the Bosnian stud farm Vucijak have a smaller body frame, which confirmed selection success.


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