Article 17 web tool

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: Methodik zur Ermittlung der Populationsgröße in EU-Einheit: Verschneidung der Vorkommenspunkt (Distribution) mit grids1x1 und Habitatmaskierung mit CorineLandCover-Klassen ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: In general most part of occupied habitat are god quality espatially on the Una River. However, some chemical negative trends are mesured for the River Kupica and several regulations were made.
Additionaly, during winter period is present pressure from cormorants, but until now that is not recognised as significant threat. ||
->Future: Future prospects of population are recognized as unknown because of artifitial stocking ina a part of range. It is unclear would be status of grayling without stocking. ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: The population estimate is provided as a range whose minimum and maximum values are thus calculated:
• Minimum: as the intersection between the 1x1km grid, the main hydrographic network and the species' 10x10km distribution.
• Maximum: as the intersection between the 1x1km grid, the whole hydrographic network (the main plus the secondary till the 3rd order) and the species' 10x10km distribution.

For the species of Thymallus occurring in Northern Italy, come autors argue that it has to be referred as Thymallus aeliani (Geiger M. F. et al., 2012; Meraner A. & Gandolfi A., 2012; Bianco, 2013; Bravničar et al., 2015; Dyldin et al., 2017). Haplotype of native representa¬tives of the genus Thymallus occurring in the Adriatic Sea basin from Northern Italy to the Western Slovenia is very different from all other transalpine members of the genus. According to molecular studies, the variation had occurred probably 4 million years ago Th.thymallus has red caudal fin, whereas blue caudal fin is typical for Thymallus aeliani (Dyldin et al., 2017).
The mixing of native Adriatic haplotypes with haplotypes of Atlantic Origin (alloctonous) has been mostly caused by restocking activities. Today pure Adriatic grayling populations seem to resist in Val Sesia basin (VC-Piedmont). That’s why Sesia River from Borgosesia to Piode has recently been included among the KBA-Freshwater Key biodiversity areas in the north-western Mediterranean sub-region Identified by the IUCN (Máiz-Tomé et al., 2017) ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: Wieksza liczba stanowisk na mapie rozmieszczenia lipienia w regionie alpejskim wynika wyłącznie z poprawy stanu wiedzy w porównaniu z raportem z roku 2013.
Regulowana liczebność przez eksploatację i zarybienia na aktualnym obszarze występowania, który obejmuje miejsca autochtoniczne oraz rzeki, w których został wprowadzony zapewniają przetrwanie gatunku w dłuższej perspektywie czasowej (FRR określono na poziomie aktualnym).
Do obliczenia całkowitej powierzchni zasięgu w regionie biogeograficznym użyto standardowego algorytmu IT-tool. ||
->Population: Liczbę zajętych pól siatki 1x1 km ustalono zliczając wszystkie pola takiej siatki, które znalazły się wewnątrz dużego pola 10x10 km z warstwy ilustrującej rozmieszczenie gatunku, w których znajduje się rzeka lub jezioro. Uwzględniono wyłącznie pola 1x1 km leżące w granicach Polski.
Oceny krótkoterminowego trendu populacji dokonano wykorzystując połączone dane naukowe pochodzące z publikacji oraz wyników prowadzonego monitoringu.
Ocenę trendu długoterminowego przeprowadzono na podstawie danych gospodarczych omówionych w publikacji Ciosa i in. (2018). Przyczyną uznania trendów populacji za niepewne są informacje wędkarskie wskazujące raczej na spadek liczebności gatunku. Podobnych danych dostarczył też monitoring PMŚ_IOP i najnowsze prace ichtiofaunistyczne. Uznano, że nie ma podstaw do bardziej jednoznacznego określenia trendów populacji. Ponieważ jednak wspomniana publikacja wskazuje na spadek liczebności gatunku, założono, że FRP powinna być większa od obecnej. ||
->HabInfo: W 2013 stan siedliska uznano za dobry, o czym zdecydowała dobra ocena jakości siedliska z uwagi na duża naturalność hydromorfologiczna koryta cieków badanych w ramach monitoringu PMŚ/GIOŚ, a zwłaszcza rodzaj substratu dennego i charakterystyki przepływu“. Nie ma żadnych danych wskazujących na pogorszenie stanu siedliska. ||
->Future: Całkowite uzależnienie występowania gatunku od działalności gospodarczej nie pozwala na wyższą ocenę dla perspektyw populacji niż niezadowalająca, a tym samym ogólnych perspektyw zachowania gatunku. ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: Lipień jest uważany za gatunek całkowicie zależny od działań ochronnych (kategoria CD na „Czerwonej liście minogów i ryb – stan 2009”), które w jego przypadku polegają na zarybieniach wód otwartych dla celów wędkarskich.

Zasięg i rozmieszczenie:
Wzrost zasięgu i rozmieszczenia lipienia w regionie alpejskim wynika wyłącznie z poprawy stanu wiedzy w porównaniu z raportem z roku 2013.
FRR - gatunek zależny od gospodarowania. Aktualny zasięg, który obejmuje miejsca autochtoniczne oraz rzeki, w których został wprowadzony powinien zapewnić przetrwanie gatunku w dłuższej perspektywie czasowej.

Populacja:
Przyczyną uznania trendów populacji za niepewne są informacje wędkarskie wskazujące raczej na spadek liczebności gatunku. Podobnych danych dostarczył też monitoring PMŚ_IOP i najnowsze prace ichtiofaunistyczne. Uznano, że nie ma podstaw do bardziej jednoznacznego określenia trendów populacji.
Jednak z uwagi na dane wędkarskie wskazujace na spadek liczebności gatunku, założono, że FRP powinna być większa od obecnej.

Siedlisko gatunku:
W 2013 stan siedliska uznano za dobry, o czym zdecydowała dobra ocena jakości siedliska z uwagi na duża naturalność hydromorfologiczna koryta cieków badanych w ramach monitoringu PMŚ/GIOŚ, a zwłaszcza rodzaj substratu dennego i charakterystyki przepływu“. Nie ma żadnych danych wskazujących na pogorszenie stanu siedliska. W kolejnych raportach monitoringu PMŚ_IOP ten parametr jest stale oceniany jako właściwy.

Perspektywy ochrony:
Całkowite uzależnienie występowania gatunku od działalności gospodarczej nie pozwala na wyższą ocenę od niezadowalającej.

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: Populations of Thymallus thymallus are declining in whole country. ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: LC on national red list 2015, Population size for Thymallus thymallus in the ALP region was estimated based on the same assumption as in the 2013 report where 5% of the individuals were assumed to be the in the ALP region.

To estimate current population size in the required reporting format (km2) the following procedure was done in ArcGIS. First a Range Map is constructed using the Range Tool, then a layer displaying water occurrences is applied (From SMHI, For freshwater:  surface areas for lakes (object ID 50), dams (Object ID 51) and larger watercourses (Object ID 60), and lines for rivers (Object ID 10,11) and channels (Object ID 30,31); for Baltic Sea the SMHI water basin map). Finally a grid with 1km2 squares is applied and for all biogeographic regions the number of 1 km2 squares that is within the species range and contains water is counted. ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: No trend given in 2013 report since then considered FV ||
->JustificationThreshold: N/A ||
->Other: ETC’s (2018) range tool is used to generate a standardized grid map and to calculate the range. The distribution is based on verified reports from several datasources in Analysportalen (https://www.analysisportal.se; excerpt made in 2018), complimented with commercial landings in 2017 for Vendace and whitefish in MBAL, and adding previous reported range for all species when expert judgement (Reference group for fishes; Mikael Svensson, SLU artdatabnken, Erik Degerman SLU Aqua, Zeynep Peckan Hekim, SLU Aqua, Ann-Britt Florin SLU Aqua, Micael Söderman, Sportfisheries organisation) deemed that the species most probably where still in the area although nobody had reported it during the last assessment period since there had been no monitoring in the area. The short term trend was estimated comparing size of range in 2013 report and current report. For fish only populations reproducing within the biogeographical region and within Sweden’s territorial boundaries are counted. This means that for MBAL only the populations in the coastal area is counted. Furthermore for anadromous fish only the part of the population migrating into rivers for spawning is counted. This means that salmon in the Skagerrak/Kattegat area is assessed in the BOR and CON region and not in MBAL or MATL.

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: Methodik zur Ermittlung der Populationsgröße in EU-Einheit: Verschneidung der Vorkommenspunkt (Distribution) mit grids1x1 und Habitatmaskierung mit CorineLandCover-Klassen ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: The current Range surface area calculation does not represent the real range surface area, which is considered to be the range in 2013 - 50471.61km2. Change in availability of underpinning mapping data compared to 2013 has resulted in an apparent decrease in range area, but this is not genuine change. Expert opinion considers the trend to be stable. For further information see the 2019 Article 17 UK Approach document. ||
->Population: Expert opinion concluded that the operator set in 2013 'approximately equal to' remains appropriate despite the change in units from 10x10km2 in 2013 to 1x1km2 in 2019. ||
->HabInfo: Habitat sufficiency for grayling remains compromised by several factors, including physical barriers to migration, interspecific competition with other rheophylic fish (i.e. species with a preference for living in flowing water) and non-native crayfish, and continued poor water quality. ||
->Future: Future trend of Range is Positive - increasing <=1% (one percent or less) per year on average; Future trend of Population is Positive - increasing <=1% (one percent or less) per year on average; and Future trend of Habitat for the species is Positive- slight/moderate improvement. For further information on how future trends inform the Future Prospects conclusion see the 2019 Article 17 UK Approach document. ||
->Conclusion: Conclusion on Range reached because: (i) the short-term trend direction in Range surface area is stable; and (ii) the current Range surface area is approximately equal to the Favourable Reference Range.
Conclusion on Population reached because: (i) the short-term trend direction in Population size is stable; and (ii) the current Population size is approximately equal to the Favourable Reference Population.
Conclusion on Habitat for the species reached because: (i) the area of occupied and unoccupied habitat is not sufficiently large and (ii) the habitat quality is not adequatefor the long-term survival of the species; and (iii) the short-term trend in area of habitat is stable.
Conclusion on Future prospects reached because: (i) the Future prospects for Range are good; (ii) the Future prospects for Population are good; and (iii) the Future prospects for Habitat for the species are poor.
Overall assessment of Conservation Status is Unfavourable-inadequate because two of the conclusions are Unfavourable-inadequate.
Overall trend in Conservation Status is based on the combination of the short-term trends for Range - stable, Population - stable, and Habitat for the species - stable.
The Overall assessment of Conservation Status has changed between 2013 and 2019 because the conclusion for Population has changed from Unknown to Favourable, the conclusion for Habitat for the species has changed from Favourable to Unfavourable-inadequate and the conclusion for Future Prospects has changed from Unknown to Unfavourable-inadequate.
The overall trend in conservation status is the same as in 2013. ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: The poor value of population estimation has given due to the fact that grayling reproduction circle is quite long. As grayling reaches fertility by the age of 4 years, the ongoing and planned grayling reinforcement can give positive and confirmed results not before 6 years. ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: The overall trend should be U but the drop down menu is not active in the reporting tool, thus it is not techinically possible to select the trend. ||
->JustificationThreshold: N/A ||
->Other: 2.3.1. Introduced populations in central parts of southern Finland, outside of the native range, were not included. 2.4.2. Population size estimated as the number of localities, i.e. separate drainage basins and coastal areas was the same method as in the previous report. 2.9.5. In main part of the range habitats of grayling are in good condition only those in sea area and coastal rivers were worsened and declined. In recent evaluation of threatened species (Urho et al. 2010) sea-spawning and anadromous populations of grayling were placed to category Critically Endangered (CR). 2.3.1. Keski-Suomen siirretyt harjuspopulaatiot eivät ole mukana levinneisyydessä. 2.4.2. Populaatiokoon yksikkönä käytettiin edellisen raportin tapaan esiintymien määrää valuma-alueilla ja rannikkoruuduilla. 2.9.5. Suuressa osassa elinaluetta habitaatit ovat hyvässä kunnossa, mutta merialueella ja rannikon joissa niiden laatu on heikentynyt ja alue pienentynyt. Meriharjus luokiteltiin uusimmassa arvioinnissa äärimmäisen uhanalaiseksi.

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: Distribution range differs from the previous reporting period due to new founds in test fishing in some rivers. Additional data from recreational fisheries. FRR includes mainly two river basins that are suitable for this species. ||
->Population: As FRP 1 x 1 km grids are used, which includes the rivers where Thymallus thymallus is detected in test fishing and some estimates from these studies.
Some restocking and acclimatization carried out to increase the distribution range and population size. Effect is unknown. Populations has low specimens density. Population dynamics are influenced by natural temperature fluctuations. ||
->HabInfo: Information from test fishing in rivers used. Part of habitats was lost in 1900-2000 due to small HPP construction, but during the reporting period no hydropower construction have taken place that could threaten species habitats. ||
->Future: N/A ||
->Conclusion: During the reporting period no hydropower construction have taken place that could threaten species distribution range. Some restocking and acclimatization carried out to increase the distribution range and population size. ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: Previous reference value 198 000 based on current value 2013; difference between 2013 and 2018 due to new method & better knowledge. ||
->Population: LC on national red list 2015, Population size for Thymallus thymallus in the BOR region was updated for the rivers and streams based on the average density (number per 100 m2) of the species range from SERS (Electrofishing in rivers and streams) for 1995-2018. The population size in the lakes were estimated based on the 2013 report where lake area of 3218 km2 with Thymallus thymallus was estimated to be 1 500‐3 000 ind. per km2 with and addition of 20 000‐40 000 ind. in Lake Vättern. This provided a value range of 4 847 000 to 9 694 000 ind. which was added to the updated rivers and streams estimated from multiplying the density of 0.26 ind/100 m2 for the period 2013-2018 with the surface area of 752 km2 for the rivers and streams. This provided us a value of 1 955 200 individuals which was added to the lake estimates from 2013 for the BOR region finally giving us a range of 6 802 200 to 11 649 200 with a current value of 9 225 700 (average of the range) for Thymallus thymallus in 2018 for BOR region.

To estimate current population size in the required reporting format (km2) the following procedure was done in ArcGIS. First a Range Map is constructed using the Range Tool, then a layer displaying water occurrences is applied (From SMHI, For freshwater:  surface areas for lakes (object ID 50), dams (Object ID 51) and larger watercourses (Object ID 60), and lines for rivers (Object ID 10,11) and channels (Object ID 30,31); for Baltic Sea the SMHI water basin map). Finally a grid with 1km2 squares is applied and for all biogeographic regions the number of 1 km2 squares that is within the species range and contains water is counted. ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: No trend given in 2013 report since then considered FV ||
->JustificationThreshold: N/A ||
->Other: ETC’s (2018) range tool is used to generate a standardized grid map and to calculate the range. The distribution is based on verified reports from several datasources in Analysportalen (https://www.analysisportal.se; excerpt made in 2018), complimented with commercial landings in 2017 for Vendace and whitefish in MBAL, and adding previous reported range for all species when expert judgement (Reference group for fishes; Mikael Svensson, SLU artdatabnken, Erik Degerman SLU Aqua, Zeynep Peckan Hekim, SLU Aqua, Ann-Britt Florin SLU Aqua, Micael Söderman, Sportfisheries organisation) deemed that the species most probably where still in the area although nobody had reported it during the last assessment period since there had been no monitoring in the area. The short term trend was estimated comparing size of range in 2013 report and current report. For fish only populations reproducing within the biogeographical region and within Sweden’s territorial boundaries are counted. This means that for MBAL only the populations in the coastal area is counted. Furthermore for anadromous fish only the part of the population migrating into rivers for spawning is counted. This means that salmon in the Skagerrak/Kattegat area is assessed in the BOR and CON region and not in MBAL or MATL.

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: Because the range estimated for previous reporting period was according the current knowledge slightly underestimated and more data about Grayling occurrence are available, the Grayling range for previous reporting period was
recreated from currently known information. The range surface area for reporting period 2007-12 was estimated as 16 200 km2. ||
->Population: Because the population size estimated for previous reporting period was according the current knowledge slightly underestimated and more data about Grayling occurrence are available, the Grayling population size for previous reporting period was
recreated from currently known information. The Grayling population size for reporting period 2007-12 was estimated as 165 1x1 km and 98 10x10 km grid cells.
The derease in population size refletcs in angling statistics and is even much more apparent. Catch of Grayling decreased 10 times between current and previous reporting period. The decrease is continuos from 1990's when were catches of Grayling 20 times higher. ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: Methodik zur Ermittlung der Populationsgröße in EU-Einheit: Verschneidung der Vorkommenspunkt (Distribution) mit grids1x1 und Habitatmaskierung mit CorineLandCover-Klassen; In Teilen des Verbreitungsgebietes U2. ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: Due to hydropowerplant on the Dobra River range decreased. ||
->Population: Decreasing of population is connected with construction of a hydropowerplant on the Dobra River. ||
->HabInfo: Quality of occupied habitat is assessd as uncertain based on the results for hydromophological, ecological and total parameters according to the Water Framework Directive. Dana were provided by Croatian Waters (water management autority) from Water Management Plan 2016-2021., Excerpt from the Register of Water Bodies.
During winter period pressure from cormorant is present. ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: The population estimate is provided as a range whose minimum and maximum values are thus calculated:
• Minimum: as the intersection between the 1x1km grid, the main hydrographic network and the species' 10x10km distribution.
• Maximum: as the intersection between the 1x1km grid, the whole hydrographic network (the main plus the secondary till the 3rd order) and the species' 10x10km distribution.

For the species of Thymallus occurring in Northern Italy, come autors argue that it has to be referred as Thymallus aeliani (Geiger M. F. et al., 2012; Meraner A. & Gandolfi A., 2012; Bianco, 2013; Bravničar et al., 2015; Dyldin et al., 2017). Haplotype of native representa¬tives of the genus Thymallus occurring in the Adriatic Sea basin from Northern Italy to the Western Slovenia is very different from all other transalpine members of the genus. According to molecular studies, the variation had occurred probably 4 million years ago Th.thymallus has red caudal fin, whereas blue caudal fin is typical for Thymallus aeliani (Dyldin et al., 2017). The mixing of native Adriatic haplotypes with haplotypes of Atlantic Origin (alloctonous) has been mostly caused by restocking activities. Today pure Adriatic grayling populations seem to resist in Val Sesia basin (VC-Piedmont). That’s why Sesia River from Borgosesia to Piode has recently been included among the KBA-Freshwater Key biodiversity areas in the north-western Mediterranean sub-region Identified by the IUCN (Máiz-Tomé et al., 2017). ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: Historically quite common and widespread species of medium-sized rivers, based on literature, and actual range is close to FRR, but some rivers are unoccupied due to ecological discontinuity and insufficient habitat quality ||
->Population: Distribution in terms of occupied grids 1x1 are close to FRP, but based on monitoring data and expert's opinion, population numbers in terms of individuals are considerably declining and far below FRP ("much more than (>>)) due to a combination of insufficient habitat quality/structure and predation;
Based on monitoring data and experts' opinion, 371 grids 1x1 are occupied by the species ||
->HabInfo: Based on expert's opinion:
habitat area is close to sufficient, although some rivers or river parts are unoccupied due to unfavourable habitat conditions;
habitat quality in combination to predation, is highly insufficient: ecological discontinuity, impoundment, diffuse pollution, high sediment charge, missing natural hydromorphological conditions… ||
->Future: N/A ||
->Conclusion: Historically quite common and widespread species of medium-sized rivers, but population numbers in terms of individuals are considerably declining and far below FRP ("much more than (>>)) due to a combination of insufficient habitat quality/structure and predation: ecological discontinuity, impoundment, diffuse pollution, high sediment charge, missing natural hydromorphological conditions… ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: Wzrost zasięgu i rozmieszczenia lipienia w regionie kontynentalnym wynika wyłącznie z poprawy stanu wiedzy w porównaniu z raportem z 2013 r.
Regulowana liczebność przez eksploatację i zarybienia na aktualnym obszarze występowania, który obejmuje miejsca autochtoniczne oraz rzeki, w których został wprowadzony zapewniają przetrwanie gatunku w dłuższej perspektywie czasowej (FRR określono na poziomie aktualnym).
Do obliczenia całkowitej powierzchni zasięgu w regionie biogeograficznym użyto standardowego algorytmu IT-tool. ||
->Population: Liczbę zajętych pól siatki 1x1 km ustalono zliczając wszystkie pola takiej siatki, które znalazły się wewnątrz dużego pola 10x10 km z warstwy ilustrującej rozmieszczenie gatunku, w których znajduje się rzeka lub jezioro. Uwzględniono wyłącznie pola 1x1 km leżące w granicach Polski.
Oceny krótkoterminowego trendu populacji dokonano wykorzystując połączone dane naukowe pochodzące z publikacji oraz wyników prowadzonego monitoringu.
Ocenę trendu długoterminowego przeprowadzono na podstawie danych gospodarczych omówionych w publikacji Ciosa i in. (2018).
Przyczyną uznania trendów populacji za niepewne są informacje wędkarskie wskazujące raczej na spadek liczebności gatunku. Podobnych danych dostarczył też monitoring PMŚ_IOP i najnowsze prace ichtiofaunistyczne. Uznano, że nie ma podstaw do bardziej jednoznacznego określenia trendów populacji.
Ponieważ jednak wspomniana publikacja wskazuje na spadek liczebności gatunku, założono, że FRP powinna być większa od obecnej. ||
->HabInfo: Według danych monitoringu PMŚ_IOP jakość siedlisk gatunku jest dobra. Brak też informacji o ewentualnym jej pogarszaniu się. ||
->Future: Lipień jest gatunkiem stanowiącym ważny obiekt zainteresowania wędkarskiego. Jego egzystencja od wielu lat jest przy tym całkowicie uzależniona od prowadzonych zarybień. Gatunek nie jest w stanie wytworzyć stabilnych, samorozradzających się populacji. Z tego też powodu perspektywy ochrony należy uznać za niezadowalające. ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: Lipień jest uważany za gatunek całkowicie zależny od działań ochronnych (kategoria CD na „Czerwonej liście minogów i ryb – stan 2009”), które w jego przypadku polegają na zarybieniach wód otwartych dla celów wędkarskich.

Zasięg i rozmieszczenie:
Wzrost zasięgu i rozmieszczenia lipienia w regionie kontynentalnym wynika wyłącznie z poprawy stanu wiedzy w porównaniu z raportem z 2013 r.

Populacja:
Przyczyną uznania trendów populacji za niepewne są informacje wędkarskie wskazujące raczej na spadek liczebności gatunku. Podobnych danych dostarczył też monitoring PMŚ_IOP i najnowsze prace ichtiofaunistyczne. Uznano, że nie ma podstaw do bardziej jednoznacznego określenia trendów populacji.

Wartości referencyjne (zasięg i populacja):
Zasięg: Zarybienia na aktualnym obszarze występowania, który obejmuje miejsca autochtoniczne oraz rzeki, w których został wprowadzony zapewniają przetrwanie gatunku w dłuższej perspektywie.
Populacja: W obecnym raporcie zdecydowano się na określenie jej jako większa niż aktualna, ze względu na dane wędkarskie wskazujące na spadek wielkości populacji (choć brak wystarczająco udokumentowanych danych by określić trendy jako spadkowe).

Siedlisko gatunku:
Według danych monitoringu PMŚ_IOP jakość siedlisk gatunku jest dobra.

Perspektywy ochrony:
Lipień jest gatunkiem stanowiącym ważny obiekt zainteresowania wędkarskiego. Jego egzystencja od wielu lat jest przy tym całkowicie uzależniona od prowadzonych zarybień. Gatunek nie jest w stanie wytworzyć stabilnych, samorozradzających się populacji. Z tego też powodu perspektywy ochrony należy uznać za niezadowalające.

Ocena ogólna: Stan niezadowalający U1. Ocena bez zmian w stosunku do poprzedniego raportu.

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: Thymallus Thymallus 29% below FRR in MBAL ||
->Population: LC on national red list 2015, In MBAL population size was assumed to be the same as in 2013.

To estimate current population size in the required reporting format (km2) the following procedure was done in ArcGIS. First a Range Map is constructed using the Range Tool, then a layer displaying water occurrences is applied (From SMHI, For freshwater:  surface areas for lakes (object ID 50), dams (Object ID 51) and larger watercourses (Object ID 60), and lines for rivers (Object ID 10,11) and channels (Object ID 30,31); for Baltic Sea the SMHI water basin map). Finally a grid with 1km2 squares is applied and for all biogeographic regions the number of 1 km2 squares that is within the species range and contains water is counted. ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: ETC’s (2018) range tool is used to generate a standardized grid map and to calculate the range. The distribution is based on verified reports from several datasources in Analysportalen (https://www.analysisportal.se; excerpt made in 2018), complimented with commercial landings in 2017 for Vendace and whitefish in MBAL, and adding previous reported range for all species when expert judgement (Reference group for fishes; Mikael Svensson, SLU artdatabnken, Erik Degerman SLU Aqua, Zeynep Peckan Hekim, SLU Aqua, Ann-Britt Florin SLU Aqua, Micael Söderman, Sportfisheries organisation) deemed that the species most probably where still in the area although nobody had reported it during the last assessment period since there had been no monitoring in the area. The short term trend was estimated comparing size of range in 2013 report and current report. For fish only populations reproducing within the biogeographical region and within Sweden’s territorial boundaries are counted. This means that for MBAL only the populations in the coastal area is counted. Furthermore for anadromous fish only the part of the population migrating into rivers for spawning is counted. This means that salmon in the Skagerrak/Kattegat area is assessed in the BOR and CON region and not in MBAL or MATL.

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: N/A ||
->Population: N/A ||
->HabInfo: N/A ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: N/A

Open Original Report  

Scientific name used in original MS report if different than recommended: "Thymallus thymallus"
Information provided in the field 2.8.2: Reported additionnal information: ||
->Range: Grayling is occurring in Panonian region mostly due to stocking by angling union. Current occurrence of Grayling is situated only in limited parts of River Dyje below Znojmo reservoir and in the River Svratka below Brno. At these localities is artificially created secondary Trout-Grayling zone by the reservoi's outflow and grayling is stocked here. The current, and maybe the historical as well, occurrence of Grayling most probably doesn't encompass the panonian region and the only population therein results from artificial stocking and most probably is not self-sustainable. ||
->Population: N/A ||
->HabInfo: There is hardly any natural habitat for Grayling in the panonian biogeographic region. ||
->Future: N/A ||
->Conclusion: N/A ||
->JustificationThreshold: N/A ||
->Other: 1/Range, distribution areas and population size are probably incompleted, its exact determination due to the large area of their occurrence and simultaneously decreasing their number (impeaching credibility of historical data) will be quite difficult. 2/The grayling is widely reared and stocked by fisheries organisations. Unfortunatelly, all this stock originates from limited number of individuals from few river basins and this can lead to decrease of intraspecies genetic diversity. Morover, grayling populations are during last years decimated by overwintering cormorant flocks, which together with increased fishing pressure and altered habitat, cause decline or even extinction of some local populations. These natural populations are thereafter renewed from the artificial sources.pressure and altered habitat, cause decine or even extinction of some local populations. These natural populations are thereafter renewed from the artificial sources.

Open Original Report