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| 2. |
- Almstedt Jansson, Malin, et al.
(författare)
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En effektiv naturvård
- 2011
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Ingår i: Naturvårdskedjan – för en effektiv naturvård. - 9789189232600 ; :48, s. 12-24
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 3. |
- Almstedt Jansson, Malin, et al.
(författare)
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Utvärdering av programmet
- 2011
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Ingår i: Naturvårdskedjan – för en effektiv naturvård. - 9789189232600 ; :48, s. 362-369
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 4. |
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| 5. |
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| 6. |
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| 7. |
- de Jong, Johnny, et al.
(författare)
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Naturvårdens svaga länkar
- 2011
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Ingår i: Naturvårdskedjan - för en effektiv naturvård. - 9789189232600 ; :48, s. 332-349
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Bokkapitel (populärvet., debatt m.m.)
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| 8. |
- de Jong, Johnny, et al.
(författare)
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Nya svenska namn på Europas fladdermöss
- 2015
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Ingår i: Fauna och flora. - 0014-8903. ; 110, s. 36-42
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- Den taxonomiska forskningen har utvecklats snabbt de senaste decennierna. Den har ibland medfört sammanslagningar av olika arter, men oftare resulterat i att arter har splittrats genom att olika underarter upphöjts till arter. Forskningen har också medfört upptäckt av kryptiska arter, dvs. arter som morfologiskt varit svåra eller omöjliga att skilja från en närbesläktad art men för övrigt uppfyllt kraven för en god art. För fladdermössen har denna taxonomiska revolution fått stora konsekvenser, och antalet arter har ökat avsevärt. Detta har också medfört behov av svenska namn på ett antal nya arter.
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| 9. |
- Ebenhard, Torbjörn
(författare)
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A method for inferring extinction based on sighting records that change in frequency over time
- 2010
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Ingår i: Wildlife Biology. - : Wiley. - 0909-6396 .- 1903-220X. ; 16, s. 267-275
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Tidskriftsartikel (refereegranskat)abstract
- It is a very important, but also a very difficult task, to establish how long a certain species has to remain unregistered before we can declare it extinct. The wrong assumption regarding species extinction could result in a type I or type II statistical error, leading to inappropriate management actions or even species extinction. Recent development of the methods for inferring the threat of extinction, when the only available information is a record of sightings, has enabled a quantitative approach to the problem. In our study we present an index that infers extinction probability based on trends in sighting intervals. Our study comprises a description of the sighting trend index, a sensitivity analysis and an application of the index to the sighting record of the black-footed ferret Mustela nigripes. The main advantage of this method could be its sensitivity to changes in sighting frequency within the sighting record. However, further testing of the method on different data sets could be important for gaining additional knowledge regarding its adequate application in the field of conservation biology
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| 10. |
- Ebenhard, Torbjörn
(författare)
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Acipenser sturio and Acipenser nudiventris in the Danube - extant or extinct?
- 2009
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Ingår i: Journal of Applied Ichthyology. - : Hindawi Limited. - 0175-8659 .- 1439-0426. ; 25, s. 137-141
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Tidskriftsartikel (refereegranskat)abstract
- The presence of Atlantic sturgeon (Acipenser sturio) and ship sturgeon (Acipenser nudiventris) in the Danube has been known through only occasional, chance sightings; significant uncertainty remains as to whether these species are already extinct or still present in the Danube River basin. In this study, five different statistical methods were applied for assessment of their extinction probability. All methods provided a significant probability that the Atlantic sturgeon is extinct, with extinction having occurred somewhere between 1966 and 1970. Although the applied methods provided different results, all indicated that the ship sturgeon is probably still present, but that extinction may occur within a few decades. Sensitivity analyses of these statistical methods projected that new sightings of ship sturgeon in the coming years would not extend the length of extinction by more than a few years. The best management approach for these two species, given the lack of knowledge on their presence in the Danube River basin, could be to apply all feasible protection measures for the other four Danube sturgeon species. These measures could at the same time provide protection for these two species, presuming they are not already extinct or beyond recovery.
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