| 1. |
- Ahrné, Karin, et al.
(författare)
-
Rödlista över fjärilar Lepidoptera
- 2015
-
Ingår i: Rödlistade arter i Sverige 2015. - Uppsala : ArtDatabanken SLU. - 9789187853104 ; , s. 98-112
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 2. |
- Bartsch, Hans, et al.
(författare)
-
Tvåvingar – Diptera
- 2010
-
Ingår i: Rödlistade arter i Sverige 2010 – The 2010 Red List of Swedish Species. - 9789188506351 ; , s. 393-410
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 3. |
- Beausang, Angela, et al.
(författare)
-
"Möjligheten att rädda några av dessa kvinnors liv har inte vägts in"
- 2014
-
Ingår i: Dagens Medicin. - : Dagens Medicin.
-
Tidskriftsartikel (populärvet., debatt m.m.)abstract
- Namnet på Socialstyrelsens vägledning lyder: Hur upptäcka våldsutsatthet? Ja, det kan man verkligen fråga sig efter att ha läst detta föga vägledande dokument, skriver ett stort antal kritiska debattörer.
|
|
| 4. |
- Bengtsson, Bengt Å., et al.
(författare)
-
Fjärilar
- 2010. - 1
-
Ingår i: Rödlistade arter i Sverige 2010. - Uppsala : Artdatabanken i samarbete med Naturvårdsverket. - 9789188506351 ; , s. 361-392
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 5. |
- Bjelke, Ulf, et al.
(författare)
-
Rödlistade arter och naturvård i sand- och grustäkter
- 2012
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Naturligt störningspräglade sandmarker hyser en artrik och konkurrenskänslig flora och fauna. Sådana livsmiljöer har minskat drastiskt under 1900-talet. Under samma period ökade antalet sand- och grustäkter. Trots att täkterna ofta innebär stora ingrepp i naturen kan de utgöra viktiga ersättningshabitat för arter knutna till sandiga miljöer. Sedan några decennier så minskar även sand- och grustäkter starkt, beroende på att samhället vill bevara naturliga sand- och grusresurser. Produktionen har medvetet flyttats till bergkrossanläggningar och det ges idag mycket få tillstånd för utökad verksamhet eller nya sandtäkter. Från fler än 5 000 aktiva täkter på 1990-talet har antalet sjunkit till färre än 1 000. Täkter som avslutas har ofta föreskrifter om att planas ut och övertäckas vilket gör att deras naturvärden spolieras. Drygt 300 rödlistade arter har gynnats av sandtäkter när ursprungshabitaten minskat. Steklar och skalbaggar utgör de största grupperna med närmare två tredjedelar av arterna. Södra Sverige hyser störst rikedom av dessa arter men såväl täkter som arternas mer naturliga miljöer är bristfälligt undersökta, särskilt i glest befolkade delar av landet. För att bevara dessa täktlevande arter krävs att naturvården arbetar för att förhindra att avslutade täkter planas ut eller täcks över. Det är av stor betydelse att naturvårdande myndigheter ges tillräckliga styrmedel och ekonomiska resurser att arbeta med täkter. Genom enkla åtgärder kan de skapade livsmiljöerna i täkter bevaras till en låg kostnad jämfört med andra alternativa biotopvårdande åtgärder. Rapporten belyser artsamhällena som kan finnas i täkter samt viktiga strategier och åtgärder för naturvård i dessa miljöer. Rapporten har finansierats av Naturvårdsverket och av SLU:s medel för fortlöpande miljöanalys.
|
|
| 6. |
- Cederberg, Björn
(författare)
-
Colour Patterns Do Not Diagnose Species: Quantitative Evaluation of a DNA Barcoded Cryptic Bumblebee Complex
- 2012
-
Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 7
-
Tidskriftsartikel (refereegranskat)abstract
- Cryptic diversity within bumblebees (Bombus) has the potential to undermine crucial conservation efforts designed to reverse the observed decline in many bumblebee species worldwide. Central to such efforts is the ability to correctly recognise and diagnose species. The B. lucorum complex (Bombus lucorum, B. cryptarum and B. magnus) comprises one of the most abundant and important group of wild plant and crop pollinators in northern Europe. Although the workers of these species are notoriously difficult to diagnose morphologically, it has been claimed that queens are readily diagnosable from morphological characters. Here we assess the value of colour-pattern characters in species identification of DNA-barcoded queens from the B. lucorum complex. Three distinct molecular operational taxonomic units were identified each representing one species. However, no uniquely diagnostic colour-pattern character state was found for any of these three molecular units and most colour-pattern characters showed continuous variation among the units. All characters previously deemed to be unique and diagnostic for one species were displayed by specimens molecularly identified as a different species. These results presented here raise questions on the reliability of species determinations in previous studies and highlights the benefits of implementing DNA barcoding prior to ecological, taxonomic and conservation studies of these important key pollinators.
|
|
| 7. |
- Cederberg, Björn
(författare)
-
Distribution of bumblebees across europe
- 2018
-
Ingår i: One Ecosystem. - : Pensoft Publishers. - 2367-8194. ; 3
-
Tidskriftsartikel (refereegranskat)abstract
- Insect pollinators are a key component of biodiversity; they also play a major role in the reproduction of many species of wild plants and crops. It is widely acknowledged that insect pollinators are threatened by many environmental pressures, mostly of anthropogenic nature. Their decline is a global phenomenon. A better understanding of their distribution can help their monitoring and ultimately facilitate conservation actions. Since we only have partial knowledge of where pollinator species occur, the possibility to predict suitable environmental conditions from scattered species records can facilitate not only species monitoring, but also the identification of areas potentially vulnerable to pollinators decline. This data paper contains the predicted distribution of 47 species of bumblebees across the 28 Member States of the European Union (EU-28). Amongst the wild pollinators, bumblebees are one of the major groups contributing to the production of many crop species, hence their decline in Europe, North America and Asia can potentially threaten food security. Predictions were derived from distribution models, using species records with a spatial resolution of 10 km accessed from a central repository. Predictions were based on records from 1991 to 2012 and on a series of spatial environmental predictors from three main thematic areas: land use and land cover, climate and topography. These distributions were used to estimate the value of pollination as an ecosystem service. In light of the recent European Pollinators Initiative, this paper provides valuable information for a better understanding of where wild pollinators occur and it should be extended to other pollinator species.
|
|
| 8. |
- Cederberg, Björn
(författare)
-
Forward to the north: two Euro-Mediterranean bumblebee species now cross the Arctic Circle
- 2015
-
Ingår i: Annales de la Societe Entomologique de France. - : Informa UK Limited. - 0037-9271 .- 2168-6351. ; 51, s. 303-309
-
Tidskriftsartikel (refereegranskat)abstract
- In recent decades, several animal and plant species have been in regression (population size decrease and geographical distribution shrinking). This loss of biodiversity can be due to various factors such as the destruction and fragmentation of habitat, urban development, pesticides or climate change. However, some species benefit from these changes and expand their distribution. Here we report observations (in 2013 and 2014) of two Euro-Mediterranean bumblebee species: Bombus terrestris for the first time and Bombus lapidarius, north of the Arctic Circle in Fennoscandia.
|
|
| 9. |
- Cederberg, Björn
(författare)
-
Genes Suggest Ancestral Colour Polymorphisms Are Shared across Morphologically Cryptic Species in Arctic Bumblebees
- 2015
-
Ingår i: PLoS ONE. - : Public Library of Science (PLoS). - 1932-6203. ; 10
-
Tidskriftsartikel (refereegranskat)abstract
- Our grasp of biodiversity is fine-tuned through the process of revisionary taxonomy. If species do exist in nature and can be discovered with available techniques, then we expect these revisions to converge on broadly shared interpretations of species. But for the primarily arctic bumblebees of the subgenus Alpinobombus of the genus Bombus, revisions by some of the most experienced specialists are unusual for bumblebees in that they have all reached different conclusions on the number of species present. Recent revisions based on skeletal morphology have concluded that there are from four to six species, while variation in colour pattern of the hair raised questions as to whether at least seven species might be present. Even more species are supported if we accept the recent move away from viewing species as morphotypes to viewing them instead as evolutionarily independent lineages (EILs) using data from genes. EILs are recognised here in practice from the gene coalescents that provide direct evidence for their evolutionary independence. We show from fitting both general mixed Yule/coalescent (GMYC) models and Poisson-tree-process (PTP) models to data for the mitochondrial COI gene that there is support for nine species in the subgenus Alpinobombus. Examination of the more slowly evolving nuclear PEPCK gene shows further support for a previously unrecognised taxon as a new species in northwestern North America. The three pairs of the most morphologically similar sister species are separated allopatrically and prevented from interbreeding by oceans. We also find that most of the species show multiple shared colour patterns, giving the appearance of mimicry among parts of the different species. However, reconstructing ancestral colour-pattern states shows that speciation is likely to have cut across widespread ancestral polymorphisms, without or largely without convergence. In the particular case of Alpinobombus, morphological, colour-pattern, and genetic groups show little agreement, which may help to explain the lack of agreement among previous taxonomic revisions.
|
|
| 10. |
- Cederberg, Björn
(författare)
-
The arctic and alpine bumblebees of the subgenus Alpinobombus revised from integrative assessment of species' gene coalescents and morphology (Hymenoptera, Apidae, Bombus)
- 2019
-
Ingår i: Zootaxa. - : Magnolia Press. - 1175-5326 .- 1175-5334. ; 4625, s. 1-68
-
Tidskriftsartikel (refereegranskat)abstract
- The bumblebees of the subgenus Alpinobombus of the genus Bombus are unusual among bees for specialising in many of the most northerly vegetated arctic habitats on Earth. Most named taxa in this group (37 available names from a total of 67 names) were described originally from differences in the colour patterns of the hair. Previous revisions have shown unusually little agreement, recognising a range of 6.9 species, in part because of pronounced intraspecific variation in both skeletal morphology and in the colour patterns of the hair. Here we examine variation among 4622 specimens from throughout the group's global range. Bayesian inference of the gene tree for the fast evolving mitochondrial COI gene combined with Poisson-tree-process analysis of this tree shows support for 10 gene lineages as candidates for being putative species lineages. Integrative assessment shows that the interpretation of these results is not straightforward. Evidence from the fast evolving mitochondrial 16S ribosomal RNA gene supports two of the COI gene alleles (from the samples B. kluanensis s. str. and 'unnamed2') as being associated with just one 16S allele. Double COI bands on the PCR gels for these individuals and double peaks on sequence traces (in one case with both COI alleles sequenced from one individual) identifies this as a likely case of COI paralogy that has resulted in mitochondrial heteroplasmy. Evidence from morphology also supports only the remaining nine lineages as separate. Evidence from extracts of cephalic labial gland secretions (CLGS, with components believed to function as sex pheromones) reported by others shows small diagnostic differences between all of the candidate species examined (although B. kluanensis s. l. was not examined) and shows larger differences between all of the species pairs that we find are likely to have co-occurred at least in the past, revealing a likely limitation to the CLGS approach in cases of recent and continuously allopatric species. Consequently we infer nine species in the subgenus Alpinobombus (so that B. kluanensis s. str. and 'unnamed2' are interpreted as conspecific, as B. kluanensis s. l.). We provide distribution maps and identification keys for the nine species. The morphology of the male of B. kluanensis is described for the first time, including a unique, unusually dense pad of short hair on the mandible that may have a function involving CLGS in mate-searching behaviour. In seeking to identify the valid names for these species, seven new lectotypes are designated and support is provided for synonymizing 10 names as proposed in a recent summary table of names. The prevailing usage of Bombus balteatus Dahlbom is maintained as valid by proposing Bombus nivalis Dahlbom and Bombus tricolor Dahlbom as nomina oblita and by proposing Bombus balteatus Dahlbom as a nomen protectum. The prevailing usage of Bombus hyperboreus Schonherr is maintained as valid by supporting Apis arctica Quensel as a nomen oblitum and by supporting Bombus hyperboreus Schonherr as a nomen protectum. We then use sequence data from COI and 16S together with nuclear PEPCK and opsin genes to estimate dated phylogenetic relationships among the nine species, allowing for incongruent gene trees with *BEAST. If crown-group divergence within the subgenus Alpinobombus coincided with the global climate cooling and with the growth of the northern ice sheets at the end of the Miocene at ca 7.2 Ma, then divergences between each of the three pairs of sister species are likely to have coincided with fluctuations in vegetated land connections across the Bering Strait after ca 2.5 Ma.
|
|
