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| 2. |
- Hytteborn, Håkan, 1938-, et al.
(författare)
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Svenska mossor på död ved.
- 1999
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Ingår i: Myrinia. - : Mossornas vänner. ; 9, s. 10-11
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Tidskriftsartikel (refereegranskat)
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| 3. |
- Söderström, Lars, et al.
(författare)
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Bryophyte conservation for the future.
- 1992
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Ingår i: Biological Conservation. - 1873-2917. ; 59:2-3, s. 265-270
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Tidskriftsartikel (refereegranskat)abstract
- he conservation process involves recognizing and listing rare and decreasing species, recording their distribution, biology and specific threats, proposing conservation programmes, and executing these programmes. There are large gaps in our knowledge about bryophytes which must be filled before their conservation can be selective. These include taxonomy, bryogeography, habitat demands, natural dynamics, dispersal ability, population structure and genetics. In a long-term perspective, conservation must strive towards creating possibilities for the species to survive without too much artificial support. It is particularly important to focus on habitats and sites where the species may survive naturally during unfavourable periods. In the short term, creating nature reserves with large populations can save a species until our knowledge has increased. In practice, bryologists must be more active in collecting data and informing the conservation organizations and governmental authorities about the need for conservation.
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| 6. |
- Bennike, Ole, et al.
(författare)
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An Early Pleistocene interglacial deposit at Pingorsuit, North-West Greenland
- 2023
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Ingår i: Boreas. - : John Wiley & Sons. - 0300-9483 .- 1502-3885. ; 52:1, s. 27-41
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Tidskriftsartikel (refereegranskat)abstract
- At the Pingorsuit Glacier in North-West Greenland, an organic-rich deposit that had recently emerged from the retreating ice cap was discovered at an elevation of 480 m above sea level. This paper reports on macrofossil analyses of a coarse detritus gyttja and peaty soil, which occurred beneath a thin cover of till and glacifluvial deposits. The sediments contained remains of vascular plants, mosses, beetles, caddisflies, midges, bryozoans, sponges and other invertebrates. The flora includes black spruce, tree birch, boreal shrubs and wetland and aquatic taxa, which shows that mires, lakes and ponds were present in the area. We describe a new extinct waterwort species Elatine odgaardii. The fossils were deposited in a boreal environment with a mean July air temperature that was at least 9 degrees C higher than at present. The fossil assemblages show strong similarities with others from Greenland that have been assigned an Early Pleistocene age, and we suggest a similar age for the sediments found at the margin of the Pingorsuit Glacier. At the Pingorsuit Glacier in North-West Greenland, an organic-rich deposit was discovered at an elevation of 480 m above sea level. The sediments contained remains of vascular plants, mosses, beetles, caddisflies, midges, bryozoans, sponges and other invertebrates. The fossils were deposited in a boreal environment with a mean July air temperature that was at least 9 degrees C higher than at present.
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| 7. |
- Bennike, Ole, et al.
(författare)
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New interglacial deposits from Copenhagen, Denmark : marine Isotope Stage 7
- 2019
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Ingår i: Boreas. - : Wiley-Blackwell. - 0300-9483 .- 1502-3885. ; 48:1, s. 107-118
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Tidskriftsartikel (refereegranskat)abstract
- During a pre-site survey and construction of a new metro route and station in Copenhagen, fossiliferous organic-rich sediments were encountered. This paper reports on multidisciplinary investigations of these organic sediments, which occurred beneath a sediment succession with a lower till, glacifluvial sand and gravel, an upper till and glacifluvial sand. The organic sediments were underlain by glacifluvial sand and gravel. The organic-rich sediments, which were up to 0.5 m thick, accumulated in a low-energy environment, possibly an oxbow lake. They were rich in plant fossils, which included warmth-demanding trees and other species, such as Najas minor, indicating slightly higher summer temperatures than at present. Freshwater shells were also frequent. Bithynia opercula allowed the sediments to be put into an aminostratigraphical framework. The amino acid racemization (AAR) ratios indicate that the organic sediments formed during Marine Isotope Stage 7 (MIS 7), which is consistent with optically stimulated luminescence dating that gave ages of 206 and 248 ka from the underlying minerogenic deposit. The assemblages from Trianglen are similar to interglacial deposits from the former Free Port (1.4 km away) in Copenhagen, except that Corbicula and Pisidium clessini were not found at Trianglen. The presence of these bivalves at the Free Port and the ostracod Scottia tumida at Trianglen indicates a pre-Eemian age. AAR data from archived Bithynia opercula from the Free Port were almost identical to those from Trianglen, indicating that the two sites are contemporary. We suggest the Trianglen interglacial be used as a local name for the MIS 7 interglacial deposits in Copenhagen. MIS 7 deposits have rarely been documented from the region, but MIS 7 deposits may have been mistaken for other ages. The use of AAR ratios in Bithynia opercula has a great potential for correlation of interglacial non-marine deposits in mainland northern Europe.
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| 8. |
- Bisang, Irene, et al.
(författare)
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Agricultural management, bedrock, and vulnerability of sexual reproduction to climate change affect the occurrence of a European near-endemic moss
- 2023
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Ingår i: Bryophyte Diversity and Evolution.
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Tidskriftsartikel (refereegranskat)abstract
- We investigated whether the European near-endemic moss Drepanocladus lycopodioides has declined in its core distribution area in the southern Baltic Sea region and explored potential explanations for this. First, we re-visited sites with documented records from 1854 to 1957 in the Stockholm archipelago and nearby mainland in southern Sweden. Second, we compared the numbers and distributions of Swedish occurrences, their habitats, and substrates up to 1950 (289 herbarium records), and from 1951 onwards (347) using different map layers. Third, we explored whether inter-annual variation in reproductive performance was related to moisture conditions at five sites on an island in the Stockholm archipelago during nine years. We estimated moisture conditions based on precipitation data and dry days during the time when fertilization occurs in the year prior to sporophyte maturation. Drepanocladus lycopodioides has strongly decreased in intensively managed agricultural landscapes but remains frequent in natural or semi-natural habitats on limestone. Sporophyte development varied between years and depended on the weather condition during the fertilization period. Climate forecasts for the study area predict longer dry spells during late spring to late summer, which coincides with the timing of sexual branch initiation and fertilization in the species. We expect that sporophyte production will likely decrease in the future, which will affect the species’ abilities to re-colonize spots where it vanishes during years with poor growth conditions.
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| 9. |
- BISANG, IRENE, et al.
(författare)
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Agricultural management, bedrock, and vulnerability of sexual reproduction to climate change affect the occurrence of a European near-endemic moss
- 2022
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Ingår i: Bryophyte Diversity and Evolution. - : Magnolia Press. - 2381-9677 .- 2381-9685. ; 45:1, s. 176-187
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Tidskriftsartikel (refereegranskat)abstract
- We investigated whether the European near-endemic moss Drepanocladus lycopodioides has declined in its core distributionarea in the southern Baltic Sea region and explored potential explanations for this. First, we re-visited sites with documentedrecords from 1854 to 1957 in the Stockholm archipelago and nearby mainland in southern Sweden. Second, we comparedthe numbers and distributions of Swedish occurrences, their habitats, and substrates up to 1950 (289 herbarium records),and from 1951 onwards (347) using different map layers. Third, we explored whether inter-annual variation in reproductiveperformance was related to moisture conditions at five sites on an island in the Stockholm archipelago during nine years. Weestimated moisture conditions based on precipitation data and dry days during the time when fertilization occurs in the yearprior to sporophyte maturation. Drepanocladus lycopodioides has strongly decreased in intensively managed agriculturallandscapes but remains frequent in natural or semi-natural habitats on limestone. Sporophyte development varied betweenyears and depended on the weather condition during the fertilization period. Climate forecasts for the study area predict longerdry spells during late spring to late summer, which coincides with the timing of sexual branch initiation and fertilization inthe species. We expect that sporophyte production will likely decrease in the future, which will affect the species’ abilities tore-colonize spots where it vanishes during years with poor growth conditions.
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| 10. |
- Bisang, Irene, et al.
(författare)
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Anthoceros neesii : Red List assessment
- 2019
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Ingår i: A miniature world indecline: European Red List of Mosses, Liverworts and Hornworts. - : International Union for Conservation of Nature and Natural Resources, IUCN.
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Bokkapitel (refereegranskat)abstract
- Red List Category & Criteria:Endangered B2ab(iii) ver 3.1
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