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Agricultural management, bedrock, and vulnerability of sexual reproduction to climate change affect the occurrence of a European near-endemic moss
Naturhistoriska riksmuseet, Enheten för botanik.ORCID-id: 0000-0002-0403-6196
Naturhistoriska riksmuseet, Enheten för botanik.ORCID-id: 0000-0003-1763-1696
2022 (Engelska)Ingår i: Bryophyte Diversity and Evolution, ISSN 2381-9677, Vol. 45, nr 1, s. 176-187Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

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.

Ort, förlag, år, upplaga, sidor
2022. Vol. 45, nr 1, s. 176-187
Nyckelord [en]
Agriculture, Drepanocladus lycopodioides, Distribution, Frequency changes, Sporophyte frequency, Weather
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Ekologi
Forskningsämne
Livets mångfald
Identifikatorer
URN: urn:nbn:se:nrm:diva-5133DOI: 10.11646/bde.45.1.11OAI: oai:DiVA.org:nrm-5133DiVA, id: diva2:1722692
Tillgänglig från: 2022-12-30 Skapad: 2022-12-30 Senast uppdaterad: 2023-01-09Bibliografiskt granskad

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