scholarly journals Two new scree plant communities in the Triglav Mountains (Julian Alps, Slovenia) / Dve novi rastlinski združbi melišč v Triglavskem pogorju (Julijske Alpe, Slovenija)

2017 ◽  
Vol 58 (1) ◽  
pp. 5
Author(s):  
Igor Dakskobler ◽  
Branko Zupan
Hacquetia ◽  
2021 ◽  
Vol 20 (1) ◽  
pp. 57-80
Author(s):  
Igor Dakskobler ◽  
Andrej Martinčič

Abstract In already known localities in the Julian Alps (Mangart, Malo Polje, Zeleno Jezero, Blehe under Šoštar) and in several new ones (Loška Koritnica, Bavh, Spodnji Lepoč, Mlinarica, Konjska planina, Mali Babanski Skedenj) we inventoried the stands along the subalpine-alpine springs and spring areas where Carex frigida frequently occurs as the predominant vascular plant. We classified them into the following associations: Saxifrago aizoidis-Caricetum ferrugineae, Caricetum davallianae s. lat., Ranunculo traunfellneri-Paederotetum luteae, Carici frigidae-Petasitetum albi (alliance Adenostylion alliariae) and Palustriello decipientis-Caricetum frigidae (alliance Cratoneurion). The latter two were described as new. Based on comparisons with similar communities along mountain springs we discussed the most appropriate classification of the latter into higher syntaxonomic units.


Hacquetia ◽  
2020 ◽  
Vol 19 (2) ◽  
pp. 155-231
Author(s):  
Igor Dakskobler ◽  
Andrej Martinčič

AbstractBased on our analysis of a large number of relevés of communities of moist rock crevices in western Slovenia (southern Julian Alps, northern part of the Trnovski Gozd Plateau) we described several new syntaxa with the endemic Primula carniolica. The most unique in terms of ecology is a hygrophytic chasmophytic community classified into the association Astrantio carniolicae-Primuletum carniolicae, which is, together with similar hygrophytic associations Astrantio carniolicae-Pinguiculetum alpinae and Campanulo cespitosae-Saxifragetum aizoidis, associations Phyteumato columnae-Primuletum carniolicae, Primulo carniolicae-Potentilletum clusianae and the subassociation Primuletum carniolicae violetosum biflorae, temporarily classified into the alliance Cystopteridion and order Potentilletalia caulescentis. Only the new association Paederoto luteae-Potentilletum caulescentis is classified into the alliance Physoplexido comosae-Saxifragion petraeae. The elevational range of chasmophytic communities with Primula carniolica is 200 to 1460 m a.s.l. Species that most commonly accompany Primula carniolica in rock crevices include Paederota lutea, Phyteuma scheuchzeri subsp. columnae, Sesleria caerulea, Aster bellidiastrum and moss Orthothecium rufescens.


1994 ◽  
Vol 105 (5-6) ◽  
pp. 387-398
Author(s):  
M. M. Abd El-Ghani
Keyword(s):  

2019 ◽  
Author(s):  
Coline Deveautour ◽  
Sally Power ◽  
Kirk Barnett ◽  
Raul Ochoa-Hueso ◽  
Suzanne Donn ◽  
...  

Climate models project overall a reduction in rainfall amounts and shifts in the timing of rainfall events in mid-latitudes and sub-tropical dry regions, which threatens the productivity and diversity of grasslands. Arbuscular mycorrhizal fungi may help plants to cope with expected changes but may also be impacted by changing rainfall, either via the direct effects of low soil moisture on survival and function or indirectly via changes in the plant community. In an Australian mesic grassland (former pasture) system, we characterised plant and arbuscular mycorrhizal (AM) fungal communities every six months for nearly four years to two altered rainfall regimes: i) ambient, ii) rainfall reduced by 50% relative to ambient over the entire year and iii) total summer rainfall exclusion. Using Illumina sequencing, we assessed the response of AM fungal communities sampled from contrasting rainfall treatments and evaluated whether variation in AM fungal communities was associated with variation in plant community richness and composition. We found that rainfall reduction influenced the fungal communities, with the nature of the response depending on the type of manipulation, but that consistent results were only observed after more than two years of rainfall manipulation. We observed significant co-associations between plant and AM fungal communities on multiple dates. Predictive co-correspondence analyses indicated more support for the hypothesis that fungal community composition influenced plant community composition than vice versa. However, we found no evidence that altered rainfall regimes were leading to distinct co-associations between plants and AM fungi. Overall, our results provide evidence that grassland plant communities are intricately tied to variation in AM fungal communities. However, in this system, plant responses to climate change may not be directly related to impacts of altered rainfall regimes on AM fungal communities. Our study shows that AM fungal communities respond to changes in rainfall but that this effect was not immediate. The AM fungal community may influence the composition of the plant community. However, our results suggest that plant responses to altered rainfall regimes at our site may not be resulting via changes in the AM fungal communities.


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