Recent declines and range changes of orchids in Western Europe (France, Belgium and Luxembourg)

Vogt‐Schilb, Hélène; Munoz, François; Richard, Franck; Schatz, Bertrand

doi:10.1016/j.biocon.2015.05.002

Cited by 49 publications

(30 citation statements)

References 43 publications

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“…For example, the rewarding orchid Gymnadenia nigra and Spiranthes romanzoffiana , both recorded in only two geographical units, respectively, interact with 16 and 12 pollinator species, while the sexually deceptive orchid Ophrys insectifera , recorded in 24 geographical units, interact with only two pollinator species. Finally, it is worth noting that specialisation in orchid–pollinator associations is important in terms of conservation, as specialists may be more vulnerable to pollinator extinction than generalists (Pauw & Bond, ; Phillips et al., ; Reiter et al., ; Vogt‐Schilb, Munoz, Richard, & Schatz, ). Our study thus suggests that the most vulnerable orchids are also the ones that typically have limited geographical ranges and whose conservation status is often difficult to assess due to major taxonomic confusions (Schatz, Gauthier, Debussche, & Thompson, ; Vereecken, Dafni, & Cozzolino, ).…”

Section: Discussionmentioning

confidence: 99%

“…Finally, it is worth noting that specialisation in orchid-pollinator associations is important in terms of conservation, as specialists may be more vulnerable to pollinator TA B L E 1 Results of Bayesian phylogenetic mixed models on the effect of pollination strategy, breadths of orchids' spatial and temporal distributions and sampling effort on the degree (a) and DPN (b) of each orchid species (N = 134). Significant effects in bold extinction than generalists (Pauw & Bond, 2011;Phillips et al, 2015;Reiter et al, 2016;Vogt-Schilb, Munoz, Richard, & Schatz, 2015).…”

Section: Determinants Of Specialisationmentioning

confidence: 95%

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Effect of pollination strategy, phylogeny and distribution on pollination niches of Euro‐Mediterranean orchids

et al. 2018

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Pollination niches are important components of ecological niches and have played a major role in the diversification of Angiosperms. In this study, we focused on Euro‐Mediterranean orchids, which use diverse pollination strategies and interact with various functional groups of insects. In these orchids, we investigated the determinants of pollination niche breadth and overlap by analysing the orchid–pollinator network and the factors that may have shaped it. We constructed a database reporting 1,278 interactions between 243 orchid and 773 pollinator species based on a thorough literature review. We then focused on 153 orchid species for which phylogenetic data were available. We used Bayesian phylogenetic mixed models to study the relationship between specialisation (as estimated by the degree and degree in the projected network), pollination strategy and breadths of orchids’ spatial and temporal distributions, while correcting for the effect of phylogenetic relationships among orchid species and sampling effort. We then used a singular value decomposition of the orchid–pollinator matrix combined to a redundancy and variation partitioning analyses to investigate the determinants of similarity in pollination niches between orchids. Specialisation was higher in deceptive than in nectar‐producing orchids and decreased with the breadth of orchids’ spatial distribution. When interactions were considered at the insect family level, similarity in pollination niches between orchids was solely explained by their pollination strategy and phylogeny. By contrast, when they were considered at the insect species level, this similarity was primarily explained by their geographical range and flowering time, although other factors had significant effects as well, with orchids using the same pollination strategy, being closely related and growing in the same habitats sharing more insect species than expected. Synthesis. Specialisation in orchid–pollinator interactions depends on orchids’ pollination strategy and geographical range. The pool of insect families with which orchids interact depends on their pollination strategy and phylogeny, with consistent associations between some functional or phylogenetic groups of orchids and some families of pollinators. By contrast, the pool of insect species with which orchids interact depends on their spatio‐temporal distribution, suggesting that at a finer scale, orchid–pollinator interactions are more opportunistic than previously thought.

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Section: Discussionmentioning

confidence: 99%

Section: Determinants Of Specialisationmentioning

confidence: 95%

Effect of pollination strategy, phylogeny and distribution on pollination niches of Euro‐Mediterranean orchids

et al. 2018

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“…Despite the long history of studies on orchids, only a minute part of previous papers concerning potential and spatial distribution, niche conservatism, phytogeography, migration routes or conservation strategies of this taxonomic group included the use of species distribution models (e.g. Tsiftsis et al 2011;Angulo et al 2012;Kolanowska 2013;Wan et al 2014;Vogt-Schilb et al 2015;Hernandez-Ruiz et al 2016;Reina-Rodríguez et al 2016;Vollering et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Factors associated with the distributions of orchids in the Jeseníky Mountains, Czech Republic

Štípková

Romportl

Černocká

et al. 2017

European Journal of Environmental Sciences

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Species distribution models are a useful tool and are now often used in many branches of biology, especially when dealing with threatened organisms. In combination with GIS techniques, these models are especially important and valuable for predicting the occurrence of rare species, for example orchids. Orchids are an endangered plant group, protected worldwide. Questions about their conservation are therefore highly discussed, but not all factors affecting their survival and distribution are known. Here we present an example of using SDMs for analysing orchid species occurrence data from the Jeseníky Mountains in the Czech Republic. Our data were analysed using the MaxEnt program, which produces species distribution maps and thus allows the prediction of the potential occurrence of orchids at yet unknown localities. This program also determines the environmental factors affecting species distribution. This is important for the better protection of orchids, because only by knowing these factors can new localities be found or the management plans that are crucial for maintaining orchid localities be improved. We studied the most abundant orchid species in the given region. We determined the most important factors affecting their occurrence and also areas, where new sites are most likely to be discovered and depicted them in potential distribution maps. This approach can help in finding new localities of orchids and in understanding, which environmental factors influence the occurrence of endangered orchids.

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“…We have been observing severe biodiversity lossnot only on the global scale (Dirzo & Raven, 2003), but particularly on the regional and local scale (Sodhi et al, 2004;Biesmeijer et al, 2006;Vogt-Schilb et al, 2015). We have been observing severe biodiversity lossnot only on the global scale (Dirzo & Raven, 2003), but particularly on the regional and local scale (Sodhi et al, 2004;Biesmeijer et al, 2006;Vogt-Schilb et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Habitat preferences of the grasshopperPsophus stridulus, a charismatic species of submontane pastures

Rada

Spitzer

Šipoš

et al. 2017

Insect Conserv Diversity

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Semi‐natural habitats in Europe host a substantial proportion of biodiversity, but they experience biodiversity loss due to ongoing agricultural changes. We regard the Rattle grasshopper (Psophus stridulus) as a charismatic species of species‐rich submontane xerothermic grasslands. To enable conservation of the species and its habitat, we studied the habitat preferences of this formerly abundant grasshopper, now threatened and declining in many European countries. In 2011, we applied capture‐mark‐recapture method to sample adults at four localities (Czech Republic), each divided into two subplots with different management and character of vegetation. In 2012, we carried out a more extensive study on habitat preferences, evaluating 179 grassland patches (24% of them occupied by P. stridulus). For each site, we recorded vegetation characteristics (sward height and density, cover of vegetation components, percentage of bare ground), slope, inclination and agricultural management. We used multistate models in MARK software to analyse survival and movement probabilities between different subplots. Data from the 2012 large‐scale study were analysed by fitting several regression models. The results show that the species preferred south‐facing slopes with sparse, short vegetation and with patches of bare ground. Sward density was the most important predictor of species presence. For species conservation, we recommend controlling succession on the localities by regular management (grazing or cautious mowing) to maintain optimal habitat with sparse sward. We promote P. stridulus as a flagship and umbrella species of species‐rich submontane xerothermic pastures.

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Recent declines and range changes of orchids in Western Europe (France, Belgium and Luxembourg)

Cited by 49 publications

References 43 publications

Effect of pollination strategy, phylogeny and distribution on pollination niches of Euro‐Mediterranean orchids

Effect of pollination strategy, phylogeny and distribution on pollination niches of Euro‐Mediterranean orchids

Factors associated with the distributions of orchids in the Jeseníky Mountains, Czech Republic

Habitat preferences of the grasshopperPsophus stridulus, a charismatic species of submontane pastures

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