Deconstructing responses of dragonfly species richness to area, nutrients, water plant diversity and forestry

Honkanen, Merja; Sorjanen, Aili-Maria; Mönkkönen, Mikko

doi:10.1007/s00442-010-1846-3

Cited by 31 publications

(25 citation statements)

References 29 publications

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“…The sedentary habitat specialist C. mercuriale (Rouquette and Thompson 2004, Watts et al 2004b showed the lowest level of gene flow and the strongest genetic substructuring, where an impact of the Pyrenees was traceable in patterns of both substructuring and gene migration. Coenagrion pulchellum is the largest and most widespread of the species in this study, it is considered a dispersal prone habitat generalist (similar to C. puella) but it exists in lower local abundances than for example C. johanssoni (Honkanen et al 2011) and C. puella (Conrad et al 1999). The two northern species, C. armatum and C. johanssoni were similar in levels of gene flow.…”

Section: Genetic Diversity and Differentiationmentioning

confidence: 75%

“…Most enigmatic was C. pulchellum, with relatively low levels of gene flow and complicated population substructuring. Coenagrion pulchellum is the largest and most widespread of the species in this study, it is considered a dispersal prone habitat generalist (similar to C. puella) but it exists in lower local abundances than for example C. johanssoni (Honkanen et al 2011) and C. puella (Conrad et al 1999). Finally, when comparing across species, there were again no strong general trends emerging, for example, the largest and the smallest species had the strongest substructuring (C. pulchellum and C. mercuriale, respectively), the sampled ranges of the two largest species, C. pulchellum and C. puella differed by very little, yet their overall genetic differentiation levels (based on F ST values) and patterns of substructure were very different.…”

Section: Genetic Diversity and Differentiationmentioning

confidence: 93%

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Large‐scale patterns in genetic variation, gene flow and differentiation in five species of European Coenagrionid damselfly provide mixed support for the central‐marginal hypothesis

et al. 2013

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Recently, an increased effort has been directed towards understanding the distribution of genetic variation within and between populations, particularly at central and marginal areas of a species' distribution. Much of this research is centred on the central-marginal hypothesis, which posits that populations at range margins are sparse, small and genetically diminished compared to those at the centre of a species' distribution range. We tested predictions derived from the centralmarginal hypothesis for the distribution of genetic variation and population differentiation in five European Coenagrionid damselfly species. We screened genetic variation (microsatellites) in populations sampled in the centre and margins of the species' latitudinal ranges, assessed genetic diversity (H S ) in the populations and the distribution of this genetic diversity between populations (F ST ). We further assessed genetic substructure and migration with Bayesian assignment methods, and tested for significant associations between genetic substructure and bioclimatic and spatial (altitude and latitude) variables, using general linearized models. We found no general adherence to the central-marginal hypothesis; instead we found that other factors such as historical or current ecological factors often better explain the patterns uncovered. This was illustrated in Coenagrion mercuriale whose colonisation history and behaviour most likely led to the observation of a high genetic diversity in the south and lower genetic diversity with increasing latitude, and in C. armatum and C. pulchellum whose patterns of low genetic diversity coupled with the weakest genetic differentiation at one of their range margins suggested, respectively, possible range shifts and recent, strong selection pressure.For many species there exists detailed information on distribution ranges, and in some cases also historical distribution records. However, how and why these ranges are maintained, and under what conditions and by which mechanism they change, is highly speculative (Bridle and Vines 2006, Sagarin et al. 2006, Sexton et al. 2009). There has recently been increased interest in range margin dynamics due to global climate change, because species can respond to climate change and ensure their persistence through moving their ranges or adapting in situ (Parmesan et al. 2005). A critical issue in this context is that of population dynamics at range margins, and if they are akin to dynamics in central populations, because of their potential importance for genetic adaptation (Bridle and Vines 2006).The central-marginal hypothesis (Hengeveld and Haeck 1982, Brussard 1984) assumes that populations are most abundant and have higher densities where conditions are optimal for growth, and that populations become smaller and scarcer towards their range margins; since survival and growth becomes more arduous with increasing distance from the environmental optimum (Sagarin and Gaines 2002, Eckert et al. 2008. Based on this, the central-marginal hypothesis makes two pred...

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Section: Genetic Diversity and Differentiationmentioning

confidence: 75%

Section: Genetic Diversity and Differentiationmentioning

confidence: 93%

Large‐scale patterns in genetic variation, gene flow and differentiation in five species of European Coenagrionid damselfly provide mixed support for the central‐marginal hypothesis

et al. 2013

View full text Add to dashboard Cite

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“…Since then, several studies have formally used this approach (e.g. see Krasnov et al, 2010;Honkanen et al, 2011;Azeria et al, 2011; for recent studies). In general, these studies start with very large taxonomic groups (e.g.…”

Section: Introductionmentioning

confidence: 99%

Geographical patterns of Triatominae (Heteroptera: Reduviidae) richness and distribution in the Western Hemisphere

Diniz‐Filho

Ceccarelli

Hasperué

et al. 2013

Insect Conserv Diversity

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Broad‐scale spatial patterns in species richness have been widely investigated with spatial statistics tools in the past few years. The primary goal of these investigations has been to understand the ecological and evolutionary processes underlying such patterns. Nevertheless, most of the current (climate) explanations for these patterns actually rely on the geographical range limits of species, so that a better understanding of such processes may be achieved by coupling richness and distribution (niche) models. We analysed the geographical ranges and richness patterns for 115 triatomine species in the Neotropics, modelled as a function of 12 environmental variables expressing alternative hypotheses that have been used to explain richness gradients. These analyses were based on spatial [spatial eigenvector mapping (SEVM)] and non‐spatial ordinary least‐squares multiple regression models. The geographical ranges of species were also individually analysed using a general linear model (GLM). The coefficients of the regression models for richness and distribution were then compared. Spatial analyses revealed that the unique contributions of spatial eigenvectors and environmental variables to richness were, respectively, equal to 24.2% and 12.2%, with high coefficient values for temperature, actual evapotranspiration, and seasonality. Similar results were obtained using a GLM, and the mean GLM coefficients had a relatively high correlation with those obtained with SEVM (r = 0.586; P < 0.05). Our analyses show that the drivers of Neotropical Triatominae richness and of its species ranges show a high correlation, although the differences among the drivers may be important for understanding the emergent properties (historical processes and species‐specific environmental drivers) that explain richness patterns. Moreover, although our analyses identified an important role for temperature and temperature seasonality in explaining both species richness and distributions, other spatially structured environmental variables and historical factors may explain a large part of the variation in diversity patterns.

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“…In addition to water quality drainage results in inevitable changes in vegetation patterns [12,15]. This may affect Odonata as they use vegetation for multiple purposes such as for hunting or shelter [37], and a positive relationship between Odonata and plant species richness have been found at multiple spatial scales [38-40]. However, the fact that in some sites Odonata species respond rapidly to restoration suggests that vegetation patterns are not at least the main reason for diminished abundance in drained sites as the response of vegetation to restoration are generally rather slow [11,16,19].…”

Section: Discussionmentioning

confidence: 99%

The effect of peatland drainage and restoration on Odonata species richness and abundance

2015

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BackgroundRestoration aims at reversing the trend of habitat degradation, the major threat to biodiversity. In Finland, more than half of the original peatland area has been drained, and during recent years, restoration of some of the drained peatlands has been accomplished. Short-term effects of the restoration on peatland hydrology, chemistry and vegetation are promising but little is known about how other species groups apart from vascular plants and bryophytes respond to restoration efforts.ResultsHere, we studied how abundance and species richness of Odonata (dragonflies and damselflies) respond to restoration. We sampled larvae in three sites (restored, drained, pristine) on each of 12 different study areas. We sampled Odonata larvae before restoration (n = 12), during the first (n = 10) and the third (n = 7) year after restoration and used generalized linear mixed models to analyze the effect of restoration. Drained sites had lower abundance and species richness than pristine sites. During the third year after restoration both abundance and species richness had risen in restored sites.ConclusionsOur results show that Odonata suffer from drainage, but seem to benefit from peatland restoration and are able to colonize newly formed water pools already within three years after restoration.Electronic supplementary materialThe online version of this article (doi:10.1186/s12898-015-0042-z) contains supplementary material, which is available to authorized users.

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Deconstructing responses of dragonfly species richness to area, nutrients, water plant diversity and forestry

Cited by 31 publications

References 29 publications

Large‐scale patterns in genetic variation, gene flow and differentiation in five species of European Coenagrionid damselfly provide mixed support for the central‐marginal hypothesis

Large‐scale patterns in genetic variation, gene flow and differentiation in five species of European Coenagrionid damselfly provide mixed support for the central‐marginal hypothesis

Geographical patterns of Triatominae (Heteroptera: Reduviidae) richness and distribution in the Western Hemisphere

The effect of peatland drainage and restoration on Odonata species richness and abundance

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