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Your search keyword '"Bayesian joint species distribution models (JSDMs)"' showing total 4 results
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4 results on '"Bayesian joint species distribution models (JSDMs)"'

1. Flattening the curve: approaching complete sampling for diverse beetle communities.

Author

Burner, Ryan C., Birkemoe, Tone, Åström, Jens, and Sverdrup‐Thygeson, Anne

Subjects
*ENDANGERED species, *DECIDUOUS forests, *BEETLES, *MIXED forests, *SPECIES diversity
Abstract

Insects are a hyper diverse and ecologically important group. Their high diversity, however, presents challenges in sampling methodology, because rare species are unreliably detected with low sampling effort. However, the relationship between effort and species detections, critical for effective monitoring and evaluation of population trends, is too seldom quantified.We sampled forest beetles for 3 months in a 4‐ha stand of mixed deciduous forest in southeastern Norway using 110 flight intercept (four types) and Malaise traps, the highest trap density (29 traps ha−1) that we have seen reported. We examined species accumulation curves to quantify the benefits of each additional trap, compared capture rates among several trap designs and trap emptying frequencies, and tested for spatial autocorrelation.In total, we captured 566 beetle taxa (19 854 individuals) from 52 families, yet our species accumulation curve was only beginning to flatten. Trap types differed considerably in their effectiveness. Nevertheless, 20 of our most effective window traps detected 75% of all taxa in our dataset. We found no evidence of spatial correlation within the scale of the study (100 m radius), nor did trap‐level forest covariates (5 m radius) explain much variation.This implies that low‐to‐moderate sampling effort dramatically underestimates species richness, but that a limited number of effective traps can nonetheless achieve relatively thorough sampling for some applications. Immediate trap surroundings and spacing appeared unimportant. Insect ecologists should take particular care in selecting trap types, and be cautious comparing studies that employed different trap types. [ABSTRACT FROM AUTHOR]

Published
2022
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2. Traits mediate niches and co-occurrences of forest beetles in ways that differ among bioclimatic regions.

Author

Burner, Ryan C., Stephan, Jörg G., Drag, Lukas, Birkemoe, Tone, Muller, Jörg, Snäll, Tord, Ovaskainen, Otso, Potterf, Mária, Siitonen, Juha, Skarpaas, Olav, Doerfler, Inken, Gossner, Martin M., Schall, Peter, Weisser, Wolfgang W., and Sverdrup-Thygeson, Anne

Subjects
*HIERARCHICAL Bayes model, *BEETLES, *SPECIES distribution, *TEMPERATE forests, *TAIGAS, *PHYSIOLOGICAL adaptation, *PREDICTION models
Abstract

Aim: The aim of this study was to investigate the role of traits in beetle community assembly and test for consistency in these effects among several bioclimatic regions. We asked (1) whether traits predicted species' responses to environmental gradients (i.e. their niches), (2) whether these same traits could predict co-occurrence patterns and (3) how consistent were niches and the role of traits among study regions. Location: Boreal forests in Norway and Finland, temperate forests in Germany. Taxon: Wood-living (saproxylic) beetles. Methods: We compiled capture records of 468 wood-living beetle species from the three regions, along with nine morphological and ecological species traits. Eight climatic and forest covariates were also collected. We used Bayesian hierarchical joint species distribution models to estimate the influence of traits and phylogeny on species' niches. We also tested for correlations between species associations and trait similarity. Finally, we compared species niches and the effects of traits among study regions. Results: Traits explained some of the variability in species' niches, but their effects differed among study regions. However, substantial phylogenetic signal in species niches implies that unmeasured but phylogenetically structured traits have a stronger effect. Degree of trait similarity was correlated with species associations but depended idiosyncratically on the trait and region. Species niches were much more consistent--widespread taxa often responded similarly to an environmental gradient in each region. Main conclusions: The inconsistent effects of traits among regions limit their current use in understanding beetle community assembly. Phylogenetic signal in niches, however, implies that better predictive traits can eventually be identified. Consistency of species niches among regions means niches may remain relatively stable under future climate and land use changes; this lends credibility to predictive distribution models based on future climate projections but may imply that species' scope for short-term adaptation is limited. [ABSTRACT FROM AUTHOR]

Published
2021
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3. Traits mediate niches and co‐occurrences of forest beetles in ways that differ among bioclimatic regions

Author

Mária Potterf, Lukas Drag, Tone Birkemoe, Martin M. Gossner, Peter Schall, Wolfgang W. Weisser, Ryan C. Burner, Otso Ovaskainen, Juha Siitonen, Joerg Muller, Anne Sverdrup-Thygeson, Jörg G. Stephan, Inken Doerfler, Tord Snäll, Olav Skarpaas, Organismal and Evolutionary Biology Research Programme, Biosciences, and Otso Ovaskainen / Principal Investigator

Subjects
0106 biological sciences, Bayesian joint species distribution models (JSDMs), Species distribution, MODELS, Dead wood, Climate change, UNCERTAINTY, phylogeny, 010603 evolutionary biology, 01 natural sciences, Phylogenetics, SPECIES DISTRIBUTION, DISTRIBUTIONS, saproxylic beetles, environmental gradients, Ecology, Evolution, Behavior and Systematics, Ecological niche, kovakuoriaiset, SAPROXYLIC BEETLES, fylogenia, Ecology, 010604 marine biology & hydrobiology, bayesilainen menetelmä, BIOTIC INTERACTIONS, climate change, Coleoptera, ecological traits, HMSC, morphological traits, species associations, 15. Life on land, ilmastonmuutokset, ekologinen lokero, Geography, FUNCTIONAL TRAITS, 1181 Ecology, evolutionary biology, PATTERNS, DEAD-WOOD, ympäristönmuutokset, RESPONSES
Abstract

Aim The aim of this study was to investigate the role of traits in beetle community assembly and test for consistency in these effects among several bioclimatic regions. We asked (1) whether traits predicted species’ responses to environmental gradients (i.e. their niches), (2) whether these same traits could predict co-occurrence patterns and (3) how consistent were niches and the role of traits among study regions. Location Boreal forests in Norway and Finland, temperate forests in Germany. Taxon Wood-living (saproxylic) beetles. Methods We compiled capture records of 468 wood-living beetle species from the three regions, along with nine morphological and ecological species traits. Eight climatic and forest covariates were also collected. We used Bayesian hierarchical joint species distribution models to estimate the influence of traits and phylogeny on species’ niches. We also tested for correlations between species associations and trait similarity. Finally, we compared species niches and the effects of traits among study regions. Results Traits explained some of the variability in species’ niches, but their effects differed among study regions. However, substantial phylogenetic signal in species niches implies that unmeasured but phylogenetically structured traits have a stronger effect. Degree of trait similarity was correlated with species associations but depended idiosyncratically on the trait and region. Species niches were much more consistent—widespread taxa often responded similarly to an environmental gradient in each region. Main conclusions The inconsistent effects of traits among regions limit their current use in understanding beetle community assembly. Phylogenetic signal in niches, however, implies that better predictive traits can eventually be identified. Consistency of species niches among regions means niches may remain relatively stable under future climate and land use changes; this lends credibility to predictive distribution models based on future climate projections but may imply that species’ scope for short-term adaptation is limited. ISSN:0305-0270 ISSN:1365-2699

Published
2021

4. Traits mediate niches and co-occurrences of forest beetles in ways that differ among bioclimatic regions

Author

Burner, Ryan C., Stephan, Jörg G., Drag, Lukas, Birkemoe, Tone, Muller, Jörg, Snäll, Tord, Ovaskainen, Otso, Potterf, Maria, Siitonen, Juha, Skarpaas, Olav, Doerfler, Inken, Gossner, Martin M., Schall, Peter, Weisser, Wolfgang W., and Sverdrup-Thygeson, Anne

Subjects
Coleoptera, climate change, Bayesian joint species distribution models (JSDMs), morphological traits, 15. Life on land, saproxylic beetles, ecological traits, phylogeny, species associations, environmental gradients, HMSC
Abstract

Aim The aim of this study was to investigate the role of traits in beetle community assembly and test for consistency in these effects among several bioclimatic regions. We asked (1) whether traits predicted species’ responses to environmental gradients (i.e. their niches), (2) whether these same traits could predict co-occurrence patterns and (3) how consistent were niches and the role of traits among study regions. Location Boreal forests in Norway and Finland, temperate forests in Germany. Taxon Wood-living (saproxylic) beetles. Methods We compiled capture records of 468 wood-living beetle species from the three regions, along with nine morphological and ecological species traits. Eight climatic and forest covariates were also collected. We used Bayesian hierarchical joint species distribution models to estimate the influence of traits and phylogeny on species’ niches. We also tested for correlations between species associations and trait similarity. Finally, we compared species niches and the effects of traits among study regions. Results Traits explained some of the variability in species’ niches, but their effects differed among study regions. However, substantial phylogenetic signal in species niches implies that unmeasured but phylogenetically structured traits have a stronger effect. Degree of trait similarity was correlated with species associations but depended idiosyncratically on the trait and region. Species niches were much more consistent—widespread taxa often responded similarly to an environmental gradient in each region. Main conclusions The inconsistent effects of traits among regions limit their current use in understanding beetle community assembly. Phylogenetic signal in niches, however, implies that better predictive traits can eventually be identified. Consistency of species niches among regions means niches may remain relatively stable under future climate and land use changes; this lends credibility to predictive distribution models based on future climate projections but may imply that species’ scope for short-term adaptation is limited., Journal of Biogeography, 48 (12), ISSN:0305-0270, ISSN:1365-2699

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