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177 results for “native diversity”
Tree mixtures increase bird taxonomic and functional diversity over pure stands of tree species planted outside their natural range—but not over pure native stands
<p><span>Recent biodiversity loss has emphasized the necessity to critically evaluate the consequences of human alterations of forest ecosystems. Stand diversification via tree species mixtures and the use of non-native tree species are two such alterations currently gaining importance as climate change adaptations. However, the effects of local versus regional tree mixing on associated bio</span><span>diversity and notably the modifying role of tree species growing outside their natural range remain poorly understood. </span></p> <p><span>We assessed how monocultures and mixtures of native and introduced tree species influence the taxonomic and functional diversity of northwest German bird communities at stand and landscape scales. We focused on the dominant natural tree species (<em>Fagus sylvatica</em>) and economically important conifer species planted outside their natural range (the native <em>Picea abies</em> and non-native <em>Pseudotsuga menziesii</em>). </span></p> <p><span>We found that bird species richness and functional diversity were generally higher in pure and mixed stands of native <em>F. sylvatica</em> than in pure conifer stands, especially in comparison to non-native <em>P. menziesii</em>. These differences were particularly strong at the landscape scale. Pure conifer stands harbored only a reduced set of functionally similar bird species. Structural diversity based on tree microhabitat availability emerged as a key predictor of bird diversity. </span></p> <p><span>Synthesis and applications: Our study suggests that tree species mixtures do not necessarily increase bird diversity compared to pure stands of native trees, but can promote bird diversity relative to pure stands of species planted outside their natural range. Moreover, local mixtures, rather than a mosaic of pure stands, may promote bird diversity also at the landscape scale. By contrast, pure stands of tree species planted outside their natural range can increase the biotic homogenization of forest birds. Promoting structural diversity of microhabitats via tree retention and ensuring that non-native trees are planted in mixtures with native trees may alleviate potential limitations of climate change-oriented management for biodiversity. </span></p>
Data set: Native forest conversion alters soil macroinvertabrate diversity and soil quality in tropical mountain landscapes of northern Ecuador
<p>Data set an related material of the article entitled: Native forest conversion alters soil macroinvertabrate diversity and soil quality in tropical mountain landscapes of northern Ecuador</p>
Data from: Negative legacy effects of past forest use on native plant diversity in semi-natural grasslands on ski slopes
<p>We collected this data in Sugadaira and Minenohara Kogen in 2015, and in Kazawa, and Yunomaru in 2016. It was used for our paper titled "Negative legacy effects of past forest use on native plant diversity in semi-natural grasslands on ski slopes".</p>
Supplementary data set for Environmental DNA in lake sediment reveals biogeography of native diversity
<p>Illumina miseq data in geneious format.</p>
FIGURE 6 in Diversity and conservation of native Argentine species of Gratioleae (Plantaginaceae)
FIGURE 6. Map showing the geographical distribution of threatened Argentinean Gratioleae in relation to the existing protected areas in the country. Abreviations: NPIB=National Park Iberá, NPIG= National Park Iguazú, NPM= National Parks Mburucuyá, HCR= Ramsar Site Network.
FIGURE 4 in Diversity and conservation of native Argentine species of Gratioleae (Plantaginaceae)
FIGURE 4. Pie chart showing threat assessments for Argentinean species of Gratioleae based on IUCN red list categories. Number of taxa under each category (top), total proportion of taxa under each category (bottom). Abbreviations: (CR) Critically endangered, (EN) Endangered, (LC) Least concern, (NT) near threatened, (VU) Vulnerable.
FIGURE 2 in Diversity and conservation of native Argentine species of Gratioleae (Plantaginaceae)
FIGURE 2. Map showing the geographical distribution of Argentinean Gratioleae. A. General view of the study area. The line indicates the limit of the ecoregions according to Olson et al. (2001). B. Distribution of Argentinean genera of Gratioleae in relation to ecoregions.
Data from: Regional climate and local-scale biotic acceptance explain native-exotic diversity relationships in Australian annual plant communities
Native and exotic species richness is expected to be negatively related at small spatial scales where individuals interact, and positive at larger spatial scales as a greater variety of habitats are sampled. However, a range of native-exotic richness relationships (NERRs) have been reported, including positive at small scales and negative at larger scales. We present a hierarchical metacommunity framework to explain how contrasting NERRs may emerge across scales and study systems, and then apply this framework to NERRs in an invaded winter annual plant system in south-west Western Australia. We analysed NERRs at increasing spatial scales from neighbourhoods (0.09 m2) to communities (225 m2) to metacommunities (>10 ha) within a multi-level structural equation model. In contrast to many previous studies, native and exotic richness were positively related at the neighbourhood scale and were not significantly associated at larger scales. Heterogeneity in soil surface properties was weakly, but positively, associated with native and exotic richness at the community-scale. Metacommunity exotic richness increased strongly with regional temperature and moisture availability, but relationships for native richness were negative and much weaker. Thus, we show that neutral NERRs can emerge at larger scales due to differential climatic filtering of native and exotic species pools.
Data from: Standing genetic diversity and selection at functional gene loci are associated with differential invasion success in two non-native fish species
Invasive species are expected to experience a unique combination of high genetic drift due to demographic factors while also experiencing strong selective pressures. The paradigm that reduced genetic diversity should limit the evolutionary potential of invasive species and thus their potential for range expansion has received little empirical support, possibly due to the choice of genetic markers. Our goal was to test for effects of genetic drift and selection at functional genetic markers as they relate to the invasion success of two paired invasive goby species, one widespread (successful) and one with limited range expansion (less successful). We genotyped fish using two marker types: single nucleotide polymorphisms (SNPs) in known-function, protein-coding genes and microsatellites to contrast the effects of neutral genetic processes. We identified reduced allelic variation in the invaded range for the less-successful tubenose goby. SNPs putatively under selection were responsible for the observed differences in population structure between marker types for round goby (successful) but not tubenose goby (less successful). A higher proportion of functional loci experienced divergent selection for round goby, suggesting increased evolutionary potential in invaded ranges may be associated with round goby's greater invasion success. Genes involved in thermal tolerance were divergent for round goby populations but not tubenose goby, consistent with the hypothesis that invasion success for fish in temperate regions is influenced by capacity for thermal tolerance. Our results highlight the need to incorporate functional genetic markers in studies to better assess evolutionary potential for the improved conservation and management of species.
Supplementary material 1 from: Leonhardt F, Arranz Aveces C, Müller A, Angin B, Jegu M, Haynes P, Ernst R (2022) Low genetic diversity in a widespread whistling alien: A comparison of Eleutherodactylus johnstonei Barbour, 1914 (Eleutherodactylidae) and congeners in native and introduced ranges. NeoBiota 79: 31-50. https://doi.org/10.3897/neobiota.79.86778
Detailed information on all populations of the three congeneric taxa used in the molecular data sets of this study
Native diversity contributes to composition heterogeneity of exotic floras
<p>Variation in species composition among sites (beta diversity) is generally thought to be driven by environmental filtering and dispersal limitation but the role of biotic interactions has not been sufficiently addressed. Specifically, the early species in a local community may contribute to subsequent beta diversity patterns. Exotic assemblages within native communities provide a unique opportunity to study biotic interaction mechanisms. In this study, we conducted a field survey of plants over a ~1800 km transect in the middle and lower Yangtze River valley in China to study how native communities influence exotic beta diversity. The survey included 459 plots in 51 local plant communities with 40 exotic species and 103 co-occurring native species. We also investigated how 11 environmental factors involving climate conditions, soil properties and human activity regulate the interaction between native and exotic plants. The results showed that native diversity (Shannon-Wiener index) increased exotic beta diversity. Environmental conditions, especially monthly minimum temperature, influenced exotic beta diversity indirectly through native diversity rather than directly. Our results suggest that lower native diversity driven by environmental conditions, especially warmer temperatures, led to a decrease in composition heterogeneity of the exotic flora. Our results will help to incorporate biotic interactions into the framework of beta diversity mechanisms for local community assembly.</p>
Data from: Bees without flowers: before peak bloom, diverse native bees find insect-produced honeydew sugars
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Data from: Loss of genetic diversity and increased embryonic mortality in non-native lizard populations
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Data from: The making of a rapid plant invader: genetic diversity and differentiation in the native and invaded range of Senecio inaequidens
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Data from: Genetic analyses reveal cryptic diversity in the native North American fire ants (Hymenoptera: Formicidae: Solenopsis)
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Data from: An exotic invader drives the evolution of plant traits that determine mycorrhizal fungal diversity in a native competitor.
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Data from: Native plant diversity increases herbivory to non-natives
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Individual variation creates diverse migratory portfolios in native populations of a mountain ungulate
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Data from: Origin matters: diversity affects the performance of alien invasive species but not of native species
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Data from: Diversity patterns of native and exotic fish species suggest homogenization processes, but partly fail to highlight extinction threats
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.