cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5061/dryad.37pvmcvhx
title: Phylogeny and systematics of Crescentieae (Bignoniaceae), a Neotropical clade of cauliflorous and bat-pollinated trees

description: The tribe Crescentieae includes Amphitecna (21 species), Crescentia (six
 species), and Parmentiera (10 species), three genera of understory trees
 with a center of diversity in Central America and a small number of
 species in the Antilles and northern South America. Species in
 Crescentieae are united by their fleshy, indehiscent fruit and
 cauliflorous, bat-pollinated flowers. The large fruits are presumed to
 have evolved to be mammal dispersed, although water dispersal is known to
 occur. To lay a foundation for examining morphological, ecological, and
 biogeographic patterns within the tribe, we inferred the phylogeny for
 Crescentieae using both chloroplast (ndhF, trnL-F) and nuclear markers
 (PepC, ITS). The most recent circumscription of Crescentieae, containing
 Amphitecna, Crescentia, and Parmentiera is supported by our phylogenetic
 results. Likewise, the sister relationship between Crescentieae and the
 Antillean-endemic Spirotecoma is also corroborated by our
 findings.  This relationship implies the evolution of fleshy and
 indehiscent fruits from dry and dehiscent ones, as well as the evolution
 of bat pollination from insect pollination. Fruits and seeds from species
 in Crescentieae are consumed by humans, ungulates, birds, and fish.
DOI: 10.5061/dryad.p8cz8w9np
title: Breeding and feeding habitat selection by an island endemic bird may increase its vulnerability to climate change

description: Characterising patterns of habitat use is an important first step for
 effective conservation planning.  Species restricted to low-lying
 islands are at greatest risk from climate change-related sea level rise,
 and requirements for breeding and foraging habitat may determine their
 risk from tidal inundation.  The endangered Micronesian Scrubfowl
 (Megapodius laperouse senex) is a model species for understanding these
 impacts.  This species faces the cumulative challenges of tourist
 visitation, invasive species, and rising sea levels, yet little is
 understood about its habitat use in the Rock Islands Southern Lagoon
 Conservation Area (RISL) of Palau.  We studied the habitat
 requirements of this mound-nesting scrubfowl as a representative of a
 group of birds considered highly vulnerable to climate change. 
 Analysis of 15 habitat variables at 24 incubation mounds and 26 randomly
 chosen sites indicated that scrubfowl selected incubation sites that were
 close to shore, contained large trees, and exhibited greater canopy
 heights than the surrounding forest.  Birds preferentially built
 mounds at the base of large ironwood trees (Casuarina equisetifolia) but
 selected sites with significantly more breadfruit trees (Artocarpus
 mariannensis) than random.  Scrubfowl foraged in a
 non-preferential manner, making use of all littoral strand forest
 habitat.  Direct anthropogenic habitat loss is not a major threat
 to scrubfowl in the RISL but their breeding habitat is highly vulnerable
 to climate change-driven sea level rise.
DOI: 10.15468/dl.25gps2
title: Occurrence Download

description: A dataset containing 114 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Christia australasica",
 "HasCoordinate is true",
 "BasisOfRecord is one of (Specimen)"
 ]
}

 The dataset includes 114 records from 11 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0002630-260126135527185/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5061/dryad.7wm37pvrk
title: Spatial mapping of root systems reveals diverse strategies of soil exploration and resource contest in grassland plants

description: 1. When foraging and competing for belowground resources, plants have to
 coordinate the behaviour of thousands of root tips in a manner similar to
 that of eusocial animal colonies. While well described in animals, we know
 little about the spatial behaviour of plants, particularly at the level of
 individual roots. 2. Here, we employed statistical methods previously used
 to describe animal ranging behaviour to examine root system overlap and
 the efficiency of root positioning in eight grassland species grown in
 monocultures and mixtures along a gradient of neighbour densities. 3.
 Species varied widely in their ability to distribute roots efficiently,
 with the majority of species showing significant root aggregation at very
 fine spatial scales. Extensive root system overlap was observed in species
 mixtures, indicating a lack of territoriality at the level of whole root
 systems. However, with increasing density of competitors, several species
 withdrew roots from the periphery of foraging ranges and increased
 intraplant root aggregation in the remaining area, which may indicate
 consolidation of foraging areas under competitive pressure. 4. Several
 species exhibited responses consistent with resource contest in species
 mixtures where encounters with competitors’ roots triggered increased root
 aggregation at the expense of foraging efficiency. Such responses only
 occurred in mixtures of species with comparable competitive abilities but
 were absent in asymmetric species combinations. 5. Synthesis. Combining
 fine-scale measurement of plant root distributions with spatial statistics
 yields new insights into plant behavioural strategies with significant
 potential to impact resource foraging efficiency and productivity.
DOI: 10.5061/dryad.gxd2547jp
title: Data from: Riparian hunting spiders do not rely on aquatic subsidies from intermittent alpine streams

description: Drying in alpine streams might decrease aquatic-terrestrial trophic
 linkages by reducing terrestrial predation on aquatic prey. We tested this
 hypothesis by investigating whether a common riparian predator (hunting
 spiders) in alpine environments assimilated a lower proportion of aquatic
 prey with increasing stream intermittency. We used high
 temporal-resolution data from electrical resistance sensors to map
 patterns of naturally-occurring flow intermittency across 30 headwater
 streams of Val Roseg, a glacierized catchment in the Swiss Alps. We
 collected riparian hunting spiders, as well as potential terrestrial and
 aquatic macroinvertebrate prey, from streams and their associated riparian
 zones across two seasons (Alpine spring and summer). We estimated aquatic
 contributions to spider diets (pA) using (i) a gradient approach with
 aquatic invertebrate and spider carbon stable isotope ratio values (δ13C),
 and (ii) Bayesian carbon and nitrogen (δ15N) isotope mixing models. Spider
 pA from the gradient method were not statistically different from zero in
 spring (0.08 ± 0.10) and low in summer (0.16 ± 0.04). Mixing models also
 estimated low dependence on aquatic prey in both seasons, although with
 potentially higher contributions in summer. Spider diet did not vary with
 increasing flow intermittency in either season. Our results suggested that
 alpine hunting spiders obtain most of their carbon from terrestrial prey.
 The slight increase in spider pA during summer may correlate with peak
 emergence periods for aquatic insects, indicating opportunistic feeding by
 this riparian predator.
description: Our paper presents an observational study of riparian hunting
 spiders along intermittent headwater streams in Val Roseg, a glacierized
 Alpine catchment, in June and August 2018. Flow intermittency was measured
 from July 2017 using electrical resistance sensors to log presence/absence
 of water. We collected spiders from the riparian zones of the streams in
 both June (Alpine spring) and August (Alpine summer), then estimated the
 relative contributions of emergent aquatic insects to spider diets using
 analysis of C and N stable isotopes. Information on data processing is
 summarised in the associated ReadMe file.
description: A ReadMe file (.txt) is included with metadata including
 descriptions of all data files, descriptions of variables, data formats,
 and units. Methods for data analysis can be found in the associated
 publication (Siebers et al. 2021).
DOI: 10.5061/dryad.djh9w0vz3
title: Multiple-scale negative impacts of warming on ecosystem carbon use efficiency across the Tibetan Plateau grasslands

description: Aim: Ecosystem carbon use efficiency (CUEe) is a core parameter of
 ecosystem process models, but its relationships with climate are still
 uncertain, especially for ecosystems with harsh environments. High
 inconsistencies in climate impacts on the CUEe have been reported among
 various spatial scales. The goal of this study was to examine whether
 warming promotes or restricts the CUEe and whether the CUEe responds to a
 warming gradient in a linear or nonlinear manner. Location: Tibetan
 Plateau. Time period: 2000-2018. Major taxa studied: Alpine grassland
 ecosystem. Methods: We integrated multiple-source data of carbon fluxes
 and CUEe, including warming experiments at a site scale, eddy covariance
 observations at a landscape scale and synthesized warming experiments and
 ecosystem process models at a regional scale. Next, we deployed a
 statistical model to examine the warming impacts on the CUEe across
 scales; the effects of biotic and abiotic factors on the CUEe and its
 components were summarized based on the results of Standardized Major Axis
 Tests and Routines, structural equation modeling and nonlinear models.
 Results: This study reported a suppressive warming impact on the CUEe,
 which followed a nonlinear curve with severe inhibition in the high-level
 warming treatment. With a warming threshold of 1.5-2.0 °C, CUEe response
 patterns transitioned from no change to a significant decrease. The
 restriction effects can be ascribed to the joint adverse and asymmetric
 effects of warming on CUEe components under multiple-level warming.
 Warming-modified relationships among CUEe components and the nonlinear
 effects of biotic and abiotic factors led to the nonlinear responses of
 CUEe to warming. Main conclusions: This study revealed suppressive and
 nonlinear effects of warming on the CUEe, including especially dramatic
 CUEe decreases with high-level warming. These findings are critical for
 optimizing model parameters and improving predictions of the carbon
 sequestration capacity of alpine grasslands.
DOI: 10.5061/dryad.80gb5mkpr
title: Data from: Intrinsic growth heterogeneity of mouse leukemia cells underlies differential susceptibility to a growth-inhibiting anticancer drug

description: Cancer cell populations consist of phenotypically heterogeneous
 cells. Growing evidence suggests that pre-existing phenotypic
 differences among cancer cells correlate with differential susceptibility
 to anticancer drugs and eventually lead to a relapse. Such
 phenotypic differences can arise not only externally driven by the
 environmental heterogeneity around individual cells but also internally by
 the intrinsic fluctuation of cells. However, the quantitative
 characteristics of intrinsic phenotypic heterogeneity emerging even under
 constant environments and their relevance to drug susceptibility remain
 elusive. Here we employed a microfluidic device, mammalian mother
 machine, for studying the intrinsic heterogeneity of growth dynamics of
 mouse lymphocytic leukemia cells (L1210) across tens of
 generations. The generation time of this cancer cell line had a
 distribution with a long tail and a heritability across
 generations. We determined that a minority of cell lineages exist
 in a slow-cycling state for multiple generations. These
 slow-cycling cell lineages had a higher chance of survival than the
 fast-cycling lineages under continuous exposure to the anticancer drug
 Mitomycin C. This result suggests that heritable heterogeneity in
 cancer cells' growth in a population influences their susceptibility
 to anticancer drugs.
description: Please refer to ReadMe.rtf for an explanation about the
 dataset.
DOI: 10.5061/dryad.bk3j9kd94
title: Differentially evolutionary pathways and their interactions in genes expressed in brain of human and macaque

description: As the key organ that separates human from other non-human primates, brain
 has continuously evolved to adapt to the changes of environments and
 climates. Although human shares most genetic, molecular and cellular
 features with primates like macaque, there are significant differences in
 the structure and function in brain of human and these species. Thus,
 exploring the differences between brains of human and non-human primates
 in the context of evolution will provide insights into the development,
 function and diseases of human nervous system. Since the genes involved in
 many aspects of human brain are under common pressures of natural
 selection, their evolutionary features can be analyzed collectively at
 pathway-level. In this study, we tried to explore the molecular mechanisms
 underlying human brain by comparing the evolutionary features of pathways
 enriched in genes expressed in human brain and macaque brain. We
 identified 31 differentially evolutionary pathways in the brain of human
 and macaque, among which included those related to neurological diseases,
 signaling transduction, immune and metabolism. By analyzing differentially
 expressed genes in brain regions and development stages between human and
 macaque, we also found that ten and four pathways with evolutionary
 differences, respectively. We further performed crosstalk analysis of
 pathways to obtain an intuitive correlation between the pathways, which is
 helpful to understand the mechanism of interaction between pathways. Our
 results shed light on a comprehensive view of the evolutionary pathways of
 the human nervous system and provide a reference for the study of human
 brain development.
description: This is a supplemtary figure showing the distribution of variance
 component corresponding to dN/dS or pN/pS of real and simulated pathways.
 Variance component for pathways was computed in the following way, i.e.,
 30 pathways (~10% of the 313 pathways analyzed) were randomly selected
 from the pathway set and the variance component due to differences between
 pathways of dN/dS (or pN/pS) was computed. Then, genes in the selected
 pathways were reshuffled and variance component corresponding to the
 simulated pathway sets were calculated based on the permuted dN/dS (or
 pN/pS) ratios. The procedure was repeated 5,000 times to construct the
 distribution of variance component of pathway set and the null
 distribution. If the genes in the same pathway do not share the same
 evolutionary properties, the distribution of the variance component due to
 differences between pathways should be similar to the null distribution.
 In each panel, the variance component of null distribution and real
 pathways are shown in dark and gray, respectively.
DOI: 10.5061/dryad.k3j9kd55n
title: Up in the air: threats to Afromontane biodiversity from climate change and habitat loss revealed by genetic monitoring of the Ethiopian Highlands bat

description: Whilst climate change is recognised as a major future
 threat to biodiversity, most species are currently threatened by extensive
 human-induced habitat loss, fragmentation and
 degradation. Tropical high altitude alpine and montane forest
 ecosystems and their biodiversity are particularly sensitive to
 temperature increases under climate change, but they are also subject to
 accelerated pressures from land conversion and degradation due to a
 growing human population. We studied the combined effects of anthropogenic
 land-use change, past and future climate changes and mountain range
 isolation on the endemic Ethiopian Highlands long-eared
 bat, Plecotus balensis, an understudied bat that is restricted to
 the remnant natural high altitude Afroalpine and Afromontane habitats. We
 integrated ecological niche modelling, landscape genetics and
 model-based inference to assess the genetic, geographic and
 demographic impacts of past and recent environmental changes. We show that
 mountain range isolation and historic climates shaped population structure
 and patterns of genetic variation, but recent anthropogenic land-use
 change and habitat degradation are associated with a severe population
 decline and loss of genetic diversity. Models predict that the suitable
 niche of this bat has been progressively shrinking since the last
 glaciation period. This study highlights threats to Afroalpine
 and Afromontane biodiversity, squeezed to higher altitudes under
 climate change while losing genetic diversity and suffering population
 declines due to anthropogenic land-use change. We conclude that the
 conservation of tropical montane biodiversity requires a holistic
 approach, using genetic, ecological and geographic information to
 understand the effects of environmental changes across temporal scales and
 simultaneously addressing the impacts of multiple threats.
description: This dataset is for 50 Bale long-eared bats, Plecotus balensis,
 captured in five moutnain ranges in Ethiopia 2014-2015 and genotyped
 for 19 polymorphic autosomal microsatellite loci previously developed for
 the genus (Razgour et al., 2013, Ecology Letters, https://doi.org/10.1111/ele.12158) and two mitochondrial DNA regions: 650 bp fragment of the gene cytochrome b (cytb) and 460 bp fragment of the hyper-variable region (HV1) of the control region. The microsatellite dataset is presented as genepop file. Sequence assembly of the concatenated cytochrome b and hyper-variable I region of the mitochondrial DNA is presented as .fasta file. The dataset also includes output of the Maxent species distribution models and STRUCTURE (Bayesian individual-based assignment tests) outputs.
DOI: 10.5061/dryad.63xsj3v15
title: Flightlessness in insects enhances diversification and determines assemblage structure across whole communities

description: Dispersal limitation has been recurrently suggested to shape both
 macroecological patterns and microevolutionary processes within
 invertebrates. However, because of potential interactions among
 biological, environmental, temporal, and spatial variables, causal links
 among flight-related traits, diversification and spatial patterns of
 community assembly remain elusive. Integrating genetic variation within
 species across whole insect assemblages, within a simplified spatial and
 environmental framework, can be used to reduce the impact of these
 potentially confounding variables. Here we used standardised sampling and
 mtDNA sequencing for a whole-community characterisation of the beetle
 fauna inhabiting a singular forested-habitat (laurel forest) within an
 oceanic archipelago setting (Canary Islands). The spatial structure of
 species assemblages together with species-level genetic diversity was
 compared at the archipelago and island scales for 104 winged and 110
 wingless beetle lineages. We found that wingless beetle lineages have (i)
 smaller range sizes at the archipelago scale, (ii) lower representation in
 younger island communities, (iii) stronger population genetic structure,
 and (iv) greater spatial structuring of species assemblages between and
 within islands. Our results reveal that dispersal limitation is a
 fundamental trait driving diversity patterns at multiple hierarchical
 levels by promoting spatial diversification and affecting the spatial
 configuration of entire assemblages at both island and archipelago scales.
description: The file Sequences contains all mtDNA sequences from the
 manuscript. The file README contains additional information for each
 individual.
DOI: 10.5061/dryad.08kprr51f
title: Ediacaran metazoan fossils with siliceous skeletons from the Digermulen Peninsula of Arctic Norway – Supplementary Data

description: In this study, a new assemblage of  Ediacaran metazoan fossils is
 reported from the basal Stáhpogieddi Formation on the Digermulen Peninsula
 of Arctic Norway, including Anulitubus n. gen. Moczydłowska in
 Moczydłowska et al., Anulitubus formosus n. gen. n. sp. Moczydłowska in
 Moczydłowska et al., Coniculus n. gen. Moczydłowska in Moczydłowska et
 al., Coniculus elegantis n. gen. n. sp. Moczydłowska in Moczydłowska et
 al., Fistula n. gen. Moczydłowska in Moczydłowska et al., Fistula
 crenulata n. gen. n. sp. Moczydłowska in Moczydłowska et al. The specimens
 are three-dimensionally preserved and include tubular and conical
 skeletons that are morphologically distinguished by their body wall
 constructions, radial symmetry, polarity, segmentation, and annulation.
 The skeletons are interpreted to be biomineralized by primary silica based
 on computed micro-tomographic, petrographic, geochemical and spectroscopic
 evidence of originally rigid body wall with layers of constant
 thicknesses, composed of opal, microcrystalline quartz and admixture of
 carbonaceous material, which differ from the host sediment mineralogy and
 do not show replacement or encrustation. The fossil-bearing interval
 immediately overlies strata of Gaskiers age and can be bracketed within
 580–541 Ma, but it is estimated to be ~575 Ma on the basis of averaged
 sedimentation rates and biostratigraphic correlations with Ediacaran biota
 found in up-section deposits of ~558–555 Ma. Future new findings of such
 fossils in different preservation modes and further multi-collector
 inductively coupled plasma mass spectrometry, which shows the silicon
 fractionation and trace its biogenic origin vs inorganic mineralization,
 may corroborate the interpretation of biogenic silicification of these
 earliest skeletal fossils.
description: The fossils were studied under a reflected light
 microscope (RLM), a transmitted andpolarized light microscope (PLM), an
 environmental scanning-transmission electron microscope (STEM) equipped
 with energy-dispersive X-ray detector for energy dispersive spectroscopy
 (STEM EDS), and a field emission electron probe microanalyzer (EMP) also
 equipped with EDS detector. Three-dimensional rendering and visualization
 of internal structures was also undertaken using a <i>Nikon H225
 ST</i> Micro-Computed Tomography (CT) at the University of Oslo
 (Supplementary Data). Petrographic thin-sectioning was also carried out
 with geochemical and acid tests, as well as STEM EDS, EMP EDS, and
 Laser-Raman spectroscopy to determine mineralization (Supplementary Data).
 The mineral composition of the surrounding mudstone matrix was examined
 using Laser-Raman spectroscopy and X-ray diffraction (XRD; Supplementary
 Data).