cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5061/dryad.0r20b
title: Data from: Geographical isolation and environmental heterogeneity contribute to the spatial genetic patterns of Quercus kerrii (Fagaceae)

description: Southwest China is one of the major global biodiversity hotspots. The
 Tanaka line, extending within southwestern China from its northwest to its
 southeast, is an important biogeographical boundary between the
 Sino-Japanese and Sino-Himalayan floristic regions. Understanding the
 evolutionary history of the regional keystone species would assist with
 both reconstructing historical vegetation dynamics and ongoing
 biodiversity management. In this research, we combined phylogeographic
 methodologies and species distribution models (SDMs) to investigate the
 spatial genetic patterns and distribution dynamics of Quercus kerrii, a
 dominant evergreen oak inhabiting southwest China lowland evergreen
 broadleaved forests (EBLFs). A total of 403 individuals were sampled from
 44 populations throughout southwest China. SDMs and mismatch distribution
 analysis indicated that Q. kerrii has undergone northward expansion since
 the Last Glacial Maximum (LGM). Quantitative analysis revealed that the
 range expansion of Q. kerrii since the LGM exceeded that of the sympatric
 mid-elevation species Quercus schottkyana, likely owing to their
 contrasting distribution elevations and habitat availabilities. The
 historical climate change since the LGM and the latitude gradient of the
 region played an important role in shaping the genetic diversity of Q.
 kerrii. The genetic differentiation index and genetic distance surface of
 Q. kerrii populations east of the Tanaka line exceeded those to its west.
 The long-term geographic isolation and environmental heterogeneity between
 the two sides of the Tanaka line might increase species divergence
 patterns and local adaptation. This study provides new insights into the
 historical dynamics of subtropical EBLFs and the changing biota of
 southwest China.
description: Quercus_kerrii_SSRSSR data for Quercus kerrii
DOI: 10.5061/dryad.1qs85
title: Data from: Predicting species’ vulnerability in a massively perturbed system: the fishes of Lake Turkana, Kenya

description: Background and Trophic Diversity Study: Lake Turkana is an understudied
 desert lake shared by Kenya and Ethiopia. This system is at the precipice
 of large-scale changes in ecological function due to climate change and
 economic development along its major inflowing river, the Omo River. To
 anticipate response by the fish community to these changes, we quantified
 trophic diversity for seven ecological disparate species (Alestes
 baremose, Hydrocynus forskalli, Labeo horie, Lates niloticus, Oreochromis
 niloticus, Synodontis schall, and Tilapia zillii) using stable isotopes.
 Based on their marked morphological differentiation, we postulated that
 dietary niches of these species would be similar in size but show little
 overlap. The degree of trophic diversity varied greatly among the species
 studied, refuting our hypothesis regarding dietary niche size. Oreochromis
 niloticus and L. niloticus had the highest trophic diversity and
 significantly larger dietary niches than T. zillii, A. baremose and H.
 forskalli. Low overlap among the dietary niches of the seven species, with
 the exception of the synodontid catfish S. schall, is consistent with our
 second hypothesis. Predicting Species’ Vulnerability: Breeding
 vulnerability was highest among those species with the lowest trophic
 diversity. We predict that in suffering two strikes against them, A.
 baremose, H. forskalli, T. zillii, and L. horie will be most affected by
 the highly altered Lake Turkana ecosystem and that O. niloticus, L.
 niloticus and S. schall will be least affected. Low vulnerability among O.
 niloticus and L. niloticus is promising for the future of the lake’s
 fishery, but the third most important fishery species (L. horie) will be
 highly vulnerable to impending ecosystem change. T. zillii should be
 treated as separate from O. niloticus in the fishery given higher
 sensitivity and a different ecological role. We see potential for
 expansion of the fishery for S. schall but don’t recommend the development
 of a fishery for A. baremose and H. forskalli.
description: LakeTurkana_KeyFishesIsotopeDataStable isotope (15N and 13C), site of collection and standard length data for seven fish species from Lake Turkana (Oreochromis niloticus, Lates niloticus, Tilapia zillii, Labeo horie, Synodontis schall, Alestes baremose, Hydrocynus forskalli)
DOI: 10.5061/dryad.v8d27
title: Data from: Replicated origin of female biased adult sex ratio in introduced populations of the Trinidadian guppy (Poecilia reticulata).

description: There are many theoretical and empirical studies explaining variation in
 offspring sex ratio but relatively few that explain variation in adult sex
 ratio. Adult sex ratios are important because biased sex ratios can be a
 driver of sexual selection and will reduce effective population size which
 affects population persistence and shapes how populations respond to
 natural selection. Previous work on guppies (Poecilia reticulata) gives
 mixed results, usually showing a female-biased adult sex ratio. However a
 detailed analysis showed that this bias varied dramatically throughout a
 year and with no consistent sex-bias. We used a mark-recapture approach to
 examine the origin and consistency of female-biased sex ratio in four
 replicated introductions. We show that female-biased sex ratio arises
 predictably and is a consequence of higher male mortality and longer
 female lifespans with little effect of offspring sex ratio.
 Inconsistencies with previous studies are likely due to sampling methods
 and sampling design which should be less of an issue with mark-recapture
 techniques. Together with other long-term mark-recapture studies, our
 study suggests that bias in offspring sex ratio rarely contributes to
 adult sex ratio in vertebrates. Rather, sex differences in adult survival
 rates and longevity determine vertebrate adult sex ratio.
description: Monthly guppy sex ratio
 dataData for four
 populations of guppies censused each month since fish were introduced.
 Includes adult sex ratio (ASR), recruitment sex ratio (RSR), ratio of fish
 missed in each census (miss), ratio of mortality rates (mort), and average
 age at death of each sex (M_lifespan, F_lifespan). Also includes 95%
 confidence intervals derived from Cormack-Jolly-Seber model in POPAN
 module of the program MARK.Dryad data
 files.xlsx
DOI: 10.5061/dryad.8596
title: Data from: Evolutionary advantage of small populations on complex fitness landscapes

description: Recent experimental and theoretical studies have shown that small asexual
 populations evolving on complex fitness landscapes may achieve a higher
 fitness than large ones due to the increased heterogeneity of adaptive
 trajectories. Here we introduce a class of haploid three-locus fitness
 landscapes that allow the investigation of this scenario in a precise and
 quantitative way. Our main result derived analytically shows how the
 probability of choosing the path of the largest initial fitness increase
 grows with the population size. This makes large populations more likely
 to get trapped at local fitness peaks and implies an advantage of small
 populations at intermediate time scales. The range of population sizes
 where this effect is operative coincides with the onset of clonal
 interference. Additional studies using ensembles of random fitness
 landscapes show that the results achieved for a particular choice of
 three-locus landscape parameters are robust and also persist as the number
 of loci increases. Our study indicates that an advantage for small
 populations is likely whenever the fitness landscape contains local
 maxima. The advantage appears at intermediate time scales, which are long
 enough for trapping at local fitness maxima to have occurred but too short
 for peak escape by the creation of multiple mutants.
description: con_ensC code for the simulation data (constrained ensemble simulations). For random number generations, ran3.c and bnldev.c from "Numerical Recipes in C" are used (these codes are not deposited in Dryad).timeauxiliary file which is necessary to run the code con_ens.c.
DOI: 10.34740/kaggle/dsv/14635062
title: Peer-to-Peer Boliviano (BOB) Exchange Data
DOI: 10.5061/dryad.tf173
title: Data from: The ‘plant economic spectrum’ in bryophytes, a comparative study in subalpine forest

description: PREMISE OF THE STUDY: Tradeoffs among functional traits of vascular plants
 are starting to be better understood, but it is unclear whether bryophytes
 possess similar tradeoffs or how trait relationships, or the ‘economic
 spectrum’, differ between the two groups. METHODS: We determined
 functional-trait values [including shoot mass per area (SMA),
 light-saturated assimilation rate (Amass), dark respiration rate (Rdmass),
 N and P concentrations (Nmass and Pmass), and photosynthetic N and P use
 efficiency (PNUE and PPUE)] and their bivariate relationships for 28
 bryophytes growing in a subalpine old-growth fir forest on the eastern
 Tibetan Plateau. Trait values and scaling relationships of these
 bryophytes were compared with data for vascular plant leaves from the
 Global Plant Trait Network (GLOPNET) dataset. KEY RESULTS: We found that
 the Amass, Nmass, N:P, PNUE and PPUE of bryophyte shoots were lower than
 those of vascular plant leaves. In contrast, bryophytes possessed higher
 Pmass and the two groups had similar values of SMA and Rdmass. The Nmass
 and Pmass were closely associated with Amass and Rdmass, and these traits
 were all significantly negatively related to SMA. Metabolic rates
 increased faster with nutrient concentrations in bryophytes than in
 vascular plants. CONCLUSIONS: Our research indicates that bryophytes have
 similar trait relationships as vascular plant leaves, although the slopes
 of the relationships differ for most trait combinations. This study
 confirms a functional-trait tradeoff in bryophytes, and reveals that
 bryophytes allocate greater proportions of N and P into the metabolic
 pools.
description: Functional traits of 28
 bryophytes living in a subalpine forestPhotosynthetic, nutrient
 and morphological traits of 28 bryophytes collected in an old-growth fir
 forest in Dagu Glacier Park of Heishui County in Sichuan Province,
 China.Heishui-28bryophytes4rep-170307.csv
DOI: 10.5061/dryad.gf680
title: Data from: New species of Franchia and Protozigzagiceras (Ammonoidea, Middle Jurassic): the phyletic origin of Zigzagiceratinae

description: Three genera and seven species belonging to the subfamily Zigzagiceratinae
 (family Perisphinctidae) are described from the Lower Bathonian of France
 and Saudi Arabia. Intraspecific dimorphism is recognized. A revision of
 the genus Franchia proposed by Sturani (1967), based on the syntypes and
 new specimens from south-east France, is presented. Franchia arkelli
 Sturani, Franchia subalpina sp. nov., Protozigzagiceras torrensi
 (Sturani), Protozigzagiceras tethycum sp. nov., Protozigzagiceras flexum
 sp. nov. and Protozigzagiceras densum sp. nov. are described from the
 Digne–Castellane region of south-east France. Megazigzagiceras
 subarabicum, gen. et sp. nov. is described from the Dharma region of Saudi
 Arabia. The successive Early Bathonian species of Franchia and
 Protozigzagiceras herein identified in West Tethyan areas, as members of
 the Mediterranean–Caucasian Subrealm, formed lasting separate
 peramorphoclines characterized by increasing hydrodynamic coiling of the
 shell. In contrast, rapid proterogenesis originated and diversified the
 earliest Bathonian zigzagiceratin lineages, giving paedomorphic members,
 commonly neotenic and more scarcely progenetic. Procerites–Siemiradzkia
 seems to be the oldest zigzagiceratin member in the French Subalpine,
 Iberian and Lusitanian basins, branched off by paedomorphosis from
 leptosphinctins at the Bajocian–Bathonian transition. The
 Mediterranean–Caucasian genera Franchia, Zigzagiceras, Zigzagites and
 Wagnericeras branched from successive species of Protozigzagiceras, in
 turn, a direct derivative of Procerites. The oldest lineages of the clade
 Zigzagiceratinae evolved by iterative, rapid, paedomorphic changes and
 additional, lasting, peramorphic modifications during the Early Bathonian.
description: Fernandez-Lopez_&_Pavia_measurements
DOI: 10.5061/dryad.kp59g3p
title: Data from: Human disturbance promotes herbivory by leaf-cutting ants in the Caatinga dry forest

description: Anthropogenic disturbances are known to modify plant-animal interactions
 such as those involving the leaf-cutting ants, the most voracious and
 proliferating herbivore across human-modified landscapes in the
 Neotropics. Here we evaluate the effect of chronic anthropogenic
 disturbance (e.g. firewood collection, livestock grazing) and vegetation
 seasonality on foraging area, foliage availability in the foraging area,
 leaf consumption, and herbivory rate of the leaf-cutting ant Atta
 opaciceps in the semi-arid Caatinga, a mosaic of dry forest and scrub
 vegetation in northeast Brazil. Contrary to our initial expectation, the
 foraging area was not affected by either disturbance intensity or the
 interaction between season and disturbance intensity. However, leaf
 consumption and herbivory rate were higher in more disturbed areas. We
 also found a strong effect of seasonality, with higher leaf consumption
 and herbivory rate in the dry season. Our results suggest that the
 foraging ecology of leaf-cutting ants is modulated by human disturbance
 and seasonality as these two drivers affect the spectrum and the amount of
 resources available for these ants in the Caatinga. Despite the low
 productivity of Caatinga vegetation, the annual rates of biomass
 consumption by A. opaciceps are similar to those reported from other
 leaf-cutting ants in rainforests and savannas. This is made possible by
 maintaining high foraging activity even in the peak of the dry season and
 taking benefit from any resource available, including low-quality items.
 Such compensation highlights the adaptive capacity of LCA to persist or
 even proliferate in human-modified landscapes from dry to rainforests.
description: Leaf-cutting ants,
 foraging area, leaf area index, vegetation availability, leaf consumption
 and herbivoryData_Siqueira et al
 2018.xlsx
DOI: 10.5061/dryad.gc2n2
title: Data from: Ethnically Tibetan women in Nepal with low hemoglobin concentration have better reproductive outcomes

description: Abstract Background and objectives: Tibetans have distinctively low
 hemoglobin concentrations at high altitudes compared with visitors and
 Andean highlanders. This study hypothesized that natural selection favors
 an unelevated hemoglobin concentration among Tibetans. It considered
 nonheritable sociocultural factors affecting reproductive success and
 tested the hypotheses that a higher percent of oxygen saturation of
 hemoglobin (indicating less stress) or lower hemoglobin concentration
 (indicating dampened response) associated with higher lifetime
 reproductive success. Methodology: We sampled 1006 post-reproductive
 ethnically Tibetan women residing at 3000–4100 m in Nepal. We collected
 reproductive histories by interviews in native dialects and noninvasive
 physiological measurements. Regression analyses selected influential
 covariates of measures of reproductive success: the numbers of
 pregnancies, live births and children surviving to age 15. Results: Taking
 factors such as marriage status, age of first birth and access to health
 care into account, we found a higher percent of oxygen saturation
 associated weakly and an unelevated hemoglobin concentration associated
 strongly with better reproductive success. Women who lost all their
 pregnancies or all their live births had hemoglobin concentrations
 significantly higher than the sample mean. Elevated hemoglobin
 concentration associated with a lower probability a pregnancy progressed
 to a live birth. Conclusions and implications: These findings are
 consistent with the hypothesis that unelevated hemoglobin concentration is
 an adaptation shaped by natural selection resulting in the relatively low
 hemoglobin concentration of Tibetans compared with visitors and Andean
 highlanders.
description: tibet_EMPHWe collected the data through interviews with ethnically Tibetan women in their native dialect. We used excel to create the 'csv' datafile. For variable names and codes, please refer to the ReadMe file.
DOI: 10.5061/dryad.p2p3f
title: Data from: Spatio-temporal changes in the structure of an Australian frog hybrid zone: a 40 year perspective

description: Spatio-temporal studies of hybrid zones provide an opportunity to test
 evolutionary hypotheses of hybrid zone maintenance and movement. We
 conducted a landscape genetics study on a classic hybrid zone of the
 south-eastern Australian frogs, Litoria ewingii and L. paraewingi. This
 hybrid zone has been comprehensively studied since the 1960s, providing
 the unique opportunity to directly assess changes in hybrid zone structure
 across time. We compared both mtDNA and male advertisement call data from
 two time periods (present and 1960s). Clinal analysis of the coincidence
 (same centre) and concordance (same width) of these traits indicated that
 the centre of the hybrid zone has shifted 1 km south over the last 40
 years, although the width of the zone and the rate of introgression
 remained unchanged. The low frequency of hybrids, the strong concordance
 of clines within a time period and the small but significant movement
 across the study period despite significant anthropogenic changes through
 the region, suggest the hybrid zone is a tension zone located within a low
 density trough. Hybrid zone movement has not been considered common in the
 past but our findings highlight that it should be considered a crucial
 component to our understanding of evolution.
description: Acoustic
 dataThe two tables presented
 here contain the acoustic data for all individuals used in the cline
 analysis. The modern and historic datasets are presented in separate
 tables. The site number and distance along the transect columns correspond
 with Table 1 in the paper. Acoustic data is recorded as Notes per Call
 (NC) and Pulse Number (PN). The resulting PC1 used in cline analyses is
 also presented. Samples that also had a tissue sample available have
 Museum Victoria Registration Numbers and their mitochondrial DNA results
 presented in the final two columns.
DOI: 10.5061/dryad.42tr5
title: Data from: Negative relationships between population density and metabolic rates are not general

description: Population density has recently been suggested to be an important factor
 influencing metabolic rates, and to represent an important ‘third axis’
 explaining variation beyond that explained by body mass and temperature.
 In situations where population density influences food consumption, the
 immediate effect on metabolism acting through specific dynamic action
 (SDA), and downregulation due to fasting over longer periods, is well
 understood. However, according to a recent review, previous studies
 suggest a more general effect of population density per se, even in the
 absence of such effects. It has been hypothesised that this results from
 animals performing anticipatory responses (i.e. reduced activity) to
 expected declines in food availability. Here we test the generality of
 this finding by measuring density effects on metabolic rates in 10 clones
 from two different species of the zooplankton Daphnia (Daphnia pulex
 Leydig and D. magna Straus). Using fluorescence-based respirometry we
 obtain high-precision measures of metabolism. We also identify additional
 studies on this topic that were not included in the previous review,
 compare the results, and evaluate the potential for measurement bias in
 all previous studies. We demonstrate significant variation in
 mass-specific metabolism among clones within both species. However, we
 find no evidence for a negative relationship between population density
 and mass-specific metabolism. The previously reported pattern also
 disappeared when we extended the set of studies analysed. We discuss
 potential reasons for the discrepancy among studies, including two main
 sources of potential bias (microbial respiration and declining oxygen
 consumption due to reduced oxygen availability). Only one of the previous
 studies gives sufficient information to conclude absence of such biases,
 and consistent with our results no effect of density on metabolism was
 found. We conclude that population density per se does not have a general
 effect on mass-specific metabolic rate.
description: Daphnia metabolic
 ratesMetabolic rate data from
 laboratory experiments on Daphnia magna and Daphnia
 pulexDryad
 data.xlsx
DOI: 10.5061/dryad.fn368
title: Data from: Intra- and interspecific niche variation as reconstructed from stable isotopes in two ecologically different Ethiopian Rift Valley lakes

description: 1. The concept of species niches has enhanced our understanding of
 community assembly and food web structure in a variety of ecosystem types.
 Niche-based species sorting profoundly determines community composition
 along strong environmental gradients, while interspecific interactions
 tend to be more important within habitats at local spatial scales. The
 role of intraspecific niche variation in community assembly and ecosystem
 functioning has only recently been highlighted. 2. The present study
 undertakes a quantitative comparison of the trophic structure of fish
 communities in two iconic Ethiopian Rift Valley lakes, Lake Abaya and Lake
 Chamo, which are biodiversity hotspots with high societal importance. The
 lakes differ strongly in ecology: whereas Lake Abaya is turbid due to a
 very high sediment loading, Lake Chamo is a clear-water lake, which in
 recent years is, however, rapidly becoming more turbid. Using stable
 isotopes, we compare the structure of the food web in both lakes, and
 investigate the degree to which differences in trophic structure between
 the two lakes are mediated by changes in species composition with fixed
 within-species niches or rather by flexibility in food acquisition within
 species. 3. Different food web compartments, including fish and the main
 basal sources, were sampled in both lakes. We used Bayesian stable isotope
 mixing models and Bayesian community-wide metrics for a quantitative
 comparison of the food web structure between the two lakes. 4. We
 demonstrate that the isotopic niche of the fish community in Lake Abaya is
 larger and more diversified compared to that in Lake Chamo. Sediment
 organic material seems to be a major energy source for fish in Abaya,
 while zooplankton is a dominant source for fish in Chamo. This is
 consistent with the different ecology of the two lakes, where high
 turbidity impedes primary and secondary production in Abaya. Differences
 in trophic structure between the two lakes resulted from intraspecific
 isotopic niche variation rather than from compositional variation between
 fish communities. 5. Our results point to the importance of intraspecific
 variation in feeding ecology of fish communities inhabiting two large
 Ethiopian Rift Valley Lakes with distinct environmental conditions. We
 anticipate that the approach we used has strong potential to explore
 large-scale patterns in food web organization in relation to niche
 variation across different types of ecosystems.
description: Lemmens et al.,
 Functional EcologyThis isotopic data of
 food web components and fish community data of Lake Abaya and Lake
 Chamo