Find research datasets worth reusing

FIGURE 1 in Additions to the Tanaidacea (Crustacea: Peracarida) of Rangitâhua, the Kermadec Islands, from the Southwest Pacific Expedition 2017

FIGURE 1. Rangitâhua-Kermadec Islands sector of the SWP2017 survey indicating location of sampling sites yielding Tanaidacea (red arrows). Map based on chart NZ222 from Land Information New Zealand and Figure 1 in Trnski & de Lange (2015), courtesy of Hamish MacDonald.

FIGURE 9. Psalidichelia concinna n. g. n in Additions to the Tanaidacea (Crustacea: Peracarida) of Rangitâhua, the Kermadec Islands, from the Southwest Pacific Expedition 2017

FIGURE 9. Psalidichelia concinna n. g. n. sp. male allotype (AIM MA73614). A, habitus (antennule flagellum setation simplified), dorsal; B, cephalothorax anterior, rostrum, C, pleon, dorsal. Male paratype (AIM MA73613).D, right antennule, numbers indicate aesthetascs not figured for clarity; E, antenna; F right cheliped, lateral; G, left chela, mesial. Scale bars: 1 mm for A; 0.125 mm for B–G.

FIGURE 6. Psalidichelia concinna n. g. n in Additions to the Tanaidacea (Crustacea: Peracarida) of Rangitâhua, the Kermadec Islands, from the Southwest Pacific Expedition 2017

FIGURE 6. Psalidichelia concinna n. g. n. sp. non-ovigerous female holotype (AIM MA73608). A, habitus, dorsal; B, pleotelson. Non-ovigerous female paratype (AIM MA73612). C, antennule; D, antenna; E, cephalothorax-cheliped, lateral; F, uropod. Scale bars: 0.5 mm for A; 0.25 mm for B–F.

FIGURE 12 in Additions to the Tanaidacea (Crustacea: Peracarida) of Rangitâhua, the Kermadec Islands, from the Southwest Pacific Expedition 2017

FIGURE 12. Comparative size of Rangitâhua-Kermadecs shallow-water tanaids based on holotype or representative specimens. A, Chondrochelia acrolophus; B, Aparatanais tetradonta; C, Zeuxo kermadecensis; D, Paradoxapseudes floppae; E, Psalidichelia concinna; F, Metatanais progenitor; G, Tanais sp.; H, Collettea coralensis; I, leptocheliid LK#1. Scale bars: 1 mm for all.

FIGURE 2. Collettea coralensis n in Additions to the Tanaidacea (Crustacea: Peracarida) of Rangitâhua, the Kermadec Islands, from the Southwest Pacific Expedition 2017

FIGURE 2. Collettea coralensis n. sp. non-ovigerous female holotype (AIM MA73607). A, habitus, dorsal; B, habitus, lateral, pereopods omitted for clarity; C, pleonite-5 dorsum; D, pleotelson, ventral; E, antennule; F, uropod. Non-ovigerous female paratype (AIM MA73610). G, antenna, lateral. Scale bars: 0.5 mm for A–B; 0.25 mm for C; 0.125 mm for D–F.

FIGURE 11 in Additions to the Tanaidacea (Crustacea: Peracarida) of Rangitâhua, the Kermadec Islands, from the Southwest Pacific Expedition 2017

FIGURE 11. Leptocheliid RK#1 non-ovigerous female (P.105594). A, habitus; B, pleon, lateral (pleopods omitted for clarity); C, eyelobe and antennule, lateral; D, antennule; E, right cheliped; F, pereopod-1; G, uropod. Scale bars: 0.5 mm for A; 0.125 mm for B–G.

FIGURE 8. Psalidichelia concinna n. g. n in Additions to the Tanaidacea (Crustacea: Peracarida) of Rangitâhua, the Kermadec Islands, from the Southwest Pacific Expedition 2017

FIGURE 8. Psalidichelia concinna n. g. n. sp. non-ovigerous female paratype (AIM MA73612). A–F, pereopods 1–6 respectively; G, pleopod peduncle; H, pleopod endopod; I, pleopod exopod. Scale bars: 0.125 mm for all.

FIGURE 5. Collettea coralensis n in Additions to the Tanaidacea (Crustacea: Peracarida) of Rangitâhua, the Kermadec Islands, from the Southwest Pacific Expedition 2017

FIGURE 5. Collettea coralensis n. sp. juvenile male paratype (AMS 105579). A, habitus, dorsal; B, pleon, lateral; C, antennule; D, uropod. Scale bars: 0.5 mm for A; 0.25 mm for B; 0.125 mm for C–D.

FIGURE 3 Scaphidium formosanum Pic. A‒B. Habitus, male. C. Metaventrite, male. D. Antenna. E in Two new species of the genus Scaphidium Olivier (Coleoptera: Staphylinidae Scaphidiinae) from Southwest China

FIGURE 3 Scaphidium formosanum Pic. A‒B. Habitus, male. C. Metaventrite, male. D. Antenna. E. Front leg in ventral view, male. F. habitus, female. G‒H. Aedeagus. I. Internal sac in detail. Scales: A‒C, E‒F = 1 mm; D, G‒I = 0.2mm.

FIGURE 2 in Two new species of the genus Scaphidium Olivier (Coleoptera: Staphylinidae Scaphidiinae) from Southwest China

FIGURE 2 Scaphidium russipenne sp. nov. A‒B. Habitus, female. C. Antenna. D. Front leg in ventral view. Scales: A‒B, D = 1 mm; C = 0.5mm.

FIGURE 1 in Two new species of the genus Scaphidium Olivier (Coleoptera: Staphylinidae Scaphidiinae) from Southwest China

FIGURE 1 Scaphidium rhopaliparamerosum sp. nov. A‒B. Habitus, male. C. Metaventrite, male. D. Antenna. E. Front leg in ventral view male. F‒G. Aedeagus. H. Internal sac in detail. Scales: A‒C, E = 1 mm; D, F‒H = 0.2mm.

opencc-by-4.0Jan 2021View details →

Linking Seasonal-to-Interannual Variability of Intermediate Currents in the Southwest Tropical Pacific to Wind Forcing and ENSO

This dataset contains zonal velocity data observed by the mooring at 142E/0,142E,1S,141.4E/1.7S. It is supplementary of the paper "Linking Seasonal-to-Interannual Variability of Intermediate Currents in the Southwest Tropical Pacific to Wind Forcing and ENSO" published by the Geophysical Research Letters (https://doi.org/10.1029/2021GL092440). Please let me know if you need any more information.

opencc-zeroDec 2018View details →

Data from: Substrate and spatial variables are major determinants of fungal community in karst caves in Southwest China

Aim: Previous studies primarily based on the culture method have revealed that caves host a high fungal diversity and that exogenous carbon sources influence fungal communities. Here, we assess the fungal diversity and distribution patterns in karst caves in Southwest China and reveal the major factors that shape the fungal communities. Location: Southwest China. Methods: Samples of air, rock, sediment, and water were collected from eight caves in Southwest China. Using high-throughput sequencing of the internal transcribed spacer 1 region of fungal rDNA, we examined the cave fungal communities in Southwest China and studied their correlations with potentially influential factors, such as substrate, cave, location and environmental variables. Results: Approximately 10,000 fungal operational taxonomic units (OTUs) spanning 15 phyla were obtained. The highest diversity genus was Penicillium, while Mortierella had the highest relative abundance. Compared with air and rock samples, sediment and water samples harboured higher diversity and distinct communities. Substrate and cave were revealed to be the key determinants of the fungal communities in caves. Sample location and sampling distance from the entrance had more significant impacts on rock and sediment communities than on air and water assemblages. The fungal assemblages in air and water samples from the cave and outside cave environments were similar, while those of rock and sediment samples were significantly different. Main conclusions: Our results indicate that sediment and water harboured higher fungal diversity than air and rock, and substrate and spatial variables are key determinants of fungal communities in caves.

opencc-zeroSep 2019View details →

Data from: The response of mixed-species bird flocks to anthropogenic disturbance and elevational variation in southwest China

Avian mixed-species flocks (MSFs) are an important example of species interactions threatened by the biodiversity crisis. They are found throughout the world in forested habitats, but are generally reduced in size or frequency by human disturbance. In southern China, a unique MSF system has been described that is led by fulvettas (Alcippe morrisonia, A. hueti and A. davidi). Our objective was to understand how this system is distributed across elevational gradients, especially moving west into the Hengduan Mountains, and how it responds to human disturbance. We sampled leadership and composition of 375 MSFs over 2 years in and surrounding 5 nature reserves in Guangxi Zhuang Autonomous Region and Yunnan Province, with transects placed in different land use types – protected forest, buffer areas, or agriculture – and ranging from 400 to 3200 m. We also sampled birds outside of MSFs. We found MSFs led by fulvettas (A. fratercula and A. davidi) in forests across the region up to 2900 m. Elevation was not a significant influence on MSF size or prevalence in models that also included land use. We found that MSFs were encountered at only 1/3 of the frequency in agriculture as in forest, and had strongly different composition and leadership. Although MSFs in buffer areas more similar to those in forest, birds in buffer had lower flocking propensity with different flock leaders and less complex social networks. In particular, buffer transects that were seeded pine had low numbers of fulvetta-led MSFs and forest specialists. In the future, it is important to understand which vegetational characteristics allow MSFs, particularly fulvetta-led MSFs, to persist in buffer habitats.

opencc-zeroDec 2014View details →

Data from: Effects of the early Toarcian Oceanic Anoxic Event on ichthyosaur body size and faunal composition in the Southwest German Basin

The Early Jurassic Toarcian Oceanic Anoxic Event is considered one of the most dramatic environmental perturbations of the Mesozoic. An elevated extinction rate among marine invertebrates accompanied rapid environmental changes, but effects on large vertebrates are less understood. We examined changes in ichthyosaur body size in the Posidonia Shale of the Southwest German Basin spanning the extinction interval to assess how environmental changes and biotic crisis among prey species affected large reptiles. We report no species-level extinction among the ichthyosaurs coinciding with peak invertebrate extinction. Large ichthyosaurs were absent from the fauna during the extinction interval, but became more abundant in the immediate aftermath. Stenopterygius quadriscissus, the most abundant species during the extinction interval, increased in body size after the biotic event. Rapid invasion by large taxa occurred immediately following the extinction event at the end of the first ammonite zone of the early Toarcian. Greater mobility permitting exploitation of ephemeral resources and opportunistic feeding behavior may minimize the impacts of environmental change on large vertebrates.

opencc-zeroMay 2020View details →

Data from: Threats to aquatic taxa in an arid landscape: knowledge gaps and areas of understanding for amphibians of the American Southwest

This dataset contains supporting information for WIREs Water Advanced Review: "Threats to aquatic taxa in an arid landscape: knowledge gaps and areas of understanding for amphibians of the American Southwest", by Mims et al., published in 2020 (doi.org/10.1002/wat2.1449). Please see the original article for additional information, and contact Dr. Meryl Mims (mims@vt.edu) with questions or specific requests.

opencc-zeroDec 2011View details →

Data from: A maximum likelihood approach to generate hypotheses on the evolution and historical biogeography in the Lower Volga Valley regions (southwest Russia)

The evolution of the diverse flora in the Lower Volga Valley (LVV) (southwest Russia) is complex due to the composite geomorphology and tectonic history of the Caspian Sea and adjacent areas. In the absence of phylogenetic studies and temporal information, we implemented a maximum likelihood (ML) approach and stochastic character mapping reconstruction aiming at recovering historical signals from species occurrence data. A taxon-area matrix of 13 floristic areas and 1018 extant species was constructed and analyzed with RAxML and Mesquite. Additionally, we simulated scenarios with numbers of hypothetical extinct taxa from an unknown palaeoflora that occupied the areas before the dramatic transgression and regression events that have occurred from the Pleistocene to the present day. The flora occurring strictly along the river valley and delta appear to be younger than that of adjacent steppes and desert-like regions, regardless of the chronology of transgression and regression events that led to the geomorphological formation of the LVV. This result is also supported when hypothetical extinct taxa are included in the analyses. The history of each species was inferred by using a stochastic character mapping reconstruction method as implemented in Mesquite. Individual histories appear to be independent from one another and have been shaped by repeated dispersal and extinction events. These reconstructions provide testable hypotheses for more in-depth investigations of their population structure and dynamics.

opencc-zeroDec 2015View details →

Data from: A new monster from southwest Oregon forests: Cryptomaster behemoth sp. n. (Opiliones, Laniatores, Travunioidea)

The monotypic genus Cryptomaster Briggs, 1969 was described based on individuals from a single locality in southwestern Oregon. The described species C. leviathan Briggs, 1969 was named for its large body size compared to most travunioid Laniatores. However, as the generic name suggests, Cryptomaster are notoriously difficult to find, and few subsequent collections have been recorded for this genus. Here, we increase sampling of Cryptomaster to 15 localities, extending their known range from the Coast Range northeast to the western Cascade Mountains of southern Oregon. Phylogenetic analyses of mitochondrial and nuclear DNA sequence data reveal deep phylogenetic breaks consistent with independently evolving lineages. We use discovery and validation species delimitation approaches to generate and test species hypotheses, including a coalescent species delimitation method to test multi-species hypotheses. For delimited species, we use light microscopy and SEM to discover diagnostic morphological characters. Although Cryptomaster has a small geographic distribution, this taxon is consistent with other short-range endemics in having deep phylogenetic breaks indicative of species level divergences. Herein we describe Cryptomaster behemoth sp. n., and provide morphological diagnostic characters for identifying C. leviathan and C. behemoth.

opencc-zeroDec 2017View details →

Data from: A taxonomic, functional and phylogenetic perspective on the community assembly of passerine birds along an elevational gradient in southwest China

Integrating multiple-facets of biodiversity to describe spatial and temporal distribution patterns is one way of revealing the mechanisms driving community assembly. We assessed the species, functional and phylogenetic composition and structure of passerine bird communities along an elevational gradient both in wintering and breeding seasons in the Ailao Mountains, southwest China, in order to identify the dominant ecological processes structuring the communities and how these processes change with elevation and season. Our research confirms that the highest taxonomic diversity, and distinct community composition, was found in the moist evergreen broadleaf forest at high elevation in both seasons. Environmental filtering was the dominant force at high elevations with relatively cold and wet climatic conditions, while the observed value of mean pairwise functional and phylogenetic distances of low elevation were constantly higher than expectation in two seasons, suggested interspecific competition could played the key role at low elevations, perhaps because of relative rich resource result from complex vegetation structure and human-induced disturbance. Across all elevations, there was a trend of decreasing intensity of environmental filtering whereas increasing interspecific competition from wintering season to breeding season. This was likely due to the increased resource availability but reproduction-associated competition in the summer months. In general, there is a clear justification for conservation efforts to protect entire elevational gradients in the Ailao Mountains, given the distinct taxonomic, functional and phylogenetic compositions and also elevational migration pattern in passerine bird communities.