Find research datasets worth reusing

opencc-by-4.0May 2020View details →

Fig. 2 in Diversity and distribution of intertidal marine species in Singapore

Fig. 2. Species richness of intertidal sites in Singapore.

opencc-zeroAug 2021View details →

Analytic dataset informing modeling of winter species distributions of North American bat species

The fungal pathogen Pseudogymnoascus destructans and resultant white-nose syndrome (WNS) continues to advance across North America, infecting new bat populations, species, and hibernacula. Western North America hosts the highest bat diversity in the U.S. and Canada, yet little is known about hibernacula and hibernation behavior in this region. An improved understanding of where bats hibernate and the conditions that create suitable hibernacula is critical if land managers are to anticipate and address the conservation needs of WNS-susceptible species in regions yet to be infected. We estimated suitability of potential winter hibernaculum sites across the ranges of five bat species occurring in western North America. We estimated winter survival capacity from a mechanistic survivorship model based on bat bioenergetics and climate conditions. Leveraging the Google Earth Engine platform for spatial data processing, we used boosted regression trees to relate these estimates, along with key landscape attributes, to bat occurrence data in a hybrid correlative-mechanistic approach. Winter survival capacity, topography, land cover, and access to caves and mines were important predictors of winter hibernaculum selection, but the shape and relative importance of these relationships varied among species. This suggests that the occurrence of bat hibernacula can, in part, be predicted from readily mapped above-ground features, and is not only dictated by below-ground characteristics for which spatial data are lacking. Furthermore, our mechanistic estimate of winter survivorship was, on average, the third strongest predictor of winter occurrence probability across focal species. Winter distributions of North American bat species were driven by their physiological capacity to survive winter conditions and duration in a given location, as well as selection for topographic and other landscape features, but in species-specific ways. The influence of winter survivorship on several species' distributions, the underlying influence of climate conditions on winter survivorship, and the anticipated influence of WNS on bats' hibernation physiology and survivorship together suggest that North American bat distributions may undergo future shifts as these species are exposed to not only WNS, but climate change. We anticipate that the models presented here may offer a valuable baseline for assessing the potential species-level impacts of these stressors.

opencc-by-4.0Mar 2009View details →

Fig. 20 in Description of One New Species of Chileria and Three New Species of Orthotylus, with Nomenclatural and Distributional Notes on Neotropical Orthotylinae (Heteroptera: Miridae: Orthotylini)

Fig. 20. Saileria bella. Male genitalia: vesica, right and left parameres, and genital capsule.

opencc-by-4.0Mar 2009View details →

Fig. 9 in Description of One New Species of Chileria and Three New Species of Orthotylus, with Nomenclatural and Distributional Notes on Neotropical Orthotylinae (Heteroptera: Miridae: Orthotylini)

Fig. 9. Distribution map of Chileria andina, C. araucana, C. colla, and C. pamparum.

opencc-by-4.0Mar 2009View details →

Fig. 4 in Description of One New Species of Chileria and Three New Species of Orthotylus, with Nomenclatural and Distributional Notes on Neotropical Orthotylinae (Heteroptera: Miridae: Orthotylini)

Fig. 4. Distribution map of Biobiocoris setosus and Hyporhinocoris fratruelis.

opencc-by-nd-4.0May 2016View details →

FIGURE 5 in The new distribution of Amblyseius herbicolus in Turkey (Parasitiformes, Phytoseiidae) with a key of Amblyseius species found in Turkey

FIGURE 5: Localities in Ordu province (Black Sea Region), Turkey where Amblyseius herbicolus were collected.

FIGURE 8 in The Agauopsis brevipalpus group (Acari: Halacaridae), descriptions of tropical Indo-West Pacific species, a key to all species, their geographical distribution and reflections on dispersal routes

FIGURE 8: Present day records of species of the Agauopsis brevipalpus group with three (circle) and four spines (quadrat) on telofemur I plotted on a map with Lower Jurassic land masses (solid line), ca 180 my ago (present-day plates in dotted line). A record from the Society Islands is omitted. (Lower Jurassic map modified from Howarth 1981; Vaughan & Livermore 2005; Stevens 2012).

FIGURE 7 in The Agauopsis brevipalpus group (Acari: Halacaridae), descriptions of tropical Indo-West Pacific species, a key to all species, their geographical distribution and reflections on dispersal routes

FIGURE 7: Geographical distribution of named and unnamed species of the Agauopsis brevipalpus group. Different symbols are used depending on number of spines on telofemur I. Species with one or two spines are marked by a diamond: (1, collaris; 2, rosea; X, Agauopsis sp.); with three spines by a circle: (1, filirostris; 2, glabra; 3, ivanomorselii; 4, luxtoni; 5, newelli; 6, novaezelandiae; 7, reticulata); with four spines by a quadrat (1, arabia; 2, arborea; 3, atacamae; 4, borealis; 5, brevipalpus; 6, dissimilis; 7, ibssi; 8, legionium; 9, littoralis;10, longirostris; 11, moorea; 12, obtusa; 13, ripa; 14, sordida; 15, youngilensis; X, Agauopsis sp.); with five or more spines by a triangle (1, tricuspis; X, Agauopsis sp.).

FIGURE 2 in The Agauopsis brevipalpus group (Acari: Halacaridae), descriptions of tropical Indo-West Pacific species, a key to all species, their geographical distribution and reflections on dispersal routes

FIGURE 2: Agauopsis dissimilis n.sp.: A – median part of PD level with ds-5, female; B – idiosoma, dorsal, female; C – idiosoma, ventral, female; D – gnathosoma, ventral, female; E – lateral margin of OC, female; F – gnathosomal base, dorsal, female; G – palp, lateral, female; H – AD, OC and PD, dorsal, male; I – idiosoma, ventral, male; J – genitoanal plate, male. (ds-5, fifth dorsal seta; glp, gland pore; L-Ba, length of gnathosomal base; L-Ro, length of rostrum; pa, porose areola; pc, pore canaliculus) Scale line = 50 µm

FIGURE 5 in The Agauopsis brevipalpus group (Acari: Halacaridae), descriptions of tropical Indo-West Pacific species, a key to all species, their geographical distribution and reflections on dispersal routes

FIGURE 5: Agauopsis ripa Otto, 1999, male: A – lateral margin of OC; B – genitoanal plate; C – gnathosoma, ventral; D – P-3 and P-4; E – tip of tarsus I, ventromedial; F – tip of tarsus II, ventromedial (one of lateral parambulacral setae obscured, the other in broken line); G – tip of tarsus III, ventral. (T, tectum) Scale line = 50 µm.

FIGURE 6 in The Agauopsis brevipalpus group (Acari: Halacaridae), descriptions of tropical Indo-West Pacific species, a key to all species, their geographical distribution and reflections on dispersal routes

FIGURE 6: Agauopsis sordida Bartsch, 1992: A – idiosoma, dorsal, female; B – idiosoma, ventral, female; C – lateral margin of OC, female; D – genitoanal plate, male; E – idiosoma, dorsal, male; F – idiosoma, ventral, male; G – gnathosoma, ventral, female. (pa, porose areola; spp, spermatopositor) Scale line = 50 µm.

FIGURE 1 in The Agauopsis brevipalpus group (Acari: Halacaridae), descriptions of tropical Indo-West Pacific species, a key to all species, their geographical distribution and reflections on dispersal routes

FIGURE 1: Agauopsis arabia Bartsch and Chatterjee, 2001: A – idiosoma, dorsal, female; B – lateral margin of OC, male; C – gnathosomal base, dorsal, female; D – gnathosoma, lateral, female; E – tip of tarsus IV, ventral, female. (glp, gland pore; pa, porose areola; pc, pore canaliculus; T, tectum) Scale line = 50 µm.

FIGURE 4 in The Agauopsis brevipalpus group (Acari: Halacaridae), descriptions of tropical Indo-West Pacific species, a key to all species, their geographical distribution and reflections on dispersal routes

FIGURE 4: Agauopsis moorea Bartsch, 1992: A – idiosoma, dorsal, male; B – idiosoma, ventral, male; C – lateral margin of OC, female; D – genitoanal plate, male; E – gnathosomal base, dorsal, female; F – gnathosoma, ventral, female; G – tip of tarsus II, ventromedial, male (lateral fossary seta and claw omitted). (spp, spermatopositor) Scale line = 50 µm.

FIGURE 3 in The Agauopsis brevipalpus group (Acari: Halacaridae), descriptions of tropical Indo-West Pacific species, a key to all species, their geographical distribution and reflections on dispersal routes

FIGURE 3: Agauopsis dissimilis n.sp.: A – leg I, medial, female; B – leg III, medial, female; C – leg IV, medial, female; D – malformed leg IV, medial, female; E – basifemur to tarsus II, medial, male; F – tip of tarsus I, lateral, female (medial setae and claw omitted); G – apical tibia and tarsus II, medial, male; H – tip of tarsus II, lateral, male (medial fossary seta and claw omitted); I – tip of tarsus II, medial, male (lateral fossary seta and claw omitted). (fa, membrane with famulus; so, solenidion) Scale line = 50 µm

opencc-by-4.0Dec 2010View details →

Fig. 2 in Distribution patterns and trophic characteristics of salmonids and native species inhabiting high altitude rivers of Pampa de Achala region, Argentina

Fig. 2. Mean salmonid density related to river order.

opencc-by-4.0Oct 2009View details →

Figure 1 in Combined phylogenetic analysis of a new North American fossil species confirms widespread Eocene distribution for stem rollers (Aves, Coracii)

Figure 1. Map showing the distribution of extant and extinct Coracii.

opencc-zeroSep 2021View details →

An interpolated biogeographic framework for tropical Africa using plant species distributions and the physical environment

Aim: Existing phytogeographic frameworks for tropical Africa lack either spatial completeness, unit definitions smaller than the regional scale, or a quantitative approach. We investigate whether physical environmental variables can be used to interpolate floristically defined vegetation units, presenting an interpolated, hierarchical, quantitative phytogeographic framework for tropical Africa, which is compared to previously defined regions. Location: Tropical mainland Africa 24°N to 24°S. Taxon: 31,046 vascular plant species and infraspecific taxa. Methods: We calculate a betasim dissimilarity matrix from a comprehensive whole-flora database of plant species distributions. We investigate environmental correlates of floristic turnover with local non-metric multidimensional scaling. We derive a hierarchical biogeographic framework by clustering the dissimilarity matrix. The framework is modelled using a classification decision tree method and 12 physical environmental variables to interpolate and downscale the framework across the study region. Results: Floristic turnover is related strongly to water availability and temperature, with smaller contributions from land cover, topographic ruggedness and lithology. Region can be predicted with 90% accuracy by the model. We define 19 regions and 99 districts. We find a novel arrangement of the arid regions. Regional subdivision within the savanna biome is supported with minor variation to borders. Within the forests of west and central Africa, our whole-flora gridded regionalisation supports the divisions identified by a previous analysis of trees only. Main conclusions: Physical environmental variables can be used to predict floristically defined vegetation units with very high accuracy, and the approach could be pursued for other inc ompletely sampled taxa and areas outside of tropical Africa. Geographic coherence is higher than in previous quantitative phytoregional definitions. For most tropical African vascular plant species, we provide predictions of which species will occur within each mapped district and region of tropical Africa. The framework should be useful for future studies in ecology, evolution and conservation.

opencc-zeroSep 2021View details →

Liolophura species discrimination with geographical distribution patterns and their divergence and expansion history on the northwestern Pacific coast

Please refer to Choi et al. (2021): "Choi, E.H., Yeo, M.Y., Kim, G. et al. Liolophura species discrimination with geographical distribution patterns and their divergence and expansion history on the northwestern Pacific coast. Sci Rep 11, 17602 (2021). The chiton Liolophura japonica (Lischke, 1873) is widely distributed in intertidal coastal areas of the northwestern Pacific. Here we show species discrimination of L. japonica into two species and one subspecies based on COI and 16S rRNA; L. koreana, sp. nov. was mainly distributed at ca. 33°24'–38°32' N, L. japonica at ca. 33°24'–35°53' N, and L. j. sinensis, ssp. nov. at ca. 27°02'–28°00' N. These species were morphologically distinguishable by black spots on the tegmentum and the shape of spicules on the perinotum. In addition, we have discussed their molecular divergence times (3.37 mya for L. koreana and L. japonica, around the mid Pliocene warm period; 1.84 mya for L. japonica and L. j. sinensis), demographic expansion events following the last interglacial age, called the Eemian (129–116 kya), and augmentation of COI haplotype diversity during the late-middle to late Pleistocene. Their latitudinal geographical distribution gradients may be helpful for monitoring the migration of marine 38 invertebrates north, fostered by global warming in the northwestern Pacific.

opencc-zeroOct 2021View details →

Challenges and opportunities of species distribution modelling of terrestrial arthropod predators

Aim. Species distribution models (SDMs) have emerged as essential tools in the equipment of many ecologists, useful to explore species distributions in space and time and answering an assortment of questions related to biogeography, climate change biology and conservation biology. Historically, most SDM research concentrated on well-known organisms, especially vertebrates. In recent years, these tools are becoming increasingly important for predicting the distribution of understudied invertebrate taxa. Here, we reviewed the literature published on main terrestrial arthropod predators (ants, ground beetles and spiders) to explore some of the challenges and opportunities of species distribution modelling in mega-diverse arthropod groups. Location. Global. Methods. Systematic mapping of the literature and bibliometric analysis. Results. Most SDM studies of animals to date have focused either on broad samples of vertebrates or on arthropod species that are charismatic (e.g. butterflies) or economically important (e.g. vectors of disease, crop pests and pollinators). We show that the use of SDMs to map the geography of terrestrial arthropod predators is a nascent phenomenon, with a near-exponential growth in the number of studies over the past 10 years and still limited collaborative networks among researchers. There is a bias in studies towards charismatic species and geographical areas that hold lower levels of diversity but greater availability of data, such as Europe and North America. Conclusions. Arthropods pose particular modelling challenges that add to the ones already present for vertebrates, but they should also offer opportunities for future SDM research as data and new methods are made available. To overcome data limitations, we illustrate the potential of modern data sources and new modelling approaches. We discuss areas of research where SDMs may be combined with dispersal models and increasingly available phylogenetic and functional data to understand evolutionary changes in ranges and range-limiting traits over past and contemporary time scales.