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23 results for “endangered plant species”
Figure 3 in Uvariopsis dicaprio (Annonaceae) a new tree species with notes on its pollination biology, and the Critically Endangered narrowly endemic plant species of the Ebo Forest, Cameroon
Figure 3 Uvariopsis dicaprio. (A) habit, cauliflorous inflorescences on trunk; (B) leafy branch, one season's growth; (C) inflorescence, showing pedicel articulations, bracts and bracteoles; (D) flower, with one petal removed to show the staminal dome; (E) detail of sparse hairs on abaxial petal surface; (F) stamen, different views; (G) junction of base of leaf with stem, showing dome-like axillary bud. All drawn from MacKinnon 51 (K) by MEG GRIFFITHS. Full-size DOI: 10.7717/peerj.12614/fig-3
Figure 4 in Uvariopsis dicaprio (Annonaceae) a new tree species with notes on its pollination biology, and the Critically Endangered narrowly endemic plant species of the Ebo Forest, Cameroon
Figure 4 Global distribution of Uvariopsis dicaprio, together with U. korupensis and U. submontana. Full-size DOI: 10.7717/peerj.12614/fig-4
Figure 1 in Uvariopsis dicaprio (Annonaceae) a new tree species with notes on its pollination biology, and the Critically Endangered narrowly endemic plant species of the Ebo Forest, Cameroon
Figure 1 Uvariopsis dicaprio. Cauliflorous inflorescences on trunk. Photo Lorna MacKinnon. Full-size DOI: 10.7717/peerj.12614/fig-1
Figure 2 in Uvariopsis dicaprio (Annonaceae) a new tree species with notes on its pollination biology, and the Critically Endangered narrowly endemic plant species of the Ebo Forest, Cameroon
Figure 2 Uvariopsis dicaprio. Trunk apex with cauliflorous flowers and canopy. Photo Lorna MacKinnon. Full-size DOI: 10.7717/peerj.12614/fig-2
FIG. 3 in New discoveries of plants from Republic of Guinea, W. Africa, including Gymnosiphon fonensis Cheek, sp. nov. (Burmanniaceae), a new Critically Endangered species from Simandou
FIG. 3. — Gymnosiphon fonensis Cheek, sp. nov.: map of the global distribution. Adapted from Xander van der Burgt, map data Open Street Map.
FIG. 2 in New discoveries of plants from Republic of Guinea, W. Africa, including Gymnosiphon fonensis Cheek, sp. nov. (Burmanniaceae), a new Critically Endangered species from Simandou
FIG. 2. —Gymnosiphon fonensis Cheek, sp. nov.: A, habit, whole plant; B, habit, base of plant showing: rhizome (dotted) with roots and two stem (peduncle) bases; C, flower and rhachis; D, distal part of open flower; E, corolla tube opened (distal portion) to show inner tepals in relation to style head (with stamens attached) and stigmas; F, lobing of corolla lobes (from one flower); G, stigmatic-style head, with stigmas above, anther cells below, side view; H, as G but dorsal view; I, as G but ventral view (style in transverse section); J, ovary opened with a longitudinal cut, to show the three placental masses with ovules, and (black) pairs of nectar glands; A-I, from Cheek 19334; J, from van der Burgt 1274. All drawn by Andrew Brown. Scale bars: A, 1 cm; B, C, 5 mm; D-F, 5 mm; G-I, 1 mm; J, 2 mm.
Data from: Soil microbiomes underlie population persistence of an endangered plant species
Microbiomes can dramatically alter individual plant performance, yet how these effects influence higher order processes is not well resolved. In particular, little is known about how microbiome effects on individual plants alter plant population dynamics, a question critical to imperiled species conservation. Here, we integrate bioassays, multidecadal demographic data, and integral projection modeling to determine how the presence of the natural soil microbiome underlies plant population dynamics. Simulations indicated that the presence of soil microbiomes boosted population growth rates (λ) of the endangered Hypericum cumulicola by 13% on average, the difference between population growth versus decline in 76% of patches. The greatest benefit (47% increase in λ) occurred in low nutrient, high elevation habitats, suggesting that the soil microbiome may help expand H. cumulicola's distribution to include these stressful habitats. Our results demonstrate that soil microbiomes can significantly affect plant population growth and persistence, and support the incorporation of soil microbiomes into conservation planning. plant population growth and persistence, and support the incorporation of soil microbiomes into conservation planning.
Data: Detecting preservation and reintroduction sites for endangered plant species using a two-step modelling and field approach
<p><span>To withstand the surge of species loss worldwide, (re)introduction of endangered plant species has become an increasingly common technique in conservation biology. Successful (re)introduction plans, however, require identifying sites that provide the optimal ecological conditions for the target species to thrive. In this study, we propose a two-step approach to identify appropriate (re)introduction sites. The first step involves modelling the niche and distribution of the species with bioclimatic and topographical predictors, both at continental and at national scales. The second step consists of refining these bioclimatic predictions by analysing stationary ecological parameters, such as soil conditions, and relating them to population-level fitness values. We demonstrate this methodology using Swiss populations of the lady's slipper orchid (<em>Cypripedium calceolus</em> L., Orchidaceae), for which conservation plans have existed for years but have generally been unfruitful. Our workflow identified sites for future (re)introductions based on the species requirements for mid-to-sunny light conditions and specific soil physico-chemical properties, such as basic to neutral pH and low soil organic matter content. Our findings show that by combining wide-scale bioclimatic modelling with fine scale field measurements it is possible to carefully identify the ecological requirements of a target species for successful (re)introductions.</span></p>
Data from: Soil microbiomes underlie population persistence of an endangered plant species
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Data: Detecting preservation and reintroduction sites for endangered plant species using a two-step modelling and field approach
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FIGURE 6 in The endemic Hawaiian mealybug genus Phyllococcus Ehrhorn, 1916 (Hemiptera: Coccomorpha: Pseudococcidae): redescription of the type species and description of a new species on an endangered host plant, Cryptocarya mannii (Lauraceae)
FIGURE 6. Third-instar female nymph of Phyllococcus cryptocaryae Percy, Watson & Hodgson, sp. n. A. Trilocular pore; B. Dorsal view of anal plates showing cerarian setae; Ci. Oral collar tubular duct on third-instar nymph; Cii. Oral collar duct on pharate adult female within second-instar nymph; D. Spinose seta along inner margin of anal plate; E. Seta on elongate setal socket on ventral surface of anal plate; G. Ventral view of posterior end of abdomen, showing position of anus; H. Ventral seta with convex setal socket; K. Simple pore; M. Spinose cerarian seta; N. Very small dorsal setae on shield.
FIGURE 4. A in The endemic Hawaiian mealybug genus Phyllococcus Ehrhorn, 1916 (Hemiptera: Coccomorpha: Pseudococcidae): redescription of the type species and description of a new species on an endangered host plant, Cryptocarya mannii (Lauraceae)
FIGURE 4. A. Galls of triozid psyllid, Paurotriozana adaptata Caldwell, distributed along midrib and veins on underside of leaves of Cryptocarya mannii (arrow indicates vacated gall cavity); B. Pa. adaptata, last-instar immature psyllid with dorsal surface close to surface of the gall; C. Illustration showing the shape of the psyllid gall in cross section (dotted line indicates position of the dorsal surface of the immature psyllid); D. Adult female Ph. cryptocaryae after removal from gall chamber (arrow indicates oval anal shield); E. Illustration showing the shape of the mealybug gall in cross section (dotted line indicates position of the dorsal surface of the anal shield); F. Cryptocarya mannii leaf showing protrusions on the upper leaf surface caused by the galls of Ph. cryptocaryae. Photographs by Karl Magnacca.
FIGURE 1. A in The endemic Hawaiian mealybug genus Phyllococcus Ehrhorn, 1916 (Hemiptera: Coccomorpha: Pseudococcidae): redescription of the type species and description of a new species on an endangered host plant, Cryptocarya mannii (Lauraceae)
FIGURE 1. A. Galls of Phyllococcus oahuensis (Ehrhorn) on a leaf of Touchardia sandwicensis, found on Maui in 2007; B. Closer view of galls of Ph. oahuensis. Photographs by Karl Magnacca.
FIGURE 5 in The endemic Hawaiian mealybug genus Phyllococcus Ehrhorn, 1916 (Hemiptera: Coccomorpha: Pseudococcidae): redescription of the type species and description of a new species on an endangered host plant, Cryptocarya mannii (Lauraceae)
FIGURE 5. Adult female of Phyllococcus cryptocaryae Percy, Watson & Hodgson, sp. n. A. Trilocular pore; B. Dorsal view of anal plates; C. Oral collar tubular duct; D. Spinose seta along posterior margin of anal plate; E. Stiff seta on elongate, boss-like setal socket on ventral surface of anal plate; F. Shape of anal ring; G. Ventral view of posterior end of abdomen, showing anal lobes, position of anus and large vulva (v); H. Seta on posterior of abdomen with convex setal socket; J. End of tarsus plus claw; K. Simple pore; L. Dorsal seta.
FIGURE 3 in The endemic Hawaiian mealybug genus Phyllococcus Ehrhorn, 1916 (Hemiptera: Coccomorpha: Pseudococcidae): redescription of the type species and description of a new species on an endangered host plant, Cryptocarya mannii (Lauraceae)
FIGURE 3. Adult male Phyllococcus oahuensis (Ehrhorn). A. Dorsal ocular sclerite, showing dorsal simple eye (d) and ocellus (o); D. Fleshy seta on leg; E. Hair-like seta on leg; F. Dorsal view of posterior half of penial sheath; G. Ventral view of penial sheath; H. Metatibia + tarsus; J. Loculate pores.
FIGURE 2 in The endemic Hawaiian mealybug genus Phyllococcus Ehrhorn, 1916 (Hemiptera: Coccomorpha: Pseudococcidae): redescription of the type species and description of a new species on an endangered host plant, Cryptocarya mannii (Lauraceae)
FIGURE 2. Adult female of Phyllococcus oahuensis (Ehrhorn). A. Trilocular pore; B. Dorsal and ventral views of anal plates; E. Spinules on anal plates and margins of dorsal shield; F. Margin of dorsal shield; L. Dorsal seta; K. Simple pores; M. Anterior view of hind leg; S. Spiracle; Z. Illustration of gall by Ferris (in Zimmerman 1948: 160, fig. 93).
FIGURE 1. Dioscorea flabellispina. A. Staminate plant. B–C. Staminate flower. D. Staminate inflorescence. E. Underground system. F. Fan-like thorns. G. Pistillate plant with fruits. H. Fruit. I in Dioscorea flabellispina (Dioscoreaceae), a new endangered species from the Brazilian Atlantic Rainforest
FIGURE 1. Dioscorea flabellispina. A. Staminate plant. B–C. Staminate flower. D. Staminate inflorescence. E. Underground system. F. Fan-like thorns. G. Pistillate plant with fruits. H. Fruit. I. Seed. Illustration by R. Dana.
Raw data from: Relative impact of native and non-native plants on endangered species in a major European city
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Genetic diversity of Horsfieldia tetratepala (Myristicaceae), an endangered plant species with extremely small populations to China: implications for its conservation
<p>Genetic variation determines the evolutionary potential of a species and is vital for fully understanding the evolution of a species, as well as for developing optimal conservation strategies. <i>Horsfieldia tetratepala</i> is an economically important rainforest tree which has declined steadily, mainly though habitat destruction, and an endangered, narrow endemic in China where it is also classified as a Plant Species with Extremely Small Populations (PSESP). Effective conservation strategies for <i>H. tetratepala</i> are required urgently, but limited information about its<i> </i>genome is available. Accordingly, restriction site-associated DNA sequencing (RAD_seq) was used to sequence sixty-three <i>H. tetratepala</i> trees covering ten isolated populations to assess genome-level diversity and population structure, generating 8,103 high-quality SNPs. Low genetic diversity and moderate genetic differentiation was observed among populations, but Bayesian clustering divided the sampled <i>H. tetratepala</i> populations into two genetic clusters, though with some populations from Guangxi and Yunnan intermixed. Because of increasing of habitat fragmentation and human disturbance, conservation priority should be placed on populations with higher genetic variation (e.g., BB, TKH, DWS, and GLQ). Overall, our study provides valuable genomic resources for <i>H. tetratepala</i> that will significantly advance the formulation of effective conservation strategies.</p>
Data for: Quantifying patch-specific seed dispersal and local population dynamics to estimate population spread of an endangered plant species
<p>Dataset on seed dispersal and population spread for the paper</p> <p class="Default"><span><b>Quantifying patch-specific seed dispersal and local population dynamics to estimate population spread of an endangered plant species</b></span></p> <p>Jinlei Zhu<sup>1, 2,</sup> *, Karolína Hrušková<sup>1, 3</sup>, Hana Pánková<sup>1</sup>, Zuzana Münzbergová<sup>1, 3</sup></p> <p><sup>1</sup>Institute of Botany, Czech Academy of Sciences, Průhonice, Czech Republic</p> <p class="Default"><span><sup>2</sup>Institute of Landscape and Plant Ecology, University of Hohenheim, Stuttgart, Germany</span></p> <p class="Default"><span><sup>3</sup>Department of Botany, Faculty of Science, Charles University, Prague, Czech Republic</span></p> <p class="Default"><span>*Corresponding author: jinlei.zhu@uni-hohenheim.de</span></p> <p>Institute of Landscape and Plant Ecology</p> <p>University of Hohenheim</p> <p>Ottilie-Zeller-Weg 2, 70599 Stuttgart, Germany</p>
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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.