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36 results for “Dryas”
Warming experiment Dryas octopetala shoot and seed data for East Knoll, 1993 - 1994.
The International Tundra Experiment (ITEX) is a consortium of research sites seeking to understand the response of tundra plant populations to changes in growing season temperatures through a simple temperature manipulation and transplant experiment. The research goal is to examine the phenologic and reproductive responses of a set of species to experimentally-induced warming at a network of sites. The ITEX design is hierarchical, with sites participating at whatever level they are able. At the minimum, participation in ITEX requires climate monitoring (using the LTER MSR standards), a temperature manipulation using one of three possible designs, and monitoring phenologic and reproductive variables for at least one designated ITEX species or two other species. The temperature manipulation is achieved through use of conical or hexagonal open-top chambers of solar fiberglass, which have been shown to increase the air temperature at the surface approximately 3 degrees C. Dry tundra east of the Saddle on Niwot Ridge is being subjected to increased summer temperatures using ITEX chambers and a portion of the experimental plots are receiving supplemental summer rainfall at 50% above the long-term June + July + August precipitation total. Chambers increase summer air temperatures on average by 2.5 degrees Celsius, while soil temperatures are increased by 1.8 degrees Celsius. Organismic responses including the vegetative and reproductive responses of Dryas are being assessed and ecosystem carbon flux, soil solutions, and soil nitrogen content are being measured. This site is part of a Dryas transect of ITEX study locations including Toolik Lake, AK; Svalbard, Norway; Latnaja, Sweden; and Ellesmere Island, Canada.
Warming experiment Dryas octopetala ramet and leaf data for East Knoll, 1993 - 1994.
The International Tundra Experiment (ITEX) is a consortium of research sites seeking to understand the response of tundra plant populations to changes in growing season temperatures through a simple temperature manipulation and transplant experiment. The research goal is to examine the phenologic and reproductive responses of a set of species to experimentally-induced warming at a network of sites. The ITEX design is hierarchical, with sites participating at whatever level they are able. At the minimum, participation in ITEX requires climate monitoring (using the LTER MSR standards), a temperature manipulation using one of three possible designs, and monitoring phenologic and reproductive variables for at least one designated ITEX species or two other species. The temperature manipulation is achieved through use of conical or hexagonal open-top chambers of solar fiberglass, which have been shown to increase the air temperature at the surface approximately 3 degrees C. Dry tundra east of the Saddle on Niwot Ridge is being subjected to increased summer temperatures using ITEX chambers and a portion of the experimental plots are receiving supplemental summer rainfall at 50% above the long-term June + July + August precipitation total. Chambers increase summer air temperatures on average by 2.5 degrees Celsius, while soil temperatures are increased by 1.8 degrees Celsius. Organismic responses including the vegetative and reproductive responses of Dryas are being assessed and ecosystem carbon flux, soil solutions, and soil nitrogen content are being measured. This site is part of a Dryas transect of ITEX study locations including Toolik Lake, AK; Svalbard, Norway; Latnaja, Sweden; and Ellesmere Island, Canada.
Dryas octopetala L. (BR0000011090847)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Subgenus Lestes (15-28). L. sponsa: 15. Left side of head of ♂ showing ridge behind antennal cavity; 16. pterostigma of right forewing; 17-18. anal appendages dorsally and from left; 19. prophallus; 20. terminal segments and ovipositor sheath and vulvar scale at its base (all Germany except prophallus from Japan). L. barbarus (Morocco): 21. right anal appendages from above; 22. prophallus. L. dryas (California): 23. anal appendages dorsally, 24. prophallus. L. macrostigma (Turkey): 25, 26. the same. L. virens (Germany): 27, 28. the same. f = flange, hd = hood, li = ligula, sc = scoop, sh = shelf. in A revision of African Lestidae (Odonata) (excerpt)
Subgenus Lestes (15-28). L. sponsa: 15. Left side of head of ♂ showing ridge behind antennal cavity; 16. pterostigma of right forewing; 17-18. anal appendages dorsally and from left; 19. prophallus; 20. terminal segments and ovipositor sheath and vulvar scale at its base (all Germany except prophallus from Japan). L. barbarus (Morocco): 21. right anal appendages from above; 22. prophallus. L. dryas (California): 23. anal appendages dorsally, 24. prophallus. L. macrostigma (Turkey): 25, 26. the same. L. virens (Germany): 27, 28. the same. f = flange, hd = hood, li = ligula, sc = scoop, sh = shelf.
Fig. 1 in Sericus brunneus (Linnaeus, 1758) (Coleoptera: Elateridae) rinvenuto su Dryas octopetala Linnaeus, 1753 al Passo del Forno (Grigioni, Svizzera)
Fig. 1 Località Buffalora nei pressi del Passo del Forno, imbocco della Val Nuglia (foto G. Pedroni)
Fig. 3 in Sericus brunneus (Linnaeus, 1758) (Coleoptera: Elateridae) rinvenuto su Dryas octopetala Linnaeus, 1753 al Passo del Forno (Grigioni, Svizzera)
Fig. 3 Dryas octopetala tapezzante suolo calcareo in località Buffalora (foto G. Pedroni)
Fig. 2 in Sericus brunneus (Linnaeus, 1758) (Coleoptera: Elateridae) rinvenuto su Dryas octopetala Linnaeus, 1753 al Passo del Forno (Grigioni, Svizzera)
Fig. 2 Sericus brunneus (foto V. Dušánek
Fig. 4 in Sericus brunneus (Linnaeus, 1758) (Coleoptera: Elateridae) rinvenuto su Dryas octopetala Linnaeus, 1753 al Passo del Forno (Grigioni, Svizzera)
Fig. 4 Dryas octopetala località Buffalora (foto G. Pedroni)
Figure 2 in Nesting biology of the Spotted Nightingale-Thrush (Catharus dryas) and comparison of life histories in the genus Catharus
Figure 2. Reproductive phenology of C. dryas. The black bars show the total number of nests encountered monthly with eggs. The white bars show the ones encountered with nestlings. The red line represents the precipitation values recorded in the Manu National Park between 2000 and 2012, obtained from http://www.worldweatheronline.com/. Note the synchrony between the start of the rains and egg laying, and the end of reproduction with the peak of rains.
Figure 1 in Nesting biology of the Spotted Nightingale-Thrush (Catharus dryas) and comparison of life histories in the genus Catharus
Figure 1. Photographic evidence of Catharus dryas nesting characteristics. (a) The two nest layers: external layer composed principally of moss, and the internal layer built with thick and dark root networks. This photo is a courtesy of Sharon Beals, from the collection of the Western Foundation of Vertebrate Zoology. (b) Greenish-blue eggs with brown speckles. (c) Evidence of the high moss density on the vegetation at the nest's locations. (d) Three-day old nestling. (e) Ten-day old nestling. (f) 13-day old nestling.
Figure 6 in Nesting biology of the Spotted Nightingale-Thrush (Catharus dryas) and comparison of life histories in the genus Catharus
Figure 6. Absolute character values for all Catharus species. Values correspond to the minimum range. White bars represent Temperate species, meanwhile grey bars represent Tropical species. C. dryas is highlighted by a dark grey colour. Asterisk (*) indicates not available information for those species.
Figure 5 in Nesting biology of the Spotted Nightingale-Thrush (Catharus dryas) and comparison of life histories in the genus Catharus
Figure 5. Nestling growth rate throughout the nestling period in C. dryas. (a) Mass, (b) wing and (c) tarsus growth. The nestling age corresponds to the days elapsed after hatching. The intervals correspond to standard deviation and the numbers in the first panel to the sample size (number of nestling) for each specific age.
Figure 3 in Nesting biology of the Spotted Nightingale-Thrush (Catharus dryas) and comparison of life histories in the genus Catharus
Figure 3. Mean nest attendance per day across the incubation period of C. dryas based on data from 12 nests. The error bars correspond to standard deviation and the numbers above the bars to the number of nests monitored. Statistical analysis indicates no-change nest attendance through the incubation period.
Figure 4 in Nesting biology of the Spotted Nightingale-Thrush (Catharus dryas) and comparison of life histories in the genus Catharus
Figure 4. Daytime incubation behaviour in C. dryas. (a) Egg (black points) and environmental (grey points) temperatures, and the variation by hour measured as standard deviation. (b) Time on the nest, measured as the number of minutes in the nest. (c) Number of off-bout trips. (d) Length of off-bout trips. These figures are based on data from seven nest monitored during 52 days. This plot shows a relative constant pattern of egg temperature, nest attendance and the length of trips across the day.
FIGURE 35. Apanteles dryas Nixon, 1965, a in The ater-group of the genus Apanteles Foerster (Hymenoptera, Braconidae, Microgastrinae) from China with the descriptions of forty-eight new species
FIGURE 35. Apanteles dryas Nixon, 1965, a. propodeum and metasoma, dorsal view; b. head, frontal view; c. hind wing; d. fore wing; e. mesonotum and scutellum, dorsal view; f. mesopleuron; g. head, dorsal view; h. habitus, lateral view. Scale line = 0.5 mm.
Dryas octopetala SPAdes preassembly
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Dryas octopetala SPAdes preassembly
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Dryas alaskensis spades decontaminated FSCR
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Dryas integrifolia decontaminated FSCR
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Dryas integrifolia decontaminated FSCR
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