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16 results for “Quercus spp.”
Data from: Signatures of local adaptation in candidate genes of oaks (Quercus spp.) in respect to present and future climatic conditions
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Fine-scale variation in soil properties promotes local taxonomic diversity of hybridizing oak species (Quercus spp.)
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Figures 4–6 in The Western Palaearctic species of Psilophrys Mayr (Hymenoptera, Chalcidoidea: Encyrtidae), parasitoids of kermesids (Hemiptera, Coccoidea: Kermesidae) attacking oaks (Quercus spp.)
Figures 4–6. Psilophrys bella, ♀. (4) Ovipositor. (5) Antenna. (6) Fore wing.
Figures 1–3 in The Western Palaearctic species of Psilophrys Mayr (Hymenoptera, Chalcidoidea: Encyrtidae), parasitoids of kermesids (Hemiptera, Coccoidea: Kermesidae) attacking oaks (Quercus spp.)
Figures 1–3. Psilophrys aristotelei, ♀. (1) Antenna. (2) Fore wing. (3) Ovipositor.
Data from: Chronic phosphorus enrichment and elevated pH suppresses Quercus spp. leaf litter decomposition in a temperate forest
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Quercus spp Tree Ring Isotopes, Midwest US
Both increases in temperature and changes in precipitation may limit future tree growth, but rising atmospheric CO2 could offset some of these stressors through increased plant Water Use Efficiency (WUE). The net balance between the negative impacts of climate change and positive effects of CO2 on tree growth will be most important for systems already at plant physiological limits, where increased climate stress could drive mortality and shifts in range distribution. Here, we quantify the effects of climate, stand structure, and rising CO2 on both annual tree-ring growth increment and WUE at a savanna-forest boundary in the Upper Midwest United States. Taking a Bayesian hierarchical modelling approach, we find that plant WUE increased by ~13-25% over the course of the 20th century, but on average, tree-ring growth increments do not significantly increase. Consistent with higher WUE under increased CO2 and recent wetting, we observe a decrease in sensitivity of tree growth to annual precipitation, leading to 25-65% higher growth under dry conditions compared to trees of similar age and size in the past. However, an emerging interaction between summer maximum temperatures and annual precipitation diminishes the water-savings benefit under hot and dry conditions. Both the decrease in precipitation sensitivity, and the interaction between temperature and precipitation are strongest in open canopy microclimates, suggesting that stand structure may modulate response to future changes. Overall, we find that while higher WUE may provide some water savings benefits to growth under normal drought conditions, near-term future temperature increases combined with drought events could drive growth declines of over 50%. These products are used in the manucript, Heilman et al., 2020, Increased water use efficiency leads to decreased precipitation sensitivity of tree growth, but is offset by high temperatures. Submitted for review. The isotope data from this package corresponds to t
FIGURE 2 in Taxonomic assessment of the inquiline fauna (Hymenoptera: Cynipidae Synergini, Ceroptresini) reared from cynipid galls on oaks (Quercus spp.) from South Korea
FIGURE 2. Synergus minutus Lobato-Vila & Pujade-Villar, sp. nov. Female: a) head in anterior view; b) head in dorsal view; e) antenna; g) mesosoma in lateral view; h) mesosoma in dorsal view; i) tarsal claw; j) propodeum; k) metasoma in lateral view; l) detail of the syntergite posterodorsal punctuation. Male: c) head in anterior view; d) head in dorsal view; f) antenna.
FIGURE 1 in Taxonomic assessment of the inquiline fauna (Hymenoptera: Cynipidae Synergini, Ceroptresini) reared from cynipid galls on oaks (Quercus spp.) from South Korea
FIGURE 1. Synergus minutus Lobato-Vila & Pujade-Villar, sp. nov.: a) female habitus; b) male habitus; c) female head in anterior view; d) male head in anterior view.
FIGURES 32–37 in Notes on three braconid wasps (Hymenoptera: Braconidae, Doryctinae) parasitizing oak long-horned beetle, Massicus raddei (Coleoptera: Cerambycidae), a severe pest of Quercus spp. in China, together with the description of a new species
FIGURES 32–37. Zombrus bicolor (Enderlein), ♀. 32, Fore leg; 33, fore tibia and spines on it; 34, mid leg; 35, hind leg; 36, fore wing; 37, hind wing. 32–35, lateral view; 36, 37, dorsal view.
FIGURES 5–8. 5 in Notes on three braconid wasps (Hymenoptera: Braconidae, Doryctinae) parasitizing oak long-horned beetle, Massicus raddei (Coleoptera: Cerambycidae), a severe pest of Quercus spp. in China, together with the description of a new species
FIGURES 5–8. 5, young larva of M. raddei under the bark; 6, some of mature larvae of M. raddei from one tree; 7, emergencing of Doryctes petiolatus Shestakov; 8, cocoon of Rhoptrocentrus quercusi sp.n..
FIGURES 22–26 in Notes on three braconid wasps (Hymenoptera: Braconidae, Doryctinae) parasitizing oak long-horned beetle, Massicus raddei (Coleoptera: Cerambycidae), a severe pest of Quercus spp. in China, together with the description of a new species
FIGURES 22–26. Rhoptrocentrus quercusi sp.n., ♀. 22, Head; 23, mesosoma; 24, fore leg; 25, mid leg; 26, hind leg. 22–26, lateral view.
FIGURES 1–4. 1 in Notes on three braconid wasps (Hymenoptera: Braconidae, Doryctinae) parasitizing oak long-horned beetle, Massicus raddei (Coleoptera: Cerambycidae), a severe pest of Quercus spp. in China, together with the description of a new species
FIGURES 1–4. 1, Roburs (Quercus liaotungensis) damaged by Massicus raddei Blessig; 2, a single robur (Q. liaotungensis) damaged by M. raddei; 3, trunk of Q. liaotungensis with lots of exit holes produced by M. raddei; 4, cross section of tunnels bored by M. raddei.
FIGURES 27–31 in Notes on three braconid wasps (Hymenoptera: Braconidae, Doryctinae) parasitizing oak long-horned beetle, Massicus raddei (Coleoptera: Cerambycidae), a severe pest of Quercus spp. in China, together with the description of a new species
FIGURES 27–31. Zombrus bicolor (Enderlein), ♀. 27, Habitus; 28, head; 29, head and mesosoma; 30, mesosoma; 31, metasoma. 27, 29, 31, dorsal view; 28, frontal view; 30, lateral view.
FIGURES 9–14. Doryctes petiolatus Shestakov. 9, 13, 14 in Notes on three braconid wasps (Hymenoptera: Braconidae, Doryctinae) parasitizing oak long-horned beetle, Massicus raddei (Coleoptera: Cerambycidae), a severe pest of Quercus spp. in China, together with the description of a new species
FIGURES 9–14. Doryctes petiolatus Shestakov. 9, 13, 14, ♂; 10–12, ♀. 9, Habitus; 10, 11, head; 12, head and mesosoma; 13, mesosoma; 14, metasoma. 9, 10, 13, 14, dorsal view; 11, frontal view; 12, lateral view.
FIGURES 15–21 in Notes on three braconid wasps (Hymenoptera: Braconidae, Doryctinae) parasitizing oak long-horned beetle, Massicus raddei (Coleoptera: Cerambycidae), a severe pest of Quercus spp. in China, together with the description of a new species
FIGURES 15–21. Rhoptrocentrus quercusi sp.n., ♀. 15, 16, Habitus; 17, right antennae; 18, 19, head; 20, mesosoma; 21, metasoma. 15, 17, 19–21, dorsal view; 16, lateral view; 18, frontal view.
Data from: Outer bark thickness decreases more with height on stems of fire-resistant than fire-sensitive Floridian oaks (Quercus spp.; Fagaceae)
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International Brain Laboratory public data
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