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582 results for “Ambrosia”
Kellogg Biological Station site, station Treatment 2, standard levels of chemical inputs, no tillage, study of aboveground net primary productivity of Ambrosia artemisiifolia in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains aboveground net primary productivity of Ambrosia artemisiifolia measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Treatment 3, organic-based low chemical input (banded herbicide, starter N), winter leguminous crop, annual tillage and post-planting cultivation, study of aboveground net primary productivity of Ambrosia artemisiifolia in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains aboveground net primary productivity of Ambrosia artemisiifolia measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Treatment 4, certified oganic, no chemical inputs, annual tillage, rotary-hoed to control weeds, study of aboveground net primary productivity of Ambrosia artemisiifolia in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains aboveground net primary productivity of Ambrosia artemisiifolia measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Treatment 7, native successional treatment, abandoned after spring plowing in 1989, study of aboveground net primary productivity of Ambrosia artemisiifolia in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains aboveground net primary productivity of Ambrosia artemisiifolia measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Kellogg Biological Station, study of aboveground net primary productivity of Ambrosia artemisiifolia in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains aboveground net primary productivity of Ambrosia artemisiifolia measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
FIGURE 2 in Two new genera of Oriental xyleborine ambrosia beetles (Coleoptera, Curculionidae: Scolytinae)
FIGURE 2. Details of taxa highlighted in Fig.1. New genera are highlighted and numbers at nodes indicate specific posterior probabilities.
FIGURE 1 in Two new genera of Oriental xyleborine ambrosia beetles (Coleoptera, Curculionidae: Scolytinae)
FIGURE 1. Majority-rule consensus tree of 600,002 trees found in the Bayesian analysis of DNA sequences from four genes for 181 xyleborine species. Red asterisks indicate nodes with 0.9–1.0 posterior probability. Taxa highlighted in yellow are detailed in Fig. 2.
FIGURES 19–38 in Two new genera of Oriental xyleborine ambrosia beetles (Coleoptera, Curculionidae: Scolytinae)
FIGURES 19–38. Lateral, dorsal, posterior oblique and anterior view of Tricosa cattienensis (19–22), T. indochinensis (23–26), T. jacula (27–30), T. mangoense (31–34), T. metacuneola (35–38).
FIGURES 3–18 in Two new genera of Oriental xyleborine ambrosia beetles (Coleoptera, Curculionidae: Scolytinae)
FIGURES 3–18. Lateral, dorsal, posterior oblique and anterior view of Fraudatrix cuneiformis (3–6), F. melas (7–10), F. pileatula (11–14), F. simplex (15–18).
FIGURE 1 in The first record of two non-native ambrosia beetles in Slovenia: Ambrosiodmus rubricollis (Eichhoff, 1875) and Ambrosiophilus atratus (Eichhoff, 1875) (Coleoptera: Curculionidae, Scolytinae)
FIGURE 1: Weekly catch of A. rubricollis and A. atratus specimens during the monitoring period in 2018.
FIGURE 2 in Eggersanthus Sittichaya & Smith gen. nov., a new Oriental ambrosia beetle genus (Coleoptera: Curculionidae: Scolytinae: Xyleborini)
FIGURE 2. Morphological appearance of Eggersanthus sublaevis (Eggers, 1927) (A,B,C,G,H,I), Arixyleborus rugosipes Hopkins, 1915 (type species of Arixyleborus) (D,E,F,J,K,L).
FIGURE 2 in The granulate ambrosia beetle, Xylosandrus crassiusculus (Coleoptera Curculionidae, Scolytinae), and its fungal symbiont found in South Africa
FIGURE 2. Phylogenetic and morphological identification of Ambrosiella roeperi. A Phylogram produced from maximum likelihood analysis using RAxML for the ITS region of isolates of A. roeperi. Isolates obtained and sequenced in this study are highlighted in bold. Nodes with bootstrap support higher than 75 are indicated. B Culture morphology of a two-week-old isolate grown on MEA (top left) and microscopic characters of A. roeperi. Scale bars: 50µm.
FIGURE 1 in The granulate ambrosia beetle, Xylosandrus crassiusculus (Coleoptera Curculionidae, Scolytinae), and its fungal symbiont found in South Africa
FIGURE 1. Phylogenetic and morphological identification of Xylosandrus crassiusculus. A Phylogram produced from maximum likelihood analysis using RAxML for the COI region of specimens of X. crassiusculus. Specimens sequenced in this study are highlighted in bold. Nodes with bootstrap support higher than 75 are indicated. B Lateral and dorsal view of a X. crassiusculus female. Scale bars: 2 mm.
Data from: Rapid evolution of invasive traits facilitates the invasion of common ragweed, Ambrosia artemisiifolia
1. Invasive alien plants, together with organisms introduced for biological control, are ideal study systems with which to address questions of whether, and how fast, organisms adapt to changing environments. We compared populations of common ragweed, Ambrosia artemisiifolia, from native (USA) and introduced (China) ranges at similar latitudes, together with herbivores introduced for biological control, to understand the rate of evolutionary adaptive response of an invasive plant to novel environments. 2. Evolution of phenotypic traits associated with invasiveness was assessed by comparing differentiation in quantitative traits (QST) to that of neutral microsatellite genetic loci (FST) and through climate data. A common-garden experiment estimated quantitative genetic variation associated with competition with grasses and biological control history by beetles. 3. Three growth traits (height, total, and stem biomass) and plasticity associated with additional nutrients were significantly greater in invasive compared to native populations and differed from expectations from genetic drift alone. Native, but not invasive, populations exhibited traits showing evidence of past selection and correlations with climate, consistent with the recent timing of introductions. Competition experiments between invasive populations and a US bunch grass showed reduced competitive ability in populations with a history of biological control, that might indicate a trade-off between competitive ability and herbivore resistance in invasive populations. 4. Our results demonstrate the rapid rate at which traits favouring invasion can evolve in invasive weeds, such as A. artemisiifolia, but also that adaptation may reflect joint effects of release from specialist herbivores and novel climatic conditions.
Pathogen defence is a potential driver of social evolution in ambrosia beetles
Social immunity – the collective behavioural defences against pathogens - is considered a crucial evolutionary force for the maintenance of insect societies. It has been described and investigated primarily in eusocial insects, but its role in the evolutionary trajectory from parental care to eusociality is little understood. Here, we report on the existence, plasticity, effectiveness and consequences of social pathogen defence in experimental nests of cooperatively breeding ambrosia beetles. After an Aspergillus-spore-buffer solution or a control buffer solution had been injected in laboratory nests, totipotent adult female workers increased their activity and hygienic behaviours like allogrooming and cannibalism. Such social immune responses had not been described for any non-eusocial, cooperatively breeding insect before. Removal of beetles from <i>Aspergillus</i>-treated nests in a paired experimental design revealed that the hygienic behaviours of beetles significantly reduced pathogen prevalence in the nest. Furthermore, in response to pathogen injections, female helpers delayed dispersal and thus prolonged their cooperative phase within their mother's nest. Our findings of appropriate social responses to an experimental immune challenge in a cooperatively breeding beetle corroborate the view that social immunity is not an exclusive attribute of eusocial insects, but rather a concomitant and presumably important feature in the evolutionary transitions towards complex social organization.
FIGURE 1 in Axinyssa ambrosia and Axinyssa yumae (Porifera, Halichondrida): two valid sponge species from the Caribbean Sea
FIGURE 1. Axinyssa ambrosia. Photomicrographs of spicules (A) and of cross-section of the skeleton at the surface (C). Underwater close-up of the surface (B)
FIGURE 2 in Axinyssa ambrosia and Axinyssa yumae (Porifera, Halichondrida): two valid sponge species from the Caribbean Sea
FIGURE 2. Axynissa yumae. Photomicrographs of spicules (A) and of cross-section of the skeleton at the surface (B).
FIGURE 3 in Axinyssa ambrosia and Axinyssa yumae (Porifera, Halichondrida): two valid sponge species from the Caribbean Sea
FIGURE 3. Underwater photographs of Axinyssa ambrosia (A, B, C) and Axinyssa yumae (D, E, F) at Santa Marta, Colombia. Each square in the white grid in (B) is 1 cm on a side.
FIGURE 6 in Taxonomy and biology of a new ambrosia gall midge Daphnephila urnicola sp. nov. (Diptera: Cecidomyiidae) inducing urn-shaped leaf galls on two species of Machilus (Lauraceae) in Taiwan
FIGURE 6. Diapausing first instar larva of Daphnephila urnicola sp.nov. in the leaf tissue of undeveloped galls on Machilus zuihoensis. A. the appearance of the adaxial surface of the leaf with first instar larva inside. B. cross section of leaf tissues showing initial gall with larval chamber and fungi. L= Larva, LC= larval chamber, and arrow= hyphae.
FIGURE 10 in Taxonomy and biology of a new ambrosia gall midge Daphnephila urnicola sp. nov. (Diptera: Cecidomyiidae) inducing urn-shaped leaf galls on two species of Machilus (Lauraceae) in Taiwan
FIGURE 10. Pictures showing opening area of mature galls of Daphnephila urnicola sp.nov. A–B. Apex of gall (longitudinal section) on Machilus zuihoensis (A, Bar = 80Μm) and on M. mushaensis (B, Bar = 180Μm), LC= larval chamber, NC= nutritive cell, S= secretory cell.. C–D. Longitudinal section of entire gall on Machilus zuihoensis (C) and on M. mushaensis (D); E–F. emergence hole and pupa skin on M. zuihoensis gall (E) and on M. mushaensis gall (F).
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International Brain Laboratory public data
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OpenNeuro
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