1,153 research outputs found
Marcia Langton and Peter Robb in conversation
No full textFollowing a Monthly profile on Indigenous academic Marcia Langton by author Peter Robb (\u27Midnight in Sicily\u27, \u27M\u27, \u27Street Fight in Naples\u27), Langton and Robb come together on stage at the Sydney Writers’ Festival for an intimate conversation about the common themes of their lives: difficult early years in Australia, exciting times abroad and life back in Australia subsequently. Presented by the Sydney Writers’ Festival, May 2011
Clinical aspects of dental materials : theory, practice, and cases / Marcia Gladwin, Michael Bagby.
No full textRev. ed. of: Clinical aspects of dental materials / [edited by] Marcia Gladwin, Michael Bagby. 2nd ed. c2004.Includes bibliographical references and index.xiv, 481 pages.
Figures 6-11 in New species of Pseudoptilolepis Snyder, 1949 (Diptera: Muscidae) from Brazil
No full textFigures 6-11. Pseudoptilolepis puri sp. nov. (6) Sternite 5; (7) Cercal plate; (8) Aedeagus, lateral right view; (9) Ovipositor, ventral view; (10) Ovipositor, dorsal view; (11) Spermatheca.Published as part of Barbosa, Leandro Silva, Vieira, Angelina Pimentel & Couri, Marcia Souto, 2018, New species of Pseudoptilolepis Snyder, 1949 (Diptera: Muscidae) from Brazil, pp. 1-4 in Papéis Avulsos de Zoologia 58 on page 3, DOI: 10.11606/1807-0205/2018.58.47, http://zenodo.org/record/523554
Figures 6-11 in New species of Pseudoptilolepis Snyder, 1949 (Diptera: Muscidae) from Brazil
No full textFigures 6-11. Pseudoptilolepis puri sp. nov. (6) Sternite 5; (7) Cercal plate; (8) Aedeagus, lateral right view; (9) Ovipositor, ventral view; (10) Ovipositor, dorsal view; (11) Spermatheca.Published as part of Barbosa, Leandro Silva, Vieira, Angelina Pimentel & Couri, Marcia Souto, 2018, New species of Pseudoptilolepis Snyder, 1949 (Diptera: Muscidae) from Brazil, pp. 1-4 in Papéis Avulsos de Zoologia 58 on page 3, DOI: 10.11606/1807-0205/2018.58.47, http://zenodo.org/record/523554
Seed source and region effects on growth rate and survival of blue spruce (Picea pungens) Christmas trees in New Jersey
No full textSeedlings from five different seed sources of blue spruce Christmas trees were planted at five sites throughout New Jersey. Two sites in northern New Jersey and one in central New Jersey had significantly higher survival rates than the two in southern New Jersey. Additionally, the two sites in northern New Jersey had significantly faster growth rates than those in southern and central New Jersey. There were no significant differences in survival rates between seed sources. In terms of growth rates, however, seedlings from seeds obtained in Santa Fe National Forest, New Mexico grew significantly faster than seedlings from the other seed sources tested. This forther growth rate is predicted to shorten the time needed to reach marketability size by one to five years
Assessment of Hurricane Sandy damage and resulting loss in ecosystem services in a coastal-urban setting
No full textWe quantified the location and extent of damage from Hurricane Sandy in habitats within the complex coastal-urban region of Jamaica Bay, New York and calculated the values of ecosystem services (ESV) lost. Results were compared with those from Hurricane Katrina. We found that moderate flooding and sand deposition were the most prevalent types of damage, and they caused the most degradation to low salt marsh habitat. Compared with Hurricane Katrina, damage from Hurricane Sandy to built and natural capital was general lower for almost all categories except beach erosion. This was especially damaging due to the high levels of disturbance prevention ecosystem services beaches and dunes provide. Our impact index revealed that the majority of damage was minimal in severity (60%) and would likely be reversed within five years (62%), with a total possible loss of up to US$ 6.5 million for Jamaica Bay, NY. We demonstrated the use our results to identify vulnerable areas for protection and restoration, and to calculate gains in ESVs in each scenario. By quantifying the location, extent and type of damage from Hurricane Sandy and the ESVs lost, we can provide another dimension to protection and restoration efforts in this sensitive coastal-urban region.Peer reviewe
Application of the target fish community model to an urban river system
No full textSeveral models have been developed to assess the biological integrity of aquatic systems using fish community data. One of these, the target fish community (TFC) model, has been used primarily to assess the biological integrity of larger, mainstem rivers in southern New England with basins characterized by dispersed human activities. We tested the efficacy of the TFC approach to specify the fish community in the highly urbanized Charles River watershed in eastern Massachusetts. To create a TFC for the Charles River we assembled a list of fish species that historically inhabited the Charles River watershed, identified geomorphically and zoogeographically similar reference rivers regarded as being in high quality condition, amassed fish survey data for the reference rivers, and extracted from the collections the information needed to define a TFC. We used a similarity measurement method to assess the extent to which the study river community complies with the TFC and an inference approach to summarize the manner in which the existing fish community differed from target conditions. The five most abundant species in the TFC were common shiners (34%), fallfish (17%) redbreast sunfish (11%), white suckers (8%), and American eel (7%). Three of the five species predicted to be most abundant in the TFC were scarce or absent in the existing river community. Further, the river was dominated by macrohabitat generalists (99%) while the TFC was predicted to contain 19% fluvial specialist species, 43% fluvial dependent species, and 38% macrohabitat generalist species. In addition, while the target community was dominated by fish intolerant (37%) and moderately tolerant (39%) of water quality degradation, the existing community was dominated by tolerant individuals (59%) and lacked intolerant species expected in the TFC. Similarity scores for species, habitat use specialization, and water quality degradation tolerance categories were 28%, 35% and 66%, respectively. The clear pattern of deviations from target conditions when observing fish habitat requirements strongly suggests that physical habitat change should be a priority for river enhancement in the Charles River. Comparison of our target and existing fish communities to those from a comprehensive study of Northeastern fish assemblage responses to urban intensity gradients revealed very similar results. Likewise, comparison of our TFC community and affinity scores to those of other TFCs from similar regions also yielded similar results and encouraging findings. Based on the positive results of these comparisons, the utility of the findings from the inference approach, and the widespread adoption of the TFC in the Northeast US, it appears that the TFC approach can be used effectively to identify the composition of a healthy fish community and guide river enhancements in both highly urbanized and non-urbanized streams and rivers in the Northeast US.Peer reviewe
Modeling Coastal Vulnerability Through Space and Time
No full textCoastal ecosystems experience a wide range of stressors including wave forces, storm surge, sea-level rise, and anthropogenic modification and are thus vulnerable to erosion. Urban coastal ecosystems are especially important due to the large populations these limited ecosystems serve. However, few studies have addressed the issue of urban coastal vulnerability at the landscape scale with spatial data that are finely resolved. The purpose of this study was to model and map coastal vulnerability and the role of natural habitats in reducing vulnerability in Jamaica Bay, New York in terms of nine coastal vulnerability metrics (relief, wave exposure, geomorphology, natural habitats, exposure, exposure with no habitat, habitat role, erodible shoreline, and surge) under past (1609), current (2015), and future (2080) scenarios using InVEST 3.2.0. We analyzed vulnerability results both spatially and across all time periods, by stakeholder (ownership), and by distance to damage from Hurricane Sandy. We found significant differences in vulnerability metrics between past, current and future scenarios for all nine metrics except relief and wave exposure. The marsh islands in the center of the bay are currently vulnerable. In the future, these islands will likely be inundated, placing additional areas of the shoreline increasingly at risk. Significant differences in vulnerability exist between stakeholders; the Breezy Point Cooperative and Gateway National Recreation Area had the largest erodible shoreline segments. Significant correlations exist for all vulnerability (exposure/surge) and storm damage combinations except for exposure and distance to artificial debris. Coastal protective features, ranging from storm surge barriers and levees to natural features (e.g. wetlands), have been promoted to decrease future flood risk to communities in coastal areas around the world. Our methods of combining coastal vulnerability results with additional data and across multiple time periods have considerable potential to provide valuable predictions that resource managers can effectively use to identify areas for restoration and protection.Peer reviewe
Influences of habitat and land cover on fish distributions along a tributary to Lake Ontario, New York
No full textInfluences of habitat and land cover on fish distributions were determined along a lentic-lotic gradient along a tributary to Lake Ontario, New York. Nonmetric multidimensional scaling, cluster analysis, and specific characterization methods were used to classify the fish species into five groups based on their similar patterns of distribution, species-specific habitat relationship, and relative abundance observed along the gradient. A stepwise regression approach was used to select the best habitat and land cover variables to explain variations in the distribution pattern of each fish group. Distribution patterns of the five fish groups were significantly explained by either a set of the selected habitat or land cover predictor variables or a combination of both. Of the 10 habitat variables, water depth, current velocity, aquatic plants, algae, woody debris, sand, and rock-bedrock were selected to explain the variations in distribution patterns of one or more fish groups. Of the 16 land cover types, evergreen wetlands, evergreen plantations, successional shrubs, shrub swamps, roads, and urban areas were selected to explain the variations in distribution patterns of at least one fish group.Peer reviewe
Quantification of Impacts and Ecosystem Services Loss in New Jersey Coastal Wetlands Due to Hurricane Sandy Storm Surge
No full textThe effects of Hurricane Sandy storm surge on wetland degradation and consequent loss of ecosystem services were estimated for coastal wetlands in New Jersey. Research in this field has qualitatively determined the effects of hurricanes on wetlands; however, there has been little quantification of wetland degradation and absolutely no assessment of impact to ecosystem services following a hurricane. Wetland degradation was mapped and quantified by comparing pre- and post-Sandy aerial photography from 2012. Loss of ecosystem services was estimated based on degree of wetland degradation. Our wetland degradation analysis found that the main mechanisms behind degradation were erosion, deposition and marsh salinization. Moderate flooding and marsh dieback were the most prevalent types of damage, and saline marshes and herbaceous wetlands were the most degraded wetland types. Severe degradation was most prevalent, occurring in 41.38 % of the wetlands. In addition, we found that 51.05 % of the degradation was long-term damage. In our ecosystem service loss analysis, we created a range of monetary values to show the distribution of damage. Monetary loss within New Jersey ranged up to 9.4 billion provided by wetlands (47 %). Our wetland degradation quantification and ecosystem service loss analysis provide insight into the impacts from storm surge damage and offers a novel methodology for remediation and restoration efforts.Peer reviewe
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