195 research outputs found

    Identifying Regional Priority Areas for Focusing Conservation Actions in Streams and Grasslands: Conservation Planning

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    In the United States, many resources devoted to conservation are routed through states, but animal and plant populations do not conform to state boundaries. Consequently, neighboring states can enhance their collective conservation impact by coordinating natural resources management. In order to support managers as they review and revise state Wildlife Action Plans in Illinois, Indiana, Michigan, and Wisconsin, this project identified regional conservation priorities for streams and grasslands of the Upper Midwest. Specifically, we (1) selected stream and grassland species of common conservation interest to partnering states, (2) modeled and mapped regional distributions of these species, and (3) used predicted species occurrences to identify regional conservation focal areas.We focused on 31 native grassland and stream species: eight birds, 10 freshwater mussels, 12 fish, and one salamander. The birds, mussels, salamander, and one fish were listed as Species of Greatest Conservation Need (SGCNs) by at least two participating states (Table 1). The remaining 11 fish were reproductive hosts for the selected freshwater mussels. With the help of state Departments of Natural Resources, Natural Heritage programs, and other project partners (Table 3 and Acknowledgments), we compiled comprehensive occurrence data for all 31 species. We also downloaded environmental data for streams and grasslands across the Upper Midwest.We used the assembled species and environmental data to develop regional distribution models for all selected aquatic species and five of the selected grassland birds. The most reliable models were obtained from species with widespread survey data (e.g., fish, birds), although some rare species remained data-limited. It was more difficult to model species with presence-only observations (i.e., no absences recorded; e.g., Mudpuppy) or with surveys whose design or data availability differed among states (e.g., mussels). Predicted species distributions were used to identify regional focal areas for stream and grassland conservation. We used Marxan, a spatially explicit conservation planning software, to design reserve systems that most efficiently protect 10% of the regional populations of all selected SGCNs, which were mostly grassland birds and freshwater mussels. Marxan solutions that addressed these regional conservation priorities emphasized the importance of grassland protection in Illinois and Wisconsin and streams protection in Illinois, Indiana, and Michigan. Proposed focal areas often overlapped with Illinois and Wisconsin Conservation Opportunity Areas, Illinois State Acres For wildlife Enhancement (SAFE) Areas, and Chicago Wilderness’s Green Infrastructure Vision, but this project also points out new areas where conservation initiatives are likely to be effective. Relative to prior efforts, this project’s proposed grassland and stream reserve designs expand coverage to all of Illinois, Indiana, Michigan, and Wisconsin. 3The regional conservation priority maps for streams and grasslands can be used by natural resource managers to ensure that individual state conservation strategies contribute meaningfully to regional goals. State managers can also take a species-specific approach, identifying likely population hotspots within their state by referring to the included high-resolution maps of predicted species distributions. Conservation focal areas spanning state borders highlight opportunities where neighboring states might cooperate to more effectively manage shared natural resources. In summary, by modeling the spatial distributions of selected stream and grassland species, this project provides a regional perspective for conservation in the Upper MidwestIllinois Department of Natural Resources Office of Resource Conservation State Wildlife Grant Program T-94-R-1unpublishednot peer reviewedOpe

    1994 CSRS Research Reports/1994 Blueberry Tax Reports

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    The 1994 edition of the CSRS Research Reports/Blueberry Tax Reports was prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include: CSRS Research Reports 1. Potential Uses for Green and Red Cull Blueberries 2. Preventing the Bleeding of Blueberry Fruit in Bakery Products 3. The Effect of Fertilization and Irrigation on Blueberry Fruit Quality 4. Determination of Pesticide Residue Levels in Freshly Harvested and Processed Lowbush Blueberries 5. The Effect of Mechanical Harvesting on Blueberry Fruit Quality 6. Removing Water from Blueberries Before Freezing 7. Application of Heat as a Method of Controlling Secondary Pest Insects in Lowbush Blueberries 8. Evaluation of Effectiveness of Eumenid Wasps for Biocontrol of Blueberry Pests 9. Pollination Ecology of Lowbush Blueberry in Maine 10. Fungicide Treatment for Control of Monilinia Blight 11. Field Sanitation for Control of Monilinia Blight 12. Cold-hardiness of Native Lowbush Blueberry 13. Phosphorus Dose/Response Curve 14. Multiple Cropping of Wild Blueberry Stands 15. Effect of Soil pH on Nutrient Uptake 16. Effect of Boron and Calcium on Lowbush Blueberry Fruit Set and Yield 17. Effect of Time of Fall Pruning on Growth and Productivity of Lowbush Blueberries 18. A Reinvestigation of the Economics of Mechanical Harvesting 19. Thresholds of Mechanical and Chemical Weed Controls in Wild Blueberries 20. Evaluation of Pressurized Rope Wick Master Wiper for Treating Weeds Growing Above Lowbush Blueberries 21. Evaluation of Infrared Burner for Selective Weed Control Blueberry Tax Reports 22. Control of Blueberry Pest Insects 23. Biology and Action Thresholds of Secondary Blueberry Pest Insects 24. Pollination Ecology of Low bush Blueberry in Maine 25. Nitrogen-Phosphorus Study 26. Evaluation of Pronone 10G for Control of Weeds in Lowbush Blueberries 27. Evaluation of Tribenuron Methyl for Bunchberry Control 28. Evaluation of Pendimethalin for Control of Annual Grasses in Lowbush Blueberries 29. Evaluation of Time of Application of Clopyralid for Control of Vetch, and Effect on Flowering of Lowbush Blueberries 30. Hexazinone Ground Water survey 31. Blueberry Extension Program Base 32. Blueberry ICM Program for Hancock Count

    1993 Progress Reports

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    The 1993 Progress Reports which contain Blueberry Tax Supported Weed Management and Pruning Project Reports, and CSRS Supported Weed Management and Pruning Project Reports, pertain to and report on research conducted in 1992. They were prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include: Progress Reports 1. Effects of Irrigation on Low bush Blueberry Yield and Quality 2. Economics of Investing in Irrigation for Lowbush Blueberries 3. Diammonium Phosphate Study 4. Phosphorus Dose/Response Curve 5. Winter Injury Protection by Potassium 6. Multiple Cropping of Wild Stands 7. Effect of Boron on Lowbush Blueberry Fruit Set and Yield 8.Determination of Pesticide Residue Levels in Freshly Harvested and Processed Lowbush Blueberries 9. Effects of Calcium Salts and Citric Acids on the Quality of Canned Lowbush Blueberries- missing 10. Investigation of PreProcess Changes- missing 11. The Effect of Fertilization and Irrigation on Blueberry Fruit Control - missing 12. Pollination Ecology of Lowbush Blueberry in Maine 13. Control of Secondary Blueberry Pests 14. Control of Blueberry Maggot 15. Biology and Action Thresholds of Secondary Blueberry Pests 16. Cold-Hardiness of Native Lowbush Blueberries 17. Design, Fabrication, and Testing of an Experimental Sterilizer for Blueberry Fields 18. Canned Product Quality - Heat Resistant Molds 19. Sanitation for Disease Control Blueberry Tax Supported Weed Management and Pruning Project Reports 20. Evaluation of Postemergence Applications of Tribenuron Methyl for Bunchberry Control 21. Comparison of Poast and Select for Suppression of Bunchgrass 22. Effect of Time of Fall Pruning on Growth and Productivity of Blueberries. and Evaluation of Infrared Burner to Prune Blueberries 23. Evaluation of Velpar impregnated DAP for weed control 24. Thresholds of Dogbane and Bracken Fern for Mechanical and Chemical Control in Lowbush Blueberry Fields 25. Effect of Time and Rate of Application of Clopyralid for Control of Vetch in Lowbush Blueberries 26. Hexazinone Ground Water Survey 27. Composting Blueberry Processing Waste 28. Hexazinone Movement in a Blueberry Soil in Maine CSRS Supported Weed Management and Pruning Project Reports 29. Evaluation of the Suitability of Remote Sensing to Evaluate Plant Cover in Lowbush Blueberry Fields 30. Obstruction Removal in Lowbush Blueberry Fields 31. Evaluation of Pressurized Rope Wick Wick Master Wiper for Treating Weeds Growing Above Lowbush Blueberries 32. Evaluation of Infrared Burner for Weed Control 33. Blueberry Extension Education Program Base Miscellaneous 34. Comparison of N, NP, and NPK Fertilizers to Correct Nitrogen and Phosphorus Deficienc

    1992 Blueberry Research Progress Reports

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    The 1992 Blueberry Research Progress Reports pertain to and report on research conducted in 1991, and were prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include: 1992 CSRS Progress Reports: 1. Investigation of Groundwater Resources 2. Sprinkler Irrigation 3. Investigation of Preprocess Changes Leading to Berry Spoilage 4. Effect of Fertilization and Irrigation on Blueberry Quality 5. Effects of Calcium Salts and Citric Acid on Quality of Canned Lowbush Blueberries 6. Pollination of Lowbush Blueberry by Native Bees 7. Application of Heat for Controlling Insects 8. Investigations of Lowbush Blueberry Fruit Bud Cold-Hardiness 9. Steam Sterilization in Lowbush Blueberry Fields 10. Heat-Tolerant Molds 11. Vacuum Sanitation for Disease Control 12. Evaluation of Infrared Burner for Weed Control 13. Evaluation and Modification of Commercial Herbicide Wipers 14. Evaluation of Remote Sensing to Estimate Plant Cover in Lowbush Blueberry Fields 15. Comparison of Three Mechanical Blueberry Harvesters vs. Hand Raking Advisory Committee Research Reports: 16. Biology and action thresholds of secondary blueberry insects 17. Control of secondary blueberry pests 18. Control of blueberry maggot 19. Effects of calcium salts and citric acid on the quality of canned lowbush blueberries 20. The effects of postharvest handling on the dietary fiber and ellagic acid content of lowbush blueberries 21. Investigation of preprocessing changes that could lead to development of simple and inexpensive method to measure preprocessing berry spoilage 22. Determination of pesticide residue levels in fresh and processed lowbush blueberries 23. Vacuum sanitation for disease control 24. Heat-tolerant molds 25. Seedling pruning study 26. Effect of time and rate of application of Clopyralid for control of Vetch in lowbush blueberries 27. Evaluation and modification of commercial herbicide wipers 28. Effect of time of application and formulation of Hexazinone (Velpar) on Blueberry and Bunchberry 29. Evaluation of postemergence applications of Tribenuron Methyl for Bunchberry control 30. Thresholds of Dogbane and Bracken Fern by mechanical and chemical control in lowbush blueberry fields 31. Evaluation of the suitability of remote sensing to evaluate plant cover in lowbush blueberry fields 32. Evalution of infrared burner for weed control 33. Effect of time of fall pruning on growth and productivity of blueberry and evaluation of infrared burner to prune blueberries 34. Effect of Boron on lowbush blueberry fruit set and yield 35. Winter injury protection by potassium 36. Multiple cropping of wild stands 37. Nitrogen-Phosphorus study 38. Phosphorus dose/response curve 39. Investigations of lowbush blueberry fruit bud cold-hardines

    1993-94 Progress Report

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    The 1993 edition of the Progress Reports was prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include: 1. Effects of irrigation on lowbush blueberry yield and quality 2. The Economics of investigating irrigation for lowbush blueberries 3. Phosphorus dose/response curve 4. Winter injury protection by potassium 5. Multiple cropping of wild stands 6. Effect of Boron and Calcium on lowbush blueberry fruit set and yield 7. Comparison of N, NP, and NPK fertilizers to correct nitrogen and phosphorus deficiency 8. Determination of pesticide residue levels in freshly harvested and processed lowbush blueberries 9. Effects of calcium salts and citric acid on the quality of canned lowbush blueberries 10. Investigation of preprocess changes (chemical, microbiological, and/or physical) that can lead to the development of a simple and inexpensive method to measure preprocess berry spoilage 11. The effect of fertilization and irrigation in blueberry fruit quality 12. Pollination Ecology of lowbush blueberry in Maine 13. Current importance of insects in lowbush blueberry fields 14. Application of heat as a method of controlling secondary pest insects on lowbush blueberry: a feasibility study 15. Control of blueberry maggot 16. Control of secondary blueberry pest insects 17. Biology and action thresholds of secondary blueberry pest insects 18. Cold-hardiness of native lowbush blueberry 19. Design, fabrication, and testing of an experimental sterilizer for blueberry fields 20. Canned Product Quality--Heat-resistant molds 21. Sanitation for disease control 22. Evaluation of Velpar® impregnated DAP and Pronone® for weed control 23. Evaluation of postemergence applications of tribenuron methyl for bunchberry control 24. Evaluation of postemergence applications of a tank mix of tribenuron methyl and hexazinone for bunchberry control 25. Thresholds of dogbane and bracken fem by mechanical and chemical control in lowbush blueberry fields 26. Effect of time of application of clopyralid for control of vetch and effect on flowering in lowbush blueberries 27. Effect of time of fall pruning on growth and productivity of blueberries and evaluation of infrared burner to prune blueberries 28. Evaluation of infrared burner for selective seedling weed control 29. Evaluation of pressurized rope wick Wick Master wiper for treating weeds growing above lowbush blueberries 30. Blueberry Extension Education Program Base 31. Blueberry ICM program for Hancock County 32. Composting blueberry processing waste 33. Hexazinone ground water survey 34. Investigations of Lowbush Blueberry Fruit bud Cold-hardiness 35. Design, Fabrication, and Testing of an Experimental Sterilizer for Blueberry Field

    Rapid Reactivation of Extralymphoid CD4 T Cells during Secondary Infection

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    After infection, extralymphoid tissues are enriched with effector and memory T cells of a highly activated phenotype. The capacity for rapid effector cytokine response from extralymphoid tissue-memory T cells suggests these cells may perform a ‘sentinel’ function in the tissue. While it has been demonstrated that extralymphoid CD4+ T cells can directly respond to secondary infection, little is known about how rapidly this response is initiated, and how early activation of T cells in the tissue may affect the innate response to infection. Here we use a mouse model of secondary heterosubtypic influenza infection to show that CD4+ T cells in the lung airways are reactivated within 24 hours of secondary challenge. Airway CD4+ T cells initiate an inflammatory cytokine and chemokine program that both alters the composition of the early innate response and contributes to the reduction of viral titers in the lung. These results show that, unlike a primary infection, extralymphoid tissue-memory CD4+ T cells respond alongside the innate response during secondary infection, thereby shaping the overall immune profile in the airways. These data provide new insights into the role of extralymphoid CD4+ T cells during secondary immune responses

    Prevention of Hypovolemic Circulatory Collapse by IL-6 Activated Stat3

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    Half of trauma deaths are attributable to hypovolemic circulatory collapse (HCC). We established a model of HCC in rats involving minor trauma plus severe hemorrhagic shock (HS). HCC in this model was accompanied by a 50% reduction in peak acceleration of aortic blood flow and cardiomyocyte apoptosis. HCC and apoptosis increased with increasing duration of hypotension. Apoptosis required resuscitation, which provided an opportunity to intervene therapeutically. Administration of IL-6 completely reversed HCC, prevented cardiac dysfunction and cardiomyocyte apoptosis, reduced mortality 5-fold and activated intracardiac signal transducer and activator of transcription (STAT) 3. Pre-treatment of rats with a selective inhibitor of Stat3, T40214, reduced the IL-6-mediated increase in cardiac Stat3 activity, blocked successful resuscitation by IL-6 and reversed IL-6-mediated protection from cardiac apoptosis. The hearts of mice deficient in the naturally occurring dominant negative isoform of Stat3, Stat3β, were completely resistant to HS-induced apoptosis. Microarray analysis of hearts focusing on apoptosis related genes revealed that expression of 29% of apoptosis related genes was altered in HS vs. sham rats. IL-6 treatment normalized the expression of these genes, while T40214 pretreatment prevented IL-6-mediated normalization. Thus, cardiac dysfunction, cardiomyocyte apoptosis and induction of apoptosis pathway genes are important components of HCC; IL-6 administration prevented HCC by blocking cardiomyocyte apoptosis and induction of apoptosis pathway genes via Stat3 and warrants further study as a resuscitation adjuvant for prevention of HCC and death in trauma patients

    Mucin Dynamics in Intestinal Bacterial Infection

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    Bacterial gastroenteritis causes morbidity and mortality in humans worldwide. Murine Citrobacter rodentium infection is a model for gastroenteritis caused by the human pathogens enteropathogenic Escherichia coli and enterohaemorrhagic E. coli. Mucin glycoproteins are the main component of the first barrier that bacteria encounter in the intestinal tract.Using Immunohistochemistry, we investigated intestinal expression of mucins (Alcian blue/PAS, Muc1, Muc2, Muc4, Muc5AC, Muc13 and Muc3/17) in healthy and C. rodentium infected mice. The majority of the C. rodentium infected mice developed systemic infection and colitis in the mid and distal colon by day 12. C. rodentium bound to the major secreted mucin, Muc2, in vitro, and high numbers of bacteria were found in secreted MUC2 in infected animals in vivo, indicating that mucins may limit bacterial access to the epithelial surface. In the small intestine, caecum and proximal colon, the mucin expression was similar in infected and non-infected animals. In the distal colonic epithelium, all secreted and cell surface mucins decreased with the exception of the Muc1 cell surface mucin which increased after infection (p<0.05). Similarly, during human infection Salmonella St Paul, Campylobacter jejuni and Clostridium difficile induced MUC1 in the colon.Major changes in both the cell-surface and secreted mucins occur in response to intestinal infection

    Creatine Monohydrate and Conjugated Linoleic Acid Improve Strength and Body Composition Following Resistance Exercise in Older Adults

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    Aging is associated with lower muscle mass and an increase in body fat. We examined whether creatine monohydrate (CrM) and conjugated linoleic acid (CLA) could enhance strength gains and improve body composition (i.e., increase fat-free mass (FFM); decrease body fat) following resistance exercise training in older adults (>65 y). Men (N = 19) and women (N = 20) completed six months of resistance exercise training with CrM (5g/d)+CLA (6g/d) or placebo with randomized, double blind, allocation. Outcomes included: strength and muscular endurance, functional tasks, body composition (DEXA scan), blood tests (lipids, liver function, CK, glucose, systemic inflammation markers (IL-6, C-reactive protein)), urinary markers of compliance (creatine/creatinine), oxidative stress (8-OH-2dG, 8-isoP) and bone resorption (Ν-telopeptides). Exercise training improved all measurements of functional capacity (P<0.05) and strength (P<0.001), with greater improvement for the CrM+CLA group in most measurements of muscular endurance, isokinetic knee extension strength, FFM, and lower fat mass (P<0.05). Plasma creatinine (P<0.05), but not creatinine clearance, increased for CrM+CLA, with no changes in serum CK activity or liver function tests. Together, this data confirms that supervised resistance exercise training is safe and effective for increasing strength in older adults and that a combination of CrM and CLA can enhance some of the beneficial effects of training over a six-month period. Trial Registration. ClinicalTrials.gov NCT0047390
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