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Durant SM, Marino A, Linnell JDC, Oriol-Cotterill A, Dloniak S, Dolrenry S, Funston P, Groom RJ, Hanssen L, Horgan J, Ikanda D, Ipavec A, Kissui B, Lichtenfeld L, McNutt JW, Mitchell N, Naro E, Samna A, Yirga G. Fostering Coexistence Between People and Large Carnivores in Africa: Using a Theory of Change to Identify Pathways to Impact and Their Underlying Assumptions. Front Conserv Sci 2022. [DOI: 10.3389/fcosc.2021.698631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Coexistence with large carnivores poses challenges to human well-being, livelihoods, development, resource management, and policy. Even where people and carnivores have historically coexisted, traditional patterns of behavior toward large carnivores may be disrupted by wider processes of economic, social, political, and climate change. Conservation interventions have typically focused on changing behaviors of those living alongside large carnivores to promote sustainable practices. While these interventions remain important, their success is inextricably linked to broader socio-political contexts, including natural resource governance and equitable distribution of conservation-linked costs and benefits. In this context we propose a Theory of Change to identify logical pathways of action through which coexistence with large carnivores can be enhanced. We focus on Africa's dryland landscapes, known for their diverse guild of large carnivores that remain relatively widespread across the continent. We review the literature to understand coexistence and its challenges; explain our Theory of Change, including expected outcomes and pathways to impact; and discuss how our model could be implemented and operationalized. Our analysis draws on the experience of coauthors, who are scientists and practitioners, and on literature from conservation, political ecology, and anthropology to explore the challenges, local realities, and place-based conditions under which expected outcomes succeed or fail. Three pathways to impact were identified: (a) putting in place good governance harmonized across geographic scales; (b) addressing coexistence at the landscape level; and (c) reducing costs and increasing benefits of sharing a landscape with large carnivores. Coordinated conservation across the extensive, and potentially transboundary, landscapes needed by large carnivores requires harmonization of top-down approaches with bottom-up community-based conservation. We propose adaptive co-management approaches combined with processes for active community engagement and informed consent as useful dynamic mechanisms for navigating through this contested space, while enabling adaptation to climate change. Success depends on strengthening underlying enabling conditions, including governance, capacity, local empowerment, effective monitoring, and sustainable financial support. Implementing the Theory of Change requires ongoing monitoring and evaluation to inform adaptation and build confidence in the model. Overall, the model provides a flexible and practical framework that can be adapted to dynamic local socio-ecological contexts.
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Weise FJ, Vijay V, Jacobson AP, Schoonover RF, Groom RJ, Horgan J, Keeping D, Klein R, Marnewick K, Maude G, Melzheimer J, Mills G, van der Merwe V, van der Meer E, van Vuuren RJ, Wachter B, Pimm SL. The distribution and numbers of cheetah (Acinonyx jubatus) in southern Africa. PeerJ 2017; 5:e4096. [PMID: 29250465 PMCID: PMC5729830 DOI: 10.7717/peerj.4096] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2017] [Accepted: 11/06/2017] [Indexed: 11/26/2022] Open
Abstract
Assessing the numbers and distribution of threatened species is a central challenge in conservation, often made difficult because the species of concern are rare and elusive. For some predators, this may be compounded by their being sparsely distributed over large areas. Such is the case with the cheetah Acinonyx jubatus. The IUCN Red List process solicits comments, is democratic, transparent, widely-used, and has recently assessed the species. Here, we present additional methods to that process and provide quantitative approaches that may afford greater detail and a benchmark against which to compare future assessments. The cheetah poses challenges, but also affords unique opportunities. It is photogenic, allowing the compilation of thousands of crowd-sourced data. It is also persecuted for killing livestock, enabling estimation of local population densities from the numbers persecuted. Documented instances of persecution in areas with known human and livestock density mean that these data can provide an estimate of where the species may or may not occur in areas without observational data. Compilations of extensive telemetry data coupled with nearly 20,000 additional observations from 39 sources show that free-ranging cheetahs were present across approximately 789,700 km2 of Namibia, Botswana, South Africa, and Zimbabwe (56%, 22%, 12% and 10% respectively) from 2010 to 2016, with an estimated adult population of 3,577 animals. We identified a further 742,800 km2 of potential cheetah habitat within the study region with low human and livestock densities, where another ∼3,250 cheetahs may occur. Unlike many previous estimates, we make the data available and provide explicit information on exactly where cheetahs occur, or are unlikely to occur. We stress the value of gathering data from public sources though these data were mostly from well-visited protected areas. There is a contiguous, transboundary population of cheetah in southern Africa, known to be the largest in the world. We suggest that this population is more threatened than believed due to the concentration of about 55% of free-ranging individuals in two ecoregions. This area overlaps with commercial farmland with high persecution risk; adult cheetahs were removed at the rate of 0.3 individuals per 100 km2 per year. Our population estimate for confirmed cheetah presence areas is 11% lower than the IUCN's current assessment for the same region, lending additional support to the recent call for the up-listing of this species from vulnerable to endangered status.
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Affiliation(s)
- Florian J. Weise
- CLAWS Conservancy, Worcester, MA, United States of America
- Center for Wildlife Management, University of Pretoria, Pretoria, South Africa
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
| | - Varsha Vijay
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
- Nicholas School of the Environment, Duke University, Durham, NC, United States of America
| | - Andrew P. Jacobson
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
- Nicholas School of the Environment, Duke University, Durham, NC, United States of America
| | - Rebecca F. Schoonover
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
- Nicholas School of the Environment, Duke University, Durham, NC, United States of America
| | - Rosemary J. Groom
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
- Range Wide Conservation Program for Cheetah and African Wild Dogs, The Zoological Society of London, London, United Kingdom
- African Wildlife Conservation Fund, Chishakwe Ranch, Savé Valley Conservancy, Zimbabwe
| | - Jane Horgan
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
- Cheetah Conservation Botswana, Gaborone, Botswana
| | - Derek Keeping
- Department of Renewable Resources, University of Alberta, Edmonton, Alberta, Canada
| | - Rebecca Klein
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
- Cheetah Conservation Botswana, Gaborone, Botswana
| | - Kelly Marnewick
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
- Endangered Wildlife Trust, Johannesburg, South Africa
| | - Glyn Maude
- Kalahari Research and Conservation, Maun, Botswana
- Department of Conservation and Research, Denver Zoological Foundation, Denver, CO, United States of America
| | - Jörg Melzheimer
- Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
| | - Gus Mills
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
- Lewis Foundation, South Africa
| | - Vincent van der Merwe
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
- Endangered Wildlife Trust, Johannesburg, South Africa
| | - Esther van der Meer
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
- Cheetah Conservation Project Zimbabwe, Victoria Falls, Zimbabwe
| | - Rudie J. van Vuuren
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
- N/a’an ku sê Foundation, Windhoek, Namibia
| | - Bettina Wachter
- Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
| | - Stuart L. Pimm
- Big Cats Initiative, National Geographic Society, Washington, D.C., United States of America
- Nicholas School of the Environment, Duke University, Durham, NC, United States of America
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Durant SM, Mitchell N, Groom R, Pettorelli N, Ipavec A, Jacobson AP, Woodroffe R, Böhm M, Hunter LTB, Becker MS, Broekhuis F, Bashir S, Andresen L, Aschenborn O, Beddiaf M, Belbachir F, Belbachir-Bazi A, Berbash A, Brandao de Matos Machado I, Breitenmoser C, Chege M, Cilliers D, Davies-Mostert H, Dickman AJ, Ezekiel F, Farhadinia MS, Funston P, Henschel P, Horgan J, de Iongh HH, Jowkar H, Klein R, Lindsey PA, Marker L, Marnewick K, Melzheimer J, Merkle J, M'soka J, Msuha M, O'Neill H, Parker M, Purchase G, Sahailou S, Saidu Y, Samna A, Schmidt-Küntzel A, Selebatso E, Sogbohossou EA, Soultan A, Stone E, van der Meer E, van Vuuren R, Wykstra M, Young-Overton K. The global decline of cheetah Acinonyx jubatus and what it means for conservation. Proc Natl Acad Sci U S A 2017; 114:528-533. [PMID: 28028225 PMCID: PMC5255576 DOI: 10.1073/pnas.1611122114] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Establishing and maintaining protected areas (PAs) are key tools for biodiversity conservation. However, this approach is insufficient for many species, particularly those that are wide-ranging and sparse. The cheetah Acinonyx jubatus exemplifies such a species and faces extreme challenges to its survival. Here, we show that the global population is estimated at ∼7,100 individuals and confined to 9% of its historical distributional range. However, the majority of current range (77%) occurs outside of PAs, where the species faces multiple threats. Scenario modeling shows that, where growth rates are suppressed outside PAs, extinction rates increase rapidly as the proportion of population protected declines. Sensitivity analysis shows that growth rates within PAs have to be high if they are to compensate for declines outside. Susceptibility of cheetah to rapid decline is evidenced by recent rapid contraction in range, supporting an uplisting of the International Union for the Conservation of Nature (IUCN) Red List threat assessment to endangered. Our results are applicable to other protection-reliant species, which may be subject to systematic underestimation of threat when there is insufficient information outside PAs. Ultimately, conserving many of these species necessitates a paradigm shift in conservation toward a holistic approach that incentivizes protection and promotes sustainable human-wildlife coexistence across large multiple-use landscapes.
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Affiliation(s)
- Sarah M Durant
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom;
- Wildlife Conservation Society, New York, NY 10460
- Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, United Kingdom
| | - Nicholas Mitchell
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Wildlife Conservation Society, New York, NY 10460
| | - Rosemary Groom
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Wildlife Conservation Society, New York, NY 10460
| | - Nathalie Pettorelli
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, United Kingdom
| | - Audrey Ipavec
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Wildlife Conservation Society, New York, NY 10460
| | - Andrew P Jacobson
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Department of Geography, University College London, London WC1E 6BT, United Kingdom
| | - Rosie Woodroffe
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, United Kingdom
| | - Monika Böhm
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, United Kingdom
| | | | - Matthew S Becker
- Zambian Carnivore Programme, Mfuwe, Zambia
- Conservation Biology and Ecology Program, Department of Ecology, Montana State University, Bozeman, MT 59717
| | - Femke Broekhuis
- Wildlife Conservation Research Unit, Department of Zoology, University of Oxford, Oxford OX13 5QL, United Kingdom
- Mara Cheetah Project, Kenya Wildlife Trust, Kenya
| | - Sultana Bashir
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
| | - Leah Andresen
- Department of Zoology, Nelson Mandela Metropolitan University, Port Elizabeth 6031, South Africa
| | - Ortwin Aschenborn
- Bwabwata Ecological Institute, Susuwe Park Station, Zambezi Region, Ministry of Environment and Tourism, Namibia
| | - Mohammed Beddiaf
- Office National du Parc Culturel du Tassili N'Ajjer, Djanet, Algeria
| | - Farid Belbachir
- Laboratoire d'Écologie et Environnement, Université de Béjaïa, Béjaïa, Algeria
| | - Amel Belbachir-Bazi
- Laboratoire d'Écologie et Environnement, Université de Béjaïa, Béjaïa, Algeria
| | - Ali Berbash
- Nature Conservation Department, Environment General Authority (EGA), Tripoli, Libya
| | | | - Christine Breitenmoser
- Carnivore Ecology and Wildlife Management (KORA), 3074 Muri, Switzerland
- International Union for the Conservation of Nature/Species Survival Commission Cat Specialist Group, 3074 Muri, Switzerland
| | | | | | | | - Amy J Dickman
- Wildlife Conservation Research Unit, Department of Zoology, University of Oxford, Oxford OX13 5QL, United Kingdom
| | - Fabiano Ezekiel
- Department of Wildlife Management and Ecotourism, University of Namibia, Windhoek, Namibia
| | - Mohammad S Farhadinia
- Wildlife Conservation Research Unit, Department of Zoology, University of Oxford, Oxford OX13 5QL, United Kingdom
| | | | | | - Jane Horgan
- Cheetah Conservation Botswana, Gaborone, Botswana
| | - Hans H de Iongh
- Institute of Environmental Sciences, Leiden University, 2300 RA Leiden, The Netherlands
| | - Houman Jowkar
- Persian Wildlife Heritage Foundation, Tehran 15856-86341, Iran
- Conservation of Asiatic Cheetah Program, Department of Environment, Tehran, Iran
| | | | | | | | | | - Joerg Melzheimer
- Department Evolutionary Ecology, Leibniz Institute for Zoo and Wildlife Research, 10315 Berlin, Germany
| | | | - Jassiel M'soka
- Department of National Parks and Wildlife, Chilanga, Zambia
| | - Maurus Msuha
- Tanzania Wildlife Research Institute, Arusha, Tanzania
| | - Helen O'Neill
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
- Department of Genetics, Evolution and Environment, University College London, London WC1E 6BT, United Kingdom
| | - Megan Parker
- Working Dogs for Conservation, Bozeman, MT 59771
| | - Gianetta Purchase
- Institute of Zoology, Zoological Society of London, London NW1 4RY, United Kingdom
| | - Samaila Sahailou
- Direction de la Faune, de la Chasse et des Aires Protégées, Niamey, Niger
| | - Yohanna Saidu
- Nigeria National Park Service, Garki, Abuja, Nigeria
| | - Abdoulkarim Samna
- Direction de la Faune, de la Chasse et des Aires Protégées, Niamey, Niger
| | | | | | | | | | - Emma Stone
- Carnivore Research Malawi, Conservation Research Africa, Lilongwe, Malawi
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Van der Weyde LK, Hubel TY, Horgan J, Shotton J, McKenna R, Wilson AM. Movement patterns of cheetahs (Acinonyx jubatus) in farmlands in Botswana. Biol Open 2017; 6:118-124. [PMID: 27913453 PMCID: PMC5278424 DOI: 10.1242/bio.021055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 11/30/2016] [Indexed: 11/20/2022] Open
Abstract
Botswana has the second highest population of cheetah (Acinonyx jubatus) with most living outside protected areas. As a result, many cheetahs are found in farming areas which occasionally results in human-wildlife conflict. This study aimed to look at movement patterns of cheetahs in farming environments to determine whether cheetahs have adapted their movements in these human-dominated landscapes. We fitted high-time resolution GPS collars to cheetahs in the Ghanzi farmlands of Botswana. GPS locations were used to calculate home range sizes as well as number and duration of visits to landscape features using a time-based local convex hull method. Cheetahs had medium-sized home ranges compared to previously studied cheetah in similar farming environments. Results showed that cheetahs actively visited scent marking trees and avoided visiting homesteads. A slight preference for visiting game farms over cattle farms was found, but there was no difference in duration of visits between farm types. We conclude that cheetahs selected for areas that are important for their dietary and social needs and prefer to avoid human-occupied areas. Improved knowledge of how cheetahs use farmlands can allow farmers to make informed decisions when developing management practices and can be an important tool for reducing human-wildlife conflict.
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Affiliation(s)
- L K Van der Weyde
- Cheetah Conservation Botswana, B5, Kgale Siding Office Park, Plot 1069-KO, Gaborone, Botswana
- San Diego Zoo, Institute for Conservation Research, 15600 San Pasqual Valley Road, Escondido, CA 92027-7000, USA
| | - T Y Hubel
- Structure and Motion Laboratory, Royal Veterinary College, University of London, Hatfield AL97TA, UK
| | - J Horgan
- Cheetah Conservation Botswana, B5, Kgale Siding Office Park, Plot 1069-KO, Gaborone, Botswana
| | - J Shotton
- Structure and Motion Laboratory, Royal Veterinary College, University of London, Hatfield AL97TA, UK
| | - R McKenna
- Cheetah Conservation Botswana, B5, Kgale Siding Office Park, Plot 1069-KO, Gaborone, Botswana
| | - A M Wilson
- Structure and Motion Laboratory, Royal Veterinary College, University of London, Hatfield AL97TA, UK
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5
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Hubel TY, Shotton J, Wilshin SD, Horgan J, Klein R, McKenna R, Wilson AM. Cheetah Reunion - The Challenge of Finding Your Friends Again. PLoS One 2016; 11:e0166864. [PMID: 27926915 PMCID: PMC5142782 DOI: 10.1371/journal.pone.0166864] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Accepted: 11/04/2016] [Indexed: 11/29/2022] Open
Abstract
Animals navigate their environment using a variety of senses and strategies. This multiplicity enables them to respond to different navigational requirements resulting from habitat, scale and purpose. One of the challenges social animals face is how to reunite after periods of separation. We explore a variety of possible mechanisms used to reunite the members of a cheetah coalition dispersed within a large area after prolonged separation. Using GPS data from three cheetahs reuniting after weeks of separation, we determined that 1) the likelihood of purely coincidental reunion is miniscule 2) the reunion occurred in an area not normally frequented 3) with very little time spent in the region in advance of the reunion. We therefore propose that timely encounter of scent markings where paths cross is the most likely mechanism used to aid the reunion.
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Affiliation(s)
- Tatjana Y. Hubel
- Structure and Motion Laboratory, Royal Veterinary College, Hatfield, UK
- * E-mail: (TYH)
| | - Justine Shotton
- Structure and Motion Laboratory, Royal Veterinary College, Hatfield, UK
| | - Simon D. Wilshin
- Structure and Motion Laboratory, Royal Veterinary College, Hatfield, UK
| | - Jane Horgan
- Cheetah Conservation Botswana, Kgale Siding Park, Plot 1069-KO, Gaborone, Botswana
| | - Rebecca Klein
- Cheetah Conservation Botswana, Kgale Siding Park, Plot 1069-KO, Gaborone, Botswana
| | - Rick McKenna
- Cheetah Conservation Botswana, Kgale Siding Park, Plot 1069-KO, Gaborone, Botswana
| | - Alan M. Wilson
- Structure and Motion Laboratory, Royal Veterinary College, Hatfield, UK
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Boast L, Houser A, Horgan J, Reeves H, Phale P, Klein R. Prey preferences of free-ranging cheetahs on farmland: scat analysis versus farmers' perceptions. Afr J Ecol 2016. [DOI: 10.1111/aje.12296] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Lorraine Boast
- Cheetah Conservation Botswana; Private Bag BO 284 Bontleng Post Office Gaborone Botswana
- Animal Demography Unit; Department of Biological Sciences; University of Cape Town; Rondebosch 7701 Cape Town South Africa
| | - AnnMarie Houser
- Cheetah Conservation Botswana; Private Bag BO 284 Bontleng Post Office Gaborone Botswana
| | - Jane Horgan
- Cheetah Conservation Botswana; Private Bag BO 284 Bontleng Post Office Gaborone Botswana
| | - Harriet Reeves
- Cheetah Conservation Botswana; Private Bag BO 284 Bontleng Post Office Gaborone Botswana
| | - Phale Phale
- Cheetah Conservation Botswana; Private Bag BO 284 Bontleng Post Office Gaborone Botswana
| | - Rebecca Klein
- Cheetah Conservation Botswana; Private Bag BO 284 Bontleng Post Office Gaborone Botswana
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Gunning P, Horgan J. Improving the Lavallée and Hidiroglou algorithm for stratification of skewed populations. J STAT COMPUT SIM 2007. [DOI: 10.1080/10629360600569170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Boland M, Fitzpatrick P, Scallan E, Daly L, Herity B, Horgan J, Bourke G. Trends in medical student use of tobacco, alcohol and drugs in an Irish university, 1973-2002. Drug Alcohol Depend 2006; 85:123-8. [PMID: 16735098 DOI: 10.1016/j.drugalcdep.2006.03.016] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2005] [Revised: 03/23/2006] [Accepted: 03/28/2006] [Indexed: 11/17/2022]
Abstract
Questionnaire surveys of medical students in an Irish university were carried out in 1973 (n=765), 1990 (n=522) and 2002 (n=537), with differentiation of western students (e.g., from the Republic of Ireland, the UK, or Australia) and non-western students (e.g., Malaysia). We report on changes in tobacco smoking, drinking and drug-taking over three decades, and we note that, among western students, estimated prevalence of being a current smoker has declined overall from 28.8% in 1973 to 15.3% in 1990 to 9.2% in 2002 (p<0.001), falling in both males (p<0.001) and females (p<0.01). Ex-smokers rose from 5.9% to 15.1% between 1990 and 2002, corresponding with the decline in current smokers. The prevalence of current drinkers has risen over the period, to 82.5% among western students in 2002 (p<0.05); female drinking has increased steadily since 1973 (p<0.001), and the overall proportion of CAGE-positive drinkers has risen since 1990 (p<0.001). The mean weekly alcohol consumption has risen in both sexes since 1990 (males 14.3 units to 19.4, p<0.01; females 6.0 to 9.5, p<0.001). There was an increase in the proportion of students ever offered drugs between 1973 and 2002 (p<0.001). Although smoking rates have fallen, our findings show a marked increase in alcohol and drug consumption between 1973 and 2002. Personal misuse of addictive substances by doctors may mean that doctors will fail to take misuse by patients seriously. A need for preventative and ameliorative action during the medical school years is clear.
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Affiliation(s)
- M Boland
- UCD School of Public Health and Population Science, University College Dublin, Ireland
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Brown A, Horgan J, Conway M, Fennell W, McCann H, Meaney B, O'Reilly M, Sullivan P. Thrombolytic therapy in acute myocardial infarction: Third Irish Working Party Consensus. Irish Thrombolysis Concenus Group. Ir J Med Sci 2000; 169:97-9. [PMID: 11006661 DOI: 10.1007/bf03166907] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
A case is presented of angina manifesting itself initially solely as vertex and occipital headache, accompanied by EKG changes, provoked by exercise and relieved by rest. It was totally relieved by coronary bypass surgery and, later, by angioplasty. Its mechanism is probably a variation on the neural convergence usually invoked to explain the more typical chest pain angina.
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Affiliation(s)
- A Grace
- Richmond Institute for Neurology and Neurosurgery, Beaumont Hospital, Dublin, Ireland
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12
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13
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Horgan J. Multicultural studies. Rates of depression vary widely throughout the world. Sci Am 1996; 275:24, 28. [PMID: 8966539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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O'Callaghan D, Stanton A, Rafferty S, Canton M, Murphy J, Harrington D, Connolly B, Horgan J. Are butter and cheese rich in monounsaturates beneficial in hyperlipidaemic patients? J Cardiovasc Risk 1996; 3:441-5. [PMID: 9048259 DOI: 10.1177/174182679600300505] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Reduction in intake of dairy products has long been recommended to reduce blood lipids. The value of monounsaturated fatty acids is increasingly recognized. METHODS We evaluated the effects of a monounsaturate-rich butter and cheese (B) produced by modifying the bovine diet on blood lipid levels of patients with type IIa hyperlipidaemia. We compared their effects with those of normal butter and cheese (A) and polyunsaturate-rich spread and cheese (C). Using a double cross-over design, we studied 30 patients of mean age 56.4 years (23 men, one woman excluded) over 6-week periods. RESULTS Approximately 35.5 g/day butter/cheese were consumed; no changes in serum total cholesterol, triglycerides, low-density lipoprotein, lipoprotein (a) or cholesterol: high-density lipoprotein (HDL) ratio were observed. HDL levels were higher in B(1.31 mmol/l) than in C (1.22 mmol/l; P < 0.05) and similar to those in A (1.28 mmol/l). HDL2 levels were higher in patients fed diet A(0.23 mmol/l) than they were in those fed diet C (0.19 mmol/l; P < 0.05) and similar to those in patients fed diet B (0.20 mmol/l). Serum HDL3 was significantly higher in patients fed diet B (1.11 mmol/l) than in those fed diet C (1.03 mmol/l; P < 0.05) but similar to that in patients fed diet A (1.06 mmol/l). CONCLUSIONS Moderate intake of modified dairy products may be of value and deserves further evaluation.
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Affiliation(s)
- D O'Callaghan
- Department of Cardiology, Beaumont Hospital, Dublin, Ireland
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Tormey V, Conlon PJ, Farrell J, Horgan J, Walshe JJ. Long-term successful management of refractory congestive cardiac failure by intermittent ambulatory peritoneal ultrafiltration. QJM 1996; 89:681-3. [PMID: 8917742 DOI: 10.1093/qjmed/89.9.681] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Despite advances in the pharmacological management of cardiac failure, some patients remain refractory to this therapy. However, improved understanding of the physiology and technique of peritoneal dialysis has recently allowed ambulatory peritoneal ultrafiltration to be applied to the treatment of patients with intractable heart failure. We report the management of three such patients with New York Heart Association (NYHA) class IV cardiac failure, each with a left ventricular ejection fraction < 20%. They had become unresponsive to maximum pharmacological management with inotropes, diuretics and ACE inhibitors. All patients had biochemical evidence of pre-renal azotemia. Initially, patients received aggressive ultrafiltration by continuous veno-venous haemofiltration (CVVH) or one- to two-hourly peritoneal dialysis exchanges until they achieved an optimal dry body weight. Once stabilized, they were converted to an intermittent ambulatory peritoneal ultrafiltration (IAPU) regimen of one to three exchanges per 24 h according to their individual needs. During an 18 +/- 10-month follow-up, their duration of hospital confinement was reduced by 85% and all three patients improved from class IV to class II cardiac failure. IAPU may have a useful role in the long-term management of intractable heart failure in a selected group of patients.
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Affiliation(s)
- V Tormey
- Department of Nephrology, Beaumont Hospital, Dublin, Ireland
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Horgan J. The world according to RNA. Experiments lend support to the leading theory of life's origin. Sci Am 1996; 274:27-30. [PMID: 8533064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Horgan J. The struggle within. Conflict between fetus and mother may trouble pregnancy. Sci Am 1995; 273:25-6. [PMID: 8525347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Farrell J, Gill D, Doyle G, Walshe JJ, Barry-Kinsella C, Doyle M, Farrell J, Walshe J, Abernathy VE, Murnaghan DJ, Higgins J, Darling M, Halligan A, O’Brien E, Conroy R, Walshe JJ, Middleton D, Martin J, Douglas JF, Vella J, Burke P, Hickey D, Staunton C, Little D, Keeling F, O’Callaghan J, Bouchier-Hayes D, Carmody M, Walshe J, Donohoe J, Buckley A, O’Meara N, McMahon M, Cronin CJ, Jefferson JA, Maxwell AP, Doherty CC, Hughes AE, Nevin NC, Browne G, Keogh JAB, Jefferson JA, Wright GD, Hughes AE, Doherty CC, Nevin NC, Spencer S, Spencer R, Hickey D, Walshe JJ, Spencer S, Murphy D, Farrell J, Walshe JJ, Maxwell AP, Doherty CC, Fogarty DG, Hughes AE, Nevin NC, Vella J, Campbell E, Doyle G, Carmody M, Donohoe J, Thomas G, Kelly D, Crosbie O, Hegarty J, Crowley C, Watson A, Keogh B, Tormey V, Conlon P, Farrell J, Horgan J, Donohoe J, Walshe JJ, Stafford DB, Johnson J, O’Callaghan J, Walshe J, Murphy BG, Yong A, McNamee PT, Leavey S, O’Neill D, Jennings S, Doyle G, Donohoe J, Carmody M. Irish nephrological society. Ir J Med Sci 1995. [DOI: 10.1007/bf02967210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Horgan J. It's all in the timing. Neurons may be more punctual than had been supposed. Sci Am 1995; 273:16, 18. [PMID: 7652524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Horgan J. The mystery of SIDS. A murder conviction revives questions about infant deaths. Sci Am 1995; 273:22-4. [PMID: 7652525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Oslizlok P, Duff D, Denham B, Penny WJ, Banning AP, Groves PH, Brewer L, Lewis MJ, Cheadle H, Crawford N, Kearney PP, Starkey IR, Fort S, McMurray JV, Shaw TR, Sutherland GR, Hennessy T, McCann H, Sugrue D, Foley DP, Melkert R, Keane D, Serruys PW, Vaughan CJ, O’Connell DP, McDonald D, Blake S, Garadah T, Mehana N, King G, Gearty G, Crean P, Walsh M, Galvin J, Codd MB, McCann HA, Sugrue DD, Gaylani NE, Weston C, Thomas A, Davies L, Tovey J, Musumeci F, Singh HP, Hargrove M, Fennell W, Aherne T, Crowley JJ, Hassanein H, Shapiro LM, McCrissican D, Morton P, O’Donnell AF, McBrinn S, McCarthy J, McCarthy D, Neligan MC, McGovern E, Herity NA, Allen JD, Silke B, Adgey AAJ, Johnston PW, Anderson J, McIlroy RL, Dunn HM, Nikookam K, McNeill AJ, Foley P, Foley D, de Jaegere P, Serruys P, O’Callaghan D, Vela J, Maguire M, Horgan J, Graham ANJ, Wilson CM, Hood JM, D’SA AABB, Khan MM, McClements B, Dalzell G, Campbell NPS, Webb SW, Shandall A, Buchalter MB, Northbridge DB, McMurray J, Dargie HJ, Sullivan PA, McLoughlin M, Varma MPS, Charleton P, Turkington E, Rusk RA, Richardson SG, Hale A, O’Shea JC, Murphy MB, Diamond P, McAleer B, Davies S, Kinnaird T, Duly E, McKenna CJ, Codd M, McGee HM, Browne C, Horgan JH. Irish cardiac society Proceedings of Annual General Meeting held 4th/5th November, 1994. Ir J Med Sci 1995. [DOI: 10.1007/bf02968121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Horgan J. The no-name virus. Questions linger after the four corners outbreak. Sci Am 1994; 271:34-6. [PMID: 7809594 DOI: 10.1038/scientificamerican1294-34] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Horgan J. Brain storm. Controlling chaos could help treat epilepsy. Sci Am 1994; 271:24. [PMID: 7997864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Horgan J. Daydreaming. Experiments reveal links between memory and sleep. Sci Am 1994; 271:32-3. [PMID: 7939567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Horgan J. High profile. The Simpson case raises the issue of DNA reliability. Sci Am 1994; 271:33, 36. [PMID: 7939568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Horgan J. Standing tall. Inner-ear bones provide clues to the emergence of bipedalism. Sci Am 1994; 271:22. [PMID: 7939564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Horgan J. Radon's risks. Is the EPA exaggerating the dangers of this ubiquitous gas? Sci Am 1994; 271:14, 16. [PMID: 8066429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Horgan J. Biowarfare wars. Critics ask whether the army can manage the program. Sci Am 1994; 270:22. [PMID: 8284659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Horgan J. Fractured functions. Does the brain have a supreme integrator? Sci Am 1993; 269:36-7. [PMID: 8266058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Horgan J. Genes and crime. A US plan to reduce violence rekindles an old controversy. Sci Am 1993; 268:24, 26, 29. [PMID: 8430295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Affiliation(s)
- J Horgan
- Department of Cardiology, Beaumont Hospital, Dublin, Republic of Ireland
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Horgan J. D2 or not D2. A barroom brawl over an "alcoholism gene". Sci Am 1992; 266:29, 32. [PMID: 1533054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Horgan J. Profile: Francis H.C. Crick. The Mephistopheles of neurobiology. Sci Am 1992; 266:32-3. [PMID: 1557629 DOI: 10.1038/scientificamerican0292-32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Horgan J. Exporting misery. A U.S. abortion ruling affects women's health worldwide. Sci Am 1991; 265:16, 18. [PMID: 1862327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Horgan J. Postal mortem. Drug test results may point to racial discrimination. Sci Am 1991; 264:22-3. [PMID: 2000481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Horgan J. Double trouble. When identical twins are not identical. Sci Am 1990; 263:25, 28. [PMID: 2270458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Horgan J. Bufo abuse. A toxic toad gets licked, boiled, teed up and tanned. Sci Am 1990; 263:26-7. [PMID: 2116032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Horgan J. Strength in numbers. Researchers begin combining compounds to fight AIDS. Sci Am 1990; 263:20. [PMID: 1695759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Horgan J. As birth-control options in the U.S. dwindle, more married women turn to sterilization. Sci Am 1990; 263:18. [PMID: 2374899 DOI: 10.1038/scientificamerican0790-18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Horgan J. Overview: schizophrenia. This devastating illness remains profoundly mysterious. Sci Am 1990; 262:37, 40. [PMID: 2343293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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