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- Janssen, M A, et al.
(författare)
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Toward a network perspective of the study of resilience in social-ecological systems
- 2006
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Ingår i: Ecology & Society. - : Resilience Alliance, Inc.. - 1708-3087. ; 11:1
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Tidskriftsartikel (refereegranskat)abstract
- Formal models used to study the resilience of social-ecological systems have not explicitly included important structural characteristics of this type of system. In this paper, we propose a network perspective for social-ecological systems that enables us to better focus on the structure of interactions between identifiable components of the system. This network perspective might be useful for developing formal models and comparing case studies of social-ecological systems. Based on an analysis of the case studies in this special issue, we identify three types of social-ecological networks: ( 1) ecosystems that are connected by people through flows of information or materials, ( 2) ecosystem networks that are disconnected and fragmented by the actions of people, and ( 3) artificial ecological networks created by people, such as irrigation systems. Each of these three archytypal social-ecological networks faces different problems that influence its resilience as it responds to the addition or removal of connections that affect its coordination or the diffusion of system attributes such as information or disease.
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| 2. |
- Gullström, Martin, 1968, et al.
(författare)
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Assessment of changes in the seagrass-dominated submerged vegetation of tropical Chwaka Bay (Zanzibar) using satellite remote sensing
- 2006
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Ingår i: Estuarine Coastal and Shelf Science. - : Elsevier BV. - 0272-7714. ; 67:3, s. 399-408
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Tidskriftsartikel (refereegranskat)abstract
- Spatial and temporal dynamics of submerged aquatic vegetation (SAV) cover were studied in the relatively pristine and seagrass-dominated area of Chwaka Bay, Zanzibar (Tanzania) by using satellite remote sensing. Through complementary field work the potential of the technique for change detection was verified. The general changes in SAV cover were examined using Landsat images from 1986, 1987, 1998, 2001 and 2003. Two of these images, from 1987 (Landsat TM) and 2003 (Landsat ETM+), were specifically analysed to create a map of the change in SAV cover. Overall, the general distribution of SAV stayed fairly stable over the period investigated, but the result also showed regions where significant alterations, both losses and gains, had occurred between the two years. Based on our findings and anecdotal information from local fishermen and seaweed farmers potential causative factors are discussed. It was concluded that a repeated mapping with satellite remote sensing is a suitable tool to monitor changes of seagrass and seaweed distribution in shallow tropical environments. (c) 2005 Elsevier Ltd. All rights reserved.
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| 3. |
- Gullström, Martin, et al.
(författare)
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Assessment of vegetation changes in seagrass communities of tropical Chwaka Bay (Zanzibar) using satellite remote sensing
- 2006
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Ingår i: Estuarine, Coastal and Shelf Science. - : Elsevier BV. - 0272-7714 .- 1096-0015. ; 67:3, s. 399-408
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Tidskriftsartikel (refereegranskat)abstract
- Spatial and temporal dynamics of submerged aquatic vegetation (SAV) cover were studied in the relatively pristine and seagrass-dominated area of Chwaka Bay, Zanzibar (Tanzania) by using satellite remote sensing. Through complementary field work the potential of the technique for change detection was verified. The general changes in SAV cover were examined using Landsat images from 1986, 1987, 1998, 2001 and 2003. Two of these images, from 1987 (Landsat TM) and 2003 (Landsat ETM+), were specifically analysed to create a map of the change in SAV cover. Overall, the general distribution of SAV stayed fairly stable over the period investigated, but the result also showed regions where significant alterations, both losses and gains, had occurred between the two years. Based on our findings and anecdotal information from local fishermen and seaweed farmers potential causative factors are discussed. It was concluded that a repeated mapping with satellite remote sensing is a suitable tool to monitor changes of seagrass and seaweed distribution in shallow tropical environments.
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| 4. |
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| 5. |
- Jensen, I-B, et al.
(författare)
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The AHA-study: Implementing evidence based measueres for retaining workability at work sites : Effects on lifestyle, workability and firm productivity. 9th International Congress of Behavioral Medicine. Bangkok, Thailand, Nov 29-Dec 2, 2006
- 2006
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Jensen IB, Bergstrom G, Bjorklund C, Fried I, Lisspers J, Nathell L, Hermansson U, Roos P, Bodin L, the AHAstudy group (2006). The AHA-study: Implementing evidence based measueres for retaining workability at work sites - Effcets on lifestyle, workability and firm productivity. Presented at the 9th International Congress of Behavioral Medicine. Bangkok, Thailand, Nov 29-Dec 2, 2006.
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| 6. |
- Johansson, C, et al.
(författare)
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Validity and responsiveness of the spinal cord index of function: an instrument on activity level.
- 2009
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Ingår i: Spinal cord : the official journal of the International Medical Society of Paraplegia. - : Springer Science and Business Media LLC.
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Tidskriftsartikel (refereegranskat)abstract
- Objectives:To evaluate the validity and responsiveness of the Spinal Cord Index of Function (SIF), a new instrument on activity level, measuring the ability to perform various transfers in non-walking patients with a spinal cord lesion.Settings:Spinal Injuries Unit, Sahlgrenska University Hospital, Gothenburg, Sweden.Methods:Twenty-nine patients with a spinal cord lesion classified as grade A, B or C according to the American Spinal Injury Association/International Medical Society of paraplegia classification were included. Each patient was evaluated from the acute phase until discharge, every second week, by their physiotherapist, according to SIF and the Swedish physiotherapy clinical outcome variables (S-COVS). To determine validity, Spearman's rho correlation coefficient was calculated between the total scores of SIF and S-COVS, and the determination coefficient was calculated. Responsiveness was determined by computing effect sizes.Results:Spearman's correlation between SIF and S-COVS was 0.933 and the determination coefficient was 0.87. The effect size for SIF was 9.1.Conclusion:The results of the study prove that SIF is a valid and sensitive instrument, which will be useful for physiotherapists in goal-planning programs and in evaluating progress during a patient's rehabilitation. SIF could also be used in research and in evaluating the patient's functional ability at follow-ups.Spinal Cord advance online publication, 16 June 2009; doi:10.1038/sc.2009.57.
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