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- Hanson, Hans, et al.
(author)
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Long-Term Evolution of a Long-Term Evolution Model
- 2011
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In: Journal of Coastal Research. - 0749-0208. ; :Special Issue 59, s. 118-129
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Journal article (peer-reviewed)abstract
- This paper reviews the 25-plus year history of significant developments of the GENESIS shoreline response model. Topics discussed are line sources and sinks of sand, representation of shore-normal structures including natural sand bypassing, wave transmission by and shoreline response to shore-parallel structures, seawalls, migrating longshore sand waves, seasonal variation by cross-shore sand transport, sand transport due to tidal and wind-generated currents, preservation of the regional shape of the shoreline, and the interaction between the beach berm and the dunes behind it. Such developments have been done in a consistent way, based on thorough literature reviews, beta testing, comparison to beach behavior, and quality control. The challenges have been not only to represent the features themselves, but to be consistent to the basic assumptions of shoreline modeling theory. Through these added capabilities, GENESIS has evolved to meet the challenges of modern, multi-scale, long-term coastal engineering applications.
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- Engström, Tomas, 1950, et al.
(author)
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Guidelines for Coupling of the Building Facilities to the External and Internal Demands Generated by the Society
- 2001
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Conference paper (other academic/artistic)abstract
- Here in this publication are we criticizing the way the building facilities are managed at e.g. Chalmers University of Technology (in fact a number of extremely long term failures to deal with building facilities in appropriate ways required at Chalmers have affected Engström’s and his research group members, two of these have been evaluated by external competencies) (besides, a visit to Chalmers even today will most certainly still underline this particular situation, i.e. at least for the trained eye familiar with public buildings and science demands) (similar situation is as reported also at hand elsewhere) (extreme rents for building facilities, are today signifying the operation at this and other universities).
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| 7. |
- Hanson, Helena I., et al.
(author)
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Agricultural land use affects abundance and dispersal tendency of predatory arthropods
- 2017
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In: Basic and Applied Ecology. - : Elsevier BV. - 1439-1791. ; 18, s. 40-49
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Journal article (peer-reviewed)abstract
- Predatory arthropods contribute to biological control, but to become an integral part of agricultural management, it is essential to identify drivers of their spatio-temporal distribution at the landscape scale. This study focuses on how agricultural land use affects the community composition, emergence and dispersal tendency of predatory arthropods. The arthropods were collected in emergence traps during the growing season (14 weeks) in a gradient of agricultural land uses from intensively managed sugar beet fields, over winter wheat fields, to less intensively managed grasslands. The emergence traps were equipped with one pitfall trap and a collecting bottle at the top. The distribution of the arthropods between these two collecting methods was assumed to represent their tendency to move out of the habitat. The grasslands had the highest numbers of spiders, while the winter wheat fields had the highest numbers of omnivorous rove beetles and macropterous predaceous ground beetles. The phenology of emergence differed between the land-use types, resulting in seasonal differences in community composition. The overall dispersal tendency of predatory arthropods was higher in crop fields than in grasslands. This study suggests that only a diverse mix of agricultural land uses will provide high levels of predators from different functional groups, throughout the growing season.
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- Hanson, Helena I., et al.
(author)
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Gardens’ contribution to people and urban green space
- 2021
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In: Urban Forestry and Urban Greening. - : Elsevier BV. - 1618-8667. ; 63
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Journal article (peer-reviewed)abstract
- Cities are experiencing numerous challenges, adversely affecting human health and wellbeing. Urban green space provides ecosystem services that are important to meet urban challenges. One type of urban green space is private gardens (yards) that make up an essential part of many urban areas. Gardens can support urban biodiversity and provide cultural ecosystem services (CES) to its owner. However, the provision of garden benefits depends on garden size, design and management. This study aims to explore private gardens contribution to urban biodiversity and garden owners’ wellbeing (in terms of CES), and to understand the influence of urban planning and garden design and management. We use a conceptual framework to illustrate complexities and interlinkages: the garden ‘human-nature’ nexus. The study is based on a garden land-use inventory and interviews with 35 garden owners in Lund, Sweden. Results show that urban development influence garden's biodiversity potential by limiting available space or garden vegetation. New properties were mainly covered by buildings and paved surfaces and their small gardens contained few biodiversity features and large trees. Garden owners used multiple information channels to gain inspiration and knowledge, and aesthetic and edibility are important plant qualities governing garden plant choice. Many garden owners experienced gardens problems that influence design and management. The most important garden CES were social bonds, recreation, nature experiences and relaxation. Age and gender influence both garden CES and garden design and management. We conclude that private gardens have a potential to function as multifunctional spaces, but to harness their full potential there is a need to transform how we plan, develop, manage and not at least recognize private green space. We argue that the garden ‘human-nature’ nexus can help to illustrate the important interlinkages existing between e.g. urban planning, biodiversity and garden ES, and to foster sustainable urban green space governance.
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