The influence of hydrological regimes on sex ratios and spatial segregation of the sexes in two dioecious riparian shrub species in northern Sweden

River management practices have altered the hydrological regimes of many rivers and also altered the availability of regeneration niches for riparian species. We investigated the impact of changed hydrological regimes on the sex ratios and the Spatial Segregation of the Sexes (SSS) in the dioecious species Salix myrsinifolia Salisb.–phylicifolia L. and S. lapponum L. by studying the free-flowing Vindel River and the regulated Ume River in northern Sweden. We surveyed sex ratios of these species in 12 river reaches on the Vindel River and in 17 reaches on the Ume River. In addition, we surveyed the sex and location above mean river stage of 1,002 individuals across both river systems to investigate the SSS of both species. Cuttings were collected from male and female individuals of S. myrsinifolia–phylicifolia from both rivers and subjected to four different water table regimes in a greenhouse experiment to investigate growth response between the sexes. We found an M/F sex ratio in both river systems similar to the regional norm of 0.62 for S. myrsinifolia–phylicifolia and of 0.42 for S. lapponum. We found no evidence of SSS in either the free-flowing Vindel River or the regulated Ume River. In the greenhouse experiment, hydrological regime had a significant effect on shoot and root dry weight and on root length. Significantly higher shoot dry weights were found in females than in males and significantly different shoot and root dry weights were found between cuttings taken from the two rivers. We concluded that changed hydrological regimes are likely to alter dimensions of the regeneration niche and therefore to influence sex ratios and SSS at an early successional stage, making it difficult to find clear spatial patterns once these species reach maturity and can be sexed

Les fonctionnalités de l'espace : une approche de la multifonctionnalité pour évaluer les impacts des changements d'usage de l'espace sur la durabilité

[Departement_IRSTEA]GT [TR1_IRSTEA]RURAMEN / AMANDEInternational audienceThe dramatic changes in land use observed in Europe in the last fifty years have generally resulted in improvement of human welfare and economic development. On the other hand, they have caused serious environmental problems. There is therefore a need for approaches that help to understand in an integrative way the economic, environmental and societal impacts that land use changes have on sustainability. Sustainability Impact Assessment (SIA), which assesses the impact of policies on sustainability, addresses this challenge. SIA partly builds on the concept of the multifunctionality of land which helps to deal with the complexity of interactions between different land uses, their temporal and spatial changes, and finally how policies might steer those changes towards sustainability. Following this need for true integration of economic, environmental and societal issues across policy areas at a meaningful spatial scale, an nterdisciplinary team in the SENSOR project has developed an innovative conceptual framework to assess the impact of policies on land sustainability at various levels of spatial aggregation i.e. the Land Use Functions (LUFs) framework. LUFs are the goods and services provided by the different land uses that summarise the most relevant economic, environmental and societal issues of a region. The LUFs framework integrates the changes observed in a large set of impact indicators into nine Land Use Functions (LUFs), which are balanced among the three pillars of sustainability. The LUFs framework makes it possible for policy makers, scientists and stakeholders to identify at a glance those functions of the land which are hindered or enhanced under various scenarios of land use change, and makes it possible to explore the trade-offs between them. The LUFs framework allows therefore the building of assessment across disciplines, sectors and the three sustainability dimensions. It has proved to be very helpful for the systematisation of relevant sustainability indicators within SENSOR and is intended to be further used in other projects as a tool for Sustainability Impact Assessment. The rationale leading to the LUFs concept, its definition and the conceptual framework is described in this chapter. We conclude that the concept of LUFs allows users to make explicit the analytical links between multifunctional land use and sustainable development, and therefore to look at multifunctionality as a way towards sustainability.Dans le cadre du projet SENSOR, une équipe interdisciplinaire a développé un cadre conceptuel pour l'évaluation des impacts des politiques sur la durabilité des usages de l'espace. Il repose sur l'identification de diverses fonctions assurées par l'espace et permet d'évaluer les effets des changements des usages de l'espace sur ces fonctions. Le concept permet de mettre en relation la multifonctionnalité des usages de l'espace et la durabilité du développement : maintenir la première conditionne la seconde

Les fonctionnalités de l'espace : une approche de la multifonctionnalité pour évaluer les impacts des changements d'usage de l'espace sur la durabilité

[Departement_IRSTEA]GT [TR1_IRSTEA]RURAMEN / AMANDEInternational audienceThe dramatic changes in land use observed in Europe in the last fifty years have generally resulted in improvement of human welfare and economic development. On the other hand, they have caused serious environmental problems. There is therefore a need for approaches that help to understand in an integrative way the economic, environmental and societal impacts that land use changes have on sustainability. Sustainability Impact Assessment (SIA), which assesses the impact of policies on sustainability, addresses this challenge. SIA partly builds on the concept of the multifunctionality of land which helps to deal with the complexity of interactions between different land uses, their temporal and spatial changes, and finally how policies might steer those changes towards sustainability. Following this need for true integration of economic, environmental and societal issues across policy areas at a meaningful spatial scale, an nterdisciplinary team in the SENSOR project has developed an innovative conceptual framework to assess the impact of policies on land sustainability at various levels of spatial aggregation i.e. the Land Use Functions (LUFs) framework. LUFs are the goods and services provided by the different land uses that summarise the most relevant economic, environmental and societal issues of a region. The LUFs framework integrates the changes observed in a large set of impact indicators into nine Land Use Functions (LUFs), which are balanced among the three pillars of sustainability. The LUFs framework makes it possible for policy makers, scientists and stakeholders to identify at a glance those functions of the land which are hindered or enhanced under various scenarios of land use change, and makes it possible to explore the trade-offs between them. The LUFs framework allows therefore the building of assessment across disciplines, sectors and the three sustainability dimensions. It has proved to be very helpful for the systematisation of relevant sustainability indicators within SENSOR and is intended to be further used in other projects as a tool for Sustainability Impact Assessment. The rationale leading to the LUFs concept, its definition and the conceptual framework is described in this chapter. We conclude that the concept of LUFs allows users to make explicit the analytical links between multifunctional land use and sustainable development, and therefore to look at multifunctionality as a way towards sustainability.Dans le cadre du projet SENSOR, une équipe interdisciplinaire a développé un cadre conceptuel pour l'évaluation des impacts des politiques sur la durabilité des usages de l'espace. Il repose sur l'identification de diverses fonctions assurées par l'espace et permet d'évaluer les effets des changements des usages de l'espace sur ces fonctions. Le concept permet de mettre en relation la multifonctionnalité des usages de l'espace et la durabilité du développement : maintenir la première conditionne la seconde

Sandplay, clay and sticks:multi-sensory research methods to explore the long-term influence of childhood play experience on mental well-being.

In this contribution we discuss the advantages of using multi-sensory methodologies in our study into the long-term mental health effects of different kinds of childhood play space. Working with a small group of young people aged 16-21 years old; we used a multi-method approach including practical workshops where the young people took part in a day of woodland activities and artwork sessions. We argue that use of such practical methodologies is particularly appropriate in research with teenagers and young adults, helping to overcome their self-consciousness and supporting their need to explore and articulate memories, feelings and ideas