title: Reflections on transgender immigration

authors: Seuffert, Nan

subjects: immigration

abstract: Recently, the Human Rights Commission of New Zealand has conducted an inquiry that has officially documented ‘the obstacles to dignity, equality and security for trans people’. The Australian Human Rights Commission has also recently conducted a sex and gender diversity project, and in 2006 the Equalities Review in the United Kingdom commissioned the largest research project ever untaken globally on trans people’s lives, reported in Engendered Penalties: Transgender and Transsexual People’s Experiences of Inequality and Discrimination. This article reflects on the implications of the issues raised by these recent reports and research for transgendered people immigrating to and from New Zealand. It also raises some parallel issues for Australia.

text: Reflections on transgender immigration Recently, the Human Rights Commission of New Zealand has conducted an inquiry that has officially documented ‘the obstacles to dignity, equality and security for trans people’. The Australian Human Rights Commission has also recently conducted a sex and gender diversity project, and in 2006 the Equalities Review in the United Kingdom commissioned the largest research project ever untaken globally on trans people’s lives, reported in Engendered Penalties: Transgender and Transsexual People’s Experiences of Inequality and Discrimination. This article reflects on the implications of the issues raised by these recent reports and research for transgendered people immigrating to and from New Zealand. It also raises some parallel issues for Australia.

year: 2009

title: Ecophysiology of desiccation/rehydration cycles in mosses and lichens

authors: Green, T.G. Allan

subjects: bryophyte

abstract: Although both lichens and bryophytes are all poikilohydric the groups seem to behave very differently. Bryophytes also show a clear preference for wetter areas and this seems to be a result of the different structures of the organisms. A lichen is algae (or cyanobacteria) suspended in a mycobiont with excess water often having a negative effect on photosynthesis. Bryophytes, in contrast, are true multicellular plants and can construct photosynthetic tissues that can effectively separate their photosynthetic and water storage functions. Under dry atmospheric conditions lichens and bryophytes will desiccate to low water contents and they become dormant. Ability to tolerate desiccation varies considerably both between and within the groups. Somewhat surprisingly, lichens appear to show less ability to tolerate long periods of desiccation than bryophytes, and even some vascular plants. Actual mechanisms of desiccation have been best studied in bryophytes and appear to be constitutive, no protein synthesis is required on rehydration to enable the commencement of metabolism and the necessary protection appears to be always present. Consistently high sucrose levels, for instance are reported from bryophytes. Cellular structure is often maintained when desiccated. Recovery from dryness also differs between the groups with bryophytes generally hydrating more slowly but there are large species differences. In general, rate of recovery may be related to the length of the hydrated activity period, species that hydrate and then dry rapidly, as on rock surfaces, recover rapidly. Species in habitats that remain wet for long periods once hydrated appear to recover more slowly from dryness. In addition to a photosynthetic response to light and temperature, the poikilohydric lichens and bryophytes also have a photosynthetic response to thallus water content. Starting with a dry thallus, addition of water will both increase the thallus water content and also allow photosynthesis and respiration to commence. Both processes increase almost linearly with further hydration at low water contents. Photosynthesis reaches a maximum at an optimal thallus water content (WCopt) that is strongly species dependant. In both groups this photosynthetic optimum represents full cellular turgor. At water contents above this optimum surface or external water can interfere with carbon dioxide uptake and can severely limit photosynthetic rates, especially in lichens. When thallus water contents are normalised to WCopt = 1, then the net photosynthesis (NP) response curves at water contents below WCopt are very similar for liverworts, mosses and higher plants, suggesting a common mechanism in controlling NP. It is suggested that this might be an inhibitor acting on Rubisco activity. In contrast to vascular plants both groups can carry out photosynthesis at lower, suboptimal thallus water contents and very low water potentials but the contribution that this makes to total carbon budget appears to be a major difference between the groups. Bryophytes seem to pass rapidly through this water content range when both drying and hydrating for tens of minutes are often enough. In contrast, it is now apparent that lichens are often active at low thallus water contents. They can not only hydrate from humid air alone, or from dew and fog, but can use these water sources very effectively, often achieving a major part of their annual carbon gain. Information on when the lichens and bryophytes are actually active is only recently starting to appear but, again, the groups seem to differ. Bryophytes strongly prefer wetter habitats and can be active and fully hydrated for long periods and seem to have excellent capacity to tolerate high light and UV radiation when wet. In contrast many lichens, in particular those with green algal symbionts, rarely seem to be hydrated for long periods, especially in high light conditions, and rapidly dry out. Lichens seem to be active mainly under suboptimal conditions one of which is suboptimal water content.

text: Ecophysiology of desiccation/rehydration cycles in mosses and lichens Although both lichens and bryophytes are all poikilohydric the groups seem to behave very differently. Bryophytes also show a clear preference for wetter areas and this seems to be a result of the different structures of the organisms. A lichen is algae (or cyanobacteria) suspended in a mycobiont with excess water often having a negative effect on photosynthesis. Bryophytes, in contrast, are true multicellular plants and can construct photosynthetic tissues that can effectively separate their photosynthetic and water storage functions. Under dry atmospheric conditions lichens and bryophytes will desiccate to low water contents and they become dormant. Ability to tolerate desiccation varies considerably both between and within the groups. Somewhat surprisingly, lichens appear to show less ability to tolerate long periods of desiccation than bryophytes, and even some vascular plants. Actual mechanisms of desiccation have been best studied in bryophytes and appear to be constitutive, no protein synthesis is required on rehydration to enable the commencement of metabolism and the necessary protection appears to be always present. Consistently high sucrose levels, for instance are reported from bryophytes. Cellular structure is often maintained when desiccated. Recovery from dryness also differs between the groups with bryophytes generally hydrating more slowly but there are large species differences. In general, rate of recovery may be related to the length of the hydrated activity period, species that hydrate and then dry rapidly, as on rock surfaces, recover rapidly. Species in habitats that remain wet for long periods once hydrated appear to recover more slowly from dryness. In addition to a photosynthetic response to light and temperature, the poikilohydric lichens and bryophytes also have a photosynthetic response to thallus water content. Starting with a dry thallus, addition of water will both increase the thallus water content and also allow photosynthesis and respiration to commence. Both processes increase almost linearly with further hydration at low water contents. Photosynthesis reaches a maximum at an optimal thallus water content (WCopt) that is strongly species dependant. In both groups this photosynthetic optimum represents full cellular turgor. At water contents above this optimum surface or external water can interfere with carbon dioxide uptake and can severely limit photosynthetic rates, especially in lichens. When thallus water contents are normalised to WCopt = 1, then the net photosynthesis (NP) response curves at water contents below WCopt are very similar for liverworts, mosses and higher plants, suggesting a common mechanism in controlling NP. It is suggested that this might be an inhibitor acting on Rubisco activity. In contrast to vascular plants both groups can carry out photosynthesis at lower, suboptimal thallus water contents and very low water potentials but the contribution that this makes to total carbon budget appears to be a major difference between the groups. Bryophytes seem to pass rapidly through this water content range when both drying and hydrating for tens of minutes are often enough. In contrast, it is now apparent that lichens are often active at low thallus water contents. They can not only hydrate from humid air alone, or from dew and fog, but can use these water sources very effectively, often achieving a major part of their annual carbon gain. Information on when the lichens and bryophytes are actually active is only recently starting to appear but, again, the groups seem to differ. Bryophytes strongly prefer wetter habitats and can be active and fully hydrated for long periods and seem to have excellent capacity to tolerate high light and UV radiation when wet. In contrast many lichens, in particular those with green algal symbionts, rarely seem to be hydrated for long periods, especially in high light conditions, and rapidly dry out. Lichens seem to be active mainly under suboptimal conditions one of which is suboptimal water content.

year: 2011

title: Pani me te rawakore: Home-making and Maori homelessness without hope or a home

authors: Groot, Shiloh Ann Maree

subjects: Social Science

abstract: The authors draw from interviews with Maori homeless people and relevant local and international literature to show homemaking practices by Maori for those living on the streets. The proposition is that Maori cultural practices shape a person's efforts to retain a positive sense of self and place, and to engage in home-making while dwelling on the streets. We consider colonialism and societal, developments that have impacted whanau (extended family) economically, culturally and socially, contributing to high rates of homelessness among Maori today. We argue that homelessness is endemic to experiences of colonialism, not only at the personal, but also at the iwi (tribe) level where many Maori have experienced over 150 years of being rendered out of place in their hau kainga (tribal homelands). Finally, we present a case study entitled 'Maia' to show common aspects of various Maori people who are homeless and who access services in Auckland.

text: Pani me te rawakore: Home-making and Maori homelessness without hope or a home The authors draw from interviews with Maori homeless people and relevant local and international literature to show homemaking practices by Maori for those living on the streets. The proposition is that Maori cultural practices shape a person's efforts to retain a positive sense of self and place, and to engage in home-making while dwelling on the streets. We consider colonialism and societal, developments that have impacted whanau (extended family) economically, culturally and socially, contributing to high rates of homelessness among Maori today. We argue that homelessness is endemic to experiences of colonialism, not only at the personal, but also at the iwi (tribe) level where many Maori have experienced over 150 years of being rendered out of place in their hau kainga (tribal homelands). Finally, we present a case study entitled 'Maia' to show common aspects of various Maori people who are homeless and who access services in Auckland.

year: 2015