Publications by authors named "P Lawn"

With amphibian populations facing a multitude of threats, including habitat loss, climate change, invasive species and infectious diseases, it is important to identify valuable amphibian habitat and the imminent pressures these environments face. Between 2004 and 2019, 6 years of amphibian surveys were conducted at Greenburn, Roe and McLean lakes in the Southern Gulf Islands of British Columbia, Canada. We assessed (1) species composition and trends of native amphibians, including at-risk northern red-legged frog (Rana aurora); (2) observations of invasive American bullfrog (Lithobates catesbeianus); and (3) the efficacy of visual encounter and trapping survey methods in determining multi-species amphibian occupancy.

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Most ecological economists believe that the transition to a steady-state economy is necessary to ensure ecological sustainability and to maximize a nation's economic welfare. While some observers agree with the necessity of the steady-state economy, they are nonetheless critical of the suggestion made by ecological economists-in particular, Herman Daly-that a steady-state economy is compatible with a capitalist system. First, they believe that steady-state capitalism is based on the untenable assumption that growth is an optional rather than in-built element of capitalism.

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To successfully achieve biodiversity conservation, the amount of ecosystem structure available for economic production must be determined by, and subject to, conservation needs. As such, the scale of economic systems must remain within the limits imposed by the need to preserve critical ecosystems and the regenerative and waste assimilative capacities of the ecosphere. These limits are determined by biophysical criteria, yet macroeconomics involves the use of economic instruments designed to meet economic criteria that have no capacity to achieve biophysically based targets.

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To evaluate nutrient intake and food consumption patterns of Inuit women of child-bearing age, a 24-hour diet recall and general health and food frequency questionnaire was administered to 688 Inuit women aged 15-44 in six isolated communities. Data were analyzed using the 1991 Canadian Nutrient File. Mean intakes of essential nutrients were expressed as percentages of Health Canada's 1990 Recommended Nutrient Intakes (RNI).

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Based on a needs assessment of native treatment centres and a pilot training project, a 10-day nutrition workshop was offered to 49 counsellors and cooks from 30 native treatment centres from six provinces. Objectives were to: 1) improve the understanding of the effect of alcohol on health and nutrition; 2) to improve the understanding of the role of nutrition in rehabilitation; 3) to clarify their respective roles and 4) to improve skills in menu planning for recovery and special diets, food safety procedures and cooking techniques appropriate for recovery. Assessment, counselling and treatment were considered in relation to native cultural values, meeting basic human needs and counselling theory.

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