... 2) Methodology: a) Calculating transition probabilities: systematic interviews to establish m... more ... 2) Methodology: a) Calculating transition probabilities: systematic interviews to establish mental process + market indicators transferred to a model ... Integrating the environmental and sustainable development agendas into minerals education. R Van Berkel in Journal of Cleaner ...
Canadian Journal of Fisheries and Aquatic Sciences, 1984
... Quatre cours d'eau d'un bassin versant boreal non perturbe de Vest du Quebec ont fa... more ... Quatre cours d'eau d'un bassin versant boreal non perturbe de Vest du Quebec ont fait l'olsjet d'une etude visant a determiner ia composition, I'allure saisonniere et la masse seche sans cendre (MSSC) des apports aliochtones particulaires. ...
This special issue of Ecology and Society on restoring riverine landscapes draws together nine pr... more This special issue of Ecology and Society on restoring riverine landscapes draws together nine presentations from the Second International Symposium on Riverine Landscapes, convened in August 2004 in Storforsen, Sweden. We summarize three themes related to river restoration: (1) setting priorities, (2) identifying relevant reference conditions, and (3) choosing appropriate techniques. We discuss ways of developing river restoration and provide examples of future needs in sustaining functioning river ecosystems that can support human societies.
A confidential self-administered questionnaire was given to all donors prior to blood donation (n... more A confidential self-administered questionnaire was given to all donors prior to blood donation (n = 95,917). The questionnaire describes acquired immunodeficiency syndrome (AIDS) high-risk groups and requires the donor to designate his blood for either laboratory purposes or for transfusion. Six-hundred and twenty-seven people (0.65%; 78% men) designated their blood for laboratory purposes. In addition to routine enzyme-linked immunoassay (EIA) screening for human immunodeficiency virus (HIV) antibody, all units from the latter group of donors were tested by Western blot (WB) irrespective of the EIA result. An equal number of donor units was selected from those designating their blood for transfusion (age, sex and clinic matched) and these too were tested by WB irrespective of the EIA result. We found that donors designating their blood for laboratory purposes had a 10 times (vs transfusion-designated controls) to 100 times (vs general donor population) greater exposure to HIV. In the laboratory-designated group, an EIA negative donor was WB positive, yielding an estimated EIA false-negative rate of 16 per million. A confidential questionnaire, as described, is a valuable adjunct in ascertaining high-risk blood donors.
Woody materials decayed more rapidly in a first order stream than in larger streams in eastern Qu... more Woody materials decayed more rapidly in a first order stream than in larger streams in eastern Quebec, Canada. The rate of annual mass loss (k) was highest (k=1.20) for alder wood chips in a first order stream and lowest (k=0.04) for black spruce wood chips in a ninth order stream. Decay rates for woody materials in a first order stream were inversely related to their initial lignin to nitrogen ratios. In larger streams, decay rates of woody materials were inversely related to their initial lignin concentrations. A number of quantifiable relationships were found to exist between the initial lignin and nitrogen contents of woody materials and the nitrogen dynamics of decaying wood.
... 1986; Rejmánek 1989). Environmen-tal and habitat characteristics such as temperature, mois-tu... more ... 1986; Rejmánek 1989). Environmen-tal and habitat characteristics such as temperature, mois-ture, wind, light, soil type, and plant community type can also play a role in invasions (Lindsay 1953; Swincer 1986). Despite the ...
Journal of the North American Benthological Society, 1988
Abstract. Boundaries separating adjacent resource patches are dynamic components of the aquatic l... more Abstract. Boundaries separating adjacent resource patches are dynamic components of the aquatic landscape. This article addresses some fundamental questions about boundary structure and function in lotic ecosystems. We give examples of longitudinal and lateral boundaries ...
... 2) Methodology: a) Calculating transition probabilities: systematic interviews to establish m... more ... 2) Methodology: a) Calculating transition probabilities: systematic interviews to establish mental process + market indicators transferred to a model ... Integrating the environmental and sustainable development agendas into minerals education. R Van Berkel in Journal of Cleaner ...
Canadian Journal of Fisheries and Aquatic Sciences, 1984
... Quatre cours d'eau d'un bassin versant boreal non perturbe de Vest du Quebec ont fa... more ... Quatre cours d'eau d'un bassin versant boreal non perturbe de Vest du Quebec ont fait l'olsjet d'une etude visant a determiner ia composition, I'allure saisonniere et la masse seche sans cendre (MSSC) des apports aliochtones particulaires. ...
This special issue of Ecology and Society on restoring riverine landscapes draws together nine pr... more This special issue of Ecology and Society on restoring riverine landscapes draws together nine presentations from the Second International Symposium on Riverine Landscapes, convened in August 2004 in Storforsen, Sweden. We summarize three themes related to river restoration: (1) setting priorities, (2) identifying relevant reference conditions, and (3) choosing appropriate techniques. We discuss ways of developing river restoration and provide examples of future needs in sustaining functioning river ecosystems that can support human societies.
A confidential self-administered questionnaire was given to all donors prior to blood donation (n... more A confidential self-administered questionnaire was given to all donors prior to blood donation (n = 95,917). The questionnaire describes acquired immunodeficiency syndrome (AIDS) high-risk groups and requires the donor to designate his blood for either laboratory purposes or for transfusion. Six-hundred and twenty-seven people (0.65%; 78% men) designated their blood for laboratory purposes. In addition to routine enzyme-linked immunoassay (EIA) screening for human immunodeficiency virus (HIV) antibody, all units from the latter group of donors were tested by Western blot (WB) irrespective of the EIA result. An equal number of donor units was selected from those designating their blood for transfusion (age, sex and clinic matched) and these too were tested by WB irrespective of the EIA result. We found that donors designating their blood for laboratory purposes had a 10 times (vs transfusion-designated controls) to 100 times (vs general donor population) greater exposure to HIV. In the laboratory-designated group, an EIA negative donor was WB positive, yielding an estimated EIA false-negative rate of 16 per million. A confidential questionnaire, as described, is a valuable adjunct in ascertaining high-risk blood donors.
Woody materials decayed more rapidly in a first order stream than in larger streams in eastern Qu... more Woody materials decayed more rapidly in a first order stream than in larger streams in eastern Quebec, Canada. The rate of annual mass loss (k) was highest (k=1.20) for alder wood chips in a first order stream and lowest (k=0.04) for black spruce wood chips in a ninth order stream. Decay rates for woody materials in a first order stream were inversely related to their initial lignin to nitrogen ratios. In larger streams, decay rates of woody materials were inversely related to their initial lignin concentrations. A number of quantifiable relationships were found to exist between the initial lignin and nitrogen contents of woody materials and the nitrogen dynamics of decaying wood.
... 1986; Rejmánek 1989). Environmen-tal and habitat characteristics such as temperature, mois-tu... more ... 1986; Rejmánek 1989). Environmen-tal and habitat characteristics such as temperature, mois-ture, wind, light, soil type, and plant community type can also play a role in invasions (Lindsay 1953; Swincer 1986). Despite the ...
Journal of the North American Benthological Society, 1988
Abstract. Boundaries separating adjacent resource patches are dynamic components of the aquatic l... more Abstract. Boundaries separating adjacent resource patches are dynamic components of the aquatic landscape. This article addresses some fundamental questions about boundary structure and function in lotic ecosystems. We give examples of longitudinal and lateral boundaries ...
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Papers by Robert Naiman