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Robert Lenthall Jefferies Scholarship 

Jefferies, Robert L. (2010)
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Nutrient Allocation Strategies to Eggs by Lesser Snow Geese (Chen caerulescens) at a Sub-Arctic Colony 

Hobson, Keith A.; Sharp, Christopher M.; Jefferies, Robert L.; Rockwell, Robert F.; Abraham, Kenneth F. (University of California Press, 2011-01)
The relative allocation of endogenous- and exogenous-derived nutrients to reproductive investment in Arctic-nesting geese is affected by body size, migration distance, and proximate conditions on the wintering, staging, and ...
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Letter to Dr. D.R. Bazely regarding the Jack Dainty Graduate Scholarship Fund 

Jefferies, Robert L.; Harvey, Harold (08/01/2012)
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Curriculum Vitae 

Jefferies, Robert L. (2011-07-27)
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Is the decline of soil microbial biomass in late winter coupled to changes in the physical state of cold soils? 

Jefferies, Robert L.; Walker, Alan; Edwards, Kate A.; Dainty, Jack (Elsevier, 2010)
During winter when the active layer of Arctic and alpine soils is below 0 °C, soil microbes are alive but metabolizing slowly, presumably in contact with unfrozen water. This unfrozen water is at the same negative chemical ...
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The biology of the annual Salicornia europaea agg. at the limits of its range in Hudson Bay. 

Jefferies, Robert L.; Jensen, A.; Bazely, Dawn R. (NRC Research Press, 1983)
The biology of a marginal population of the annual Salicornia europaea agg. has been examined at La Pérouse Bay, Manitoba, on the shores of Hudson Bay. Plants were confined to south-facing sites which became hypersaline ...
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Soluble carbohydrate content of shoots of Arctic wetland plants that are consumed by lesser snow geese 

Jefferies, Robert L.; Edwards, Kate A. (NRC Research Press, 2008)
We recorded seasonal changes in the total amounts of soluble carbohydrates in shoots of salt- and fresh-water coastal plants at La Pérouse Bay, northern Manitoba, to determine whether adult snow geese and their goslings ...
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Goose-induced Changes in Vegetation and Land Cover between 1976 and 1997 in an Arctic Coastal Marsh 

Abraham, Kenneth F.; Jefferies, Robert L.; Rockwell, Robert F. (Institute of Arctic and Alpine Research (INSTAAR), University of Colorado, 2005)
Since the 1970s, a breeding colony of lesser snow geese (Chen caerulescens caerulescens L.) at La Pérouse Bay, Manitoba, has grown 8% annually. This increase has led to significant loss of plant cover in all major salt- ...
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Allochthonous inputs: integrating population changes and food-web dynamics 

Jefferies, Robert L. (Elsevier, 2004)
Most ecosystems are recipients of allochthonous materials that enhance in situ productivity. Recent theoretical and empirical studies suggest that low to moderate inputs can stabilize food webs. However, depending on the ...
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Robert L Jefferies Virtual Issue 

Jefferies, Robert L. (12/11/2012)
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Jefferies, Robert L. (14)
Abraham, Kenneth F. (3)Edwards, Kate A. (3)Rockwell, Robert F. (2)Bazely, Dawn R. (1)Cooke, Fred (1)Dainty, Jack (1)Hargreaves, Sarah K. (1)Harvey, Harold (1)Hobson, Keith A. (1)... View MoreSubjectHudson Bay (4)Hudson Bay coast (2)La Pérouse Bay (2)Robert L. Jefferies (2)agricultural resources (1)Arctic fresh-water marshes (1)Arctic salt-water marshes (1)Arctic Tundra (1)biomass (1)C13 (1)... View MoreDate Issued2010 - 2013 (7)2000 - 2009 (6)1983 - 1989 (1)Has File(s)Yes (14)

All items in the YorkSpace institutional repository are protected by copyright, with all rights reserved except where explicitly noted.

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