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- 28Biological Sciences, Department of/Research Data and Materials (Biological Sciences)
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- 6Biological Sciences, Department of/Other Publications (Biological Sciences)
- 1Biological Sciences, Department of/R.E. Peter Biology Conference
- 27University of Alberta, Department of Biological Sciences
- 18Sally Leys
- 9Pamela Windsor-Reid
- 5April Hill
- 4April L Hill
- 4Leys, Sally P.
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A longitudinal dataset of incidence and intervention policy impacts regarding the COVID-19 pandemic in Canadian provinces
Download2021-01-01
Ammar Hassanzadeh Keshteli, Dana Allen, Afia Anjum, Yashvi Patel, Aadhavya Sivakumaran, Siyang Tian, Fei Wang, Hao Wang, Mark A. Lewis, Russell Greiner, David S. Wishart
One year after identifying the first case of the 2019 coronavirus disease (COVID-19) in Canada, federal and provincial governments are still struggling to manage the pandemic. Provincial governments across Canada have experimented with widely varying policies in order to limit the burden of...
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A multi-scale test of the forage maturation hypothesis in a partially migratory ungulate population
Download2008
McDermid, G., Hebblewhite, M., Merrill, E.
The forage maturation hypothesis (FMH) proposes that ungulate migration is driven by selection for high forage quality. Because quality declines with plant maturation, but intake declines at low biomass, ungulates are predicted to select for intermediate forage biomass to maximize energy intake...
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Aphrocallistes vastus Trinity transcriptome
2014-02-11
Sponges (Porifera) are among the earliest evolving metazoans. Their filter-feeding body plan based on choanocyte chambers organized into a complex aquiferous system is so unique among metazoans that it either reflects an early divergence from other animals prior to the evolution of features such...
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2000
Although natal dispersal has received considerable attention from animal ecologists, the causes and consequences of breeding dispersal have remained largely unexplored. We used telemetry, direct observation, and long-term mark-recapture (9 yr) to study breeding dispersal in the North American red...
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2018
University of Alberta, Department of Biological Sciences
This image illustrates brine shrimp as viewed under a compound microscope with an ocular micometer for measurement. This laboratory equipment is used in Introduction to Cell Biology: Biology 107 and MolecuLar Genetics and Heredity: Biology 207. This image was created as part of the University of...
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2018
University of Alberta, Department of Biological Sciences
This image illustrates brine shrimp as viewed under a compound microscope with an ocular micometer for measurement. This laboratory equipment is used in Introduction to Cell Biology: Biology 107 and MolecuLar Genetics and Heredity: Biology 207. This image was created as part of the University of...
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Cost of filtration DATA for 5 demosponges - Data associated with: Ludeman, Reidenbach and Leys - JEB 2017 The energetic cost of filtration by demosponges and their behavioural response to ambient currents
Cost of filtration DATA for 5 demosponges - Data associated with: Ludeman, Reidenbach and Leys - JEB 2017 The energetic cost of filtration by demosponges and their behavioural response to ambient currents
Download2017-02-14
Abstract: Sponges (Porifera) are abundant in most marine and freshwater ecosystems and as suspension feeders they play a crucial role in filtering the water column. Their active pumping enables them to filter up to 900 times their body volume of water per hour, recycling nutrients and coupling a...
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Data associated with Aragones and Leys - "The sponge pump as a morphological character in the fossil record"
Download2021-08-13
The timing of early animal evolution remains one of the biggest conundrums in biology. Molecular data suggest Porifera diverged from the metazoan lineage some 800 Ma to 650 Ma, which contrasts with the earliest widely accepted fossils of sponges at 535 Ma. However, the lack of criteria by which...
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Data associated with Grant et al (MEPS) "The Effect of Suspended Sediments on the Pumping Rates of Three Species of Glass Sponge In situ "
Data associated with Grant et al (MEPS) "The Effect of Suspended Sediments on the Pumping Rates of Three Species of Glass Sponge In situ "
Download2019-03-25
The largest known glass sponge reefs in Canada are within the Hecate Strait and Queen Charlotte Sound Glass Sponge Reefs Marine Protected Area (HSQCS-MPA). However, human activities outside the core MPA boundaries, such as trawling, can create plumes of suspended sediments capable of travelling...
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Data associated with Grant et al (MER) "Suspended sediment causes feeding current arrests in the glass sponge Aphrocallistes vastus"
Data associated with Grant et al (MER) "Suspended sediment causes feeding current arrests in the glass sponge Aphrocallistes vastus"
Download2018-02-09
Bottom-contact trawling generates large, moving clouds of suspended sediments that can alter the behaviour of organisms adjacent to trawl paths. While increased suspended sediment concentrations (SSCs) are known to cause glass sponges to arrest filtration in lab studies, the response of sponges...