Amanda S Kahn
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Phagocytosis of microbial symbionts balances the carbon and nitrogen budget for the deep‐water boreal sponge Geodia barretti
Geodia barretti is a massive nearly spherical sponge that forms dense assemblages on the continental shelf of the North Atlantic and the Norwegian Sea. We studied the metabolism of individual sponges… Expand
Haliclystus californiensis , a “new” species of stauromedusa (Cnidaria: Staurozoa) from the northeast Pacific, with a key to the species of Haliclystus
We describe Haliclystus californiensis, a new species of stauromedusa from the northeast Pacific. Haliclystus californiensis differs from other species within the genus primarily by its… Expand
Benthic grazing and carbon sequestration by deep-water glass sponge reefs
Glass sponges are conspicuous members of the deep-sea fauna, but in the northeastern Pacific they form unusual reefs covering kilometers of seafloor. Individual sponges in fjords can process up to 10… Expand
The role of cell replacement in benthic–pelagic coupling by suspension feeders
Benthic–pelagic coupling through suspension feeders and their detrital pathways is integral to carbon transport in oceans. In food-poor ecosystems however, a novel mechanism of carbon recycling has… Expand
Dynamic change, recruitment and resilience in reef-forming glass sponges
Glass sponge reefs on the continental shelf of western Canada and south-east Alaska are considered stable deep-sea habitats that do not change significantly over time. Research cruises using a… Expand
Temporal changes in deep-sea sponge populations are correlated to changes in surface climate and food supply
Density and average size of two species of abyssal sponges were analyzed at Station M (∼4100 m depth) over an 18-year time-series (1989–2006) using camera sled transects. Both sponge taxa share a… Expand
Oxygen and the Energetic Requirements of the First Multicellular Animals.
The appearance of multicellular animals during the Neoproterozoic Era is thought to have coincided with oxygenation of the oceans; however, we know little about the physiological needs of early… Expand
Bathydorus laniger and Docosaccus maculatus (Lyssacinosida; Hexactinellida): Two new species of glass sponge from the abyssal eastern North Pacific Ocean.
Two new species of glass sponge were discovered from the abyssal plain 200 km west of the coast of California (Station M). The sponges have similar gross morphology--an unusual plate-like form with… Expand
Suspended sediment causes feeding current arrests in situ in the glass sponge Aphrocallistes vastus.
- N. Grant, E. Matveev, Amanda S Kahn, S. Leys
- Medicine, Biology
- Marine environmental research
- 1 June 2018
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… Expand
Trophic ecology of glass sponge reefs in the Strait of Georgia, British Columbia
- Amanda S Kahn, Jackson W F Chu, S. Leys
- Environmental Science, Medicine
- Scientific Reports
- 15 January 2018
Sponges link the microbial loop with benthic communities by feeding on bacteria. Glass sponge reefs on the continental shelf of western Canada have extremely high grazing rates, consuming seven times… Expand