Export 4 results:
Sort by: Author [ Title  (Asc)] Type Year
[A] B C D E F G H I J K L M N O P Q R S T U V W X Y Z   [Show ALL]
Dayton, PK, Robilliard GA, Devries AL.  1969.  Anchor ice formation in McMurdo Sound, Antarctica, and its biological effects. Science. 163:273-274.   10.1126/science.163.3864.273   AbstractWebsite

Aggregations of ice platelets accumulate below the annual sea ice (subice platelet layer) and on the bottom (anchor ice) to depths of 33 metres. Observations of ice platelets adhering to submerged lines support the conclusions that 33 metres is teh lower limit for ice formation in the water column in this area. The rising anchor ice lifts epibenthic fauna and has a pronounced effect on the distribution of the epibenthic organisms.

Dayton, PK, Oliver JS.  1977.  Antarctic soft-bottom benthos in oligotrophic and eutrophic environments. Science. 197:55-58.   10.1126/science.197.4298.55   AbstractWebsite

The benthos of the east and west sides of McMurdo Sound, Antarctica, is characterized by dramatically different infaunal assemblages. The eutrophic East Sound has higher infaunal densities than almost any other benthic assemblage in the world. In contrast, the oligotrophic West Sound, bathed by currents from beneath the Ross Ice Shelf, has patterns of mobile epifauna and low infauna density similar to bathyl deep-sea communities.

Dayton, PK.  1982.  Antarctica, coastal ecology. The Encyclopedia of Beaches and Coastal Environments. ( Schwartz ML, Ed.).:4-43.: Hutchinson Ross Publishing Company Abstract
Kinlan, BP, Graham MH, Sala E, Dayton PK.  2003.  Arrested development of giant kelp (Macrocystis pyrifera, Phaeophyceae) embryonic sporophytes: A mechanism for delayed recruitment in perennial kelps? Journal of Phycology. 39:47-57.   10.1046/j.1529-8817.2003.02087.x   AbstractWebsite

Delayed recruitment of microscopic stages in response to cyclical cues is critical to the population dynamics of many annual and seasonally reproducing perennial seaweeds. Microscopic stages may play a similar role in continuously reproducing perennials in which adult sporophytes are subject to episodic mortality, if they can respond directly to the unpredictable onset and relaxation of unfavorable conditions. We experimentally evaluated the potential for temporary reduction in limiting resources (light, nutrients) to directly delay recruitment of giant kelp (Macrocystis pyrifera (L.) C.A. Agardh) gametophytes and embryonic sporophytes. Laboratory cultures were subjected to limiting conditions of light and nutrients for 1 month and then exposed to nonlimiting conditions for 10 days. Gametophytes in all treatments failed to recruit to sporophytes after 2 weeks, suggesting they are not a source of delayed recruitment in giant kelp. Sporophytes in light-limited treatments, however, survived and grew significantly slower than non-light-limited controls. When stimulated with light, light-limited sporophytes grew from 2 to>10 times faster than unstimulated controls depending on nutrient availability. These results suggest that limiting resources can delay recruitment of embryonic giant kelp sporophytes for at least 1 month. Flexible timing of recruitment from embryonic sporophytes may enhance persistence of continuously reproducing perennial species when mac- roscopic adults are subject to episodic large-scale removals.