The krill surplus hypothesis
Web13 Jan 2010 · This "Krill Surplus Hypothesis" postulates that the killing of some two million whales in the Southern Ocean during the early- and mid-20th century resulted in an … Web31 Mar 2024 · We hypothesised that winter sea ice conditions and stronger winds affecting spring/summer productivity reduce krill availability, causing a cascade effect on Chinstrap Penguin foraging behaviour...
The krill surplus hypothesis
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Web11 Apr 2011 · Large-scale changes in krill biomass best explain why populations of Adélie and chinstrap penguins increased as a result of competitive release following the … WebThe fin whales fed mostly on Antarctic krill (Euphausia superba) in the research area. The daily prey consumption by fin ... which are important components of the ecosystem, resulted in a substantial surplus of krill (Krill surplus hypothesis; e.g. Laws, 1977). The catches of humpback, blue and fin whales were banned in 1963, 1964 and 1976,
WebRecent external collaboration on country/territory level. Dive into details by clicking on the dots or Select a country/territory from the list WebThe Importance of Krill Predation in the Southern Ocean Philip N. Trathan and Simeon L. Hill Abstract Antarctic krill is a major prey species for a diverse array of Southern Ocean …
Web22 Oct 2015 · “Prior to current sustainable fishing practices, the harvesting of baleen whales, krill and fish across East Antarctic waters through the 20th century could have reduced competition between Adélie penguins and other predators for … Web19 Apr 2024 · See new Tweets. Conversation
Web25 Mar 2024 · We also note that krill consumption by recovering populations of krill predators provides further evidence in support of the krill surplus hypothesis, and …
WebBased on these estimates, we project a total krill consumption of between 1.4 and 3.7 million tons based on traditional and contemporary literature on per capita krill consumption of whales, respectively. When taken in the context of krill fishery catch data in the study area, we conclude that there is minimal spatiotemporal overlap be- lifeline changes season 9Web6 Jun 2024 · The substantial quantities of krill consumed by krill predators recovering from historical harvesting add further evidence in support of the krill surplus hypothesis (Laws, … lifeline chaplaincy austinWeb10 Jul 2007 · The low δ15N values found in modern Adélie penguins indicate relatively high krill availability, which supports the hypothesis of krill surplus in modern ages due to … lifeline central west nswWeb3 Nov 2024 · The annual krill surplus resulting from whale removal (that is, ... the ‘krill-surplus hypothesis’) 35. Instead, the opposite has happened (that is, the ‘krill paradox’). lifeline change providerWebDr Colin Southwell: BSc (Hons), PhD. Research interests. I have been working with the Australian Antarctic Division since 1994. My primary research interests lie in providing scientific input to sustainable management of populations and ecosystems; the development of cost-effective methods for large-scale monitoring of wildlife populations; … mct oil miglyol 812WebThe aim of the present study was to examine the ecological plausibility of the ‘‘krill surplus’’ hypothesis and the effect of the depletion of rorqual populations on the Southern Ocean food web using an ocean-scale ecosystem model. lifeline charity binsWeb26 Nov 2014 · The ‘krill surplus’ hypothesis continued to be tested with additional stable isotope analyses of penguin and prey tissues in Antarctica. Huang et al. (2013) completed … lifeline charity shop