Reproductive success is one of the most easily-measured and widely studied demographic parameters of
colonial nesting seabirds. Nevertheless, factors affecting the sequential stages (egg laying, incubation, chick-rearing)
of reproductive success are less understood. We investigated the separate sequential stages
of reproductive success in piscivorous black-legged kittiwakes (Rissa tridactyla) and thick-billed...
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diet and oceanography
Heather M. Renner a,n, Brie A. Drummond a, Anna-Marie Benson b, Rosana Paredes c
Reproductive success is one of the most easily-measured and widely studied demographic parameters of
colonial nesting seabirds. Nevertheless, factors affecting the sequential stages (egg laying, incubation, chick-rearing)
of reproductive success are less understood. We investigated the separate sequential stages
of reproductive success in piscivorous black-legged kittiwakes (Rissa tridactyla) and thick-billed...
Reproductive success is one of the most easily-measured and widely studied demographic parameters of
colonial nesting seabirds. Nevertheless, factors affecting the sequential stages (egg laying, incubation, chick-rearing) of reproductive success are less understood. We investigated the separate sequential stages of reproductive success in piscivorous black-legged kittiwakes (Rissa tridactyla) and thick-billed...
As central-place foragers, seabirds from colonies located close to multiple and/or productive marine habitats might experience increased foraging opportunities and enhanced resilience to food shortages. We tested whether this hypothesis might explain divergent trends in 3 populations of black-legged kittiwakes Rissa tridactyla, a surface-feeding piscivore, in the eastern Bering Sea....
Central place foragers, such as breeding seabirds, need to commute between their nests and foraging grounds, thus close proximity of the breeding colony to productive oceanographic features might be beneficial for seabird reproduction. We tested this hypothesis by investigating the at-sea foraging and breeding behavior of thick-billed murres (Uria lomvia)...
We hypothesized that changes in southeastern Bering Sea foraging conditions for black-legged kittiwakes (Rissa tridactyla)
have caused shifts in habitat use with direct implications for population trends. To test this, we compared at-sea
distribution, breeding performance, and nutritional stress of kittiwakes in three years (2008–2010) at two sites in the...
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and Daniel Roby (B63 and B77), HeatherRenner (B77), Alexander Kitaysky (B77), and to Scott Heppell
We hypothesized that changes in southeastern Bering Sea foraging conditions for black-legged kittiwakes (Rissa tridactyla)
have caused shifts in habitat use with direct implications for population trends. To test this, we compared at-sea
distribution, breeding performance, and nutritional stress of kittiwakes in three years (2008–2010) at two sites in the...
We hypothesized that changes in southeastern Bering Sea foraging conditions for black-legged kittiwakes (Rissa tridactyla)
have caused shifts in habitat use with direct implications for population trends. To test this, we compared at-sea
distribution, breeding performance, and nutritional stress of kittiwakes in three years (2008–2010) at two sites in the...
The Aleutian tern (Onychoprion aleuticus) is a species of high conservation concern in Alaska due to large declines at known breeding locations since the 1960s. Due to the small population size and ephemeral behavior of this species on the nesting grounds, there is little basic biological information available and data...
The high quality feedstuffs which are used in poultry feeds
are costly and could be used directly for human food. There is less
competition for fibrous feedstuffs which are less digestible by
humans and other nonruminants.
Feedstuffs containing crude and refined dietary fiber were
examined for their effects on performance,...