Modelling population dynamics of seabirds: Importance of the effects of climate fluctuations on breeding proportions

Article Abstract:

The modeling of a southern fulmar population over a 39-year period in Terre Adelie, Antarctica, using Leslie matrix models to understand from a prospective and retrospective point of view, how vital rates and their variations, affect the cyclic population dynamics is presented. The marked change in population dynamics, through a change of the variations of the proportion of breeders might be explained in the light of a regime shift that probably occurred around 1980s.

United States, Influence, Climatic changes, Climate change, Sea birds, Seabirds

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Does seasonality explain the evolution and maintenance of delayed implantation in the family Mustelidae (Mammalia: Carnivora)?

Article Abstract:

The environmental correlates related to the evolution of delayed implantation and its subsequent maintenance or loss in the family Mustelidae (Mammalia: Carnivora) was examined. It was concluded that understanding the environmental selection pressures responsible for the evolution of life history traits related to density and spacing behavior allows for a more complete picture of the evolution and subsequent loss of delayed implantation.

Canada, Behavior, Environmental aspects, Evolution (Biology), Evolution, Origin, Mustelidae

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Are long penis bones an adaption to high latitude snowy environments?

Article Abstract:

The correlation of baculum length on other reproductive adaptations like delayed implantation and induced ovulation in high latitude environments is studied. The impact of environmental conditions, affecting locomotion on the mating system of females and development of long penis bones in males is examined.

Environmental impact analysis

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