Relative effects of habitat loss and fragmentation on population extinction

Article Abstract:

The effects of fragmentation on wildlife population extinction are often confused because fragmentation occurs alongside habitat loss. A simulation model, which allowed both these processes to be varied independently, revealed that the effects of fragmentation are much less than the effects of habitat loss. The suggestion that habitat spatial arrangement can mitigate the effects of habitat loss on species extinction is not valid. Conservation efforts would be better directed at reducing habitat loss and restoring habitats.

Habitat (Ecology), Habitat modification, Wildlife conservation

---

Distinguishing tracks of marten and fisher at track-plate stations

Article Abstract:

A quantitative approach to index the populations of uncommon mammals such as the fisher, Martes pennanti and American marten, Martes americana, is presented. The method uses a discriminant function developed using 80 tracks for 21 individuals. Discriminant analysis of the tracks revealed 95 test tracks. The result suggests that baited track stations offer an alternative approach over expensive photographic bait stations for distinguishing tracks of fisher and marten.

Research, Usage, Discriminant analysis, Martens, Animal tracks

---

Abundance estimators and truth: accounting for individual heterogeneity in wild house mice

Article Abstract:

Several population estimators are applied and compared in calculating wild house mice heterogeneity, including gender and body size. The Chao modified moment estimator demonstrated no bias, and provided confidence intervals that incorporated actual population size.

Australia, Observations, House mouse

Similar abstracts:

• Abstracts: Rationalization of the effects of mutations on peptide and protein aggregation rates. Mobile protein signals cell fate
• Abstracts: Explosive ejection of matter associated with star formation in the Orion nebula. Discovery of two young brown dwarfs in an eclipsing binary system
• Abstracts: Vegetation effects on the isotope composition of oxygen in atmospheric CO2. Fluxes of CO2 and water between terrestrial vegetation and the atmosphere estimated from isotope measurements
• Abstracts: Hunting the Paybe: one of the rarest animals in Southern Mexico. Grizzlies in the mist: on the northern coast of British Columbia, grizzly bears let us into their lives and help save their own habitat
• Abstracts: Spontaneous emergence of leaders and followers in foraging pairs. Closing the gender gap

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.