In marginal habitats, populations should reach lower densities, as a consequence of both lower overall abundance and increasing home range size.
In some habitats populations of phoronids reach tens of thousand of individuals per square meter.
In fragmented habitats, populations of higher trophic levels have limited carrying capacity, and thus remain vulnerable to extinction in the long term (Kruess and Tscharntke 1994, 2000).
Because of periodical climate changes and the isolation and reconnection of savanna habitats, populations of baboons changed in size and spatial distribution, perhaps cyclically.
However, the higher mortality rates for workers from native natural habitats populations in the tested abiotic conditions likely translate in a lower foraging efficiency and lower fitness in native human-modified habitats when compared to heat- tolerant populations.
The model included treatment, habitat, population, and all two-way and three-way interactions between these parameters as fixed factors.
We conducted an experiment in a heavily impacted suburban habitat (population density of ~ 2700 humans/km2700
The agency has not seriously addressed habitat, population control, and ecosystem management options to ensure the survival of this culturally and historically significant animal species.
In our case, we have found that instability produced during population growth and expansion in a favorable habitat (population in NE Spain) or decline due to habitat degradation (population in SW Spain) can produce truncations on the scaling of colony size frequency distributions.
We conducted maximum likelihood analyses of variance to test for the effects of the study, habitat, population, and plant life-history traits on the frequencies of the POS-POS and POS-NEG cases.
