Ecological Correlates of Life Span in Populations of Large Herbivorous Mammals
نویسندگان
چکیده
منابع مشابه
Senescence Is More Important in the Natural Lives of Long- Than Short-Lived Mammals
BACKGROUND Senescence has been widely detected among mammals, but its importance to fitness in wild populations remains controversial. According to evolutionary theories, senescence occurs at an age when selection is relatively weak, which in mammals can be predicted by adult survival rates. However, a recent analysis of senescence rates found more age-dependent mortalities in natural populatio...
متن کاملEcological Interactions in Dinosaur Communities: Influences of Small Offspring and Complex Ontogenetic Life Histories
Because egg-laying meant that even the largest dinosaurs gave birth to very small offspring, they had to pass through multiple ontogenetic life stages to adulthood. Dinosaurs' successors as the dominant terrestrial vertebrate life form, the mammals, give birth to live young, and have much larger offspring and less complex ontogenetic histories. The larger number of juveniles in dinosaur as comp...
متن کاملEcological roles and conservation challenges of social, burrowing, herbivorous mammals in the world’s grasslands
© The Ecological Society of America www.frontiersinecology.org G ecosystems worldwide are fundamentally shaped by an underappreciated but key functional group of social, semi-fossorial (adapted to burrowing and living underground), herbivorous mammals (hereafter, burrowing mammals). Examples include not only the phylogenetically similar species of prairie dogs of North America (Cynomys spp); gr...
متن کاملFossil Mice and Rats Show Isotopic Evidence of Niche Partitioning and Change in Dental Ecomorphology Related to Dietary Shift in Late Miocene of Pakistan
Stable carbon isotope analysis in tooth enamel is a well-established approach to infer C3 and C4 dietary composition in fossil mammals. The bulk of past work has been conducted on large herbivorous mammals. One important finding is that their dietary habits of fossil large mammals track the late Miocene ecological shift from C3 forest and woodland to C4 savannah. However, few studies on carbon ...
متن کاملFloristic Classification of Large-Scale Ecological Groups in the Forests of Central Zagros
Do climatic variations and drought magnitude affect large-scale vegetation composition in the Central Zagrosian forests, and to what extent do topographic variables of altitude and aspect play a role in these potential differences? To answer this question, in this research, the flora list of 15 Central Zagros forests was obtained in five plant life forms between the valleys of two rivers, Gerdb...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2006