Floristic composition patterns of Mediterranean annual non-nitrophilous grasslands in Eastern Portugal
- Environmental Science
Abstract Helianthemetea guttati communities are pioneer spring and early summer ephemeral grasslands, dominated by non-nitrophilous therophytes. In Continental Portugal, these communities have not…
Do pigmentation and the melanocortin system modulate aggression and sexuality in humans as they do in other animals
- Biology, Psychology
LIFE‐HISTORY AND ECOLOGICAL CORRELATES OF GEOGRAPHIC VARIATION IN EGG AND CLUTCH MASS AMONG PASSERINE SPECIES
- Biology, Environmental ScienceEvolution; international journal of organic evolution
Interspecific variation in avian egg and clutch mass within and among diverse geographic regions is described and hypotheses related to allometry, clutch size, nest predation, adult mortality, and parental care as correlates and possible explanations of variation are explored.
Long-Term Organic–Inorganic Fertilization Regimes Alter Bacterial and Fungal Communities and Rice Yields in Paddy Soil
- MedicineFrontiers in Microbiology
Microorganisms are the most abundant and diverse organisms in soils and have important effects on soil fertility. In this study, effects of the long-term fertilization treatments no fertilizer (CK),…
Shift in soil bacterial communities from K‐ to r‐strategists facilitates adaptation to grassland degradation
- Land Degradation & Development
Numerous studies have investigated bacterial community structure and bacterial responses to human management at various spatial and temporal scales in grassland ecosystems; however, research on soil…
The effect of seasonal flooding and livelihood activities on retention of nitrogen and phosphorus in Cyperus papyrus wetlands, the role of aboveground biomass
- Environmental ScienceHydrobiologia
With growing demand for food production in Africa, protecting wetlands and combining increased agricultural production with conservation of the ecological integrity of wetlands is urgent. The role of…
Quality versus quantity: The balance between egg and clutch size among Australian amphibians is related to life history and environmental conditions
- Biology, Environmental SciencebioRxiv
Findings indicate that numerous factors have likely influenced the evolution of an optimal clutch type in this group, highlighting the importance of incorporating such variables into animal studies on egg and clutch sizes.
Life-history theory in psychology and evolutionary biology: one research programme or two?
- PsychologyPhilosophical Transactions of the Royal Society B
It is argued that L HT-E and LHT-P are different research programmes in the Lakatosian sense, and there is much potential for greater integration in the future, through both theoretical modelling and further empirical research.
Investigating patterns of avian ornamental colouration : intraspecific and interspecific approaches : a thesis presented in partial fulfilment of the requirements for the degree of Masters of Science in Zoology at Massey University, Albany, New Zealand
Rapid and positive responses of plants to lower precipitation predictability
- Environmental Science, BiologyProceedings of the Royal Society B
The results show that lower short-term predictability of precipitation positively affected fitness, rapid transgenerational responses existed and different time scales of predictability may affect organisms differently, which shows that the time scale of Predictability should be considered in evolutionary and ecological theories, and in assessments of the consequences of climate change.
SHOWING 1-10 OF 12 REFERENCES
RELATIVE ABUNDANCE OF SPECIES AND MACARTHUR'S MODEL
- Environmental Science
It is shown that when fish or gastropod species are tested, the goodness-of-fit to the model's predictions is related to the taxonomic affinity of the group being tested, which means that a high degree of organiza- tion is required to maintain the random distribution of abundances.
Evolution in the Tropics
- Environmental Science
Attention is given to the possible evolutionary bases of the most striking biological characteristic of the tropics: the extraordinary floristic and faunistic diversity of tropical ecosystems and the emphasis here is placed on botanical aspects.
STUDIES ON BEETLES OF THE FAMILY PTINIDAE: VIII. THE INTRINSIC RATE OF INCREASE OF SOME PTINID BEETLES
The results of laboratory studies on nine species of warehouse Ptinid beetles at 25° C. and 70%r.h are used to calculate by Leslie's methods, the statistic r measuring the intrinsic rate of increase of each species, which applies to a population which has a stable age distribution.
Life Historical Consequences of Natural Selection
- EconomicsThe American Naturalist
The tremendous variation in the life-history patterns of organisms is best explained as adaptive, and a model of life history processes has been developed on the basis of these considerations, leading to the following predictions.
PHYLETIC SIZE INCREASE, AN IMPORTANT TREND ILLUSTRATED BY FOSSIL INVERTEBRATES
- GeologyEvolution; international journal of organic evolution
In reviewing the history of any group of animals one is impressed by the fact that the largest known representatives are usually geologically younger than their smaller relatives, and individual size commonly averages smaller when a group first appears than at any subsequent stage in its history.
Life tables for natural populations of animals.
- Geography, BiologyThe Quarterly review of biology
In selecting from Deevey’s extensive review, we have tried to emphasize the different types of problems that arise in working with animal populations; our most serious omission is a detailed study of…
The Genetical Theory of Natural Selection
Although it is true that most text-books of genetics open with a chapter on biometry, closer inspection will reveal that this has little connexion with the body of the work, and that more often than not it is merely belated homage to a once fashionable study.
The Population Consequences of Life History Phenomena
- EconomicsThe Quarterly Review of Biology
The part of Cole’s article included here outlines the relationship of Thompson’s work (1931, paper 20 above) to stable population theory. Omitted sections discuss the relationships between the rate…