In February and March of 1956 my wife and I concentrated our efforts in the central region between the Rio Jaltepec and Matias Romero, but also made several trips across the isthmus to gather ecological data in the dry season.
An ecological study of the collared lizard (Crotaphytus collaris).
From the above analysis of ecological distribution we may see that the rainforest provides a variety of habitats for amphibians and that these habitats are suitable for amphibian life throughout the year.
In comparing the ecological differences in the amphibian assemblages in the three major habitats, the most obvious difference is the great percentage of arboreal species in the rainforest as compared with savanna and scrub forest.
Etheridge, we again crossed the isthmus several times in order to gather ecological data in the wet season, and studied especially hylid frogs, most of which had not been seen in the dry season.
On the other hand, the savannas and scrub forests are characterized by extreme conditions of desiccation, a factor of considerable importance in limiting the ecological distribution of amphibians.
Now that the important ecological factors of the major environments have been outlined, we may examine the local distribution of amphibians in each of these.
For ages man lived with nature as one aspect of an evolving ecological balance.
Financial cost relates to ecological cost, so spending money on short-lived plastic or easily rusted metal may negate any environmental benefit gained from recycling yard wastes.
Their life processes and ecological interactions can't be easily observed directly in the soil with a microscope.
His experiments with ecologicalfarming are inspiring.
Competition and Human Ecology The ecological conception of society is that of a society created by competitive co-operation.
Galpin's The Social Anatomy of an Agricultural Community is an example of the recognition of ecological factors as basic in the study of social organization.
Competition is the process through which the distributive and ecological organization of society is created.
Compare theecological concept "reaction" with the sociological conception "control.
The economic organization of society, so far as it is an effect of free competition, is an ecological organization.
The ecological analysis of a plant-community leads to the recognition of the growth-forms composing it as its ultimate units.
Control of conditions of community life is not likely to meet with success unless based on an appreciation and understanding of human nature on the one hand, and of the natural or ecological organization of community life on the other.
What do you understand by the statement that anarchism, socialism, and communism are based upon the ecological conceptions of society?
They are based on ecological and economic conceptions of society in which competition is the fundamental fact and, from the point of view of these doctrines, the fundamental evil of society.
Location, position, ecological interdependence--these are the characteristics of the community.
The limited ecological data available suggest that the species inhabits the open mesquite grassland of the Mexican Plateau.
The limited ecological data suggest that the species inhabits the transition zone between the tropical scrub forest and the temperate hardwood forest.
Martin (1958) made a detailed study of the herpetofauna of the Gomez Farias region in southern Tamaulipas; he emphasized the ecological distribution of amphibians and reptiles in that region with special reference to cloud forests.
The ecological relationships that exist between the two species in the Cordillera Volcanica are not known.
Sufficient ecological data to determine differences in habitat between the two species have not been compiled.
Specimens of this lizard have been collected infrequently; the few locality records and limited ecological data indicate that it inhabits dense scrub forest and tropical semi-deciduous forest.
Likewise, in order to gain a knowledge of the ecological distribution and relationships of the components of the fauna, it is necessary to study the animals in their natural environments.
The second part of the study, now in preparation, deals with the ecological and historical geography of the herpetofauna.
The finer materials used by Phainopepla are more readily obtainable in the ecological association inhabited by Phainopepla than would be heavier twigs such as Bombycilla uses.
The coloration of the birds of each subfamily is different because the ecological needs are different.
The large feet and large bill seem to be responses to particular ecological requirements, as will be shown later.
I am more inclined to the opinion that the wax tips are adaptations to present-day ecological conditions for the birds.
Coloration, which varies relatively rapidly in response to differing ecological conditions, has become more different in the species of Bombycillidae than is true in many other families of passerine birds.
The three subfamilies responded to ecological stimuli in three different ways, and the resulting color patterns are unlike in the three groups.
An ecological study of tree cavities and ground burrows in forest stands.
Breeding birds of the Sandia Mountains and their ecological distribution.
The purpose of our study, therefore, was to gain a better understanding of the ecological relationships of the opossum in the particular region represented by the study area.
Ordinarily one tends to keep within a relatively small area that is familiar to it and that satisfies all its ecological requirements.
An ecological study of the garter snake, Thamnophis sirtalis.
It wasn't until years afterward that he realized the ecological peculiarities of this region.
An ecological survey of reptiles in parts of northwestern Texas.
Accompanying these changes in color and size are minor morphological changes and major ecological changes.
An ecological study of reptiles and amphibians of Osage County, Kansas.
Certainly the boundaries of subspecies' ranges should not be accorded undue emphasis in an ecological study.
Some distributional and ecologicalrecords of Kansas reptiles.
Ecological observations on amphibians and reptiles collected in southeastern Oklahoma during the summer of 1934.
An ecological survey of the Fort Leavenworth Military Reservation.
These size differences are almost certainly correlated with behavioral and ecological differences among the snakes involved.
It has not been demonstrated that ecological traits of populations change in a discontinuous manner or correspond in their limits with those of named subspecies.
According to my philosophy, the ecological niche of a species is subject to geographical variation analogous to the variation to be seen in the morphological characters of the animal itself.
An ecological study of the narrow-mouthed toad (Microhyla) in northeastern Kansas.
Ecological studies of the timber wolf in northeastern Minnesota.
An ecological survey of the mammals of the Huron Mountain Area.
The Wisconsin border along the western portion of the Upper Peninsula forms no distinctive ecological boundary.
Blood analyses of wolf pups and their ecological and metabolic interpretation.
An ecological analysis of the interbreeding of Crested Titmice in Texas.
It had turned out, in fact, to be the ecologicalsystem of Earth, and unless all parts of the complex were present, the total was subtly or glaringly wrong.
The ecological system in which human beings belonged had turned out to be infinitely complicated.
In the spacecraft the human is confined in a restricted environment in which it is necessary to establish a balanced microcosm or closed ecological system.
One of the prime considerations of a closed ecological system is that the environmental gases shall remain physiologically tolerable to all of the ecologic components.
Furthermore, a variety of physiological and ecological adaptations might enable the biota to survive the low nighttime temperatures and intracellular ice crystallization.
The possibility of using animals in the closed ecological system is open to question, particularly in the absence of gravity, and much work remains to be done on using plant materials as animal food and on the disposal of wastes.
The photosynthetic closed ecological system was proposed as early as 1951.
Chlorella can be used in a closed ecological system to maintain animals such as mice and a monkey.
Microbiological Studies on Ecological Considerations of the Martian Environment.
This ecological work was done during the summer months while working at the biological station at Winona Lake.
It is usual to regard Ecology as a very recent development of botanical science, but Nehemiah Grew seems to have been alive to the importance of the ecological standpoint,--though he did not describe it by this name.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "ecological" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: commensal; parasitic; symbiotic
