Sentences with phrase «ecological niches»

Some species will be so disadvantaged they will go extinct and ecological niches will develop that offer opportunities for new species to arise.

Virtually all ecological niches have been filled at all times.

True biotope entirely recyclable, this floating Ecopolis tends thus towards the positive eco-accountancy of the building in the oceanic ecosystems by producing and softening itself the oxygen and the electricity, by recycling the CO2 and the waste, by purifying and softening biologically the used waters and by integrating ecological niches, aquaculture fields and biotic corridors on and under its body to meet its own food needs.

Humans have succeeded in large part because they are highly adaptable, and are not limited to small ecological niches subject to minor climatic variations.

The science of ecological niches asks how a niche was changed by the introduction of a new animal, for example.

On one point, extinction of any one line may be forever, but the presumption that ecological niches will never be filled by equally valuable species that adapt later to fill them is wrong.

Spend 10 days sailing Indonesia in one of the most noteworthy ecological niches on the planet: Raja Ampat.

The different ecological niches created by geological forces are key to Costa Rica's incredible biodiversity.

Tegus are a New World group that roughly inhabits similar ecological niches to Old World monitors.

The reason for that is that their genes were shaped in different ecological niches.»

Newer research shows even more subtle genetic adaptations to dietary and other ecological niches which are adaptations to grains on a smaller scale.

The evolutionary history of the diapsid lineage is quite complex; diapsids evolved into many shapes, occupying many different ecological niches since they first came onto the scene in the late Carboniferous Period (roughly 350 million years ago), when they were represented by the earliest diapsid, the tiny lizardlike Petrolacosaurus.

Origins of house mice in ecological niches created by settled hunter - gatherers in the Levant 15000 y ago

Different individuals of arctic charr are - despite being the same species - in the process of developing various attributes that allow them to better utilise different local ecological niches and resources in the lake.

Biodiversity can also be explored by investigating how species» traits evolve in close interaction with the environment, for example by analyzing ecological niches.

Inclusion of paleontological data into the modeling of ecological niches of living species might show that many of them could live under very different conditions than today, that their ecological niche is much bigger as assumed.

«If we take the paleontological data into account, ecological niches may be much broader than assumed so far ``, says Fritz.

The gram - negatives bacteria classified into the genus Pseudomonas comprise a great variety of microorganisms inhabiting diverse ecological niches.

They show that there is a trade - off between ovariole number and egg size, that reductions in ovariole number evolve alongside shifts to specific food sources, and that ovariole number variation among species with different food sources is best explained by adaptation to specific ecological niches.

They fill the ecological niches occupied in other places by rodents and rabbits — some live in the desert, others in the rainforest, some are herbivorous, while others dine mostly on insects.

This is when Earth saw a rapid burst of evolution - life forms diversified and adapted to new ecological niches and began to interact with each other in more complex ways.

Such fine - tuning would be different in different ecological niches.

The researchers uncovered a variety of features in the cichlid genome that enabled the fishes to thrive in new habitats and ecological niches within the Great Lakes of East Africa.

For these migratory whales, geographical barriers do not exist in the vastness of the ocean, instead some rorquals differentiated by inhabiting different ecological niches.

«This is the most striking feature, as it suggests that pliosaurs colonized a much wider range of ecological niches than previously assumed» said Valentin Fischer, lecturer at the Université de Liège (Belgium) and lead author of the study.

Across the large lakes of this region, the hybrid population then diversified in a process known as «adaptive radiation» (evolution of multiple new species adapted to different ecological niches).

Either way, hummingbirds are producing new species at a decelerating pace, probably because they are running out of space or ecological niches to fill.

By looking at variables such as day and night temperatures and seasonal rainfall and vegetation types, for instance, researchers can identify the ecological niches best suited to certain insects.

Although an evolutionary innovation can open up new ecological niches, traits which are essentially beneficial can put species at a disadvantage in the context of rapid environmental changes.

Adaptive radiation is the rapid speciation of one ancestral species to fill many empty ecological niches.

Birds have adapted to so many ecological niches in large part because of the variety of ways feathers lend them a competitive advantage.

That picture has begun to change, however, with the discovery of a number of early mammals that were well adapted to a variety of ecological niches, including eating plants that huge vegetarian dinosaurs also munched on.

This aids in mate recognition, thus maintaining each species» superiority in exploiting slightly different ecological niches.

The finches filled the available ecological niches, taking advantage of the resources in ways that limited the ability of later - arriving birds to similarly establish themselves and diversify, he suggested.

Tan and other researchers in the laboratory of Georgia Tech Professor Lin Jiang tested that hypothesis using P. fluorescens, which rapidly evolves into two general phenotypes differentiated by the ecological niches they adopt in static test tube microcosms.

The fanged frogs are special, McGuire says, because they appear to represent a virtually unexplored adaptive radiation with many species occurring at the same sites but adapted to occupy distinct ecological niches.

«This is possibly one of the best examples of ecological speciation, that is the process by which selection generates new species, in the marine environment because the species evolved by adapting to different ecological niches, rather than by being separated by geographic barriers for a very long time,» says Paolo Momigliano, post-doctoral researcher from the Ecological Genetics Research Unit.

The early wave of colonization began with lots of different - looking fish and over time there was an eventual filling of ecological niches accompanied by a decrease in colonization, Price said.

«It is possible that the mygalomorphs were far more diverse and numerous than they are today, filling ecological niches that are today home to the more advanced araneomorph spiders, our familiar garden types.

Dinosaur body size evolved very rapidly in early forms, likely associated with the invasion of new ecological niches.

Other dinosaur groups failed to do this, got locked in to narrow ecological niches, and ultimately went extinct.

Our finding is broadly consistent with recent estimates for placental mammals -LSB-(100), but see SM12 (101)-RSB- and thus supports the hypothesis that the K - Pg transition was associated with a rapid species radiation caused by a release of ecological niches following the environmental destruction and species extinctions linked to an asteroid impact (2, 4, 5, 102).

The research, publishing on March 24 in the Open Access journal PLOS Biology, identifies 122 new types of RNA bacteriophages in diverse ecological niches, providing an opportunity to define their contributions to ecology, and potentially to fight bacterial infections, particularly those resistant to antibiotics.

What these shifts provide is a wedge that opens up novel ecological niches, new possibilities for the search engine of evolution to explore.

These changes impact animals that are adapted to specific ecological niches, sometimes displacing them or reducing their numbers.

The kangaroo, quoll, wombat, and cuscus are marsupials that inhabit ecological niches in Australia equivalent to those of the deer, rat, marmot, and flying squirrel of North America.

This latest study is one of only a few well - documented examples of what evolutionary biologists call «character displacement,» in which similar species competing with each other evolve differences to take advantage of different ecological niches.

«Knowing which microbes live in various ecological niches in healthy people allows us to better investigate what goes awry in diseases thought to have a microbial link, like Crohn's disease and obesity,» says George Weinstock, associate director of the Genome Institute at Washington University in St Louis and one of the Human Microbiome Project's principal investigators.

Its members have adapted to the demands of a wide range of ecological niches, and many have developed highly specialized feeding habits.

Over generations, the animals changed and adapted themselves to their respective environments, finding their way into as yet unoccupied ecological niches.