Community gradients and boundaries, Biology

Assignment Help:

Community Gradients and Boundaries

It is often difficult or impossible to determine where one community ends and the next begins. Many communities, in fact, grade continuously into each other with no sharp boundaries. For example, if two forests, pine forest and spruce forest are nearby, one cannot see the boundaries between them. But if one moves from one end of the pine forest to the other end of spruce forest, one can observe difference in species composition between the two; yet one cannot demarcate a sharp boundary between these two forest communities.

There are, however, instances where sharp boundaries between the communities are seen, especially where the physical environment changes abruptly - for example, at the transition between aquatic and terrestrial habitats between distinct soil types, or between north-facing and south-facing slopes of a mountain.


Related Discussions:- Community gradients and boundaries

Classification of poisonous arthropods, what is the classification of poiso...

what is the classification of poisonous arthropods according to their mode of toxicity to human

What is ammensalim, What is ammensalim? Ammensalism is the ecological i...

What is ammensalim? Ammensalism is the ecological interaction in which an individual harms another without obtaining advanatage. Ammensalism is an inharmonious (negative) ecolo

Pathophysiology of constrictive pericarditis, Q. Pathophysiology of constri...

Q. Pathophysiology of constrictive pericarditis? Ans. The thickened and rigid pericardium causes constriction of the heart and restricts ventricular dialatation and diasto

Bovine spongiform encephalopathy (bse), Normal 0 false fal...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Deficiency diseases-fatty liver or fat cow syndrome , Fatty liver or fat co...

Fatty liver or fat cow syndrome (hepatic lipidosis, pregnancy toxaemia in cattle) Fatty liver or hepatic lipidosis is a major metabolic disease of dairy cows. It is caused by

Which functional group ionization is stabilized by resonance, In which of t...

In which of the following functional groups ionization is stabilized by resonance? Select one: a. Carboxyl b. Hydroxyl c. Amine d. Aldehyde e. All of the above

Explain clinical dietitians, Explain Clinical dietitians Clinical dieti...

Explain Clinical dietitians Clinical dietitians, sometimes called therapeutic dietitians, are associated with health care institutes, hospitals and nursing homes. Depending on

Define the thin and thick filaments of a sarcomere, When the overlap betwee...

When the overlap between the thin and thick filaments of a sarcomere in a skeletal muscle is decreasing, A. the total length of the I band is increasing in the sarcomere. B.

Phlum mollusca, about phylum mollsca and its classification

about phylum mollsca and its classification

Tunnel subvalvar stenosis, Tunnel Subvalvar Stenosis :  This variety ...

Tunnel Subvalvar Stenosis :  This variety is less common and extends from sub aortic area for a variable length of 10-30 mms (tunnel stenosis). In the severe variety, the tun

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd