Introduction

Given the finite amount of chemical compounds in the biosphere, it is inevitable that the same material will be utilized repeatedly by different organisms. This phenomenon is addressed as 'recycling' or simply 'cycling' of energy and matter. Familiar examples of recycling of nutrients involve the so-called 'detritus chain', which decomposes organic matter that is unusable for some organism to its basic compounds that can be recycled into the grazing chain.

This article provides an overview of cycles and cycling indices in ecosystems ecology. Depending on the way of modeling ecosystems, cycles assume different meanings. In what follows, a general definition of cycles, taken from graph theory will be introduced. Then the concept of cycling is applied to (1) food webs (description of who eats whom in the ecosystem) and (2) ecological networks (weighted, mass-balanced versions of food webs). Simple ways of computing cycling indices and removing cycles will be provided.

Was this article helpful?

0 0
Trash To Cash

Trash To Cash

This book will surely change your life due to the fact that after reading this book and following through with the steps that are laid out for you in a clear and concise form you will be earning as much as several thousand extra dollars a month,  as you can see by the cover of the book we will be discussing how you can make cash for what is considered trash by many people, these are items that have value to many people that can be sold and help people who need these items most.

Get My Free Ebook


Post a comment