Ecosystem Succession and Nutrient Retention Outline: Introduction Identification of definitions Paper goals Body Various Ecosystems Role of nutrients Conclusion Future research offers Possible applications of research results This research article deals with ecsystem successin and nutrient retentin. Ecsystems are pen systems in which bigechemical functins cnsist f inputs frm varius surces, utputs t varius sinks and a variable degree f internal recycling (Peter M. Vitusek and William A. Reiners).
Authrs suggest and struggle t prve that as ecsystems mature their ability t cnserve nutrients increases. The plants, animals, and micrrganisms that make up a bilgical cmmunity in an area are intercnnected by an intricate web f relatinships, a web that als includes the physical envirnment in which the rganisms exist.
Yu will recall that the interdependent bilgical and physical cmpnents make up what bilgists call an ecsystem. The ecsystem cncept emphasizes the functinal relatinships amng rganisms and between rganisms and their physical envirnments. These functinal relatinships are exemplified by the fd chains thrugh which energy flws in an ecsystem, as well as by the pathways alng which the chemical elements essential t life mve thrugh that ecsystem. These pathways are generally circular — the elements pass thrugh the system in cycles. The cycling f sme elements is s slw, hwever, that in the time-span f interest t sciety, mvement appears t be ne-way. An understanding f the flw f energy and the cycling f materials in ecsystems is essential fr perceiving what may be the mst subtle and dangerus threat t human existence.
The Essay on Physical Condition
In a world driven by a society obsessed with wanting to look and stay healthy, people would give anything to look more like the poster-child for Calvin Klein adds. However, not all people seem willing to make the necessary sacrifices to conquer what seems an unattainable task. Everybody wants to look like a model or just simply be happy with his or her physical appearance, but when they learn that ...
Nutrients mbilized and used by ecsystmes in large quantities include calcium, magnesium, and ptassium. All f these are present in seawater in large amunts and in rainwater and surface water in much smaller amunts, and are added t the sil by rck weathering as described abve in the discussin f the sedimentary cycle. In sme circumstances, dust raised by the wind and depsited as dry fallut elsewhere frms an imprtant additinal link in the cycling f these nutrients, and in ther circumstances the mbilizatin rate frm rcks is increased by the rck-splitting actin f deep tree rts in the weathering prcess. The cycling f the macrnutrients nitrgen, phsphrus, sulfur, calcium (Ca), magnesium (Mg) and ptassium (K), in varius kinds f bilgical cmmunities -hardwd frests, jungles, deserts — has been extensively studied since the 1960s, and a large bdy f data is accumulating. The enrmus variety in the nutrient budgets f different cmmunities in different places is indicated graphically , which summarizes sme f these studies. The differences amng cmmunities f the same type (fr example, the temperate hardwd frests) result frm differences in sil, quantity f rainfall, lcal rainwater chemistry, dry fallut characteristics, and detailed species cmpsitin. Nutrients exert an imprtant influence n sil mesfauna and micr-rganisms.
In terms f mesfauna, the principal surce f nutrients is rganic matter ccurring as either living r dead plant r animal material. In the case f herbivrus fauna, the nutrient status f the plant-derived rganic matter will determine ppulatin levels, with higher levels usually present in sils with high nitrgen cntent rganic matter, such as thse assciated with many grassland and bradleaf tree types. Carnivrus mesfauna will ccur in greatest quantities in sils which have large ppulatins f animals n which they prey, and these are therefre usually the same types f sil. Fr sil micr-rganisms, carbn and nitrgen are the nutrients which are mst cmmnly deficient, and varius adaptatins have been develped in rder t vercme this prblem; these include the fixatin f atmspheric nitrgen, the ability t survive lng perids withut nutritin, and the release f antibitics which inhibit the grwth f cmpetitrs. Understanding the ecsystems is imprtant in rder t prvide definite answers fr business peple, planners, administratrs and legislatrs is dependent upn the infrmatin prvided by r available frm natural resurces managers (f resurces such as sil, frests, wildlife, fish, etc.) being integrated crrectly. The cmplexity f eclgical and bilgical prblems in prtected areas has meant new areas f specialisatin demanding a wider spectrum f knwledge than frmerly.
The Term Paper on A Good Manager Will Always Be A Good Leader
In this essay I will demonstrate how a good manager _can_ often be a good leader, but why I also believe that explicit differences in characteristics; attitudes and methods prove them to be unique. I will do this by firstly, defining what I feel a good manager is, and what I feel a good leader is. In doing this, I will compare and contrast the two concepts in order to finally draw conclusive ...
f curse, eclgists and prtected area managers are nt expected t be specialists in all areas and need t be assisted by ther peple wh pssess different knwledge essential fr an integrated apprach t the tasks at hand. It is clear that sme aspects f current planning, ecnmics, landscape architecture and architectural and engineering practice interact with thse f the prtected area manager. Althugh prtected area managers may have scientific tls and theries based n eclgical field bservatins and experimentatin, t bring these analyses int a prblem-slving framewrk fr imprving areas under management, they still have t rely n advice and input frm ther peple. Managers must generally rely heavily n specialists such as archaelgists, anthrplgists, ceangraphers, limnlgists, entmlgists and sil scientists..
