Wednesday, March 31, 2010

abiotic and biotic factors in the tropical rain forest

In ecology, problem of this variety generally flange [at] type diversitas so that measurement of variety [done/conducted] seen the amount of certain type and what overflows relative a[n type in a[n community. Type variety a[n place [do] not only base on the amount of type which there are on the ground but also [at] specialty of types in it, is that endemic types for the habitat of certain area.

why is the tropical rain forest in trouble

Variety involve [is] and varietas of keragaman existing in organism live and that organism place ekosistem [of] life. Variety involve [is] usually evaluated from three different storey;level: keragaman of genetik ( in one type), keragaman of type and keragaman of habitat or ecology ( Wilson 1998; Dkk McNeely. 1990) in Mackinnon dkk ( 2000). easiest Type Keragaman to be measured, goodness in the case of properties of and also type of keunikan or its its[his]. Type Keragaman a[n place [do] not only base on the amount of type found on that place, but also [at] specialty of types in it; is that endemic types for the habitat of certain area or. Amount of life type in annoyed habitat, [is] same possible or bigger than [at] which there are in natural habitat, but its different type composition and some endemic among types him [is] possible changed by ordinary type or widespread type. As a whole this matter push the happening of degradation of keragaman involve.

According to Mackinnon K dkk ( 2000). variety mean situation differ or have various difference in the form of or nature of. Type plant variety represent the part of composition and structure of vegetasi and represent picture concerning composition and structure of vegetasi exist in forest society.

what are the common endangered species of the tropical rain forest

Soerianegara and of Indrawan ( 2002) explaining volume as size measure of dominansi bigger specified pursuant to wide [of] elementary area, high [of] number and tree form bar ( taper). As size measure of dominansi real [of] better volume from [at] other values, because in this volume besaran besides horizontal dominansi ( wide [of] [of] breast high elementary area) also the including vertical dominansi ( coronet dominansi).

tropical rain forest weather

Variety type index.

Bratawinata ( 1998) telling type variety of vegetasi menunjukan mount stability at one particular storey;level growth of storey;level goodness plant, stake, tree and also pillar.

h. Index kemerataan of type.

According to Pielou ( 1966) in Bratawinata ( 1998) index of kemerataan ( [is] e) needed to to determine do individuals of terditribusi morely flatten [at] types which attend at one particular growth storey;level. Make an index to kemerataan of superordinate from a[n storey;level growth of its distribution menunjukan [of] individuals to types to more flatten.

tropical rain forest uses and abuses

Society coefficient or community coefficient.

Effect of reality of adjustment of environment [is] form of a[n [is] same species group or association which occupy community. If have been got [by] data and boldness from some is strightened [of] forest which there are in a[n area [is] later;then [done/conducted] [by] comparison each;every two strightened and for that comparison [is] used [by] community-coefisien / society coefficient ( Erna,2002).

Soerianegara and of Indrawan ( 2002) having a notion that society coefficient or coefficient equality of index or community equality of type of menunjukan mount equality of type composition from 2 ( compared to example [of] dua). As for society coefficient value range from 0-100% becoming to more and more near by 100% two strightened the compared to [is] more and moreing at the same time, more and more near by 0 % more and moreing is different.

tropical rain forest dicovery

Wide [of] breast high elementary area ( Lbd) [is] result of measurement of diameter of vegetasi pillar and tree [at] height 1,3 m of surface of land;ground [is] later;then packed into formula of Lbd ? d² where ? [is] equal to 3,1416 and d [is] tree diameter.

e. Important Index Value ( Importance Value Index) [is] the amount of from closeness relative, elementary area relative and frequency relative, assess maximum from INP [is] 300% ( Curtis and of Mc Intose, 1951; Soerianegara and of Indrawan, 2002).

Arief ( 1994) in Fitriani ( 2006) telling, if there [is] species having highest NP, that show species having the plant society in place. This matter also to determine form of komonitas existing.

tropical rain forest butterflies

Dominansi a[n type to other types in strightened can be expressed pursuant to besaran-besaran following :

1). To the number of closeness and individual ( density).

2). [Gratuity/ %] of closing of coronet ( cover persertage), such [of] closing of coronet that is wide [of] coronet projection [at] forest floor can be used with direct interpretation without appliance, however using skill and membership and also experience in interpretation how much/many [gratuity/ %] of coronet broadness every certain type close land;ground ( Bratawinata,1998).