Browse Ask a Question
Tools Add
Rss Categories

Structural dynamics of rainforest collembolan Assemblages in leaf litter suspended epiphytes and on the forest floor

Reference Number: AA-02238 Views: 12446 Created: 28-02-2014 10:00 Last Updated: 13-03-2014 13:00 0 Rating/ Voters

Custom Fields
Title:Structural dynamics of rainforest collembolan Assemblages in leaf litter suspended epiphytes and on the forest floor
Author/s:Denis J. Rodgers
University/Institution:Griffith University
Abstract:"This thesis is focussed on the study of the structural relationship between collembolan assemblages occurring in leaf litter on the rainforest floor and assemblages occurring in leaf litter suspended in epiphytic plants in the rainforest canopy. The rationale for the selection of this subject is detailed in the introduction (Chapter) and relies on the necessity for advancement in the scientific understanding of the ecology of rainforest arthropods if we are to conserve biodiversity. An initial hypothesis is examined suggesting that rainforest leaf litter collembolan assemblages might be vertically stratified. This hypothesis is developed from a review of the literature concerning the biology and ecology of the Collembola and consideration of relevant biotic and abiotic characteristics of rainforest environments. Data collected in a pilot study designed to test this hypothesis are analysed using a number of recently developed methods in multivariate statistics. A framework for extending the study of this system is then established through the identification of three questions concerning the generality of these patterns and a further three questions concerning factors generating the patterns observed. The questions are resolved as follows: 1. No significant spatial variation is found to occur in patterns of structural relationship between forest floor and canopy leaf litter collembolan assemblages in the tropics and subtropics. Temporal variation in these patterns is far stronger and winter / summer differences occur between patterns of assemblage relationship on all sites sampled. 2. The consistency of patterns of assemblage relationships among the Collembola with those among other associated arthropod assemblages is assessed using a series of Mantel's tests applied to a number of assemblage data sets drawn from the same set of samples. These analyses show that patterns of relationship between collembolan assemblages are most similar to those among the Oribatida and Mesostigmata, and least similar to those among the Coleoptera and Isopoda. A further set of analyses shows that when these data sets are sequentially pooled, the correlation increases between patterns within any single data set and any pooled data set. This suggests that ecological patterns of relationship within a data set for any arthropod Order are more informative of ecological patterns among the Arthropoda in general. than they are of ecological pattern among any other single arthropod Order. This is regarded as a highly significant result (in scientific rather than statistical terms) and an important area for further research. In answer to the question originally posed, these results indicate that patterns of relationship among leaf litter collembolan assemblages are more highly correlated to patterns of relationship within the arthropod assemblage as a whole, than they are to patterns among assemblages of any other single arthropod Order. 3. The collembolan assemblage associated with leaf litter is shown to be composed of a set of species distinct from those found in soils, on tree trunk surfaces and in the canopy in general. This result suggests that the results of all other analyses can only be interpreted as having relevance to the leaf litter microhabitat and not the rainforest in general. 4. Field observations of movements of collembolan species covering a wide range of body forms and sizes suggest that habitat selection, rather than dispersal capability, governs the species composition of forest floor and suspended litter collembolan assemblages. 5. A senes of experimental studies show that following heavy falls of rain, leaf litter in all vertical strata of the forest is uniformly saturated. However, as the leaf litter dries during fine weather, a pattern of vertical stratification in the distribution of leaf litter moisture develops. After five days of fine weather, leaf litter in the upper canopy is shown to be significantly drier than that in the lower canopy, and that in the lower canopy is in turn shown to be significantly drier than that on the forest floor. The size of suspended litter deposits is also shown to play a significant role in determining drying rates with smaller deposits drying out more quickly than large deposits. 6. The species of host tree in which epiphyte associated litter deposits are suspended has no significant effect on the species composition of collembolan assemblages in the suspended litter. A final component of the field studies associated with this project is the establishment of an experimental system to facilitate further studies of this system. The results all of these studies are drawn together in the development of a model of the structural dynamics of these assemblages. The model consists of four components. The first of these and the core of the model, are four phases in which the state of relationship between the assemblages may occur. The second category of components are the process links by which transition from one state to another occurs (principally vertical migration of collembolan species). Third are the input stimuli (different rainfall levels) which initiate the process components and drive the system as a whole. The fourth component is the sensitivity of the model to a site-specific degree of canopy closure. In conclusion, the model represents the extent to which an understanding of the ecology of this system has been achieved. The model does require some refinement but the experimental system established provides the means for resolving these finer details of the functioning of this system. "
Rss Comments 9
  • #
    [Silas]: Structural dynamics of rainforest collembolan Assemblages in leaf litter suspended epiphytes and on the forest floor | Forestry Reposit-ry 21-05-2019 11:17

    jeu video sexe jeux sexy video jeux de sex a faire chez soi meilleur jeux video porno jeu de sex android jeu sex couple jeux
    de sex ado jeu de sex a telecharger jeux de sex dragon ball z jeux de drague
    porno jeux de sex famille jeux de sexy jeu de mot avec sex meilleur jeux
    video porno jeu de sex pour adultes jeux de sex zebest3000 jeux de sex overwatch jeux
    fairy tail porno jeux d sexe jeux adulte sexe jeu porn naruto jeu de sex hardcore jeux de sex fury jeux porno reunion de famille
    jeux sex app store jeux 3d sexe gratuit jeux sexe viol jeu
    porno sans inscription naruto porno jeux jeu sexe entre amis jeu de sex* jeux
    porno hd jeux de sex meet and fuck jeux sex en ligne jeux de sex histoire
    jeux de sex laboratoire scene de sex jeux video jeux de sex
    onlin jeu porno mobile jeux sexe gratuit en francais jeux de sexe absoluporn jeux sexy
    pour adultes jeu asiatique porno jeux porn 3d jeux de sex
    gamecor jeux sexy 3d gratuit jeux de sex virtual jeux de aventure sex jeux porno
    hd jeux gratuit de sex dragon ball z jeu
    de sex simpson

    jeux tv japon sexe jeux de sex furry jeux sur
    le sexe jeu porno
    reel jeux de sex avec des carte porno jeu de la bouteille jeux pokemon sex jeu sexy japonais jeu gratuit
    sexe sex
    jeux pc meilleur jeux porno jeux de fille porno jeux sex chef de la securite gamecore jeux porno jeux porno pour mobile jeux de la biscotte
    sex jeux sexe viol jeux sexe smartphone jeux
    de sex en ligne reunion de famille jeux sex jeux sexy
    online jeux de sex de garcon et fille jeu de sex sur steam jeu gratuit
    porno jeux de mario sex jeux d amour et de sexe

  • #
    [BrianVem]: Ремонт бытовой техники 22-11-2018 01:27

    Наши мастера отремонтируют любую крупную бытовую технику любой марки и модели, а также спроектируют и сделают [b]Монтаж отопления[/b] под Ваши нужды.
    [url=]Ремонт стиральных машин[/url]
    [url=]Ремонт стиральных машин в Липецкой области[/url]
    [url=]Ремонт посудомоечных машин[/url]
    [url=]Ремонт варочных панелей[/url]
    [url=]Ремонт духовых шкафов[/url]
    [url=]Ремонт газовых котлов[/url]
    [url=]Ремонт водонагревателей[/url]
    [url=]Ремонт водонагревателей ТЕРМЕКС (THERMEX)[/url]
    [url=]Ремонт кофемашин[/url]
    [url=]Ремонт холодильников[/url]
    [url=]Ремонт телевизоров[/url]
    [url=]Запчасти для холодильников[/url]
    [url=]Монтаж систем отопления[/url]
    [url=]Монтаж водяного теплого пола[/url]
    [url=]Установка газового котла[/url]
    [url=]Монтаж отопления в частном доме[/url]
    [url=] Монтаж радиаторов отопления[/url]
    [url=]Установка теплого пола[/url]
    [url=]Основы отопления[/url]

  • #
    [Jaxon]: Structural dynamics of rainforest collembolan Assemblages in leaf litter suspended epiphytes and on the forest floor | Forestry Reposit-ry 08-08-2018 15:00

    If you fully grasp the fundamental mechanisms of an erection, you might be better equipped to handle the situation if it return. bydureon dosages (https://24h-*censored*

  • #
    [Steven]: Structural dynamics of rainforest collembolan Assemblages in leaf litter suspended epiphytes and on the forest floor | Forestry Reposit-ry 03-07-2018 01:15

    best astrologer in salt lake tamil astrology star
    names name of my soulmate astrology free astrology for my date of birth nasa astronomical database
    katy perry vedic astrology stardome astrology astrology secondary progressions astrology solar eclipse effects pisces astrology zone july 2017 todays astrology gemini free astrology for job by date of birth love
    astrology of scorpio monthly april 20 1984 astrology zodiac astrology horoscope taurus tarot playing cards astrology astrological calender
    free live astrology consultation astrology 7th house scorpio virgo astrology zone july 2017 free astrology horoscope weekly cafe astrology gemini daily horoscope 2nd house astrology pisces nepali astrology
    predictions what is my astrological rising sign famous astrologers in kerala types of astrology
    in the world july 16 astrological sign merriman astrology cycles astrology circle brighton neptune in 7th house vedic astrology july 16 astrological sign astrology signs
    according to birthday capricorn moon vedic astrology astrology guru mayan astrology reading astrology religion what is
    a grand square in astrology cancer astrology colors
    famous tamil astrologer in bangalore astrology apprenticeship
    venus and jupiter conjunction astrology the houses in mundane astrology astrology history sagittarius astrology traits marriage astrology by date of birth and name is astrology based
    on geocentric theory chinese astrology predictions cell salts astrology sify astrology cricket moles in body by astrology

  • #
    [uverner]: авто из сша отзывы 21-05-2018 03:51
    Авто аукционы,авто аукционы- огромный выбор,evercar,авто аукцион
    Последние новости сайта, Доставка авто и мотоциклов из США, под заказ авто,
    быстрый выкуп на аукционах, таможенное оформление авто, сертификация авто, постановка машин мотоциклов на учет в ГАИ
    Калькулятор растаможки авто в Украине, доставка авто из США, Как заказать авто из США,
    перевозка автомобиля из США, в контейнере, Америка, купить, продам, доставка авто морская, авто на судне

    [url=]evercar купить авто в сша самостоятельно[/url]

    [url=]авто из сша отзывы[/url]


    [url=]Аукционы Америки[/url]

    [url=]авто аукционы европы[/url]

    [url=]Низкие цены на аварийные[/url]

    [url=]БУ Авто в наличии, доставка под заказ[/url]

    [url=]Автомобили из США в Украине evercar[/url]

    [url=]авто из сша в украину форум[/url]

    [url=]автомобили из америки[/url]

    [url=]evercar покупка авто на европейских аукционах[/url]

    [url=]купить авто аукцион[/url]
    [url=]авто аукционаукцион автомобилей[/url]

    [url=]авто из сша в украину форум[/url]

    [url=]Низкие цены на аварийные[/url]

    [url=]купить автомобили[/url]

    [url=]Купить БУ автомобиль на аукционах Америки[/url]

    [url=]автомобили из америки[/url]

    [url=]Аукционы Америки[/url]

  • #
    [wxcvxeoexign]: vegas *censored* games mdl 30-04-2018 00:37

    [url=https://online*censored*]online *censored* games[/url]
    <a href=" https://online*censored* ">free *censored* slots no download no registration</a>
    [url=https://online*censored*]facebook goldfish *censored* games[/url]
    <a href=" https://online*censored* ">free *censored* poker games</a>
    [url=https://online*censored*]play totally free *censored* games[/url]
    <a href=" https://online*censored* ">online *censored* slots no download</a>

  • #
    [Cathryn]: Structural dynamics of rainforest collembolan Assemblages in leaf litter suspended epiphytes and on the forest floor | Forestry Reposit-ry 17-04-2018 03:52

    Waverton Investment Management Ltd reduced to the holdings in i -
    Shares Russell 1000 Growth by 75. Wells fargo advisors log in wells fargo log
    in wells fargo login in The Washington-based think tank
    researches public policy "by way of a gendered lens," based on its website Hayes, who studies parental
    leave, said Wells Fargo's rollout was unusual: Most private
    companies that implement such changes get them to effective immediately.
    The OCC said Wells Fargo's already-required applications for such activities will no longer receive "expedited treatment. Wells fargo bank online login [url=""]wells fargo mortgage sign in[/url] wells fargo advisors
    login Several homeowners filed suit against Wells Fargo in 2012 in a very Northern California federal court.

  • #
    [Kevinglync]: АЛКОБАРЬЕР – СКАЖИ «НЕТ» АЛКОЗАВИСИМОСТИ! 13-12-2017 11:52

    [url=]АлкоБарьер[/url] – эффективное средство борьбы с алкоголизмом

    Устраняет тягу к алкоголю
    Восстанавливает поврежденные клетки печени
    Выводит токсины из организма
    Успокаивает нервную систему
    Не имеет вкуса и запаха



  • #
    [Zlobhib]: Prepare to hit the big time 01-12-2017 09:20

    If you’re interested in winning millions, then I’m here to help!
    At []*censored*[/url] you can play over 450 world-class games and I’m giving you an exclusive Welcome Bonus to get you stuck into winning.
    Use it today to increase your chances of hitting our jackpots.
    All you have to do is []sign up today[/url] and watch the rewards come rolling in.
    []Prepare to hit the big time[/url]
    []Hacer giros para ganar millones[/url]
    []Holen Sie sich spinnen, um Millionen zu gewinnen[/url]

Info Add Comment
Nickname: Your Email: Subject: Comment:
Enter the code below:
Info Ask a Question