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Start Over Subject tropical forests

1. Foliar δ13C values, photosynthetic pathway and functional type for 238 common species on farm land and disturbed forest in Laos

Creator:
De Rouw, A., Maxwell, J. F., and Girardin, C.
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
fotosyntéza, tropické lesy, tropické dřeviny, photosynthesis, tropical forests, tropical woody plants, Laos, C3 and C4 plants, coppice, tropical weeds, 2, and 581
Language:
Multiple languages
Description:
Despite the elimination of the original forest and frequent cultivation using slash and burn, a large spread in leaf δ13C was recorded in weeds, crops, and bush fallow species, reflecting a forest environment rather than a broken canopy or open environment., A. De Rouw, J .F. Maxwell, C. Girardin., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

2. Photoacclimation capacity in seedling and sapling of Siparuna guianensis (Siparunaeae): response to irradiance gradient in tropical forest

Creator:
Vieira, T. O., Degli-Esposti, M. S. O., Souza, G. M., Rabelo, G. R., Da Cunha, M., and Vitória, A. P.
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
fotosyntéza, chlorofyl, tropické lesy, photosynthesis, chlorophyll, tropical forests, Brazílie, Brasil, chlorophyll fluorescence, CO2 uptake, leaf anatomy, structural traits, growth, Siparuna guianensis, 2, and 581
Language:
Multiple languages
Description:
Light is a limiting factor in plant establishment and growth in the understory of forests. In this paper, we assessed acclimation capacity of Siparuna guianensis, an early secondary successional species. We used seedlings and saplings in three regeneration areas with different irradiance regimes to determine the traits that confer photoplasticity. We examined whether these traits differ at different developmental stages. Anatomical characteristics, photochemical efficiency, photosynthetic capacity, and growth were analyzed. Multivariate component analysis revealed the formation of six clusters: three for seedlings (one for each regeneration area) and three for saplings (following the same pattern of seedlings, considering the area). Increased irradiance favored photosynthetic performance, independently of the developmental stage. The same trend was observed for most data on chlorophyll (Chl) a fluorescence and the ratios of net photosynthetic rate/intercellular CO2 concentration (PN/Ci) and PN/PPFD. No parameter indicated photoinhibition stress. The CO2- and light-response curve data indicated that seedlings were already acclimated to tolerate variation in irradiance. Anatomical adaptations, such as thickness of leaf blade and of adaxial cuticle, were observed in individuals growing in areas with higher irradiation. Thinning of spongy parenchyma and higher investment into a plant height were observed in seedlings, possibly due to the vertical stratification of CO2 and light in the understory; because light is a more limiting resource than CO2 in the lower stratum of the forest. Photoplasticity in S. guianensis is associated with a set of morphological, anatomical, photochemical, and biochemical traits, whereas biochemical performance is best acclimated to variation in irradiance. These traits differed in seedlings and saplings but they were modulated mainly by irradiance in both developmental stages., T. O. Vieira, M. S. O. Degli-Esposti, G. M. Souza, G. R. Rabelo, M. Da Cunha, A. P. Vitória., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Tajemství pestrosti společenstev mravenců v korunách tropických stromů

Creator:
Petr Klimeš and Mottl, Ondřej
Format:
bez média and svazek
Type:
article, text, články, journal articles, model:article, and TEXT
Subject:
Biologické vědy, Akademie věd České republiky., Biologické centrum, biologie, mravencovití, biocenózy, tropické lesy, tropické dřeviny, biodiverzita, biology, ants, biocenoses, tropical forests, tropical woody plants, biodiversity, Nová Guinea (ostrov), New Guinea Island, mravenci, stromová společenstva, Formicidae, 2, and 57/59
Language:
Czech
Description:
Mravenci jsou jednou z nejpočetnějších skupin bezobratlých živočichů žíjících v korunách tropických stromů. Tým vědců z Českých Budějovic objasnil otázky ohledně biodiverzity a ekologických nároků stromových společenstev mravenců za pomoci nejrůznějších metod od vykácení a rozebrání celých kusů pralesa, sestrojení experimentálních pastí až po počítačové simulace. Výzkum pomohl získat klíčové poznatky nejen o tropických lesích pro vědu, ale přispět i k jejich ochraně a vzdělání domorodých obyvatel, kteří v nich žijí., Ants are one of the most abundant groups of invertebrates living in the canopies of tropical trees. In their research a team of scientists from České Budějovice clarified the drivers of high diversity and the ecological preferences of ant arboreal communities using a variety of techniques from felling and dissecting trees in entire forest plots and the construction of special experimental traps to computer simulations. This research helped to advance not only our knowledge about tropical rainforests, but it was also significant for tropical forest conservation and the education of the native people depending on them., and Petr Klimeš, Ondřej Mottl.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4. Tropické lesy ostrova Borneo. 3. Les nejsou jen stromy aneb zajímavé skupiny flóry

Creator:
Martin Dančák, Hroneš, Michal, Kobrlová, Lucie, and Radim Hédl
Format:
print
Type:
article, články, journal articles, model:article, and TEXT
Subject:
Botanika, botanika, tropické lesy, flóra, botany, tropical forests, flora, Borneo (Velké Sundy : ostrov), Borneo Island (Indonesia), 2, and 58
Language:
Czech
Description:
Borneo je ostrovem se zajímavou geomorfologií a překvapivě různorodou geologií. Oba faktory se spolu s historickým vývojem určujícím migrace druhů podílely na současné pestrosti bornejské flóry. Pozoruhodné funkční a taxonomické skupiny rostlin najdeme nejen v zapojeném lese, ale také nad horní hranicí lesa, v pobřežních prostředích, podél vodních toků a jinde. V krátkosti jsou představeny vybrané funční skupiny epifyty, epifyly, liány, masožravé rostliny s význačným rodem láčkovka, nezelené rostliny, rheofyty a alpinské rostliny, mezi kterými nalezneme i trávy temeprátních oblastí. Z pozoruhodných taxonomických skupin představujeme zázvory, áronovité, begonie a pěnišníky, které mají na Borneu jedno z center své diverzity., Borneo is an island with conspicuous geomorphology and variable geology. Both factors have contributed, along with historical development determining species migrations, to the present richness of the flora of Borneo. Remarkable functional and taxonomic groups of herbs occur not only in closed forests, but also above the timber­line, in coastal and riparian habitats, and elsewhere. Selected functional groups are briefly introduced: epiphytes, epiphylles, rheophytes, carnivorous, achlorophyllous and alpine plants. From conspicuous taxonomic groups, we introduce gingers, aroids, begonias and rhododendrons., and Martin Dančák ... [et al.].
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public