Vegetation structure and composition along an interior-edge-exterior gradient in a Costa Rican montane cloud forest

2000 ◽  
Vol 126 (3) ◽  
pp. 291-307 ◽  
Author(s):  
M Oosterhoorn ◽  
M Kappelle
2000 ◽  
Vol 20 (2) ◽  
pp. 162-171 ◽  
Author(s):  
Maarten Kappelle ◽  
Guillaume Avertin ◽  
Marta E. Juárez ◽  
Nelson Zamora

2015 ◽  
pp. 217-224
Author(s):  
H J F Van Dunné ◽  
M Kappelle

Se muestreó briófitas epífitas sobre tallos pequeños de Quercus copeyensis Müll. en un bosque montano nuboso maduro (Talamanca, Costa Rica). Se muestreó a 0.8-1.8 m en cinco tallos (d.a.p. 1.8 -2.8 cm), hallándose 22 especies de musgos y 22 de hepáticas. La biomasa de briófitas ("briomasa") se correlacionó con la frecuencia, contribuyendo los musgos 54-99%. Un 14% de las especies contribuyó casi el 90% de la briomasa, sobresaliendo Pilotrichella flexilis (Hedw.) Ángstr., Rigodium sp. 1, Porotrichodendron superbum (Taylor) Broth., Prionodon densus (Hedw.) Müll. HaI., Neckera chilensis Schimp. ex Mont. y Plagiochila guilleminiana Nees & Mont. Estas especies podrían jugar un papel importante en la regulación del flujo de agua.


2021 ◽  
Vol 30 (1) ◽  
pp. 3004
Author(s):  
Rosa-Amelia Pedraza ◽  
Guadalupe Williams-Linera ◽  
Teresa Nicolás-Silva

Aim of the study: To evaluate how middle-aged active restoration plantations of native tree species contribute to the recovery of the tropical cloud forest in terms of vegetation structure, tree richness, species composition, and to shade-tolerance and seed dispersal mode functional groups.Area of the study: We studied two 19-year-old active restoration sites and their reference mature forests in the tropical montane cloud forest belt, Veracruz, Mexico.Materials and methods: The basal area, density and height as well as the tree species composition and number of species and individuals classified by shade tolerance (pioneer and non-pioneer trees), and seed dispersal mode (anemochorous, barochorous-synzoochorous and endozoochorous) were compared between active restoration plantations and reference forests.Main results: Planted trees and the woody vegetation growing under them represented a high proportion of reference forests’ basal area. Tree richness and Shannon’s equitability index were similar in both reference forests and one active restoration plantation and slightly different in the other. Tree species composition differed among sites; however, each 19-year-old plantation already had several non-pioneer species and a similar species proportion of the seed dispersal syndromes present in their reference forests.Research highlights: Active restoration accelerated the recovery of cloud forest in degraded pasture and bracken fern lands. Planted trees promoted the rapid development of vegetation structure and natural tree regeneration. Although species composition is still different, these middle-aged restoration plantations already have forest species and a proportion of functional groups of species similar to those of their own reference montane cloud forests.Keywords: active restoration; forest recovery; passive restoration; seed dispersal mode; succession; tree species; tropical montane cloud forest.


2005 ◽  
Vol 21 (5) ◽  
pp. 549-557 ◽  
Author(s):  
Matthew Guy Letts ◽  
Mark Mulligan

Photosynthesis was limited by low-intensity photosynthetically active radiation (PAR) and leaf wetness in a lower montane cloud forest (LMCF) of Cauca, Colombia. Mean PAR intensity remained below the saturation level for leaf-scale net photosynthesis (Pn) throughout the solar day during the wet season and for most of the solar day during the dry season. PAR represented a smaller fraction of total solar radiation (K↓) in LMCF than in lowland rain forest (LRF). In LMCF trees and shrubs, mean PAR-saturated Pn ranged from 4.3–10.6 μmol C m−2 s−1 at 1450 m, and from 3.5–10.2 μmol C m−2 s−1 at 2150 m. Pn was reduced by abaxial wetness in leaves of some trees and shrubs, and eliminated in others. This study indicates that persistent cloudiness and interception of cloud water by leaves limit LMCF productivity.


2019 ◽  
Vol 265 ◽  
pp. 359-369 ◽  
Author(s):  
Paulo R.L. Bittencourt ◽  
Fernanda de V. Barros ◽  
Cleiton B. Eller ◽  
Caroline S. Müller ◽  
Rafael S. Oliveira

2021 ◽  
Vol 19 (16) ◽  
Author(s):  
Zainul Mukrim Baharuddin ◽  
Ainna Hanis Zuhairi

Tropical Montane Cloud Forest (TMCF) is one of Earth’s most neglected ecosystems around the globe. More than half of these forests are situated within Southeast Asia. Malaysia is known for its numerous mountains that are exceptionally rich in biodiversity and locally endemic species, but they are also threatened by expanding human activity such as forestry, agriculture, infrastructure, and climate change. The study aims to critically assess the current state of moist TMCF, focusing on their physical and biological potentials as Bio indicators through Bio monitoring at Fraser Hill and Cameron Highland, Pahang, Malaysia. The mix-methods of observation surveys are to identify physical attributes such as light intensity, altitudes, temperature, wind velocity and air humidity. Secondly, laboratory tests are to identify heavy metal contamination absorbed by mosses. Based on the findings collected around the trails, a connection between altitude and microclimate could be found. The study finds that as the altitude increases and the temperature decreases, the vegetation becomes more dwarfed. Secondly, results from the analysis at Abu Suradi trail within Fraser Hill and Brinchang Trail within Cameron Highland have a higher average of aluminium and iron concentration. Mosses were manifested as good key indicators of air pollution with heavy metals to Malaysia highland forest ecosystems. It showed differential accumulation of heavy metals located near sources of pollution. Thus, the moss data confirms the persistence of risk of pollution of highland forest ecosystems in Malaysia, which demands environmental management. Furthermore, decision makers, planners and designers around the region can evaluate and improve their local strategies related to Tropical Montane Cloud Forest (TMCF) conservation and preservation, especially highlands such as Fraser Hill and Cameron Highland.


2006 ◽  
Vol 286 (1-2) ◽  
pp. 123-139 ◽  
Author(s):  
Simoneta Negrete Yankelevich ◽  
Carlos Fragoso ◽  
Adrian C. Newton ◽  
Graham Russell ◽  
O. William Heal

Sign in / Sign up

Export Citation Format

Share Document