Soil altitudinal sequence on base-poor parent material in a montane cloud forest in Sierra Juárez, Southern Mexico

Geoderma ◽  
2008 ◽  
Vol 144 (3-4) ◽  
pp. 593-612 ◽  
Author(s):  
G. Álvarez Arteaga ◽  
N.E. García Calderón ◽  
P.V. Krasilnikov ◽  
S.N. Sedov ◽  
V.O. Targulian ◽  
...  
Keyword(s):  
Cloud Forest ◽  
Parent Material ◽  
Southern Mexico ◽  
Montane Cloud Forest

scholarly journals Host affinity and vertical distribution of epiphytic orchids in a montane cloud forest in southern Mexico

2018 ◽  
Vol 96 (2) ◽  
pp. 200 ◽  
Author(s):  
Ezequiel Hernández-Pérez ◽  
Eloy Solano ◽  
Ramiro Ríos-Gómez
Keyword(s):  
Vertical Distribution ◽  
Tree Species ◽  
Cloud Forest ◽  
Distribution Patterns ◽  
Southern Mexico ◽  
Epiphytic Orchids ◽  
Host Trees ◽  
Montane Cloud Forest ◽  
Vertical Zone ◽  
Bark Texture

<p class="Standard1"><strong>Background</strong>: The host´s structural characteristics provide diverse microhabitats that influence the distribution patterns of the epiphytes at different vertical zones and among tree species.</p><p class="Standard1"><strong>Hypotheses</strong>: Epiphytic orchids have preference for larger host trees and with non-exfoliating rough bark, while the limiting hosts will be those of smaller size and smooth and exfoliating bark, and there will be fewer individuals in the upper canopy of the host trees because the micro-environmental conditions are more stressful compared to the middle and lower parts of the host trees.</p><p class="Standard1"><strong>Methods</strong>: The host preferences and vertical distribution<strong> </strong>of the epiphytic orchids were analyzed in 20 montane cloud forest fragments. In each fragment, two transects of 2 × 50 m were drawn, and the trees with a diameter at a breast height ≥ 20 cm were recorded. In each tree, basal area was quantified and bark texture was characterized. In each tree and vertical zone, the orchid species present were identified and quantified.</p><p><strong>Results</strong>: Orchid distribution patterns vary between vertical zones and host tree species, and the richness is related to host size and bark texture. The highest species richness and number of epiphytic orchid’s individuals were recorded in host trees with fissured bark and larger size. The distribution of orchids in the host was not homogeneous nor was it related to any particular host species. However, five trees species were considered as host preferred, while five tree species were limiting hosts. The highest richness was recorded in vertical zone II and the lowest in zones I and V.</p><p class="Standard1"><strong>Conclusions</strong>: Larger trees contain greater richness of epiphytic orchids, because they offer better conditions for their establishment, provide a great diversity of microhabitats, greater time and area for epiphytic colonization events. The texture of the bark is a relevant factor in the host preference, and in the hosts with smooth bark, the presence of epiphytic orchids depends on the accumulation of organic matter.</p>

scholarly journals Phylogenetic and morphologic evidence confirm the presence of a new montane cloud forest associated bird species in Mexico, the Mountain Elaenia (Elaenia frantzii; Aves: Passeriformes: Tyrannidae)

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1598 ◽  
Author(s):  
Zachary R. Hanna ◽  
Marco F. Ortiz-Ramírez ◽  
César A. Ríos-Muñoz ◽  
Héctor Cayetano-Rosas ◽  
Rauri C. K. Bowie ◽  
...  
Keyword(s):  
Cloud Forest ◽  
Bird Species ◽  
Environmental Parameters ◽  
Geographic Range ◽  
Genetic Evidence ◽  
Southern Mexico ◽  
Montane Cloud Forest ◽  
Distributional Range ◽  
Breeding Condition

Here we provide evidence to support an extension of the recognized distributional range of the Mountain Elaenia (Elaenia frantzii) to include southern Mexico. We collected two specimens in breeding condition in northwestern Sierra Norte de Chiapas, Mexico. Morphologic and genetic evidence support their identity asElaenia frantzii. We compared environmental parameters of records across the entire geographic range of the species to those at the northern Chiapas survey site and found no climatic differences among localities.

scholarly journals Phylogenetic and morphologic evidence confirm the presence of a new montane cloud forest associated bird species in Mexico, the Mountain Elaenia (Elaenia frantzii; Aves: Passeriformes: Tyrannidae)

2015 ◽  
Author(s):  
Zachary R Hanna ◽  
Marco F Ortiz-Ramírez ◽  
César A. Ríos-Muñoz ◽  
Héctor Cayetano-Rosas ◽  
Rauri C. K. Bowie ◽  
...  
Keyword(s):  
Cloud Forest ◽  
Bird Species ◽  
Environmental Parameters ◽  
Geographic Range ◽  
Genetic Evidence ◽  
Southern Mexico ◽  
Montane Cloud Forest ◽  
Distributional Range ◽  
Breeding Condition

We here provide evidence to support an extension of the recognized distributional range of the Mountain Elaenia (Elaenia frantzii) to include southern Mexico. We collected two specimens in breeding condition in northwestern Sierra Norte de Chiapas, Mexico. Morphologic and genetic evidence support their identity as Elaenia frantzii. We compared environmental parameters of records across the entire geographic range of the species to those at the northern Chiapas survey site and found no climatic differences among localities.

scholarly journals Phylogenetic and morphologic evidence confirm the presence of a new montane cloud forest associated bird species in Mexico, the Mountain Elaenia (Elaenia frantzii; Aves: Passeriformes: Tyrannidae)

2015 ◽  
Author(s):  
Zachary R Hanna ◽  
Marco F Ortiz-Ramírez ◽  
César A. Ríos-Muñoz ◽  
Héctor Cayetano-Rosas ◽  
Rauri C. K. Bowie ◽  
...  
Keyword(s):  
Cloud Forest ◽  
Bird Species ◽  
Environmental Parameters ◽  
Geographic Range ◽  
Genetic Evidence ◽  
Southern Mexico ◽  
Montane Cloud Forest ◽  
Distributional Range ◽  
Breeding Condition

We here provide evidence to support an extension of the recognized distributional range of the Mountain Elaenia (Elaenia frantzii) to include southern Mexico. We collected two specimens in breeding condition in northwestern Sierra Norte de Chiapas, Mexico. Morphologic and genetic evidence support their identity as Elaenia frantzii. We compared environmental parameters of records across the entire geographic range of the species to those at the northern Chiapas survey site and found no climatic differences among localities.

The impact of light quality and leaf wetness on photosynthesis in north-west Andean tropical montane cloud forest

2005 ◽  
Vol 21 (5) ◽  
pp. 549-557 ◽  
Author(s):  
Matthew Guy Letts ◽  
Mark Mulligan
Keyword(s):  
Cloud Forest ◽  
Net Photosynthesis ◽  
Leaf Wetness ◽  
Total Solar Radiation ◽  
Wet Season ◽  
Lowland Rain Forest ◽  
North West ◽  
Montane Cloud Forest ◽  
The Impact ◽  
Trees And Shrubs

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.

The fog regime in a tropical montane cloud forest in Brazil and its effects on water, light and microclimate

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
Keyword(s):  
Cloud Forest ◽  
Tropical Montane Cloud Forest ◽  
Montane Cloud Forest

scholarly journals MOSS AS BIOINDICATORS FOR POLLUTION AT FRASER HILL AND CAMERON HIGHLAND PAHANG MALAYSIA

2021 ◽  
Vol 19 (16) ◽  
Author(s):  
Zainul Mukrim Baharuddin ◽  
Ainna Hanis Zuhairi
Keyword(s):  
Heavy Metals ◽  
Forest Ecosystems ◽  
Heavy Metal Contamination ◽  
Cloud Forest ◽  
Iron Concentration ◽  
Tropical Montane Cloud Forest ◽  
Sources Of Pollution ◽  
Montane Cloud Forest ◽  
Physical Attributes ◽  
Key Indicators

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.

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