scholarly journals Altitude and community traits explain rain forest stand dynamics over a 2370‐m altitudinal gradient in Costa Rica

Ecosphere ◽  
2021 ◽  
Vol 12 (12) ◽  
Author(s):  
Alba Lorena Hernández Gordillo ◽  
Sergio Vilchez Mendoza ◽  
Marie Ange Ngo Bieng ◽  
Diego Delgado ◽  
Bryan Finegan
Keyword(s):  
Costa Rica ◽  
Rain Forest ◽  
Altitudinal Gradient ◽  
Forest Stand ◽  
Stand Dynamics

Using k-nn and discriminant analyses to classify rain forest types in a Landsat TM image over northern Costa Rica

2008 ◽  
Vol 112 (5) ◽  
pp. 2485-2494 ◽  
Author(s):  
Sirpa Thessler ◽  
Steven Sesnie ◽  
Zayra S. Ramos Bendaña ◽  
Kalle Ruokolainen ◽  
Erkki Tomppo ◽  
...  
Keyword(s):  
Costa Rica ◽  
Rain Forest ◽  
Landsat Tm ◽  
Forest Types ◽  
Landsat Tm Image ◽  
Tm Image ◽  
Discriminant Analyses

scholarly journals A Multivariate Hybrid Stochastic Differential Equation Model for Whole-Stand Dynamics

Mathematics ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 2230
Author(s):  
Petras Rupšys ◽  
Martynas Narmontas ◽  
Edmundas Petrauskas
Keyword(s):  
Differential Equation ◽  
Stochastic Differential Equation ◽  
Diffusion Processes ◽  
Basal Area ◽  
Equation Model ◽  
Forest Stand ◽  
Growth And Yield ◽  
Stand Dynamics ◽  
Mixed Effect ◽  
Pine Tree

The growth and yield modeling of a forest stand has progressed rapidly, starting from the generalized nonlinear regression models of uneven/even-aged stands, and continuing to stochastic differential equation (SDE) models. We focus on the adaptation of the SDEs for the modeling of forest stand dynamics, and relate the tree and stand size variables to the age dimension (time). Two different types of diffusion processes are incorporated into a hybrid model in which the shortcomings of each variable types can be overcome to some extent. This paper presents the hybrid multivariate SDE regarding stand basal area and volume models in a forest stand. We estimate the fixed- and mixed-effect parameters for the multivariate hybrid stochastic differential equation using a maximum likelihood procedure. The results are illustrated using a dataset of measurements from Mountain pine tree (Pinus mugo Turra).

Influence of typhoon disturbances on the understory light regime and stand dynamics of a subtropical rain forest in northeastern Taiwan

2003 ◽  
Vol 8 (3) ◽  
pp. 139-145 ◽  
Author(s):  
Teng-Chiu Lin ◽  
Steven P. Hamburg ◽  
Yue-Joe Hsia ◽  
Tzer-Ton Lin ◽  
Hen-Biau King ◽  
...  
Keyword(s):  
Rain Forest ◽  
Light Regime ◽  
Stand Dynamics

Bryophyte diversity along an altitudinal gradient in Darién National Park, Panama

1992 ◽  
Vol 5 (1) ◽  
pp. 61-71 ◽  
Author(s):  
S. Rob Gradstein ◽  
Noris Salazar Allen
Keyword(s):  
Species Richness ◽  
Coastal Plain ◽  
Rain Forest ◽  
National Park ◽  
Altitudinal Gradient ◽  
Plant Conservation ◽  
Montane Forest ◽  
Species Assemblages ◽  
Forest Types ◽  
Seasonal Climate

A bryophyte inventory along an altitudinal gradient on Cerro Pirre (1200 m), Darién National Park, Panama, demonstrates that the different rain forest types along the gradient (inundatedlowland, hillside-lowland, submontane, montane elfin forest) have very different species assemblages. The montane forest has the largest number of exclusive species and the largest bryophyte biomass. Species richness is greatest in the submontane forest. The bryophyte flora of Cerro Pirre is not exceedingly rich in species owing to the rather low elevation of the mountain and the seasonal climate in the adjacent coastal plain. Nevertheless, the distinct altitudinal diversification and the occurrence of a considerable number of rare hepatic taxa, demonstrate the importance of Darién National Park as an area of plant conservation. Forty hepatic species are reported as new to Panama.

Prasmodon zlotnicki, a new Neotropical species of the genus Prasmodon Nixon (Braconidae: Microgastrinae) from Costa Rica, with the first host records for the genus

Zootaxa ◽  
2005 ◽  
Vol 1016 (1) ◽  
pp. 29 ◽  
Author(s):  
ALEJANDRO A. VALERIO ◽  
JOSEPHINE J. RODRIGUEZ ◽  
JAMES B. WHITFIELD ◽  
DANIEL H. JANZEN
Keyword(s):  
Costa Rica ◽  
Rain Forest ◽  
Costa Rican ◽  
Leaf Rolling ◽  
Neotropical Species ◽  
Forest Habitats

Prasmodon zlotnicki, a new Costa Rican species of the genus Prasmodon Nixon, is described and illustrated. In addition, the first host records for the genus are included along with an updated key to differentiate Prasmodon zlotnicki from P. eminens Nixon. Prasmodon is now known to attack several species of leaf-rolling and leaf-webbing Crambidae (Lepidoptera) in rain forest habitats.

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