نتایج جستجو برای: tropical evergreen forest

تعداد نتایج: 167876  

2015
Israel estrada-Contreras MIguel equIhua gonzalo CastIllo-CaMpos oCtavIo rojas-soto

According to the last report of the Intergovernmental Panel on Climate Change, human activities are the main responsible for global warming due to the increase in the atmospheric concentration of greenhouse gases. This process is already causing changes in the geographical distribution of species as well as alterations in phenology. With this background, it is interesting to study the expected ...

2010
Gregory Gilbert Gregory S. Gilbert Elizabeth Howard Barbara Ayala-Orozco Martha Bonilla-Moheno Justin Cummings Suzanne Langridge Ingrid M. Parker Jae Pasari Daniella Schweizer Sarah Swope

Question: How do the diversity, size structure, and spatial pattern of woody species in a temperate (Mediterranean climate) forest compare to temperate and tropical forests? Location: Mixed evergreen coastal forest in the Santa Cruz Mountains, California, USA. Methods: We mapped, tagged, identified, and measured all woody stems ( 1 cm diameter) in a 6-ha forest plot, following Center for Tropic...

Journal: :Remote Sensing 2016
Kenneth Grogan Dirk Pflugmacher Patrick Hostert Jan Verbesselt Rasmus Fensholt

Tropical environments present a unique challenge for optical time series analysis, primarily owing to fragmented data availability, persistent cloud cover and atmospheric aerosols. Additionally, little is known of whether the performance of time series change detection is affected by diverse forest types found in tropical dry regions. In this paper, we develop a methodology for mapping forest c...

Journal: :Annals of botany 2012
Pei-Li Fu Yan-Juan Jiang Ai-Ying Wang Tim J Brodribb Jiao-Lin Zhang Shi-Dan Zhu Kun-Fang Cao

BACKGROUND AND AIMS The co-occurring of evergreen and deciduous angiosperm trees in Asian tropical dry forests on karst substrates suggests the existence of different water-use strategies among species. In this study it is hypothesized that the co-occurring evergreen and deciduous trees differ in stem hydraulic traits and leaf water relationships, and there will be correlated evolution in droug...

2014
Madelon Lohbeck Edwin Lebrija-Trejos Miguel Martínez-Ramos Jorge A. Meave Lourens Poorter Frans Bongers

Global plant trait studies have revealed fundamental trade-offs in plant resource economics. We evaluated such trait trade-offs during secondary succession in two species-rich tropical ecosystems that contrast in precipitation: dry deciduous and wet evergreen forests of Mexico. Species turnover with succession in dry forest largely relates to increasing water availability and in wet forest to d...

2015
Rodrigo L. L. Orihuela Carlos A. Peres Gabriel Mendes João A. Jarenkow Marcelo Tabarelli Dusan Gomory

We examine the effects of forest fragmentation on the structure and composition of tree assemblages within three seasonal and aseasonal forest types of southern Brazil, including evergreen, Araucaria, and deciduous forests. We sampled three southernmost Atlantic Forest landscapes, including the largest continuous forest protected areas within each forest type. Tree assemblages in each forest ty...

2007
Roy W. McDiarmid Jay M. Savage Paul H. Allen

Ten to twelve thousand years ago, when humans first came from the north to enter the vast tropical evergreen lowland forests of Mexico and Central America, these forests stretched for what must have seemed an eternity, from the Veracruz lowlands 2,600 km southeastward into northern South America and beyond. Even eight to ten millennia later, when the Spanish conquistadores arrived on the shores...

Journal: :Biodiversity Research and Conservation 2018

2016
L. A. Ashton A. Nakamura C. J. Burwell Y. Tang M. Cao T. Whitaker Z. Sun H. Huang R. L. Kitching

South-western China is widely acknowledged as a biodiversity 'hotspot': there are high levels of diversity and endemism, and many environments are under significant anthropogenic threats not least climate warming. Here, we explore diversity and compare response patterns of moth assemblages among three elevational gradients established within different climatic bioregions - tropical rain forest,...

Journal: :Remote Sensing 2016
Grant Connette Patrick Oswald Melissa Songer Peter Leimgruber

We investigated the use of multi-spectral Landsat OLI imagery for delineating mangrove, lowland evergreen, upland evergreen and mixed deciduous forest types in Myanmar’s Tanintharyi Region and estimated the extent of degraded forest for each unique forest type. We mapped a total of 16 natural and human land use classes using both a Random Forest algorithm and a multivariate Gaussian model while...

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