نتایج جستجو برای: upland and mangrove areas

تعداد نتایج: 16851613  

Journal: :Remote Sensing 2017
Yuanhui Zhu Kai Liu Lin Liu Soe W. Myint Shugong Wang Hongxing Liu Zhi He

To accurately estimate leaf area index (LAI) in mangrove areas, the selection of appropriate models and predictor variables is critical. However, there is a major challenge in quantifying and mapping LAI using multi-spectral sensors due to the saturation effects of traditional vegetation indices (VIs) for mangrove forests. WorldView-2 (WV2) imagery has proven to be effective to estimate LAI of ...

2007
Karen L. McKee Donald R. Cahoon Ilka C. Feller

Aim The long-term stability of coastal ecosystems such as mangroves and salt marshes depends upon the maintenance of soil elevations within the intertidal habitat as sea level changes. We examined the rates and processes of peat formation by mangroves of the Caribbean Region to better understand biological controls on habitat stability. Location Mangrove-dominated islands on the Caribbean coast...

جواد میرمحمد صادقی, , مهرداد توده روستا, ,

The purpose of this study is to investigate the income distribution among the farmers of two districts of lowland and upland of Savojbolagh township of Tehran Province, Iran. The data of this study were collected by filling out questionnaires through interviews with 350 farmers who were selected by stratified random sampling. For analysis, such techniques as Gini Ratio, comparing the quintiles,...

2017
Lisa Benson Leah Glass Trevor Gareth Jones Cicelin Rakotomahazo

Of the numerous ecosystem services mangroves provide, carbon storage is gaining particular attention for its potential role in climate change mitigation strategies. Madagascar contains 2% of the world’s mangroves, over 20% of which is estimated to have been deforested through charcoal production, timber extraction and agricultural development. This study presents a carbon stock assessment of th...

2010
CHANDRA SALGADO-KENT KEITH McGUINNESS

Crabs belonging to the family Grapsidae are possibly one of the most important components of the fauna of mangrove forests globally, in part because of their influence in nutrient cycling by feeding on litterfall. This study investigated spatial and temporal patterns in relative numbers of 11 grapsid species in northern Australian mangrove forests. The results indicated that Perisesarma spp., N...

2013
Frida Sidik Catherine E. Lovelock

The conversion of mangrove forest to aquaculture ponds has been increasing in recent decades. One of major concerns of this habitat loss is the release of stored 'blue' carbon from mangrove soils to the atmosphere. In this study, we assessed carbon dioxide (CO₂) efflux from soil in intensive shrimp ponds in Bali, Indonesia. We measured CO₂ efflux from the floors and walls of shrimp ponds. Rates...

2007
Jerry C. Ritchie Gregory W. McCarty Erik R. Venteris T. C. Kaspar

Patterns of soil organic carbon (SOC) vary widely across the landscape leading to large uncertainties in the SOC budget especially for agricultural landscapes where water, tillage and wind erosion redistributes soil and SOC across the landscape. It is often assumed that soil erosion results in a loss of SOC from the agricultural ecosystem but recent studies indicate that soil erosion and its su...

Journal: :Asian Journal of Fisheries and Aquatic Research 2022

The study was conducted in the mangrove rehabilitation sites of Malita, Davao Occidental, Philippines particularly Sitio Agdao Brgy. Tubalan, Baybay Buhangin and Lahusan Fishing Village from October to December 2020. Preliminary stations were established: Station 1 Agdao, 2 3 Lahusan. These are considered be a slightly undisturbed forest dominated by species trees.
 free exploration method...

Journal: :Japanese Journal of Human Geography 1966

2016
Mariecia D. Fraser John R.T. Davies Xianmin Chang

Many secondary plant compounds are synthesized in response to stressed growing conditions. We tested the feasibility of exploiting this feature in a novel strategy for the commercial production of the plant alkaloid galanthamine. Experimental lines of Narcissus pseudonarcissus were established under marginal upland permanent pasture at four different sites. Over 80% of bulbs successfully establ...

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