نتایج جستجو برای: mangrove whipray

تعداد نتایج: 7943  

2015
Anna R. Armitage Wesley E. Highfield Samuel D. Brody Patrick Louchouarn

Landscape-level shifts in plant species distribution and abundance can fundamentally change the ecology of an ecosystem. Such shifts are occurring within mangrove-marsh ecotones, where over the last few decades, relatively mild winters have led to mangrove expansion into areas previously occupied by salt marsh plants. On the Texas (USA) coast of the western Gulf of Mexico, most cases of mangrov...

Journal: :Ecology 2012
Yihui Zhang Guanmin Huang Wenqing Wang Luzhen Chen Guanghui Lin

Cordgrass (Spartina alterniflora) was introduced to China in 1979 from the United States for reducing coastal erosion. It grows vigorously in China and has spread over much of the Chinese coast, from Leizhou Peninsula to Liaoning, a range of more than 19 degrees of latitude. On the southern coast of China, S. alterniflora has invaded mangrove-dominated habitats during the last two decades, but ...

The aim of this research is exploring the impact of changes in runoff and sediment of the upstream catchment on the changes in the area and amount of canopy in Gabric-Jask mangrove. Hence, hydro-climatological parameters including amount of precipitation, discharge, and sediment in Gabric catchment during the statistical period of 1993 to 2010 were selected and the annual standardized index rel...

Afforestation has been one of the most effective measures to compensate for mangrove ecosystem loss across the world and requires a detailed understanding of all contributing hydrological and physico-chemical factors affecting their growth. In this study, the Maxent habitat suitability model was employed to identify suitable mangrove habitats in the ​​Hara Roud-e Gaz Protected Area. Presence da...

2012
Joanna C. Ellison Isabella Zouh

Intertidal mangrove ecosystems are sensitive to climate change impacts, particularly to associated relative sea level rise. Human stressors and low tidal range add to vulnerability, both characteristics of the Doula Estuary, Cameroon. To investigate vulnerability, spatial techniques were combined with ground surveys to map distributions of mangrove zones, and compare with historical spatial rec...

2015
Steven E. Orchard Lindsay C. Stringer Claire H. Quinn

Environment and development issues are complex and interdependent. Institutions underpinning state, private sector and civil society actions at various levels must address complexity to ensure social-ecological system integrity. However, responses often operate at only one governance level, with limited interactions with other levels, restricting their ability to support communities who depend ...

Journal: :Remote Sensing 2016
Ting Wang Hongsheng Zhang Hui Lin Chao-Yang Fang

The identification of species within an ecosystem plays a key role in formulating an inventory for use in the development of conservation management plans. The classification of mangrove species typically involves intensive field surveys, whereas remote sensing techniques represent a cost-efficient means of mapping and monitoring mangrove forests at large scales. However, the coarse spectral re...

2013
Christopher H. Vane Alexander W. Kim Vicky Moss-Hayes Colin E. Snape Miguel Castro Diaz Nicole S. Khan Simon E. Engelhart Benjamin P. Horton

[1] Arboreal termites are wood decaying organisms that play an important role in the first stages of C cycling in mangrove systems. The chemical composition of Rhizophora mangle, Avicennia germinans, and Laguncularia racemosa leaf, stem, and pneumatophore tissues as well as associated sediments was compared to that of nests of the termite Nasutitermes acajutlae. Nests gave C values of 26.1 to 2...

Journal: :Remote Sensing 2016
Ian Brown Simon Mwansasu Lars-Ove Westerberg

The mangroves of the Rufiji Delta are an important habitat and resource. The mangrove forest reserve is home to an indigenous population and has been under pressure from an influx of migrants from the landward side of the delta. Timely and effective forest management is needed to preserve the delta and mangrove forest. Here, we investigate the potential of polarimetric target decomposition for ...

2015
Stuart E. Hamilton John Lovette

In this paper we estimate the living carbon lost from Ecuador's mangrove forests since the advent of export-focused shrimp aquaculture. We use remote sensing techniques to delineate the extent of mangroves and aquaculture at approximately decadal periods since the arrival of aquaculture in each Ecuadorian estuary. We then spatiotemporally calculate the carbon values of the mangrove forests and ...

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