| publications-521 |
PEER REVIEWED ARTICLE |
2011 |
Alejandra G. Vovides , Jorge LĂłpez-Portillo , Yoav Bashan |
N2-fixation along a gradient of long-term disturbance in tropical mangroves bordering the gulf of Mexico |
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10.1007/s00374-011-0562-4 |
Uncategorized |
Irrigation Systems |
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No abstract available |
247514 |
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| publications-522 |
PEER REVIEWED ARTICLE |
2011 |
Alejandra G. Vovides , Yoav Bashan , Jorge A. LĂłpez-Portillo , Roger Guevara |
Nitrogen Fixation in Preserved, Reforested, Naturally Regenerated and Impaired Mangroves as an Indicator of Functional Restoration in Mangroves in an Arid Region of Mexico |
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10.1111/j.1526-100x.2010.00713.x |
Hydrological modeling |
Irrigation Systems |
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Although several damaged mangrove ecosystems have been restored worldwide, so far, it has not been established whether a restored mangrove system regains all the functional properties of preserved mangroves. This study measured nitrogen fixation as an indicator of whether disturbed mangroves that were reforested or naturally regenerated fully recovered from this disturbance at a functional level. Rates of nitrogen fixation were measured for one year in impaired, preserved, reforested, and naturally regenerated mangroves dominated by the black mangrove (Avicennia germinans). There was no significant difference in rates of nitrogen fixation among preserved and adjacent reforested and naturally regenerated mangroves, but a significant reduction occurred in an impaired mangrove. Nitrogen fixation was mainly controlled by pH, salinity, and temperature. The highest rates of nitrogen fixation occurred in summer at pH values less than 6.4, whereas the impaired mangrove had higher pH and salinity and had very low nitrogen fixation activity. These results suggest that nitrogen fixation can be used as an ecological indicator of the success of reforestation and as a sensitive measure of perturbations in mangroves. |
247514 |
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| publications-523 |
PEER REVIEWED ARTICLE |
2012 |
Juliane Vogt , Annegret SkĂłra , Ilka C. Feller , Cyril Piou , Glenn Coldren , Uta Berger |
Investigating the role of impoundment and forest structure on the resistance and resilience of mangrove forests to hurricanes |
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10.1016/j.aquabot.2011.10.006 |
Uncategorized |
Irrigation Systems |
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No abstract available |
247514 |
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| publications-524 |
PEER REVIEWED ARTICLE |
2014 |
Nibedita Mukherjee , William J. Sutherland , Md Nabiul I. Khan , Uta Berger , Nele Schmitz , Farid Dahdouh-Guebas , Nico Koedam |
Using expert knowledge and modeling to define mangrove composition, functioning, and threats and estimate time frame for recovery |
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10.1002/ece3.1085 |
Hydrological modeling |
Precipitation & Ecological Systems |
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AbstractMangroves are threatened worldwide, and their loss or degradation could impact functioning of the ecosystem. Our aim was to investigate three aspects of mangroves at a global scale: (1) their constituents (2) their indispensable ecological functions, and (3) the maintenance of their constituents and functions in degraded mangroves. We focused on answering two questions: “What is a mangrove ecosystem” and “How vulnerable are mangrove ecosystems to different impacts”? We invited 106 mangrove experts globally to participate in a survey based on the Delphi technique and provide inputs on the three aspects. The outputs from the Delphi technique for the third aspect, i.e. maintenance of constituents and functions were incorporated in a modeling approach to simulate the time frame for recovery. Presented here for the first time are the consensus definition of the mangrove ecosystem and the list of mangrove plant species. In this study, experts considered even monospecific (tree) stands to be a mangrove ecosystem as long as there was adequate tidal exchange, propagule dispersal, and faunal interactions. We provide a ranking of the important ecological functions, faunal groups, and impacts on mangroves. Degradation due to development was identified as having the largest impact on mangroves globally in terms of spatial scale, intensity, and time needed for restoration. The results indicate that mangroves are ecologically unique even though they may be species poor (from the vegetation perspective). The consensus list of mangrove species and the ranking of the mangrove ecological functions could be a useful tool for restoration and management of mangroves. While there is ample literature on the destruction of mangroves due to aquaculture in the past decade, this study clearly shows that more attention must go to avoiding and mitigating mangrove loss due to coastal development (such as building of roads, ports, or harbors). |
247514 |
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| publications-525 |
PEER REVIEWED ARTICLE |
2011 |
Njisuh Z. Feka , Mario G. Manzano , Farid Dahdouh-Guebas |
The effects of different gender harvesting practices on mangrove ecology and conservation in Cameroon |
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10.1080/21513732.2011.606429 |
Data Management & Analytics |
Natural Water Bodies |
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No abstract available |
247514 |
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| publications-526 |
PEER REVIEWED ARTICLE |
2011 |
Adolphe Nfotabong-Atheull , Ndongo Din , Léopold G Essomè Koum , Behara Satyanarayana , Nico Koedam , Farid Dahdouh-Guebas |
Assessing forest products usage and local residents perception of environmental changes in peri-urban and rural mangroves of Cameroon, Central Africa |
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10.1186/1746-4269-7-41 |
Hydrological modeling |
Irrigation Systems |
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Abstract Background Deforestation is one of the most ubiquitous forms of land degradation worldwide. Although remote sensing and aerial photographs can supply valuable information on land/use cover changes, they may not regularly be available for some tropical coasts (e.g., Cameroon estuary) where cloud cover is frequent. With respect to mangroves, researchers are now employing local knowledge as an alternative means of understanding forest disturbances. This paper was primarily aimed at assessing the mangrove forest products usage, along with the local people's perceptions on environmental changes, between Littoral (Cameroon estuary) and Southern (mouth of the Nyong River and Mpalla village) regions of Cameroon. Methods The data from both locations were obtained through conducting household interviews and field observations. Results In the Cameroon estuary (Littoral region), 69.23% of respondents (mostly elders) could distinguish two to four mangrove plants, whereas the informants (65.45%) in the mouth of the Nyong River and Mpalla village (mostly young people interviewed from the Southern region) are familiar with only one or two commonly found mangroves. Also, more respondents from the Cameroon estuary are depending on mangroves for fuelwood (Rhizophora spp.) and housing (Rhizophora spp., Avicennia germinans (L.) Stearn and Nypa fruticans (Thumb.) Wurmb.) purposes, in contrast to Nyong River mouth and Mpalla village. Although local people perceived wood extraction as a greater disruptive factor, there are several causes for mangrove depletion in the Cameroon estuary. Among others, over-harvesting, clear-felled corridors, sand extraction and housing were found important. Furthermore, a decline in mangrove fauna composition (in terms of fishery products) was recorded in the Littoral as well as Southern regions. However, the causes of such perceived negative changes were not similar in both cases. Conclusions Findings of this study highlight the need to improve sustainable management of the mangrove ecosystems through afforestation (in large impacted areas), selective removal of senescent tree stems and branches (in little damage stands), regulating sand extraction and housing activities, and creating awareness and law enforcement. |
247514 |
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| publications-527 |
PEER REVIEWED ARTICLE |
2011 |
Behara Satyanarayana , Khairul Azwan Mohamad , Indra Farid Idris , Mohd-Lokman Husain , Farid Dahdouh-Guebas |
Assessment of mangrove vegetation based on remote sensing and ground-truth measurements at Tumpat, Kelantan Delta, East Coast of Peninsular Malaysia |
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10.1080/01431160903586781 |
Uncategorized |
Irrigation Systems |
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No abstract available |
247514 |
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| publications-528 |
PEER REVIEWED ARTICLE |
2011 |
B. Gallardo |
Application of Bioclimatic models coupled with Network Analysis for risk assessment of the killer shrimp, Dikerogammarus villosus, in Great Britain |
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10.1007/s10530-011-0154-0 |
Uncategorized |
Irrigation Systems |
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No abstract available |
251785 |
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| publications-529 |
PEER REVIEWED ARTICLE |
2012 |
Alsina, J.M., Caceres, I., Brocchini, M. and Baldock, T. |
An experimental study on sediment transport and bed evolution under different swash zone morphological conditions |
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10.1016/j.coastaleng.2012.04.008 |
Uncategorized |
Irrigation Systems |
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No abstract available |
252374 |
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| publications-530 |
PEER REVIEWED ARTICLE |
2012 |
Mattioli, M., Alsina, J.M., Mancinelli, A., Miozzi, M. and Brocchini |
Experimental investigation of the nearbed dynamics around a submarine pipeline laying on different types of seabed: The interaction between turbulent structures and particles |
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10.1016/j.advwatres.2012.04.010 |
Uncategorized |
Irrigation Systems |
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No abstract available |
252374 |
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