Search

Your search keyword '"Obade, Paul"' showing total 23 results
Start Over Author "Obade, Paul"
23 results on '"Obade, Paul"'

14. Restoration of mangroves

Author

Dahdouh-Guebas, Farid, Bosire, Jared, Obade, Paul, Koedam, Nico, General Botany and Nature Management, and Vrije Universiteit Brussel

Published
2004

16. Impact of anthropogenic disturbance on a mangrove forest assessed by a 1D-cellular automaton model using Lotka-Volterra type competition

Author

Obade, Paul T., Koedam, Nico, Soetaert, Karline, Neukermans, Griet, Bogaert, Jan, Nyssen, Edgar, Van Nedervelde, Fleur, Berger, Uta, Dahdouh-Guebas, Farid, Obade, Paul T., Koedam, Nico, Soetaert, Karline, Neukermans, Griet, Bogaert, Jan, Nyssen, Edgar, Van Nedervelde, Fleur, Berger, Uta, and Dahdouh-Guebas, Farid

Abstract

Mangrove forests are ecologically and economically important and frequently dominating protected coastal areas in the tropics and subtropics at suitable intertidal zones and are often subjected to disturbances that disrupt the structure of an ecosystem, that change resource availability and that create patterns in vegetation by producing a mosaic of serai stages that ecologists have long recognised as important to landscape-level patch mosaics. Several good reasons justify the need for pursuing a predictive understanding of the ecology of mangrove species competition including the role of disturbance events and the aftermath. A predictive understanding can challenge our assumptions concerning the factors that control plant distribution and abundance and provide techniques for predicting rates of species change ranges in response to disturbances. The aim of this study was to evaluate and predict the impact of canopy disturbances on Gazi Bay mangrove forests and the subsequent vegetation patterns both spatially and temporally. The use of a simple 1D cellular automaton provided a detailed and nearly comprehensive parameterisation of the model by forest structure parameters belonging to the standard measurements of mangrove field surveys. In the study presented, the field data were obtained for disturbance impacts at various spatial scales considering not only the spatial extent of the disturbance but also its particular location. For this, multiple sampling transects were selected a priori, based on the vegetation patterns observed on Quickbird satellite image (2002) of Gazi, to reflect major ecological zones and vegetation transitions in space. Earlier field studies already revealed different population trajectories in some cases for the same pairwise species interactions, which are consistent with the hypothesis that different scales of disturbances may affect succession trends. Simulation experiments supported these findings by demonstrating that varying disturbance, info:eu-repo/semantics/published

Published
2009

17. Impact of anthropogenic disturbance on a mangrove forest assessed by a id cellular automaton model using lotka-volterra-type competition

Author

Obade, Paul T., Koedam, Nico, Neukermans, Griet, Dahdouh-Guebas, Farid, Soetaert, Karline, Bogaert, Jan, Nyssen, Edgar, Van Nedervelde, Fleur, Berger, Uta, Obade, Paul T., Koedam, Nico, Neukermans, Griet, Dahdouh-Guebas, Farid, Soetaert, Karline, Bogaert, Jan, Nyssen, Edgar, Van Nedervelde, Fleur, and Berger, Uta

Abstract

Mangrove forests are ecologically and economically important and frequently dominating protected coastal areas in the tropics and subtropics at suitable intertidal zones and are often subjected to disturbances that disrupt the structure of an ecosystem, that change resource availability and that create patterns in vegetation by producing a mosaic of serai stages that ecologists have long recognised as important to landscape-level patch mosaics. Several good reasons justify the need for pursuing a predictive understanding of the ecology of mangrove species competition including the role of disturbance events and the aftermath. A predictive understanding can challenge our assumptions concerning the factors that control plant distribution and abundance and provide techniques for predicting rates of species change ranges in response to disturbances. The aim of this study was to evaluate and predict the impact of canopy disturbances on Gazi Bay mangrove forests and the subsequent vegetation patterns both spatially and temporally. The use of a simple 1D cellular automaton provided a detailed and nearly comprehensive parameterisation of the model by forest structure parameters belonging to the standard measurements of mangrove field surveys. In the study presented, the field data were obtained for disturbance impacts at various spatial scales considering not only the spatial extent of the disturbance but also its particular location. For this, multiple sampling transects were selected a priori, based on the vegetation patterns observed on Quickbird satellite image (2002) of Gazi, to reflect major ecological zones and vegetation transitions in space. Earlier field studies already revealed different population trajectories in some cases for the same pairwise species interactions, which are consistent with the hypothesis that different scales of disturbances may affect succession trends. Simulation experiments supported these findings by demonstrating that varying disturbance, SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2008

19. Modeling the influence of disturbance on spatial-temporal variations of Kenyan mangroves in Gazi Bay

Author

International Symposium on Aquatic Vascular Plants (11-13 Janvier 2006: Bruxelles, Belgique), Obade, Paul T., Dahdouh-Guebas, Farid, Soetaert, Karline, Koedam, Nico, International Symposium on Aquatic Vascular Plants (11-13 Janvier 2006: Bruxelles, Belgique), Obade, Paul T., Dahdouh-Guebas, Farid, Soetaert, Karline, and Koedam, Nico

Abstract

info:eu-repo/semantics/nonPublished

Published
2006

21. Restoration of mangroves

Author

NECOV (The Netherlands-Vlaamse vereniging voor ecologie) Syposium on Exploitation and Restoration of Tropical Aquatic Ecosystems (7 Octobre 2004: Bruxelles, Belgique), Dahdouh-Guebas, Farid, Bosire, Jared O., Obade, Paul T., Koedam, Nico, NECOV (The Netherlands-Vlaamse vereniging voor ecologie) Syposium on Exploitation and Restoration of Tropical Aquatic Ecosystems (7 Octobre 2004: Bruxelles, Belgique), Dahdouh-Guebas, Farid, Bosire, Jared O., Obade, Paul T., and Koedam, Nico

Abstract

(keynote speaker), info:eu-repo/semantics/nonPublished

Published
2004

22. Evaluation, restoration and management practices in the conservation of tropical, Mediterranean and temperate forest ecosystems

Author

Botanische biodiversiteit en de Belgische expertise BBB2001 Symposium (19-20 Octobre 2001: Kasteel van Bouchout, Nationale Plantentuin van Belgique, Meise, Belgique), Koedam, Nico, Godefroid, Sandrine, Dahdouh-Guebas, Farid, Sivcev, V., Kairo, James G., Verheyden, Anouk, Bosire, Jared O., Dubois, T, Obade, Paul T., Botanische biodiversiteit en de Belgische expertise BBB2001 Symposium (19-20 Octobre 2001: Kasteel van Bouchout, Nationale Plantentuin van Belgique, Meise, Belgique), Koedam, Nico, Godefroid, Sandrine, Dahdouh-Guebas, Farid, Sivcev, V., Kairo, James G., Verheyden, Anouk, Bosire, Jared O., Dubois, T, and Obade, Paul T.

Abstract

info:eu-repo/semantics/nonPublished

Published
2001

23. Distribution and abundance of the Louisiana red swamp crayfish Procambarus clarkii Girard at Lake Naivasha, Kenya between 1987 and 1999.

Author

Smart, Andrew C., Harperl, David M., Schmitz, Sophie, Coley, Stephanie, de Beauregard, Anne-Christine Gouder, North, Rick, Adams, Chris, Obade, Paul, and Kamau, Mbogo

Subjects
HABITATS, PROCAMBARUS clarkii, PROCAMBARUS, LAKES
Abstract

The abundance and habitat distribution of Procambarus clarkii, an exotic herbivore at Lake Naivasha, Kenya, was studied between 1987 and 1999. Its growth and morphometrics were similar to other locations in the world where the species have been studied. P. clarkii was found primarily amongst the floating, exotic vegetation where it achieved densities of over 500 m-2 by the end of the study. It is suggested that these densities became possible because the habitat offers protection against predation and an adequate food supply of bacterial-enriched detritus exists in the absence of green plant material. Both adults and juveniles forage on the lake bed at night. [ABSTRACT FROM AUTHOR]

Published
2002
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results