Search Results - "Kefi, S."

Post-fire Regeneration Traits of Understorey Shrub Species Modulate Successional Responses to High Severity Fire in Mediterranean Pine Forests by Vasques, A., Baudena, M., Vallejo, V. R., Kéfi, S., Bautista, S., Santana, V. M., Baeza, M. J., Maia, P., Keizer, J. J., Rietkerk, M.

“…Recurrent fires can impede the spontaneous recruitment capacity of pine forests. Empirical studies have suggested that this can lead to a prolonged replacement…”
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Postharvest fish losses and unequal gender relations: drivers of the social-ecological trap in the Barotse Floodplain fishery, Zambia by Cole, Steven M., McDougall, Cynthia, Kaminski, Alexander M., Kefi, Alexander S., Chilala, Alex, Chisule, Gethings

“…The Barotse Floodplain fishery is an important source of livelihood for economically poor women and men in western Zambia. Current efforts by the Department of…”
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Changes in diatom patch-size distribution and degradation in a spatially self-organized intertidal mudflat ecosystem by Weerman, E. J, Van Belzen, J, Rietkerk, M, Temmerman, S, Kéfi, S, Herman, P. M. J, de Koppel, J. Van

“…Self-organized spatial patterns have been proposed as possible indicators for regime shifts in ecosystems. Until now, this hypothesis has only been tested in…”
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Modeling shrub encroachment in subalpine grasslands under different environmental and management scenarios by Komac, B., Kefi, S., Nuche, P., Escós, J., Alados, C.L.

“…Woody plants are spreading in many alpine and subalpine ecosystems and are expected to continue increasing in response to land abandonment and global warming…”
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Dispersal strategies and spatial organization of vegetation in arid ecosystems by Pueyo, Y., Kefi, S., Alados, C. L., Rietkerk, M.

“…Seed dispersal and establishment are critical stages for plants in arid environments, where vegetation is spatially organized in patches with suitable and…”
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Commercialization and upgrading in the aquaculture value chain in Zambia by Kaminski, Alexander M., Genschick, Sven, Kefi, Alexander S., Kruijssen, Froukje

“…After decades of government and donor-run programs that sustained extensive aquaculture systems, Zambia has experienced market-led capital investments that…”
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Prongnostic Implication of Cytogenetic Abnomalities for Newly Diagnosed Muliple Myeloma in Young Patients: Tunisian Monocenter Experience by Zarrouk, M, Mejri, A, Mansouri, R, Bechir, M, Beneji, H, Ben Abdennebi, Y, Kacem, K, Kefi, S, Aissaoui, L, Belhajali, Z, Benabid, H, Benlakhel, R, Meddeb, B

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Leukemia in Patients with Klinefelter Syndrome: A Report of Two Cases by Bchir, M., Ayed, W., Neji, H. Ben, Kilani, O., Kefi, S., Zarrouk, M., Guermani, H., Hentati, S., Amouri, A., Meddeb, B.

“…Klinefelter syndrome (KS) is a chromosome abnormality characterized by a 47, XXY karyotype associated with hypogonadism and infertility. We present two cases…”
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Is the patch size distribution of vegetation a suitable indicator of desertification processes? Comment by Kéfi, S, Alados, C. L, Chaves, R. C. G, Pueyo, Y, Rietkerk, M

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Early warning signals of ecological transitions: methods for spatial patterns by Kéfi, Sonia, Guttal, Vishwesha, Brock, William A, Carpenter, Stephen R, Ellison, Aaron M, Livina, Valerie N, Seekell, David A, Scheffer, Marten, van Nes, Egbert H, Dakos, Vasilis

“…A number of ecosystems can exhibit abrupt shifts between alternative stable states. Because of their important ecological and economic consequences, recent…”
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The role of reproductive plant traits and biotic interactions in the dynamics of semi-arid plant communities by Pueyo, Y., Kéfi, S., Díaz-Sierra, R., Alados, C.L., Rietkerk, M.

“…The dynamics of semi-arid plant communities are determined by the interplay between competition and facilitation among plants. The sign and strength of these…”
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Methods for detecting early warnings of critical transitions in time series illustrated using simulated ecological data by Dakos, Vasilis, Carpenter, Stephen R, Brock, William A, Ellison, Aaron M, Guttal, Vishwesha, Ives, Anthony R, Kéfi, Sonia, Livina, Valerie, Seekell, David A, van Nes, Egbert H, Scheffer, Marten

“…Many dynamical systems, including lakes, organisms, ocean circulation patterns, or financial markets, are now thought to have tipping points where critical…”
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Efficacité et tolérance de la toxine botulique dans l’hémispasme facial by Mazlout, H., Kamoun Gargouri, H., Triki, W., Kéfi, S., Brour, J., El Afrit, M.A., Chéour, M., Kraiem, A.

“…Devant les échecs des thérapeutiques pharmacologiques et chirurgicales dans l’hémispasme facial, l’utilisation de la toxine botulique en première intention…”
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Early warning signals also precede non-catastrophic transitions by Kéfi, Sonia, Dakos, Vasilis, Scheffer, Marten, Van Nes, Egbert H., Rietkerk, Max

“…Ecosystem responses to external changes can surprise us by their abruptness and irreversibility. Models have helped identifying indicators of impending…”
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Spatial vegetation patterns and imminent desertification in Mediterranean arid ecosystems by Kefi, S, Rietkerk, M, Alados, C.L, Pueyo, Y, Papanastasis, V.P, ElAich, A, Ruiter, P.C. de

“…Humans and climate affect ecosystems and their services, which may involve continuous and discontinuous transitions from one stable state to another…”
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Robust scaling in ecosystems and the meltdown of patch size distributions before extinction by Kéfi, Sonia, Rietkerk, Max, Roy, Manojit, Franc, Alain, de Ruiter, Peter C., Pascual, Mercedes

“…Ecology Letters (2011) 14: 29–35 Robust critical systems are characterized by power laws which occur over a broad range of conditions. Their robust behaviour…”
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Local Facilitation May Cause Tipping Points on a Landscape Level Preceded by Early-Warning Indicators by Xu, Chi, Van Nes, Egbert H., Holmgren, Milena, Kéfi, Sonia, Scheffer, Marten

“…Positive biotic interactions play a significant role in shaping ecological communities. We used an individual-based model to demonstrate that plant…”
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Can we infer plant facilitation from remote sensing? a test across global drylands by Xu, Chi, Holmgren, Milena, Van Nes, Egbert H, Maestre, Fernando T, Soliveres, Santiago, Berdugo, Miguel, Kéfi, Sonia, Marquet, Pablo A, Abades, Sebastián, Scheffer, Marten

“…Facilitation is a major force shaping the structure and diversity of plant communities in terrestrial ecosystems. Detecting positive plant-plant interactions…”
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Optimal Dietary Plant Based Lipid on Growth of Oreochromis andersonii (Castelnau, 1861) by Kefi, A S, Kang'ombe, J, Kassam, D, Katongo, C

“…An experiment was set to determine the optimal plant based lipid of soy bean and maize on the growth and feed utilisation of Oreochromis andersonii. Three…”
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Prey selection under laboratory conditions by pond-bred Trematocranus placodon (Regan, 1922), a molluscivorous cichlid from Lake Malaŵi by Kefi, Alexander S, Madsen, Henry, Likongwe, Jeremy S, Jere, Wilson, Stauffer, Jay R

“…Trematocranus placodon , a predator of freshwater snails in Lake Malaŵi, has been recommended for the control of schistosome intermediate hosts in aquaculture…”
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