Institution
University of Antananarivo
Education•Antananarivo, Madagascar•
About: University of Antananarivo is a education organization based out in Antananarivo, Madagascar. It is known for research contribution in the topics: Population & Lemur. The organization has 1561 authors who have published 1703 publications receiving 30922 citations. The organization is also known as: Tananarive University & Antananarivo University.
Topics: Population, Lemur, Biodiversity, Animal ecology, Species richness
Papers published on a yearly basis
Papers
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TL;DR: This work test the eight-species hypothesis with DNA data derived from four independently segregating nuclear loci of mouse lemurs, finding many areas of congruence between the mitochondrial and nuclear data, but incomplete lineage sorting and low mutation rates limit the phylogenetic resolution of the nuclear data.
75 citations
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TL;DR: Stem morphology and anatomy restrict water movement between storage tissues and the conductive pathway, making stored-water usage more appropriate to longer-term water deficits than as a buffer against daily water deficits.
Abstract: Baobab trees are often cited in the literature as water-storing trees, yet few studies have examined this assumption. We assessed the role of stored water in buffering daily water deficits in two species of baobabs (Adansonia rubrostipa Jum. and H. Perrier and Adansonia za Baill.) in a tropical dry forest in Madagascar. We found no lag in the daily onset of sap flow between the base and the crown of the tree. Some night-time sap flow occurred, but this was more consistent with a pattern of seasonal stem water replenishment than with diurnal usage. Intrinsic capacitance of both leaf and stem tissue (0.07-0.08 and 1.1-1.43 MPa(-1), respectively) was high, yet the amount of water that could be withdrawn before turgor loss was small because midday leaf and stem water potentials (WPs) were near the turgor-loss points. Stomatal conductance was high in the daytime but then declined rapidly, suggesting an embolism-avoidance strategy. Although the xylem of distal branches was relatively vulnerable to cavitation (P50: 1.1-1.7 MPa), tight stomatal control and minimum WPs near--1.0 MPa maintained native embolism levels at 30-65%. Stem morphology and anatomy restrict water movement between storage tissues and the conductive pathway, making stored-water usage more appropriate to longer-term water deficits than as a buffer against daily water deficits.
75 citations
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TL;DR: In this paper, the effects on crop production and soil properties of liming and adding biochar were compared under field conditions in an acidic soil in the Madagascar highlands using a two-year rotation of maize intercropped with beans followed by rainfed upland rice over a period of six years.
74 citations
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01 Jan 2006
74 citations
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TL;DR: Ecotoxicological assessment based on the international Sediment Quality Guidelines (SQGs) showed that the toxic effects of the sediment in these watercourses and rivers occurred due to high levels of hydrocarbons.
74 citations
Authors
Showing all 1572 results
Name | H-index | Papers | Citations |
---|---|---|---|
Patricia C. Wright | 49 | 156 | 7970 |
Marc Lemaire | 48 | 399 | 9317 |
Steven M. Goodman | 39 | 249 | 7256 |
Patrick Mavingui | 37 | 114 | 4914 |
Elise Buisson | 31 | 130 | 3394 |
Jean-Michel Heraud | 29 | 124 | 3535 |
Steven M. Goodman | 28 | 77 | 4414 |
Florian Marks | 27 | 123 | 2844 |
L. Rakotondravohitra | 25 | 41 | 2490 |
Jonah Ratsimbazafy | 23 | 74 | 2174 |
Jérôme Ballet | 22 | 143 | 1741 |
Carine E. Chan-Thaw | 22 | 49 | 1809 |
Lydie Chapuis-Lardy | 22 | 46 | 2408 |
Arsène Ratsimbasoa | 21 | 58 | 1767 |
R. Raboanary | 20 | 29 | 2032 |