A5046927871- Amphibian and Reptile Biology
- Species Distribution and Climate Change
- Bat Biology and Ecology Studies
- Ecology and Vegetation Dynamics Studies
- Fish Biology and Ecology Studies
- Wildlife Ecology and Conservation
- Plant and animal studies
- Rangeland and Wildlife Management
- Conservation, Biodiversity, and Resource Management
- Forest Management and Policy
- Pasture and Agricultural Systems
- Genomics and Phylogenetic Studies
- Lepidoptera: Biology and Taxonomy
- Animal Behavior and Reproduction
- Mosquito-borne diseases and control
- Fish biology, ecology, and behavior
- Isotope Analysis in Ecology
- Identification and Quantification in Food
- Parasite Biology and Host Interactions
- Fish Ecology and Management Studies
- Subterranean biodiversity and taxonomy
- Marine animal studies overview
- Primate Behavior and Ecology
- Digital Imaging for Blood Diseases
Universität Hamburg
2012-2022
University of Antananarivo
2017
Miniaturised frogs form a fascinating but poorly understood amphibian ecomorph and have been exceptionally prone to taxonomic underestimation. The subfamily Cophylinae (family Microhylidae), endemic Madagascar, has particularly large diversity of miniaturised species which historically attributed the single genus Stumpffia largely based on their small size. Recent phylogenetic work revealed that several independent lineages cophyline microhylids evolved towards highly body sizes, achieving...
Anthropogenic habitat alterations cause biodiversity loss, which in turn negatively affects ecosystem functioning and services, thus human well-being. To be able to consider conservation actions, analyzing the effects of alteration on functional diversity is essential. Some altered habitats can maintain a significant part regional biodiversity, however, information so far mostly lacking. We compared richness β-diversity based resource-use traits frogs between three land-use categories...
Semi-natural dry grassland sites are of great importance for nature conservation because they support high species diversity and the abundance "Red-List" species. Grazing has proved to be a successful management tool in terms maintenance restoration biodiversity. For deeper understanding effects different grazers on biodiversity grasslands, it is necessary study long-term major changes grazing management. In semi-natural habitat, which was formerly grazed by cattle, we investigated plant...
Human-induced conversion of natural habitats into agricultural areas is one the major drivers for biodiversity loss. In many tropical regions, matrix habitat area (habitat between fragments remaining habitat) considerably exceeds original habitat. Therefore, understanding factors determining quality animals a key step to guide conservation action in fragmented landscapes. Matrix habitat, although being often highly disturbed, might provide valuable some species, serves as buffer zone or...
Malagasy frogs of the subgenus Brygoomantis in mantellid frog genus Mantidactylus currently comprise 14 described species mostly brown, riparian frogs. Data from DNA barcoding suggested that diversity this is dramatically underestimated by current taxonomy. We here provide a comprehensive revision subgenus. use hybrid-enrichment based barcode fishing to obtain mitochondrial fragments name-bearing type material 16 20 available names for members subgenus, and integrate these into genetic...
Agricultural expansions and unsustainable resource extraction increasingly threaten biodiversity worldwide. Thus, knowledge on landscape management opportunities that contribute to conservation provide the necessary natural resources is urgently needed. Community-based can be one solution achieve sustainable provisioning conservation. However, evidence effectiveness of transfers local communities for scarce. We use a case study from south-western Madagascar discuss integration...
We describe a new species of small-sized frogs from degraded rainforest patches in the southern central east Madagascar. Stumpffia miery sp. nov. has snout-vent length 13–15 mm and can be distinguished all other nominal by its body size absence toe reduction combined with fingers I, II IV external view. The advertisement call is single tonal chirping note that ranges duration between 51–88 ms emitted after relatively regular inter-note intervals (duration 2679–4247 ms, repetition rate...
The genus Typhleotris contains three poorly known blind fish species, inhabiting aquifers in the limestone plateau of south-western Madagascar. Until recently these species were from only few localities, and their pattern genetic differentiation remains studied. In this study we analyse 122 tissue samples collected 12 spanning entire range genus, use DNA sequences to assign known. phylogeny based on mitochondrial marker cox1 revealed main clades corresponding species: madagascariensis, T....
Abstract Analyses of stable isotope ratios are widely applied in studies on a large variety aspects trophic ecology. Most rely precise estimation the relevant discrimination factor Δ (also called fractionation factor), that reflects or differences certain element (mainly nitrogen N and carbon C) between an animal’s diet its tissue is used to identify one step food web. We experimentally determined ΔN ΔC two species widespread amphibians Europe, Rana temporaria Bufo bufo , tested for effect...
The karstic subterranean aquatic system of the Mahafaly Plateau in south-western Madagascar is inhabited by two species cavefish: Typhleotris madagascariensis and mararybe. Knowledge about both cavefish scant. In order to learn more distribution species, 15 caves sinkholes spread over were inventoried for their presence. Abiotic water quality interspecific relations investigated six these five during dry rainy seasons. was present all sampled bodies while T. mararybe restricted sites region...
With over 70 nominal species, treefrogs of the genus Boophis (family Mantellidae) represent one most species-rich lineages in amphibian fauna Madagascar (Cadle 2003). Most are characterized by relatively loud and conspicuous calls, but specimens can be difficult to collect because males often perched high on trees. Therefore, many species so far only known from a few specimens, usually males. An exception is recently described arcanus, which two female for no further biological data...