A5006533090- Wildlife Ecology and Conservation
- Genetic diversity and population structure
- Rangeland Management and Livestock Ecology
- Primate Behavior and Ecology
- Genetic and phenotypic traits in livestock
- Species Distribution and Climate Change
- Animal Disease Management and Epidemiology
- Animal Diversity and Health Studies
- Animal Behavior and Welfare Studies
- Animal Ecology and Behavior Studies
- Ecology and biodiversity studies
- Bat Biology and Ecology Studies
- Ecology and Vegetation Dynamics Studies
- Animal Behavior and Reproduction
- Avian ecology and behavior
- Genomics and Phylogenetic Studies
- Wildlife-Road Interactions and Conservation
- Evolution and Paleontology Studies
- Genetic Mapping and Diversity in Plants and Animals
- Circadian rhythm and melatonin
- Hydrology and Sediment Transport Processes
- Identification and Quantification in Food
- Zoonotic diseases and public health
- Marine animal studies overview
- Soil erosion and sediment transport
Cheetah Conservation Fund
2016-2025
University College Dublin
2023-2024
Trinity College Dublin
2024
UNSW Sydney
2014-2021
Environmental Earth Sciences
2020
Giraffe Conservation Foundation
2020
The University of Sydney
2009
Desert Research Foundation of Namibia
2002-2003
Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database 803 individuals 57 species, we found that mammals in areas with comparatively high human were average one-half to one-third extent their low footprint. We attribute this reduction behavioral changes individual animals exclusion long-range from higher impact. Global loss...
COVID-19 lockdowns in early 2020 reduced human mobility, providing an opportunity to disentangle its effects on animals from those of landscape modifications. Using GPS data, we compared movements and road avoidance 2300 terrestrial mammals (43 species) during the same period 2019. Individual responses were variable with no change average or behavior, likely due lockdown conditions. However, under strict 10-day 95th percentile displacements increased by 73%, suggesting permeability. Animals'...
Species is the fundamental taxonomic unit in biology and its delimitation has implications for conservation. In giraffe (Giraffa spp.), multiple classifications have been proposed since early 1900s.1Shorrocks B. Present distribution geographical races.in: The Giraffe: Biology, Ecology, Evolution Behaviour. John Wiley & Sons, 2016: 26-41Crossref Google Scholar However, one species with nine subspecies generally accepted,2Dagg A.I. Giraffa camelopardalis.Mamm. Species. 1971; : 1-8Crossref...
Abstract Accurately quantifying species’ area requirements is a prerequisite for effective area‐based conservation. This typically involves collecting tracking data on species of interest and then conducting home‐range analyses. Problematically, autocorrelation in can result space needs being severely underestimated. Based the previous work, we hypothesized magnitude underestimation varies with body mass, relationship that could have serious conservation implications. To evaluate this...
Abstract Estimates of home range size giraffe in the northern Namib Desert were on average larger than those other populations. In particular, largest individual any bull (1950 km 2 ) was recorded – correlated with low population density, reduced forage density and increased searching for receptive cows. The predominant pattern movement linear, along riparian environments, however, large‐scale irregular movements into tributaries areas also recorded. Small‐scale by bulls mountains above...
All giraffe (Giraffa) were previously assigned to a single species (G. camelopardalis) and nine subspecies. However, multi-locus analyses of all subspecies have shown that there are four genetically distinct clades suggest species. This conclusion might not be fully accepted due limited data lack explicit gene flow analyses. Here, we present an extended study based on 21 independent nuclear loci from 137 individuals. Explicit identify less than one migrant per generation, including between...
The West African giraffe Giraffa camelopardalis peralta , the rarest subspecies, is one of least studied taxa megafauna in terms anatomy, physiology, and taxonomy due to limited material hosted museum collections. Here, we discuss specific morphological features holotype this re‐evaluate its diagnostic characteristics expand our knowledge morphology taxon with addition specimens collected wild. Our results show that G. c. not a subspecies ‘gigantic’ proportions, as indicated previous...
Abstract Giraffe populations have declined in abundance by almost 40% over the last three decades, and geographic ranges of species (previously believed to be one, now defined as four species) been significantly reduced or altered. With substantial changes land uses, loss habitat, declining abundance, translocations, data gaps, existing range maps for giraffe need updated. We performed a review data, including aerial ground observations giraffe, maps, available literature. The information we...
This study presents the first findings on nocturnal behavior patterns of wild Angolan giraffe. We characterized their and analyzed influence ecological factors such as group size, season, habitat use. Giraffe were observed using night vision systems thermal imaging cameras Okapuka Ranch, Namibia. A total 77 giraffe during 24 nights over two distinct periods-July-August 2016 (dry season) February-March 2017 (wet season). Photoperiod had a marked activity moving behavior. At dusk, reduced time...
The results of the application bronchial brushing technique to 57 cases pulmonary disease in patients at risk for opportunistic infection are described. Eight 10 studies with Pneumocystis carinii pneumonitis yielded adequate material definitive diagnosis. Bacterial cultures after nasotracheal catheterization were only value when correlated presence bacteria and inflammatory cells tissue sections. Despite problems pharyngeal contamination, specimens yielding viruses herpes group, Nocardia...
The current taxonomy of the African giraffe (Giraffa camelopardalis) is primarily based on pelage pattern and geographic distribution, nine subspecies are currently recognized. Although genetic studies have been conducted, their resolution low, mainly due to limited sampling. Detailed knowledge about variation phylogeography South (G. c. giraffa) Angolan angolensis) lacking. We investigate among matrilines by increased sampling, with a focus key areas in southern Africa. 1,562 nucleotides...
Animal movement behaviours are shaped by diverse factors, including resource availability and human impacts on the landscape. We generated home range estimates daily rate for 148 giraffe ( Giraffa spp . ) from all four species across Africa to evaluate effects of environmental productivity anthropogenic disturbance space use. Using continuous time modelling framework a novel application mixed meta-regression, we summarized overall use tested impact 95% autocorrelated kernel density estimate...
In the speciation continuum, strength of reproductive isolation varies, and species boundaries are blurred by gene flow. Interbreeding among giraffe (Giraffa spp.) in captivity is known, anecdotal reports natural hybrids exist. Kenya, Nubian (G. camelopardalis camelopardalis), reticulated reticulata), Masai sensu stricto tippelskirchi tippelskirchi) parapatric, thus, country might be a melting pot for these taxa. We analyzed 128 genomes wild giraffe, 113 newly sequenced, representing three...
Giraffe ( Giraffa spp.) are among the most unique extant mammals in terms of anatomy, phylogeny, and ecology. However, aspects their evolution, ontogeny, taxonomy unresolved, retaining lingering questions that pivotal for conservation. We assembled largest known dataset skulls (n = 515) to investigate patterns cranial variability using 3D geometric morphometrics. The results show distinct sexual dimorphism divergent ontogenetic trajectories skull shape north clade G . camelopardalis...
Abstract Conservation translocation is a management technique employed to introduce, re‐introduce or reinforce wild animal and plant populations. Giraffe translocations are being conducted throughout Africa, but the lack of effective post‐translocation monitoring limits our ability assess outcomes. One potential indicator success establishment characteristic movement home range behaviour in new location. We analysed patterns six Global Positioning System‐collared Angolan giraffes ( Giraffa...
Abstract Thornicroft's giraffe, G iraffa camelopardalis thornicrofti , is a geographically isolated subspecies of giraffe found only in north‐east Z ambia. The population occurs ambia's S outh L uangwa V alley, an area which interestingly places it between the current distribution Masai ( . c. tippelskirchi ) to north, and A ngolan angolensis frican giraffa south‐west south, respectively. Specific studies have been undertaken on ecology this subspecies, but their genetics remains unknown. We...