Publications
Contrast in larval sensitivity to low pH in sea urchins from neighbouring seagrass meadows at Inhaca Island, Mozambique
Sea urchin larvae from intertidal seagrass meadows at Inhaca Island, Mozambique, exhibit greater sensitivity to low pH conditions compared to their subtidal counterparts. This contrast suggests that local adaptation to pH variability may differ between intertidal and subtidal environments, challenging the assumption that physiological tipping points universally correlate with the lowest experienced pH in an organism's range. Researchers exposed larvae of Tripneustes gratilla from two neighboring seagrass habitats—one subtidal (EBMI) and one intertidal (Banguá)—to four pH treatments (ranging from 8.04 to 7.29) for seven days, observing declines in survival, growth, and symmetry under lower pH conditions. The findings imply that subtidal urchins, which experience more stable pH, may possess distinct mechanisms for pH tolerance, highlighting potential vulnerabilities as ocean acidification intensifies.
Spatial and temporal variability of fouling communities on oyster spat collectors at Inhaca Island Southern Mozambique: Exploring the influence on recruitment of the oysters Pinctada capensis and Saccostrea cucullata
A study on Inhaca Island, Mozambique, reveals that fouling communities significantly influence oyster recruitment, with barnacles dominating in both rocky and seagrass habitats. While the rock oyster Saccostrea cucullata thrives in rocky areas and the pearl oyster Pinctada capensis in seagrass, other taxa show higher relative abundance where oysters and barnacles are less dense. The research, conducted over two seasons using oyster collectors deployed for four months, found that competitive interactions between fouling fauna and oysters remain modest within this timeframe. This work enhances understanding of environmental processes shaping intertidal invertebrate colonization in the southwestern Indian Ocean.
A world of beads from the Island of Mozambique (16th–20th centuries)
Beads recovered from the shores of the Island of Mozambique, spanning from the 16th to the 20th century, serve as a cultural palimpsest reflecting transoceanic trade and historical exchanges. These beads, originating from Europe, Asia, and Africa, are not only significant archaeological artifacts but also play a crucial role in the island's local economy today. The study highlights the island's strategic geographical position, which facilitated its role as a logistical hub for European monarchies trading in the Indian Ocean. By analyzing these beads, researchers uncover layers of historical trade, cultural interaction, and economic significance that persist into modern times.
Distribution and abundance of humpback whales, Megaptera novaeangliae, off the coast of Mozambique, 2003
A line-transect survey conducted off the coast of Mozambique in 2003 estimated the population of humpback whales (Megaptera novaeangliae) and unidentified large whales to be approximately 6,808 individuals within a surveyed area of 14,029.5 square nautical miles. This estimate suggests a potential increase from earlier surveys in the early 1990s. The survey, spanning from Cabo Inhaca to north of Mozambique Island, revealed higher sighting densities between Cabo Inhaca and Xai-Xai, as well as around the Pantaloon and David Shoals northeast of Quelimane, with lower densities over the Sofala Banks. Whales were predominantly found in waters with higher salinity, possibly due to turbidity from river input. Cow-calf pairs were distributed across the entire region. The study utilized 951.8 nautical miles of search effort, primarily in passing mode due to high whale densities.
Mozambique Island, Cabaceira Pequena and the Wider Swahili World: An Archaeological Perspective
Recent archaeological excavations on the northern coast of Mozambique, including Mozambique Island and Cabaceira Pequena, reveal insights into the cosmopolitan nature of Swahili society at the time of Portuguese first contact. The study suggests that Swahili culture in this region was deeply integrated within a broader maritime cultural landscape centered around oceanic connections in the Indian Ocean Trade Network. While Swahili archaeology is well-established in Tanzania and Kenya, this research begins to address gaps in understanding northern Mozambique's role in the Swahili world. Preliminary findings highlight the diversity of communities, arts, cultures, and beliefs that characterized Swahili society, incorporating influences from Africa, India, the Middle East, and the Far East.
Phylogenetics of the freshwater crab (Potamonautes MacLeay, 1838) fauna from ‘sky islands’ in Mozambique with the description of a new species (Brachyura: Potamoidea: Potamonautidae)
Researchers have identified a new species of freshwater crab, Potamonautes licoensis, from Mount Lico, a 'sky island' in Mozambique. Phylogenetic analysis using mitochondrial DNA sequences revealed that this species diverged during the Miocene to Pleistocene era and is closely related to Potamonautes choloensis. The study suggests that the diversity of freshwater crabs in Mozambique is significantly underrepresented, highlighting the need for further systematic surveys. Additionally, it underscores the importance of conserving these mountainous 'sky islands' as they harbor unique biodiversity.
A new species of tree snake (Dipsadoboa, Serpentes: Colubridae) from ‘sky island’ forests in northern Mozambique, with notes on other members of the Dipsadoboa werneri group
Researchers have identified a new species of tree snake, Dipsadoboa montisilva, from the 'sky island' forests of Mount Mabu and Mount Ribáuè in northern Mozambique. This discovery is supported by phylogenetic analysis using mitochondrial DNA, distinguishing it from other Dipsadoboa species found in Mozambique. The new species exhibits unique scalation, coloration, and body form, placing it within the D. werneri-shrevei complex but differing significantly in subcaudal counts, temporal patterns, and supralabial features. Additionally, the study reassesses the status of D. shrevei in East Africa, raising a poorly-known subspecies to full species status based on morphological and habitat differences. The Rondo Plateau population in Tanzania is treated as an uncertain species due to its isolation and scalation discrepancies. The findings underscore the high conservation importance of Mozambique's forest 'sky islands,' which harbor numerous endemic species threatened by habitat destruction.
Multi-trace-element sea surface temperature coral reconstruction for the southern Mozambique Channel reveals teleconnections with the tropical Atlantic
A coral-based sea surface temperature (SST) reconstruction for the southern Mozambique Channel reveals significant warming trends and teleconnections with distant ocean regions. Using Sr/Ca ratios from Porites sp. corals, researchers documented a 0.58°C warming trend from 1970 to 2013, aligning closely with instrumental data. While Li/Mg proxies showed unrealistic warming due to calibration uncertainties, combined Sr/Ca and Li/Mg records correlated strongly with local climate variability in the Mozambique Channel and distant regions like the tropical Atlantic, where surface wind patterns dominated SST variability. The study identifies the Pacific–North American (PNA) atmospheric pattern and tropical North Atlantic SST as key drivers of these teleconnections, offering insights into large-scale climate dynamics.
Indian Textiles at Mozambique Island in the Mid-Eighteenth Century
A comprehensive analysis of nearly eighty Indian cotton cloth types imported to Mozambique Island in the 1750s reveals a diverse and intricate textile trade network in the western Indian Ocean. By leveraging archival and literary sources, this study identifies and categorizes these textiles based on provenance, design, and price, providing valuable insights into the economic and cultural exchanges of the period. The research highlights the significance of Mozambique Island as a key hub for the distribution of Indian textiles, offering a detailed snapshot of mid-eighteenth-century trade dynamics.
Limits of Acceptable Change and Heritage Management on the Island of Mozambique
Heritage conservation often prioritizes curbing change, but this approach can overlook user needs and limit local acceptance. A study on the Island of Mozambique demonstrates that the 'Limits of Acceptable Change' (LAC) framework, when thoughtfully integrated into institutional planning, can positively influence heritage management in dynamic political, social, and environmental contexts. By embracing the potential of change, LAC enhances heritage conservation efforts while improving local engagement—a critical factor in governing urban Africa. The research highlights the importance of balancing preservation with adaptability to foster sustainable heritage management.
Mozambique Island, Cape Town and the Organisation of the Slave Trade in the South-West Indian Ocean, c.1797–1807
Around the turn of the 19th century, Mozambique Island emerged as a pivotal hub for the slave trade in the South-West Indian Ocean, transitioning from French merchant dominance to a cosmopolitan network of traders. These merchants developed sophisticated strategies to fund and operate slave ships, forging extensive trade links across the western Indian Ocean and south Atlantic. The study highlights the critical role of Cape Town merchants, who both serviced slave ships and launched their own expeditions, while also examining the long-term impacts of the trade's piecemeal abolition and Brazil's growing dominance on regional dynamics.
Nest Site Selection of Loggerhead and Leatherback Sea Turtles at the Eastern Coast of Inhaca Island, Mozambique
Loggerhead and leatherback sea turtles exhibit distinct nest site preferences on Inhaca Island, Mozambique. Loggerheads distribute nests more evenly across the eastern coast, with higher concentrations at the northernmost section, while leatherbacks concentrate nesting in central areas. Beach height significantly influences loggerhead nest density (r = 0.309, P < 0.01), whereas fin grain particles (0.125 mm) and organic content are critical for leatherback nest selection (r = 0.399, P < 0.01; r = 0.218, P < 0.05). The study analyzed six nesting seasons using satellite imagery to assess beach features correlated with nest site selection, revealing species-specific environmental preferences that may impact offspring survival and adult fitness.
The Advent and Schisms of Sufi Orders in Mozambique, 1896–1964
Sufi orders, particularly the Shadhuliyya and Qadiriyya, experienced significant expansion among local Muslims in Mozambique during the colonial era (1896–1964), leading to the formation of eight autonomous branches. This study reveals that their growth was driven by historical context and internal schisms, while Portuguese colonial officials only began closely monitoring Sufism late in the period due to its role in the independence struggle. The research combines archival work from Mozambique and Portugal with fieldwork across key sites, including Mozambique Island, Angoche, Nampula, Pemba, and Maputo, offering a rare in-depth look at Sufi identity and rituals in the region.
Eating and Drinking at the Royal Hospital of Mozambique Island: Medicine and Diet Change between the end of the 18th and the early 19th century
European medical discourse significantly influenced hospital diets on Mozambique Island between the late 18th and early 19th centuries, leading to the exclusion of locally traditional dishes. The study reveals how culinary traditions from Indian, Portuguese, and African origins were integrated into the Royal Hospital's diet but were later reshaped by European medical practices. This shift reflects broader changes in colonial-era medical discourse and its impact on dietary customs across East Africa. The research approach combines historical analysis with culinary anthropology to trace these transformations, offering insights into the intersection of medicine, culture, and colonization.
Pygmy chameleons of the Rhampholeon platyceps compex (Squamata: Chamaeleonidae): Description of four new species from isolated ‘sky islands’ of northern Mozambique
A groundbreaking study identifies four new species of pygmy chameleons (Rhampholeon) from isolated 'sky islands' in northern Mozambique, significantly expanding the known biodiversity of the region. These discoveries—Rhampholeon maspictus, Rhampholeon nebulauctor, Rhampholeon tilburyi, and Rhampholeon bruessoworum—are supported by morphological and phylogenetic analyses using mitochondrial and nuclear markers. The research clarifies taxonomic confusion around the Rhampholeon platyceps complex, confirming its endemism to the Mulanje massif in southern Malawi while reassigning historical records. Additionally, it resolves the synonymy of Brookesia platyceps carri with Rhampholeon platyceps. The study also sheds light on the evolutionary relationships between Mozambican and southern Malawi chameleons, linking them to species from Tanzania and Malawi within the subgenus Rhinodigitum.
Reproductive biology and genetic diversity of the green turtle (Chelonia mydas) in Vamizi island, Mozambique
A small but resilient population of green turtles (Chelonia mydas) nesting on Vamizi Island, Mozambique, shows signs of behavioral plasticity and genetic diversity despite threats from human activity and climate change. Over an eight-year study (2003–2010), researchers documented high hatching (88.5%) and emergence success rates (84.5%), along with 11 distinct mitochondrial DNA haplotypes—seven of which were newly identified. However, the population exhibited a decline in nesting female size, shorter incubation periods, and increased nest flooding on east- and south-facing beaches, suggesting heightened vulnerability to environmental shifts. The study highlights the need for enhanced conservation efforts, particularly as Vamizi may be considered for UNESCO World Heritage recognition due to its potential Outstanding Universal Value.
Slavery, Indenture and Migrant Labour: Maritime Immigration from Mozambique to the Cape, c.1780–1880
From the late 18th to the mid-19th century, Mozambique became a pivotal hub for maritime immigration to the Cape, transitioning from slavery to indentured and migrant labor systems. The study reveals that while international efforts curbed forced immigration by 1818, the demand for labor in Brazil and the Mascarenes sustained a thriving trade, reshaping labor dynamics at the Cape. By the 1860s, pressure shifted toward ending slavery itself, leading to the emergence of contracted migrant labor—mirroring earlier coercive systems. This shift had lasting consequences on South African labor relations, illustrating how historical migration patterns continue to influence social structures.
A new species of Lygodactylus (Squamata: Gekkonidae) endemic to Mount Namuli, an isolated ‘sky island’ of northern Mozambique
Researchers have identified a new species of dwarf gecko, Lygodactylus, endemic to Mount Namuli in northern Mozambique. This discovery highlights the unique biodiversity of the island's 'sky island' ecosystem and its genetic divergence from related species, such as the King Dwarf Gecko (Lygodactylus rex) found on Mount Mulanje in Malawi. The study employed morphological and genetic analyses to distinguish this new species, emphasizing its significance for conservation efforts in the Afromontane archipelago. This finding further underscores the historical biogeographic connections between Mount Namuli and other inselbergs in the region, contributing to a growing body of evidence that prioritizes Mount Namuli as a critical area for biodiversity protection.
Orogen styles in the East African Orogen: A review of the Neoproterozoic to Cambrian tectonic evolution
The East African Orogen, spanning from Israel to Mozambique and Madagascar, is the world's largest Neoproterozoic to Cambrian orogenic complex. This study reveals distinct phases of orogeny between 850 and 550 million years ago (Ma), culminating in the closure of the Mozambique Ocean around 620 Ma during the East African Orogeny. Post-orogenic extension, interpreted as resulting from lithospheric delamination, occurred diachronously between 600-480 Ma. The orogen exhibits varied styles: an accretion-type orogen in the Arabian-Nubian Shield, a hot-to-ultra-hot orogen in the Eastern Granulite-Cabo Delgado Nappe Complex, and a Himalayan-type orogen in Tanzania and Madagascar. These findings highlight the complex tectonic evolution of the region, shaped by different geodynamic settings.
The Diversity and Biogeography of Western Indian Ocean Reef-Building Corals
A core region of high coral diversity and connectivity exists in the northern Mozambique Channel, driven by unique oceanographic conditions. This study reveals that reef-building coral species richness decreases radially from this central area, challenging the notion of a distinction between mainland and island fauna. Instead, diversity patterns align with primary oceanographic drivers, including the South Equatorial Current, which maintains high diversity in the northern Mozambique Channel and exports it to surrounding regions. The Chagos archipelago was found to be more closely related to the Western Indian Ocean (WIO) than to the Maldives, India, or Sri Lanka, based on hard coral data analysis. The research sampled 21 locations between 2002 and 2011, using SCUBA diving and underwater digital photographs for species identification, with cluster analysis and multi-dimensional scaling applied to presence/absence data.
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