Decolonization in East Africa was a regional affair that required the remaking of temporal orders. The staggered independence timelines of Tanganyika, Uganda, and Kenya caused considerable consternation due to transnational solidarities and visions for East African Federation. The interminable delays of Kenyan decolonization also threatened the linked economy of the region and diluted the sovereignty of neighboring states. At issue was “liminal sovereignty,” with polities and people languishing between normative legal orders. Against expectations about self-determination, East Africans found themselves in partial control of their collective endeavors. I analyze the tactics of temporal activism by Africans who aimed to undo British control over the pacing, sequencing, and synchronicity of decolonization. The indeterminate geography of decolonization was linked to uncertain temporalities of independence which threatened to subvert self-determination. In East Africa, federation was a style of claims-making and chronopolitics intended to orchestrate the distribution of rights, resources, and authority in a new layering of sovereignty between postcolonies.

During the so-called “era decolonization” in Africa, few historical events held more salience than what is most commonly known as the Mau Mau Uprising in Kenya (which covered the period from 1952 to 1960). This article examines not only how tropes about the nature and origins of Mau Mau were and are deployed across different semiotic landscapes, but also the ways in which their operations are made manifest through practices of reading. I argue that we should consider the idea of Mau Mau—whether it be central to a text or present a mere detail—as a catalyst through which broader claims are made, especially as they relate to the nature of history and the semiotic dimensions of the events that populate it. This article shows this through conducting a “tropology” of Mau Mau, in which the suffix -ology underscores reading its tropes as a particular mode of studying it.

Roads affect wildlife in a variety of negative ways. Road ecology studies have mostly concentrated on areas in the northern hemisphere despite the potentially greater impact of roads on biodiversity in tropical habitats. Here, we examine 4 years (January 2016–December 2019) of opportunistic observations of mammalian roadkill along a road intersecting Jozani-Chwaka Bay National Park, Unguja, Zanzibar. In particular, we assess the impact of collisions on the population of an endemic primate, the Endangered Zanzibar red colobus Piliocolobus kirkii. Primates accounted for the majority of roadkill in this dataset. Monthly rainfall was not associated with roadkill frequency for mammals generally, nor for the Zanzibar red colobus. No single age–sex class of colobus was found dead more often than expected given their occurrence in the local population. The overall effect of roadkill on colobus populations in habitats fragmented by roads is unknown given the lack of accurate, long-term life history data for this species. Our findings suggest that mortality from collisions with vehicles in some groups of colobus is within the range of mortality rates other primates experience under natural predation. Unlike natural predators, however, vehicles do not kill selectively, so their impact on populations may differ. Although a comparison with historical accounts suggests that the installation of speedbumps along the road near the Park's entrance has led to a significant decrease in colobus roadkill, further actions to mitigate the impact of the road could bring substantial conservation benefits.

This article presents the first archaeological survey of the ornate Kidichi baths on Zanzibar. The baths were built either for or by Shihrazad, a wife of Zanzibar’s nineteenth-century ruler Said bin Sultan (1806–56). Laser scanning the ornate plaster stucco clarified two inscriptions, the precise meaning of which had been lost. By combining archaeological survey results with historical research and a translation of the inscriptions, a new narrative is presented in which the main protagonist is, unusually, female. Her story raises a host of questions relating to heritage, gender, religion and politics in modern-day Africa and beyond.

Conservation scientists continue to debate the strengths and weaknesses of REDD+ as an instrument to slow greenhouse gas emissions in the developing world. We propose that general positions on this debate are less helpful than drawing lessons from specific investigations into the features of individual projects that make them successful or not. Here, focusing on a site-specific REDD+ intervention in Pemba, Zanzibar (Tanzania), we examine the circumstances under which REDD+ has a chance of success, teasing out specific features of both REDD+ interventions and the socio-economic and institutional contexts that render REDD+ a potentially valuable complement to community forestry. Additionally, we highlight some unanticipated positive outcomes associated with the design features of REDD+ projects. Our broader goal is to move away from ideologically-driven debate to empirically-based identification of general conditions where REDD+ could work, and to provide policy recommendations.

The causative agent of urogenital schistosomiasis, Schistosoma haematobium, was thought to be the only schistosome species transmitted through Bulinus snails on Unguja and Pemba Island (Zanzibar, United Republic of Tanzania). For insights into the environmental risk of S. haematobium transmission on Pemba Island, malacological surveys collecting Bulinus globosus and B. nasutus, two closely related potential intermediate hosts of S. haematobium were conducted across the island in November 2016. Of 1317 B. globosus/B. nasutus collected, seven B. globosus, identified through sequencing a DNA region of the mitochondrial cytochrome oxidase subunit 1 (cox1), were observed with patent infections assumed to be S. haematobium. However, when the collected cercariae were identified through sequencing a region of the cox1 and the nuclear internal transcribed spacer (ITS1 + 2), schistosomes from five of these B. globosus collected from a single locality were in fact S. bovis. The identified presence of S. bovis raises concerns for animal health on Pemba, and complicates future transmission monitoring of S. haematobium. These results show the pertinence for not only sensitive, but also species-specific markers to be used when identifying cercariae during transmission monitoring, and also provide the first molecular confirmation for B. globosus transmitting S. bovis in East Africa.

This article takes a single moment—a court case that took place in Zanzibar in 1910—and uses it to explore the legal imaginaries that circulated around the Western Indian Ocean at the height of British imperialism. It stitches together the actions of litigants, the utterances of qadis, and the proclamations of jurists, reading them alongside the silences in the legal material itself to bring to life a world of law, mobility, and imagination. More broadly, it suggests that through the exploration of parallel but never fully intersecting legal encounters in South Arabia and East Africa that emerged from a single moment, historians might use micro-level discourses and actions to make claims about macro-level phenomena.

This paper engages in a microhistory of international law, grounded in the contests surrounding the Muscat Dhows case brought by Great Britain against France in 1905. At the heart of the case was the question of whether the French consul had the right to grant flags and navigation passes to dhows from the southern Omani port of Sur that were suspected of transporting slaves. The case became foundational to studies of the law of the sea, and the ruling is still cited in footnotes in law school textbooks. Buried in the case's proceedings, however, are a series of petitions by the dhow captains that give historians a window into the legal imaginaries of Indian Ocean mariners in an age of empire. Through a close reading of the petitions, I explore how captains located themselves within an imperial legal geography, and appropriated legal technologies—passes and flags—to help them shape the legal possibilities of a changing political and economic seascape. I argue that the claims the captains articulated and the practices they engaged in at sea reveal a maritime legal culture at work, one animated by a long history of encountering regional and global empires at sea. Their documentary practices illuminate how they engaged in and domesticated a body of international law, and illustrate how the regime manifested itself in an ocean that ran thick with legal idioms.

We present the first systematic assessment of the population, demography and distribution of the Endangered Zanzibar red colobus Piliocolobus kirkii, in Unguja in the Zanzibar archipelago, based on a survey effort of 4,725 hours. We estimate the total population comprises 5,862 individuals in 342 groups (mean group size 17.12); 3.4 times the mean of all previous estimates. We calculated a total area of occupancy of 376 km2, with 4,042 individuals living within protected areas. Mean group sizes were significantly higher within protected areas (20.57) than outside (12.80). The number of adult females was 3,179 (54.21%), with a mean of 9.29 per group, and the number of adult males was 932 (15.89%), with a mean of 2.71 per group, giving a ratio of 3.31 adult females to adult males. This ratio was significantly lower outside protected areas. The total number of infants was 958 (16.34%), with a mean of 2.80 per group, and the number of subadults/juveniles was 793 (13.52%), with a mean of 2.32 per group, giving ratios of 0.30 infants to adult females, and 0.25 subadults/juveniles to adult females. The results indicate that P. kirkii is resilient and thriving far better than assumed. However, recruitment is low and the population may be in decline, with individuals outside protected areas most at risk. We tentatively support the categorization of P. kirkii as Endangered on the IUCN Red List, argue for greater protected area status for southern Uzi, Vundwe and Mchamgamle, and discuss conservation implications for this charismatic flagship species.