Physical Geography of the Gulf of Guinea Oceanic Islands

Ceríaco, Luis M. P.; Santos, Bruna S.; Lima, Ricardo F. de; Bell, Rayna C.; Norder, Sietze J.; Melo, Martim

doi:10.1007/978-3-031-06153-0_2

Cited by 15 publications

(23 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Section one starts with an outline of the physical geography, geological history, climate, and sea level evolution of the study area, providing also its political boundaries and administrative divisions (Chap. 2; Ceríaco et al 2022a). This is followed by a revision of the classification and cartography of the terrestrial ecosystems (Chap.…”

Section: Book Structurementioning

confidence: 99%

Biodiversity in the Gulf of Guinea Oceanic Islands: A Synthesis

Ceríaco

Lima

Bell

et al. 2022

Biodiversity of the Gulf of Guinea Oceanic Islands

View full text Add to dashboard Cite

The Gulf of Guinea oceanic islands (Príncipe, São Tomé, and Annobón) are among the most endemic-rich regions of the planet. Historical scientific studies of the islands’ unique biodiversity are scattered in a variety of publications, many of which are difficult to access. More recently, there has been a growing interest in the islands, which is reflected in a burst of new studies, reports, and ongoing projects. Here we aim to provide an updated and comprehensive synthesis, covering all the key information and references on the biodiversity of these islands. The goal of the book is to be a comprehensive reference for students, researchers, and conservationists dedicated to the study and preservation of this unique biodiversity. It also intends to serve as a basis for local stakeholders to make informed decisions, namely regarding conservation actions. The book is divided into three main sections: (1) a general overview of the islands and their biodiversity, including aspects of natural and human history (six chapters); (2) detailed accounts on different taxonomic groups (16 chapters); and (3) the conservation, environmental education, and research challenges that lie ahead (three chapters).

show abstract

Section: Book Structurementioning

confidence: 99%

Biodiversity in the Gulf of Guinea Oceanic Islands: A Synthesis

Ceríaco

Lima

Bell

et al. 2022

Biodiversity of the Gulf of Guinea Oceanic Islands

View full text Add to dashboard Cite

show abstract

“…Streams and Rivers (Fig. 17.1, 8): The hydrographic structure of the GGOI is radial, from the central mountains to the shore, resulting in numerous streams and small rivers (up to 27 km length) (e.g., in São Tomé: Ió Grande, Caué, Mussacavu, Quija, Rio do Ouro, Contador; in Príncipe: Rio Papagaio; in Annobón: A Bobo; see Ceríaco et al 2022a) or crater-lakes (e.g., in São Tomé: Lagoa Amélia; in Annobón: Lago A Pot). The river network is well distributed around the islands, entering the sea by creating small estuarine habitats (12 mangroves in São Tomé and 3 in Príncipe) or small waterfalls or cascades.…”

Section: Major Aquatic Ecosystems In the Gulf Of Guinea Oceanic Islandsmentioning

confidence: 99%

“…The northern part of the SEC borders the GC and flows westward. The Equatorial Undercurrent (EUC) also flows eastward below the SEC (Djakouré et al 2014;Herbert et al 2016;Houndegnonto et al 2021; see also Ceríaco et al 2022a). A Guinea Undercurrent (GUC) is also present, flowing eastward, in deeper water along the coast.…”

Section: Introductionmentioning

confidence: 98%

“…The GGOI are influenced by all these currents in the "southern alternance region," dominated by strong seasonal contrasts and with influxes of equatorial upwelling (Le Loeuff and Cosel 1998). Water salinity, temperature, and turbidity are also influenced by major freshwater river discharges (Congo and Niger basins) and resulting plumes (Alory et al 2021;Houndegnonto et al 2021;Ceríaco et al 2022a). The combination of these characteristics, along with the upwelling and high biological productivity, contribute to the occurrence of a spectacular fish diversity.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Fishes of the Gulf of Guinea Oceanic Islands

Costa

Maia

Almeida

2022

Biodiversity of the Gulf of Guinea Oceanic Islands

View full text Add to dashboard Cite

This chapter reviews the current knowledge of the marine (including deep-sea species) and freshwater fishes of the Gulf of Guinea oceanic islands. Some biogeographic and conservation considerations are also presented. A total of 1045 species are likely present in the region, including 107 Elasmobranchii (37 confirmed, 65 potential, and 5 erroneous), one confirmed Holocephali, and 937 Actinopteri species (515 confirmed, 385 potential, 32 erroneous, and 5 questionable). Most of the coastal species are shared with the surrounding African continental shelf, while several species are amphi-Atlantic (present in both sides of the Atlantic Ocean), and some species have sister-species in the western Atlantic. A total of 15 species are endemic to the region, and 2 are introduced. Further studies are still needed to better understand the ichthyofauna of the Gulf of Guinea oceanic islands and help policymakers better define conservation and protection plans.

show abstract

“…Among the islands, mist forests are exclusive to São Tomé and hold especially high numbers of endemic and threatened plant species (Dauby et al 2022;Stévart et al 2022). Being mountainous, the islands function as ecological and evolutionary refugia, offering a wide variety of stable environments whose climates are buffered by the ocean (Ceríaco et al 2022a). Príncipe and São Tomé also have a few mangrove areas, which despite their small size provide important ecosystem services (Afonso et al 2021;Cravo 2021).…”

Section: Introductionmentioning

confidence: 99%

Biodiversity Conservation in the Gulf of Guinea Oceanic Islands: Recent Progress, Ongoing Challenges, and Future Directions

Lima

Deffontaines

Madruga

et al. 2022

Biodiversity of the Gulf of Guinea Oceanic Islands

View full text Add to dashboard Cite

The biodiversity of the oceanic islands of the Gulf of Guinea is valued internationally for its uniqueness and locally for its contribution to human welfare, but it is under growing anthropogenic pressure. We provide an overview of recent progress, ongoing challenges, and future directions for terrestrial and marine conservation. The islands were colonized in the late fifteenth century and have since relied heavily on international markets. Nevertheless, the livelihoods of many islanders depend directly on local natural resources, and growing human populations and economies are intensifying the use of these resources, including timber, land, and fisheries. Here we summarize conservation initiatives on the islands, including pivotal projects and achievements, as well as the rise of civil society and governmental engagement. We also review species and site-based conservation priorities and highlight the need for continuous updating based on ongoing research. Engagement in conservation has increased steadily in recent decades but not fast enough to counteract the growth of anthropogenic pressure on biodiversity. Fostering capacity building, environmental awareness, and research is thus urgent to ensure a thriving future for the islands, able to reconcile economic development and biodiversity conservation.

show abstract

Physical Geography of the Gulf of Guinea Oceanic Islands

Cited by 15 publications

References 48 publications

Biodiversity in the Gulf of Guinea Oceanic Islands: A Synthesis

Biodiversity in the Gulf of Guinea Oceanic Islands: A Synthesis

The Fishes of the Gulf of Guinea Oceanic Islands

Biodiversity Conservation in the Gulf of Guinea Oceanic Islands: Recent Progress, Ongoing Challenges, and Future Directions

Contact Info

Product

Resources

About