Erratum: Estuaries: A Lifeline of Ecosystem Services in the Western Indian Ocean

Diop, Salif; Scheren, Peter; Machiwa, John F.

doi:10.1007/978-3-319-25370-1_21

Cited by 7 publications

(8 citation statements)

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“…The study of SES in estuarine environments is not a new field in the WIO region (see Hamerlynck et al, 2010;Blythe, 2014;Blythe et al, 2014;Dzoga et al, 2018). Nevertheless, most published information has dealt with basin-scale impacts of economic development and agriculture on flow regimes and water resource management, downstream socio-economic effects of altered freshwater flows, or ecosystems effects in nearshore marine environments (papers in Diop et al, 2016;Fennessy et al, 2016;Duvail et al, 2017). Far fewer studies have relied on a multidisciplinary approach to individual estuaries, to provide finer detail on interlinked biophysical, natural resource and socio-economic aspects.…”

Section: Integration Of Estuarize-wio Research Papers Into a Special ...mentioning

confidence: 99%

“…Estuaries are one of the coastal areas most at risk from human activities in the WIO region (Diop et al, 2016). They are affected by localized overexploitation and degradation of coastal habitats, are vulnerable to reduced freshwater inflow resulting from upstream damming and land cover change in catchments, and to sea level rise and the increasing frequency of droughts, floods and storms brought by climate change (Kitheka and Mavuti, 2016;Mwaguni et al, 2016;Shagude, 2016;Wagner and Sallema-Mtui, 2016;Duvail et al, 2012Duvail et al, , 2017.…”

Section: Introductionmentioning

confidence: 99%

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Estuarize-WIO: A socio-ecological assessment of small-scale fisheries in estuaries of the Western Indian Ocean

Groeneveld

Hoguane²,

Kuguru³

et al. 2021

West Ind. Oc. J Mar. Sci.

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Estuaries provide unique ecosystem goods and services and have been focal points for human settlement andresource use throughout recorded history. In the Western Indian Ocean (WIO) region, the effects of human population growth, rapid economic development and climate change on estuaries threaten their ecological functioning and the sustainability of estuary-dependent livelihoods. Governance systems are ill-equipped to deal with the mounting challenges. Long-term datasets that describe estuary-scale trends are scarce, and socio-ecological interactions that support sustainable use of resources are incompletely understood. To address these gaps, the Estuarize-WIO project (2016-2019) compiled datasets on biophysical, ecological, socio-economic and fisheries aspects of selected estuaries in Mozambique (Bons Sinais), Tanzania (Ruvu) and Kenya (Tana), analysed trends per estuary, and used a socio-ecological systems (SES) framework to integrate information from multiple sources at local and regional levels. The introductory paper of this Special Issue of the Western Indian Ocean Journal of Marine Science provides regional context and reviews the relevant literature available for WIO estuaries. In succeeding papers, estuarine circulation is inferred from hydrological measurements, seasonal and decadal trends in land cover and land use are investigated using remote sensing images, household surveys are used to investigate socio-economic circumstances and resource use, and long-term catch survey data and field samples are used to describe small-scale fisheries. In the synthesis paper, a SES framework is constructed to investigate linkages and feedback loops in individual estuaries. A regionally comparative analysis across the WIO region was conducted, and recommendations were made for future research and governance. The methodological approach developed for Estuarize-WIO is well-suited to research of data poor systems with limited accessibility and research infrastructure.

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Section: Integration Of Estuarize-wio Research Papers Into a Special ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Estuarize-WIO: A socio-ecological assessment of small-scale fisheries in estuaries of the Western Indian Ocean

Groeneveld

Hoguane²,

Kuguru³

et al. 2021

West Ind. Oc. J Mar. Sci.

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“…Integration across disciplines made use of schematic representations to illustrate trends and gradients by estuary and across the region. Two sources of anthropogenic impacts on estuaries were considered throughout this study: local resource use patterns within the estuary (direct); and activities in catchments (indirect) that affect the volume, water quality and seasonality of freshwater discharged into estuaries (e.g., papers in Diop et al, 2016;Duvail et al, 2017).…”

Section: Regional Comparisonmentioning

confidence: 99%

A regional assessment of seasonal-to-decadal changes in estuarine socio-ecological systems in the Western Indian Ocean

Groeneveld

Santos²,

MacKay³

et al. 2021

West Ind. Oc. J Mar. Sci.

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Estuarine socio-ecological systems (SES) in the Western Indian Ocean (WIO) region face mounting pressures from overexploitation, habitat degradation, impacts of climate change and governance inadequacies. A regional assessment of seasonal-to-decadal change in SES of three estuaries (Bons Sinais in Mozambique, Ruvu in Tanzania and Tana in Kenya) was undertaken along 2000 km of tropical coastline (3°-18°S), using a systems-oriented approach and information collected during the Estuarize-WIO project (2016-2019). All three estuaries were open and tidal, but differed along gradients of geomorphology, annual precipitation, exposure to tropical storms, drought, sea level rise, and rural to urban development. Despite physical differences, similar marine species, mangrove assemblages, seasonality in fish-based farming systems and cultivated crops, and fishing methods were apparent across the region. Key differences were related to the scale of anthropogenic disturbance, discerned from land use / land cover (LULC) change analysis, which showed decadal increases in developed-, cultivated- and grasslands, at the expense of wetlands and forests, and seasonal transformation of wetlands to agriculture and grasslands. The three estuaries represented a gradient along urban-production-conservation dimensions, brought about by rural to urban transformation, and by freshwater and sediment diversion for economic development in upstream catchment areas. Household surveys indicated strongly seasonal livelihood strategies, with highest diversity in peri-urban settings, and reliance on different combinations of ecosystem goods and services in coastal and upstream rural settings. Estuarine fisheriesranged from unselective, low trophic-level fisheries using fine-mesh nets at the urbanized and most-disturbed Bons Sinais Estuary, to a more complex organized fishery at the least-disturbed Tana. At Ruvu, fisheries and agriculture production exit the system to distant markets. The systems-oriented approach demonstrated that human-induced processes affected WIO estuaries and dependent livelihoods more deeply than inherent physical differences. A key conclusion is that research, management and governance will benefit from regional cooperation, given the similarities of the systems and the different levels of disturbance.

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“…This is envisaged to have negative consequences to Kenya's tuna fishery. Coral reefs, mangroves, and seagrass beds that provide important fish habitat and support coastal fisheries in the WIO region are already facing unprecedented stress from warming and rising seas, acidification, coral reef bleaching, and storms resulting in a decrease in their ecosystem services and knock-on effects on the reef fisheries, demersal fish stocks, and invertebrates (Altieri et al, 2019;Hoegh-Guldberg et al, 2017;Obura et al, 2017;Diop et al, 2016;Ateweberhan et al, 2011).…”

Section: Challenges To Development Of the Bementioning

confidence: 99%

Harnessing Kenya’s Blue Economy: prospects and challenges

Rasowo

Orina

Nyonje

et al. 2020

Journal of the Indian Ocean Region

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Kenya enjoys a marine coastline of about 640 km giving a total area of territorial waters of 9700 km 2 while the EEZ is 142,400 km 2 . She further lays claim to an extended EEZ of approximately 103,320 km 2 and has 13,600 km 2 of inland waters. The government recognizes the potential of this maritime resource to boost the country's economic outlook and has made Blue Economy (BE) part of the economic pillar in its development blueprint. For effective development of the BE, Kenya needs, among other things, to: build human resource capacity through investing in marine education and training; boost marine scientific research; support the traditional industries of fisheries, aquaculture, tourism, blue biotechnology, ports and shipping; develop BE database; resolve outstanding boundary disputes; and reduce illegal unreported and unregulated fishing. The study posits that Kenya already has sector-wise experiences and assets as demonstrated by the numerous government institutions participating in the BE and is only lacking policy integration, coordination and coherence.

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Erratum: Estuaries: A Lifeline of Ecosystem Services in the Western Indian Ocean

Abstract: ERRATUMThe online version of the updated original book can be found at E1 http://dx

Cited by 7 publications

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Estuarize-WIO: A socio-ecological assessment of small-scale fisheries in estuaries of the Western Indian Ocean

Estuarize-WIO: A socio-ecological assessment of small-scale fisheries in estuaries of the Western Indian Ocean

A regional assessment of seasonal-to-decadal changes in estuarine socio-ecological systems in the Western Indian Ocean

Harnessing Kenya’s Blue Economy: prospects and challenges

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