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Impacts of land-use...
Impacts of land-use change and urban development on tropical seagrass carbon sinks
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- Dahl, Martin (author)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,School of Natural Sciences, Technology and Environmental Studies, Södertörn University, Huddinge, Sweden,Seagrass Ecology & Physiology
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- Ismail, Rashid O., 1986- (author)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Institute of Marine Sciences, University of Dar es Salaam, Tanzania,Seagrass Ecology & Physiology
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- Braun, Sara (author)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik
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- Masqué, Pere (author)
- School of Science and Centre for Marine Ecosystems Research, Edith Cowan University, Joondalup, Western Australia, Australia,International Atomic Energy, Principality of Monaco, Monaco
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- Lavery, Paul (author)
- School of Science and Centre for Marine Ecosystems Research, Edith Cowan University, Joondalup, Western Australia, Australia
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- Gullström, Martin (author)
- School of Natural Sciences, Technology and Environmental Studies, Södertörn University, Huddinge, Sweden,Seagrass Ecology & Physiology
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- Arias-Ortiz, Ariane (author)
- Institute of Marine Sciences, University of California Santa Cruz, California, USA,Ecosystem Science Division, Department of Environmental Science, Policy and Management, University of California, Berkeley, California, USA
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- Asplund, Maria E. (author)
- Department of Biological and Environmental Sciences, University of Gothenburg, Kristineberg, Fiskebäckskil, Sweden,Seagrass Ecology & Physiology
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- Garbaras, Andrius (author)
- Center for Physical Sciences and Technology, Vilnius, Lithuania
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- Lyimo, Liberatus D. (author)
- Department of Crop Science and Horticulture. Sokoine University of Agriculture, Morogoro Tanzania,Seagrass Ecology & Physiology
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- Mtolera, Matern S.P. (author)
- Institute of Marine Sciences (IMS), University of Dar es Salaam, Zanzibar, Tanzania
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- Serrano, Oscar (author)
- School of Science and Centre for Marine Ecosystems Research, Edith Cowan University, Joondalup, Western Australia, Australia,Centro de Estudios Avanzados de Blanes, Consejo Superior de Investigaciones Científicas (CEAB-CSIC), Blanes, Spain
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- Webster, Chanelle (author)
- School of Science and Centre for Marine Ecosystems Research, Edith Cowan University, Joondalup, Western Australia, Australia
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- Björk, Mats (author)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Seagrass Ecology & Physiology
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(creator_code:org_t)
- English.
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
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- Seagrass meadows store significant carbon stocks at a global scale, but land-use change and anthropogenic activities can alter the natural process of organic carbon (Corg) accumulation. Here, we assessed the carbon accumulation history of two seagrass meadows in Zanzibar (Tanzania) that experienced different degrees of disturbance. The meadow at Stone Town has been highly exposed to urban development during the 20th century, while the Mbweni meadow is located in an area with relatively low impacts but historical clearing of adjacent mangroves. The results showed that the two sites had similar sedimentary Corg accumulation rates (22–25 g m-2 yr-1) since the 1940s, while during the last two decades (~1998 until 2018) they exhibited 24–30% higher accumulation of Corg, which was linked to shifts in Corg sources. The increase in the δ13C isotopic signature of sedimentary Corg (towards a higher seagrass contribution) at the Stone Town site since 1998 points to improved seagrass meadow conditions and Corg accumulation capacity of the meadow after the relocation of a major sewage outlet in the mid–1990s. In contrast, the decrease in the δ13C signatures of sediment Corg in the Mbweni meadow since the early 2010s was likely linked to Corg transport from mangrove/terrestrial material run-off following the mangrove deforestation. This study exemplifies two different pathways by which land-based human activities can alter the carbon storage capacity of seagrass meadows (i.e. sewage waste management and mangrove deforestation) and showcases opportunities for management of vegetated coastal Corg sinks
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Keyword
- Blue carbon
- carbon accumulation rates
- coastal transformation
- seagrass-mangrove connectivity
- anthropogenic impacts
- global change
- Marine Geoscience
- marin geovetenskap
- Biogeochemistry
- biogeokemi
- Marine Ecology
- marin ekologi
- sedimentologi
- Sedimentology
- Plant Ecology
- växtekologi
- Systems Ecology
- systemekologi
Publication and Content Type
- vet (subject category)
- ovr (subject category)
To the university's database
- By the author/editor
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Dahl, Martin
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Ismail, Rashid O ...
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Braun, Sara
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Masqué, Pere
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Lavery, Paul
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Gullström, Marti ...
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show more...
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Arias-Ortiz, Ari ...
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Asplund, Maria E ...
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Garbaras, Andriu ...
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Lyimo, Liberatus ...
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Mtolera, Matern ...
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Serrano, Oscar
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Webster, Chanell ...
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Björk, Mats
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Environmental Sc ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Botany
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Climate Research
- By the university
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Stockholm University