scholarly journals Predicting the impacts of sea level rise in sea turtle nesting habitat on Bioko Island, Equatorial Guinea

2019 ◽  
Author(s):  
Callie A. Veelenturf ◽  
Elizabeth M. Sinclair ◽  
Frank V. Paladino ◽  
Shaya Honarvar
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Sea Level ◽  
Sea Turtle ◽  
Equatorial Guinea ◽  
Nesting Habitat ◽  
Intergovernmental Panel ◽  
Bioko Island ◽  
The Government ◽  
Global Sea Level

AbstractSea level is expected to rise 44 to 74 cm by the year 2100, which may have critical, previously un-investigated implications for sea turtle nesting habitat on Bioko Island, Equatorial Guinea. This study investigates how nesting habitat will likely be lost and altered with various increases in sea level, using global sea level rise (SLR) predictions from the Intergovernmental Panel on Climate Change. Beach profiling datasets from Bioko’s five southern nesting beaches were used in GIS to create models to estimate habitat loss with predicted increases in sea level by years 2046-2065 and 2081-2100. The models indicate that an average of 62% of Bioko’s current nesting habitat could be lost by 2046-2065 and 87% by the years 2081-2100. Beach D is predicted to be the least vulnerable to increases in sea level. Erosion and tall vegetation berms have been documented on Beaches A and B, causing green turtles to nest uncharacteristically in front of the vegetation line. Development plans are currently underway for Beach D. With Beach D being the least susceptible to future increases in sea level, development and anthropogenic encroachment here would be especially detrimental to nesting turtle populations. Identified habitat sensitivities to SLR will be used to inform the government of Equatorial Guinea to consider the vulnerability of their resident turtle populations and projected climate change implications when planning for future development. To our knowledge this is the first study to predict the impacts of SLR on sea turtle nesting habitat in Africa.

scholarly journals Predicting the impacts of sea level rise in sea turtle nesting habitat on Bioko Island, Equatorial Guinea

PLoS ONE ◽  
2020 ◽  
Vol 15 (7) ◽  
pp. e0222251
Author(s):  
Callie A. Veelenturf ◽  
Elizabeth M. Sinclair ◽  
Frank V. Paladino ◽  
Shaya Honarvar
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Sea Turtle ◽  
Equatorial Guinea ◽  
Nesting Habitat ◽  
Bioko Island

scholarly journals Lost Material Stock in Buildings due to Sea Level Rise from Global Warming: The Case of Fiji Islands

2020 ◽  
Vol 12 (3) ◽  
pp. 834 ◽  
Author(s):  
Simon Merschroth ◽  
Alessio Miatto ◽  
Steffi Weyand ◽  
Hiroki Tanikawa ◽  
Liselotte Schebek
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Sea Level ◽  
Construction Material ◽  
Small Island ◽  
Intergovernmental Panel ◽  
Fiji Islands ◽  
The Republic ◽  
Global Sea Level

This study developed a methodology to estimate the amount of construction material in coastal buildings which are lost due to climate change-induced sea level rise. The Republic of Fiji was chosen as a case study; sea level rise is based on predictions by the Intergovernmental Panel on Climate Change for the years 2050 and 2100. This study combines the concept of a geographic information system based digital inundation analysis with the concept of a material stock analysis. The findings show that about 4.5% of all existing buildings on Fiji will be inundated by 2050 because of an expected global sea level rise of 0.22 m (scenario 1) and 6.2% by 2100 for a sea level rise of 0.63 m (scenario 2). The number of buildings inundated by 2050 is equivalent to 40% of the average number of new constructed buildings in Fiji Islands in a single year. Overall, the amount of materials present in buildings which will be inundated by 2050 is 900,000 metric tons (815,650 metric tons of concrete, 52,100 metric tons of timber, and 31,680 metric tons of steel). By 2100, this amount is expected to grow to 1,151,000 metric tons (1,130,160 metric tons of concrete, 69,760 metric tons of timber, and 51,320 metric tons of steel). The results shall contribute in enhancing urban planning, climate change adaptation strategies, and the estimation of future demolition flows in small island developing states.

scholarly journals Greenland ice sheet contribution to sea level rise during the last interglacial period: a modelling study driven and constrained by ice core data

2013 ◽  
Vol 9 (1) ◽  
pp. 353-366 ◽  
Author(s):  
A. Quiquet ◽  
C. Ritz ◽  
H. J. Punge ◽  
D. Salas y Mélia
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Ice Core ◽  
Ice Sheet ◽  
Greenland Ice Sheet ◽  
Interglacial Period ◽  
Last Interglacial ◽  
Intergovernmental Panel ◽  
Orbital Configuration ◽  
Global Sea Level

Abstract. As pointed out by the forth assessment report of the Intergovernmental Panel on Climate Change, IPCC-AR4 (Meehl et al., 2007), the contribution of the two major ice sheets, Antarctica and Greenland, to global sea level rise, is a subject of key importance for the scientific community. By the end of the next century, a 3–5 °C warming is expected in Greenland. Similar temperatures in this region were reached during the last interglacial (LIG) period, 130–115 ka BP, due to a change in orbital configuration rather than to an anthropogenic forcing. Ice core evidence suggests that the Greenland ice sheet (GIS) survived this warm period, but great uncertainties remain about the total Greenland ice reduction during the LIG. Here we perform long-term simulations of the GIS using an improved ice sheet model. Both the methodologies chosen to reconstruct palaeoclimate and to calibrate the model are strongly based on proxy data. We suggest a relatively low contribution to LIG sea level rise from Greenland melting, ranging from 0.7 to 1.5 m of sea level equivalent, contrasting with previous studies. Our results suggest an important contribution of the Antarctic ice sheet to the LIG highstand.

scholarly journals Rising Sea Level, Receding Boundaries and Freezing Baselines in a Warming Climate

2019 ◽  
pp. 1-7
Author(s):  
Emojong Amai Mercy ◽  
Eliud Garry Michura
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Sea Level ◽  
Future Climate Change ◽  
Maritime Boundary ◽  
Climate Change Effect ◽  
Global Sea Level ◽  
Comprehensive Framework ◽  
Maritime Boundary Delimitation ◽  
International Boundaries

This paper discusses the less publicised but far from less significant, an issue of how the international community’s approach to maritime boundary delimitation will be impacted by climate change resulting in sea level rise with coastal lands submerging affecting the international boundaries and impacting on biodiversity and human survival in the future. The climate change effect is already creating pressure on international law regardless of the direction that the law of the sea takes in remedying this dilemma. It is quite apparent that global disputes and conflicts are arising and solutions are needed urgently. The climate change and the consequent global sea level rise are widely touted to submerge islands and coastlines without discrimination. The international community has been relatively slow to react to what could pose an unprecedented threat to human civilisation.  The policies that have been applied have arguably been reactive and not proactive.  In future climate change may develop other by-products which may not be understood at this moment and may require a proactive approach. Further discussion of the merits of the potential paths is ideal in ensuring that appropriate and well thought-out resolutions are negotiated. Regardless of the outcome, the thorough debate is required to ensure the correct decision is made and that the balancing act between fulfilling states' interests and achieving a meaningful result does not become detrimental to the solidity and the enforceability of the outcome. There is a need to establish a comprehensive framework for ocean governance for management and long-term development and sustainability.

Predicting the Impact of Sea-Level Rise on Caribbean Sea Turtle Nesting Habitat

2005 ◽  
Vol 19 (2) ◽  
pp. 482-491 ◽  
Author(s):  
MARIANNE R. FISH ◽  
ISABELLE M. COTE ◽  
JENNIFER A. GILL ◽  
ANDREW P. JONES ◽  
SASKIA RENSHOFF ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Caribbean Sea ◽  
Sea Turtle ◽  
Nesting Habitat ◽  
The Impact

scholarly journals Climate Change Impact in the Ria de Aveiro Lagoon Ecosystem: A Case Study

2019 ◽  
Vol 7 (10) ◽  
pp. 352 ◽  
Author(s):  
Lopes ◽  
Lopes ◽  
Dias
Keyword(s):  
Climate Change ◽  
Water Temperature ◽  
Sea Level Rise ◽  
Sea Level ◽  
Inorganic Nitrogen ◽  
Nitrogen Concentration ◽  
Ria De Aveiro ◽  
Global Sea Level ◽  
The Impact ◽  
Aveiro Lagoon

Climate change and global sea-level rise are major issues of the 21st century. The main goal of this study is to assess the physical and biogeochemical status of the Ria de Aveiro lagoon (Portugal) under future climate scenarios, using a coupled physical/ eutrophication model. The impact on the lagoon ecosystem status of the mean sea level rise (MSLR), the amplitude rise of the M2 tidal constituent (M2R), the changes in the river discharge, and the rising of the air temperature was investigated. Under MSLR and M2R, the results point to an overall salinity increase and water temperature decrease, revealing ocean water dominance. The main lagoon areas presented salinity values close to those of the ocean waters (~34 PSU), while a high range of salinity was presented for the river and the far end areas (20–34 PSU). The water temperature showed a decrease of approximately 0.5–1.5 °C. The responses of the biogeochemical variables reflect the increase of the oceanic inflow (transparent and nutrient-poor water) or the reduction of the river flows (nutrient-rich waters). The results evidenced, under the scenarios, an overall decreasing of the inorganic nitrogen concentration and the carbon phytoplankton concentrations. A warm climate, although increasing the water temperature, does not seem to affect the lagoon’s main status, at least in the frame of the model used in the study.

scholarly journals Adaptive Capacity Mapping of Semarang Offshore Territory by the Increasing of Water Level and Climate Change

2013 ◽  
Vol 27 (1) ◽  
pp. 81
Author(s):  
Ifan Ridlo Suhelm
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Adaptive Capacity ◽  
Sea Level ◽  
Land Subsidence ◽  
Educational Background ◽  
Intergovernmental Panel ◽  
Two Factors ◽  
The Face ◽  
The Village

Tidal inundation, flood and land subsidence are the problems faced by Semarang city related to climate change. Intergovernmental Panel on Climate Change (IPCC) predicted the increase of sea level rise 18-59 cm during 1990-2100 while the temperature increase 0,6°C to 4°C during the same period. The Semarang coastal city was highly vulnerable to sea level rise and it increased with two factors, topography and land subsidence. The purpose of this study was to map the adaptive capacity of coastal areas in the face of the threat of disasters caused by climate change. The parameters used are Network Number, Employee based educational background, Source Main Livelihoods, Health Facilities, and Infrastructure Road. Adaptive capacity of regions classified into 3 (three) classes, namely low, medium and high. The results of the study showed that most of the coastal area of Semarang have adaptive capacities ranging from low to moderate, while the village with low capacity totaling 58 villages (58.62%) of the total coastal district in the city of Semarang.

scholarly journals Assessment of the Coastal Vulnerability to the Ongoing Sea Level Rise for the Exquisite Rhodes Island (SE Aegean Sea, Greece)

Water ◽  
2021 ◽  
Vol 13 (16) ◽  
pp. 2169
Author(s):  
Dimitrios Vandarakis ◽  
Ioannis P. Panagiotopoulos ◽  
Vassiliki Loukaidi ◽  
Georgios-Angelos Hatiris ◽  
Paraskevi Drakopoulou ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Private Property ◽  
Aegean Sea ◽  
Vulnerability Index ◽  
Coastal Vulnerability ◽  
Intergovernmental Panel ◽  
Physical Impact ◽  
Global Sea Level ◽  
Natural Losses

The foreseeable acceleration of global sea level rise could potentially pose a major threat to the natural charm and functional integrity of the world-renowned tourist coastal attractions of Rhodes Island, as a result of the anticipated increasing frequency of flooding and erosion events. Hence, this study aims to determine the most vulnerable segments (in terms of physical impact) of the Rhodes coastline through the widely accepted coastal vulnerability index (CVI), applying a combination of well-known, broadly used approaches and methods. The frequency distribution of the current CVI along the island’s coastline suggests a rather worrying high to very high vulnerability of 40%. In addition, a CVI projection to the end of the 21st century (based on the Intergovernmental Panel on Climate Change predictive scenarios) indicates an enhancement of the total vulnerability by 48%, mainly focused on the majority of the western coastline. Hence, a considerable number of popular coastal destinations in the island shall remain under unignorable threat and, therefore, coastal managers and decision-makers need to hatch an integrated plan to minimize economic and natural losses, private property damage and tourism infrastructure deterioration from flooding and erosion episodes, which will most likely be intensified in the future.

scholarly journals Future sea level rise constrained by observations and long-term commitment

2016 ◽  
Vol 113 (10) ◽  
pp. 2597-2602 ◽  
Author(s):  
Matthias Mengel ◽  
Anders Levermann ◽  
Katja Frieler ◽  
Alexander Robinson ◽  
Ben Marzeion ◽  
...  
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Greenhouse Gas ◽  
Sea Level ◽  
Past Century ◽  
Intergovernmental Panel ◽  
Adaptation Measures ◽  
Equilibrium Response ◽  
Semiempirical Models

Sea level has been steadily rising over the past century, predominantly due to anthropogenic climate change. The rate of sea level rise will keep increasing with continued global warming, and, even if temperatures are stabilized through the phasing out of greenhouse gas emissions, sea level is still expected to rise for centuries. This will affect coastal areas worldwide, and robust projections are needed to assess mitigation options and guide adaptation measures. Here we combine the equilibrium response of the main sea level rise contributions with their last century's observed contribution to constrain projections of future sea level rise. Our model is calibrated to a set of observations for each contribution, and the observational and climate uncertainties are combined to produce uncertainty ranges for 21st century sea level rise. We project anthropogenic sea level rise of 28–56 cm, 37–77 cm, and 57–131 cm in 2100 for the greenhouse gas concentration scenarios RCP26, RCP45, and RCP85, respectively. Our uncertainty ranges for total sea level rise overlap with the process-based estimates of the Intergovernmental Panel on Climate Change. The “constrained extrapolation” approach generalizes earlier global semiempirical models and may therefore lead to a better understanding of the discrepancies with process-based projections.

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