Coastal management and sea-level rise

Pethick, John

doi:10.1016/s0341-8162(00)00143-0

Cited by 141 publications

(74 citation statements)

References 6 publications

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“…These classifications are useful since they qualitatively weight the role of tides, and consequently the tidal energy controlling the coastal processes, providing a basis for coastal management. This is particularly relevant especially when one considers the scenarios of sea-level rise (e.g., Pethick 2001).…”

Section: Discussionmentioning

confidence: 99%

Tidal and sub-tidal sea level variability at the northern shelf of the Brazilian Northeast Region

Frota

Truccolo

Schettini

2016

An. Acad. Bras. Ciênc.

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A characterization of the sea level variability at tidal and sub-tidal frequencies at the northern shore of the Brazilian Northeast shelf for the period 2009-2011 is presented. The sea level data used was obtained from the Permanent Geodetic Tide Network from the Brazilian Institute of Geography and Statistics for the Fortaleza gauge station. Local wind data was also used to assess its effects on the low-frequency sea level variability. The variability of the sea level was investigated by classical harmonic analysis and by morphology assessment over the tidal signal. The low frequencies were obtained by low-pass filtering. The tidal range oscillated with the highest value of 3.3 m during the equinox and the lowest value of 0.7 m during the solstice. Differences between the spring and neap tides were as high as 1 m. A total of 59 tidal constituents were obtained from harmonic analysis, and the regional tide was classified as semi-diurnal pure with a form number of 0.11. An assessment of the monthly variability of the main tidal constituents (M 2 , S 2 , N 2 , O 1 , and K 1 ) indicated that the main semi-diurnal solar S 2 presented the highest variability, ranging from 0.21 to 0.41 m; it was the main element altering the form number through the years. The low frequency sea-level variability is negligible, although there is a persistent signal with an energy peak in the 10-15 day period, and it cannot be explained by the effects of local winds.

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Section: Discussionmentioning

confidence: 99%

Tidal and sub-tidal sea level variability at the northern shelf of the Brazilian Northeast Region

Frota

Truccolo

Schettini

2016

An. Acad. Bras. Ciênc.

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“…For example, ecosystem resilience, sensitivity and responses to climate change and sea-level rise are conditioned by geomorphology and soils, including changes in the stability/instability of landforms, fluxes of sediment and water and the properties of the geological substrate and soil (Gordon et al, 1998;Hansom and Angus, 2001;Pethick, 2001;Jonasson et al, 2005;Morrocco, 2005). Changes in the magnitude, frequency and duration of processes, process rates and the nature and spatial distribution of processes are likely to have significant implications for the resilience and adaptability of most ecosystems.…”

Section: Geodiversity and Climate Changementioning

confidence: 99%

Engaging with geodiversity—why it matters

Gordon

Barron

Hansom

et al. 2012

Proceedings of the Geologists' Association

127

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The Conference, 'Engaging with Geodiversity -Why it Matters', December 2010, addressed the wider relevance of geodiversity in Scotland. A key challenge is to integrate geodiversity within existing policy relating to the way we work and live, and therefore to inform better the decisions we make about a sustainable future for our environment. This will require partnership working among the geoscience, geoconservation and voluntary sectors at both national and local levels, not only to demonstrate convincingly the economic, social, cultural and environmental values and benefits of geodiversity, but also to deliver real outcomes for both people and nature. The key drivers that provide particular opportunities, as well as challenges, for the integration of geodiversity are the development of an ecosystem approach and how society responds to climate change. Addressing these will be crucial from a geoconservation perspective to develop a wider understanding of the essential environmental role played by geodiversity and for the protection of key sites, both from a policy perspective in delivering economic, social and environmental benefits, and from an academic perspective in ensuring support for geoscience. The key message -that geodiversity matters -must be communicated strongly to the highest levels of government, among key interest groups and at a local community level.

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“…In temperate East Australian streams, water residence time is expected to increase (Hobday and Lough 2011) and, coupled with an increase in air temperatures, could cause water temperatures to rise to over 30°C in summer months (Hobday and Lough 2011;Koehn et al 2011). Sea-level rise is also expected to cause ocean water to penetrate further upstream in estuaries, hence, elevating salinity levels (Pethick 2001). Therefore, it could be expected that this key predatory species may be exposed to salinities as high as 35ppt in the future, during either their juvenile phase when undergoing migrations between river systems, or when spawning in estuaries as adults.…”

Section: Introductionmentioning

confidence: 99%

Body size mediated effects of multiple abiotic stressors on the growth and social behaviour of an estuarine fish, Australian Bass (Macquaria novemaculeata)

O’Mara

Wong

2015

Environ Biol Fish

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. (2015). Body size mediated effects of multiple abiotic stressors on the growth and social behaviour of an estuarine fish, Australian Bass (Macquaria novemaculeata). Environmental Biology of Fishes, 99 (1), 95-104. Body size mediated effects of multiple abiotic stressors on the growth and social behaviour of an estuarine fish, Australian Bass (Macquaria novemaculeata) AbstractAnthropogenic climate change is expected to result in dramatic shifts in the abiotic conditions within estuaries, including an elevation of temperature and salinity levels. Even so, few studies have addressed the impacts of multiple abiotic stressors on the behaviour and life history of key estuarine species, such as those of biological and commercial importance. Here we used a cross-factored experimental design to tease apart the effects of temperature and salinity on intraspecific aggression and growth rates of a native estuarine fish species, the Australian bass (Macquaria novemaculeata). Juvenile bass were exposed to one of four treatment conditions: 1) baseline temperature and salinity, 2) elevated temperature, 3) elevated salinity, and 4) elevated temperature and salinity. Elevated salinity increased rates of aggression, and elevated temperature decreased rates of growth, although the effects of both factors were mediated by the body size of individual bass. These results therefore highlight complex and variable effects of abiotic stressors and body size, emphasising the importance of considering individual-level attributes when evaluating the impacts of climate change on estuarine fishes. BODY SIZE MEDIATED EFFECTS OF MULTIPLE ABIOTIC STRESSORS ON THE GROWTH AND SOCIAL BEHAVIOUR OF AN ESTUARINE FISH, AUSTRALIAN BASS (MACQUARIA NOVEMACULEATA) Authors ABSRACTAnthropogenic climate change is expected to result in dramatic shifts in the abiotic conditions within estuaries, including an elevation of temperature and salinity levels. Even so, few studies have addressed the impacts of multiple abiotic stressors on the behaviour and life history of key estuarine species, such as those of biological and commercial importance. Here we used a cross-factored experimental design to tease apart the effects of temperature and salinity on intraspecific aggression and growth rates of a native estuarine fish species, the Australian bass (Macquaria novemaculeata). Juvenile bass were exposed to one of four treatment conditions: 1) baseline temperature and salinity, 2) elevated temperature, 3) elevated salinity, and 4) elevated temperature and salinity. Elevated salinity increased rates of aggression, and elevated temperature decreased rates of growth, although the effects of both factors were mediated by the body size of individual bass. These results therefore highlight complex and variable effects of abiotic stressors and body size, emphasising the importance of considering individual-level attributes when evaluating the impacts of climate change on estuarine fishes.

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Coastal management and sea-level rise

Cited by 141 publications

References 6 publications

Tidal and sub-tidal sea level variability at the northern shelf of the Brazilian Northeast Region

Tidal and sub-tidal sea level variability at the northern shelf of the Brazilian Northeast Region

Engaging with geodiversity—why it matters

Body size mediated effects of multiple abiotic stressors on the growth and social behaviour of an estuarine fish, Australian Bass (Macquaria novemaculeata)

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