scholarly journals Spatial models to support the management of coastal marine ecosystems: a short review of the best practices in Liguria, Italy

2013 ◽  
Vol 15 (1) ◽  
pp. 189 ◽  
Author(s):  
M. VACCHI ◽  
M. MONTEFALCONE ◽  
V. PARRAVICINI ◽  
A. ROVERE ◽  
P. VASSALLO ◽  
...  
Keyword(s):  
Human Impacts ◽  
Spatial Models ◽  
Short Review ◽  
Posidonia Oceanica ◽  
Spatial Modelling ◽  
Coastal Development ◽  
Marine Habitat ◽  
Marine Habitats ◽  
Coastal Marine ◽  
The Status

Spatial modelling is an emerging approach to the management of coastal marine habitats, as it helps understanding and predicting the results of global change. This paper reviews critically two recent examples developed in Liguria, an administrative region of NW Italy. The first example, aiming at predicting habitat status depending on pressures, provides managers with the opportunity of envisaging different scenarios for the consequences of coastal development choices. The second example defines the status of an important Mediterranean coastal marine habitat (Posidonia oceanica meadows) under natural conditions, allowing for quantifying human impacts on regressed meadows. Both modelling approaches are useful to define the targets of coastal management, and may help choosing the best management option. Well-planned and sustained monitoring is essential to model validation and improvement.

scholarly journals Thirty years after - dramatic change in the coastal marine habitats of Kos Island (Greece), 1981-2013.

2014 ◽  
Vol 15 (3) ◽  
pp. 482 ◽  
Author(s):  
C. N. BIANCHI ◽  
M. CORSINI-FOKA ◽  
C. MORRI ◽  
A. ZENETOS
Keyword(s):  
Regime Shift ◽  
Human Impacts ◽  
Rocky Reef ◽  
Multivariate Techniques ◽  
Visual Census ◽  
Biological Communities ◽  
Marine Habitats ◽  
Coastal Marine ◽  
Thermophilic Species ◽  
Available Information

Results of recent fieldwork were compared with data collected in 1981, taken as a reference condition. Surveys were conducted with the same method (time-based visual census along random paths), in the same sites, by the same people. Semi-quantitative inventories of conspicuous species were analysed by univariate and multivariate techniques. Available information on the main potential stressors indicated that a regime shift has occurred in these 30+ years: sea surface temperature rose by1-2°C, human pressure grew impressively, and invasion by several alien species took place. Consistently, a phase shift occurred in the biological communities. Of the 120 conspicuous species found in total, only 51 were common to both surveys; 31 species (‘losses’) were found in 1981 but not again in 2013, 38 (‘gains’) were found exclusively in 2013, 16 (‘winners’) increased their abundance, 8 (‘losers’) got scarcer, and 27 underwent little or no change. Gains included 7 alien, 2 nitrophilic, and 7 thermophilic species. Multivariate analysis evidenced biotic homogenisation in 2013 and huge change in rocky reef habitats. The once flourishing algal forests have disappeared to leave space to sponges and wide areas of bare substratum. This has most probably been the result of overgrazing by alien herbivorous fishes (Siganus luridus and S. rivulatus), whose establishment and spread has been favoured by seawater warming; the synergic action of local human impacts was also evidenced.

scholarly journals Experience of implementing decommunization laws in Eastern Ukraine: a Kharkiv case

2020 ◽  
Vol 10 (3) ◽  
Author(s):  
Denys Kutsenko
Keyword(s):  
Qualitative Data ◽  
Short Review ◽  
Political Elites ◽  
Historical Building ◽  
Politics Of Memory ◽  
National Legislation ◽  
Architectural Monument ◽  
The Status ◽  
The Subject ◽  
Ukrainian Society

The article deals with an instrumental use of the national legislation by the local authorities in Kharkiv, the second-largest city in Ukraine and shows how the shortcomings in the national legislation on the politics of memory can be used by the local political elites of “borderland city” in an attempt to raise the rating and/or to mobilize the electorate before the elections. Consequently, several interviews with local experts and activists were conducted in 2019, and qualitative data analysis was made for the transcribed texts as well as a short review of other papers on the subject. Also, the article shows how the local court can accelerate the process of depriving a historical building of the status of an architectural monument using decommunization laws. The study confirms the existence of serious polarization in Ukrainian society and the superficial nature of decommunization (started in 2015), which stimulates the deepening of such polarization.

scholarly journals Investing in Blue Natural Capital to Secure a Future for the Red Sea Ecosystems

2021 ◽  
Vol 7 ◽  
Author(s):  
Maha J. Cziesielski ◽  
Carlos M. Duarte ◽  
Nojood Aalismail ◽  
Yousef Al-Hafedh ◽  
Andrea Anton ◽  
...  
Keyword(s):  
Sustainable Development ◽  
Red Sea ◽  
Natural Capital ◽  
Economic Benefits ◽  
Environmental Conservation ◽  
Coastal Development ◽  
Population Pressure ◽  
Economic Losses ◽  
Seagrass Meadows ◽  
Marine Habitats

For millennia, coastal and marine ecosystems have adapted and flourished in the Red Sea’s unique environment. Surrounded by deserts on all sides, the Red Sea is subjected to high dust inputs and receives very little freshwater input, and so harbors a high salinity. Coral reefs, seagrass meadows, and mangroves flourish in this environment and provide socio-economic and environmental benefits to the bordering coastlines and countries. Interestingly, while coral reef ecosystems are currently experiencing rapid decline on a global scale, those in the Red Sea appear to be in relatively better shape. That said, they are certainly not immune to the stressors that cause degradation, such as increasing ocean temperature, acidification and pollution. In many regions, ecosystems are already severely deteriorating and are further threatened by increasing population pressure and large coastal development projects. Degradation of these marine habitats will lead to environmental costs, as well as significant economic losses. Therefore, it will result in a missed opportunity for the bordering countries to develop a sustainable blue economy and integrate innovative nature-based solutions. Recognizing that securing the Red Sea ecosystems’ future must occur in synergy with continued social and economic growth, we developed an action plan for the conservation, restoration, and growth of marine environments of the Red Sea. We then investigated the level of resources for financial and economic investment that may incentivize these activities. This study presents a set of commercially viable financial investment strategies, ecological innovations, and sustainable development opportunities, which can, if implemented strategically, help ensure long-term economic benefits while promoting environmental conservation. We make a case for investing in blue natural capital and propose a strategic development model that relies on maintaining the health of natural ecosystems to safeguard the Red Sea’s sustainable development.

Seasonal variation in coastal marine habitat use by the European shag: Insights from fine scale habitat selection modeling and diet

2017 ◽  
Vol 141 ◽  
pp. 224-236 ◽  
Author(s):  
Candice Michelot ◽  
David Pinaud ◽  
Matthieu Fortin ◽  
Philippe Maes ◽  
Benjamin Callard ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Habitat Selection ◽  
Habitat Use ◽  
Fine Scale ◽  
Marine Habitat ◽  
Coastal Marine

Design and Implementation of Robust Controllers for an Intelligent Incubation Pisciculture System

2016 ◽  
Vol 1 (1) ◽  
pp. 101
Author(s):  
D. Ganesh ◽  
S.MD. Saleem Naveed ◽  
M. Kalyan Chakravarthi
Keyword(s):  
Embedded System ◽  
Fuzzy Controller ◽  
Pi Controller ◽  
Marine Habitat ◽  
Factors Affecting ◽  
Marine Habitats ◽  
The Embedded System ◽  
Healthy Growth ◽  
Tropical Climates ◽  
And Control

Aquaculture is major occupation for the humans living at coastal areas. The fresh water cultivation of the certain species is prominent in tropical and sub-tropical climates. Here the proposed work shows the relation-ship between the growth of the certain species of marine habitats and the factors affecting their growth with respect to the medium of their living. Advancement of embedded systems in aquaculture leads to new innovations of monitoring and controlling the various parameters. Here the embedded system based application is used, through which the monitoring and controlling of the light is done with the help of LabVIEW based PI controller as well as Fuzzy controller for the effective and healthy growth of the marine habitat. The Designed controllers are energy efficient based controller for controlling the Light Source (LS) via appropriate lighting control levels. The controlling and managing of the system is based on the present light intensity with the help of virtual controller. The proposed work involves the designing and implementation of PI controller and the fuzzy controller for the real time setup to monitor and control the process for optimal and feasible solution.

COMPUTER ALGEBRA IN GENERAL RELATIVITY

2002 ◽  
Vol 17 (20) ◽  
pp. 2707-2710 ◽  
Author(s):  
M. A. H. MACCALLUM
Keyword(s):  
General Relativity ◽  
Computer Algebra ◽  
Short Review ◽  
Computer Algebra Systems ◽  
Relativity And Gravitation ◽  
The Status

This paper gives a short review of the status and applications of computer algebra systems for calculations in relativity and gravitation.

Calcified macroalgae - critical to coastal ecosystems and vulnerable to change: a review

2009 ◽  
Vol 60 (8) ◽  
pp. 787 ◽  
Author(s):  
W. A. Nelson
Keyword(s):  
Anthropogenic Activities ◽  
Three Dimensional ◽  
Euphotic Zone ◽  
Coastal Development ◽  
Functional Ecology ◽  
Present Measurement ◽  
Marine Habitats ◽  
Run Off ◽  
Coral Reef Ecosystems ◽  
Species Specific

Calcified macroalgae are distributed in marine habitats from polar to tropical latitudes and from intertidal shores to the deepest reaches of the euphotic zone. These algae play critical ecological roles including being key to a range of invertebrate recruitment processes, functioning as autogenic ecosystem engineers through provision of three-dimensional habitat structure, as well as contributing critical structural strength in coral reef ecosystems. Calcified macroalgae contribute significantly to the deposition of carbonates in coastal environments. These organisms are vulnerable to human-induced changes resulting from land and coastal development, such as altered patterns of sedimentation, nutrient enrichment through sewage and agricultural run-off, and are affected by coastal dredging and aquaculture. The consequences of increasing sea surface temperatures and fundamental changes in the carbon chemistry of seawater due to CO2 emissions from anthropogenic activities will have serious impacts on calcifying macroalgae. It is not yet understood how interactions between a range of variables acting at local and global scales will influence the viability of calcifying macroalgae and associated ecosystems. Research is urgently needed on all aspects of the taxonomy, biology and functional ecology of calcifying macroalgae. Without an understanding of the species present, measurement of change and understanding species-specific responses will not be possible.

Waterbirds as indicators of ecosystem health in the coastal marine habitats of southern Florida: 1. Selection and justification for a suite of indicator species

2014 ◽  
Vol 44 ◽  
pp. 148-163 ◽  
Author(s):  
John C. Ogden ◽  
John D. Baldwin ◽  
Oron L. Bass ◽  
Joan A. Browder ◽  
Mark I. Cook ◽  
...  
Keyword(s):  
Indicator Species ◽  
Ecosystem Health ◽  
Marine Habitats ◽  
Coastal Marine ◽  
Southern Florida
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