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value of marine spaces

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Journal Article
Aquatic Ecosystem Health & Management (2006) 9 (1): 79–83.
Published: 01 January 2006
... and provide funds to improve sea areas health. The essential task for establishing the usage charges for marine spaces is to estimate the value of marine areas. In this study, two operative models are developed to assess the value of marine spaces and the models are applied in order to evaluate the price...
Journal Article
Aquatic Ecosystem Health & Management (2013) 16 (4): 385–394.
Published: 01 October 2013
... were recorded at different substrate types. The persistence of a well-structured macrobenthic community, including families of marine origin in the middle to lower reaches, indicates that the Ganga ecosystem is resilient enough to recover to its pristine ecological value. Copyright © AEHMS 2013...
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Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2011) 14 (3): 298–304.
Published: 01 July 2011
... on the marine environment in different ways, leading to the destruction of habitat, over-fishing, compression of the living space of the dolphins, and reduction in water exchange rate. Over-fishing affected the biodiversity in Xiamen waters, and the dolphins are now facing a serious problem: they can no longer...
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Journal Article
Aquatic Ecosystem Health & Management (2007) 10 (3): 350–357.
Published: 14 September 2007
... data set. A quantitative analysis of all existing data was undertaken to identify ecologically important areas in the Emirate, and to determine other values of the coastal areas. Abu Dhabi Emirate's marine and coastal areas were divided into a series of vertical zones. A practical scale of 50 km...
FIGURES
Journal Article
Aquatic Ecosystem Health & Management (2003) 6 (2): 205–216.
Published: 01 April 2003
... and pollution, despite gains in governance and social cohesion. Copyright © AEHMS 2003 Multiattribute biodiversity trophic stability complex causality North Sea Simcoast™ References Baud , D. , McGlade , J. M. and Ulanowicz , R. 1990 . The comparative ecology of six marine...
Journal Article
Aquatic Ecosystem Health & Management (2016) 19 (4): 468–475.
Published: 01 October 2016
... 13 C range (CR); (2) δ 15 N range (NR); (3) total area (TA), convex hull area encompassed by all species in the δ 13 C-δ 15 N bi-plot space; (4) mean distance to centroid (CD), where the centroid is the mean δ 13 C and δ 15 N value for all species in the foodweb; (5) mean nearest neighbor distance...
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Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2015) 18 (4): 424–432.
Published: 02 October 2015
... spacing, eye size, mouth length and degree of mouth opening. Parameter values are represented in schematic humanlike faces such that the values for each variable are represented by the variations of specific facial features. Each parameter is represented by a number between 0 and 1. In this study...
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Journal Article
Aquatic Ecosystem Health & Management (2021) 24 (1): 21–26.
Published: 02 January 2021
... % to the country’s GDP (FAO, 2015 ). With an EEZ of 142 400 km 2 , Kenya’s marine capture fisheries produce about 9 000 tonnes per year valued at USD 12 million. Marine finfish are highly exploited and form the bulk of the marine production, while shellfish (e.g. prawns, lobsters and crabs), molluscs (e.g. octopi...
FIGURES
Journal Article
Aquatic Ecosystem Health & Management (2006) 9 (3): 333–337.
Published: 01 September 2006
... coastal vulnerability. Subsystems Indicators Indicator value Indicator standard value Estimated value Environment Rate of marine water quality meeting standards (%) 23.1 100 a 0.7690 Natural conservation zone covering rate (%) 11.82 17 a 0.3407 Water resource per...
Journal Article
Aquatic Ecosystem Health & Management (2002) 5 (3): 307–313.
Published: 01 September 2002
... rather low densities of benthic invertebrates. Indeed, the level of total densi- ties is similar to the values obtained for the oligochaetes only in Lake Baïkal (Martin et al., 1999). Although the decrease of total densities is a common feature of ben- thic invertebrates in marine waters (Pfannkuche...
Journal Article
Aquatic Ecosystem Health & Management (2020) 23 (4): 445–452.
Published: 01 October 2020
..., and to obtain the related return period. The analysis has been conducted with different methodologies. H s values from wave hindcasting models developed at the European Center for Medium-range Weather Forecasts (ECMWF) (ECMWF, 2019 ; WAMDI, 1988), and by the European Copernicus Marine Environment...
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Journal Article
Aquatic Ecosystem Health & Management (2020) 23 (2): 136–144.
Published: 02 April 2020
..., these values should not exceed 100 mgl −1 Dredging and reclamation activities can cause changes in seawater quality. The current study identifies the need for further developing and enforcing regulation to safeguard the marine environment and provides guidelines necessary for the sand dredging...
Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2020) 23 (4): 436–444.
Published: 01 October 2020
... on combination of internal variables. A preliminary step of data scaling was performed (logarithmic transformation), where normalized dimensionless numbers replaced the real data values. The similarity between the objects in the space variable are determined on the base of Euclidean distance. On the other...
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Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2018) 21 (1): 70–81.
Published: 02 January 2018
... bottom systems worldwide and provide food, refuge, and living space for a variety of organisms (Costanza et al., 1997 ; Duarte, 2000 ; Heck et al., 2003 ; Joseph et al., 2006 ). Seagrass meadows also provide important ecosystem functions such as absorbing and enriching heavy metals from either...
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Journal Article
Aquatic Ecosystem Health & Management (2015) 18 (4): 414–423.
Published: 02 October 2015
...- a is very significant (R 2 = 0.5829, p-value (statistical significance) = 0.00). Nitrification processes would result in apparent oxygen utilization (AOU) ranging from 0.22 to 35.88 μM, around 24.60% of the total biological oxygen demand in the water column of under-saturation of dissolved oxygen...
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Journal Article
Aquatic Ecosystem Health & Management (2006) 9 (2): 249–260.
Published: 01 July 2006
... governments, which have power over land matters, implement Federal policies regarding mangrove conservation. Copyright © AEHMS 2006 resource use and impacts economic value management issues mangals Mangroves are trees, shrubs, palms or ferns found above mean sea level in the intertidal zone...
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Journal Article
Aquatic Ecosystem Health & Management (2005) 8 (3): 293–302.
Published: 01 July 2005
... concentrations were located in the marine area in front of the industrial site ( Table 2 ). In particular, Cu, Hg and Cd showed ‘spot’ distribution, while Fe, Pb, Zn and Mn had a more regular distribution, with decreasing values from the plant to the open sea ( Romano et al., 2004 ). The highest Cu concentration...
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Journal Article
Aquatic Ecosystem Health & Management (2012) 15 (2): 168–175.
Published: 01 April 2012
... for monitoring phytoplankton can aid the study of aquatic ecosystems (McClain, 2009 ). Phytoplankton is a key component of particulate assemblages in marine waters. The size of algal particles is generally larger than suspended sediments in coastal waters that are usually dominated by finer inorganic...
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Journal Article
Aquatic Ecosystem Health & Management (2020) 23 (3): 323–331.
Published: 02 July 2020
... include marine fishes, crustaceans, mollusks, sea cucumbers, sea urchins and seaweeds. The fishing methods are very diverse, including hooks and lines, gill net or diving. Marine species with aesthetic values are exploited and sold to tourists. The target species are corals, mainly Pocillopora...
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Includes: Supplementary data
Journal Article
Aquatic Ecosystem Health & Management (2016) 19 (3): 276–285.
Published: 02 July 2016
... 2004–2010 in Sanya Bay to find out its status in recent years and what controlled its seasonal variation. Different to worldwide coastal and estuarine ecosystems, dissolved oxygen concentrations in the Bay reached minimum values in autumn rather than summer during most of the seven years, while maximum...
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