Quantitative ökologische Analyse eines Rifflagunenareals bei Aqaba (Golf von Aqaba, Rotes Meer)

Mergner, H.

doi:10.1007/bf02277991

Cited by 32 publications

(18 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The abundance of these corals showed favorable terms on the reef, as it is known that acroporids among the first negatively react to environmental changes, primarily to anthropogenic pollution and eutrophication of the surrounding waters and therefore the first to die, there is no or very few and far between in the contaminated areas [1,2,13,24]. The studied reef is characterized by distinct bionomical zonality, high species variety, and dense coral cover on the substrate, mass development of spherical and tabular forms of coral colonies, and continuous monosettlements of acroporids, which is typical for optimal climax conditions on the reef [9,18,[25][26][27].…”

Section: Discussionmentioning

confidence: 99%

Encrusting protected reef Hon Nai in Cam Ranh Bay in the South China Sea

Latypov¹

2012

View full text Add to dashboard Cite

A protected non-structural reef in Сam Ranh Bay in southern Vietnam was surveyed. A high diversity was found among scleractinian and accompanying mass species of macrobenthos. Thirtyfour species were identified only among genera Acropora; it made 80% of the total composition of these Scleractinian on reefs of Vietnam and a quarter of the total abundance of these corals on reefs in the Indo-Pacific. A new species, Favites сamranensis sp. nov, earlier unknown for science, has been found. The vertical bionomic zonality corresponding to zonal distribution of environmental factors on the reef under study is similar to that on reefs of the Siam Bay, different regions of the Pacific and the Caribbean Basin. Expansion of prosperous state of the reef and minimization of anthropogenic influence on some reefs of Vietnam had a positive effect on their state. It is supposed, that the reef at Hon Nai Island is obliged by the prosperity to security measures and minimization of the anthropogenous influence, provided with the decision of government SRV and company "Sanest".

show abstract

Section: Discussionmentioning

confidence: 99%

Encrusting protected reef Hon Nai in Cam Ranh Bay in the South China Sea

Latypov¹

2012

View full text Add to dashboard Cite

show abstract

“…Dabei fiihrt "sea-floor-spreading" zur Bildung junger ozeanischer Kruste; das Rote Meer stellt somit einen Ozean " in statu nascendi" dar (u. a. Fiir eine realitatsgetreue Wiedergabe der Artenzusammensetzung und Kolonieanzahl in einer Zone ist erstere besonders geeignet (Mergner, 1979;Mergner & Schuhmacher, 1981;Weinberg, 1981}. Der Schelfsockel des Roten Meeres, besonders seine ausgedehnten Flachwassergebiete vor der sudanesischen Kiiste, haben die Entwicklung und Vielfalt iippiger Korallenriffe begiinstigt.…”

Section: Untersuchungsregion Und Naturverh~ltnisseunclassified

Quantitative Analyse von Korallengemeinschaften des Sanganeb-Atolls (mittleres Rotes Meer). I. Die Besiedlungsstruktur hydrodynamisch unterschiedlich exponierter Außen- und Innenriffe

Mergner

Schuhmacher

1985

Helgolander Meeresunters

Self Cite

View full text Add to dashboard Cite

Quantitative analysis of coral communities of Sanganeb-Atoll {central Red Sea). I.The community structure of outer and inner reefs exposed to different hydrodynamic regimes. The Sanganeb-Atoll off Port Sudan is an elongate annular reef which rests on a probably raised block in the fracture zone along the Red Sea-graben. Its gross morphology was most likely formed by subaerial erosion during low sealevel conditions. Features of its topography and hydrography are described. The prevailing wind waves are from NE. Hence, the outer and inner reef slopes are exposed to different hydrodynamic conditions. The sessile benthos was analysed using the quadrat method. Four test quadrats (5 × 5 m each) were selected on the outer and inner slopes at a depth of 10 m along a SSW-NNE transect across the atoll. Cnidaria were by far the most dominating group; coralline algae, Porifera, Bryozoa and Ascidia, however, counted for just under 3 % living cover. Light and temperature intensities did not differ significantly at the sites studied; water movement, however, decreased in the following order: TQ IV (outer NE side of the reef ring) was exposed to strong swell and surf; TQ II (inner side of the SW-ring) was met by a strong longreef current; TQ I was situated on the outer lee of the SW-atoll ring and TQ III in the inner lee of the NE-side. This hydrodynamic gradient correlates with the composition of the coral communities from predominantly branching Scleractinia (staghorn-like and other Acropora species and Pocillopora) in TQ IV, through a Lobophyttia, Porites and Xenia-dominated community in TQ II, and a mixed community with an increasing percentage of xeniid and alcyoniid soft corals in TQ I, to a community in TQ III which is dominated by the soft corals Sinularia and Dendronephthya. The cnidarian cover ranged between 42.4 and 56.6 % whereby the two exposed test quadrats had a higher living coverage than the protected ones. In total, 2649 colonies comprising 124 species of stony, soft and hydrocorals were recorded by an elaborate method of accurate in-situ mapping. The 90 scleractinian species found include 3 species new to the Red Sea and 11 hitherto unknown species from its central part. Only 7 cnidarian species covered large areas, forming a Xenia macrospiculata-zone in TC) I, a Lobophyllia corymbosa-zone in TQ II, a Sinularia-Dendronephthya-zone in TQ III and an Acropora-Pocillopora verrucosa-zone in TQ IV, Hydrodynamic exposition and ratio of genus abundance Acropora :Montipora are closely correlated: on the windward side (TQ IV) it is 943:4, but on the leeward side (TQ I) 18 : 208. Apart from the taxonomic and quantitative distribution of species and colonies, types of growth form and categories of the dead substrate are given. Since soft corals do not contribute to the reef framework, the distribution of Scleractinia and Alcyonaria indicates that at Sanganeb-Atoll reef substance is mainly generated on the windward side.

show abstract

“…The coral reefs of the Jordanian coast have been studied in detail by Schuhmacher 1974, 1981;Mergner 1979Mergner , 2001. Several studies on the autecology (e.g.…”

Section: Introductionmentioning

confidence: 99%

Community structure and biogeography of shore fishes in the Gulf of Aqaba, Red Sea

Khalaf¹,

Kochzius

2002

Helgol Mar Res

View full text Add to dashboard Cite

Shore fish community structure off the Jordanian Red Sea coast was determined on fringing coral reefs and in a seagrass-dominated bay at 6 m and 12 m depths. A total of 198 fish species belonging to 121 genera and 43 families was recorded. Labridae and Pomacentridae dominated the ichthyofauna in terms of species richness and Pomacentridae were most abundant. Neither diversity nor species richness was correlated to depth. The abundance of fishes was higher at the deep reef slope, due to schooling planktivorous fishes. At 12 m depth abundance of fishes at the seagrass-dominated site was higher than on the coral reefs. Multivariate analysis demonstrated a strong influence on the fish assemblages by depth and benthic habitat. Fish species richness was positively correlated with hard substrate cover and habitat diversity. Abundance of corallivores was positively linked with live hard coral cover. The assemblages of fishes were different on the shallow reef slope, deep reef slope and seagrass meadows. An analysis of the fish fauna showed that the Gulf of Aqaba harbours a higher species richness than previously reported. The comparison with fish communities on other reefs around the Arabian Peninsula and Indian Ocean supported the recognition of an Arabian subprovince within the Indian Ocean. The affinity of the Arabian Gulf ichthyofauna to the Red Sea is not clear.

show abstract

Quantitative ökologische Analyse eines Rifflagunenareals bei Aqaba (Golf von Aqaba, Rotes Meer)

Cited by 32 publications

References 5 publications

Encrusting protected reef Hon Nai in Cam Ranh Bay in the South China Sea

Encrusting protected reef Hon Nai in Cam Ranh Bay in the South China Sea

Quantitative Analyse von Korallengemeinschaften des Sanganeb-Atolls (mittleres Rotes Meer). I. Die Besiedlungsstruktur hydrodynamisch unterschiedlich exponierter Außen- und Innenriffe

Community structure and biogeography of shore fishes in the Gulf of Aqaba, Red Sea

Contact Info

Product

Resources

About