نتایج جستجو برای: coral reef

تعداد نتایج: 20812  

2002
A. J. Heyward L. D. Smith M. Rees S. N. Field

New technologies for culturing and settling scleractinian coral larvae in the field are required to elucidate the role of recruitment in population dynamics and to provide options for reef rehabilitation. Natural multi-species aggregations of coral embryos, which frequently form slicks on the sea surface after large-scale annual spawnings, were identified as a potential resource for mass coral ...

Journal: :Current Biology 2009
Joshua E. Cinner Timothy R. McClanahan Tim M. Daw Nicholas A.J. Graham Joseph Maina Shaun K. Wilson Terence P. Hughes

The ecosystem goods and services provided by coral reefs are critical to the social and economic welfare of hundreds of millions of people, overwhelmingly in developing countries [1]. Widespread reef degradation is severely eroding these goods and services, but the socioeconomic factors shaping the ways that societies use coral reefs are poorly understood [2]. We examine relationships between h...

2005
Gisèle Muller-Parker Christopher F. D'Elia

Interactions between Corals and their Symbiotic Algae Gisèle Muller-Parker and Christopher F. D'Elia The mutualistic relationship between corals and their algal endosymbionts is a key factor in the evolutionary success of hermatypic (reef building) corals. Corals that harbor endosymbiotic algae exhibit faster rates of calcification, photoautotrophy and many other attributes that are believed to...

2010
Pim Bongaerts Cynthia Riginos Tyrone Ridgway Eugenia M. Sampayo Madeleine J. H. van Oppen Norbert Englebert Francisca Vermeulen Ove Hoegh-Guldberg

BACKGROUND Coral reefs are hotspots of biodiversity, yet processes of diversification in these ecosystems are poorly understood. The environmental heterogeneity of coral reef environments could be an important contributor to diversification, however, evidence supporting ecological speciation in corals is sparse. Here, we present data from a widespread coral species that reveals a strong associa...

2013
Woodley

Introduction Degradation of the world's coral reefs is one of the most vivid examples of the effects of global environmental damage of marine ecosystems. The major stressors responsible for coral reef decline have been attributed to coastal urban and industrial development, agricultural activity, sedimentation, overharvesting, marine pollution, disease and climate change Reef species experienci...

Journal: :Revista de biologia tropical 2016
Hansel Caballero Aragón Pedro M Alcolado Néstor Rey-Villiers Susana Perera Valderrama Juliett González Méndez

Wave exposure can influence community structure and distribution of shallow coral reefs, by affecting organisms both directly and indirectly. To assess the current stony coral community condition under different degrees of wave exposure at a marine protected area of the Gulf of Cazones (SW Cuba), two expeditions were carried out in May 2010 and June 2012. Four sampling sites were sampled at ree...

2004
Jeff Bennett

Incentives for coral reef resource use have, historically, been skewed toward extractive options that yield private returns, and against protection options that provide predominantly public good benefits. The consequence of this incentive imbalance has been an excessive rate of coral reef resource exploitation and hence an under-supply of protected coral reefs. Numerous policy options, ranging ...

Journal: :Trends in ecology & evolution 2010
Terry P Hughes Nicholas A J Graham Jeremy B C Jackson Peter J Mumby Robert S Steneck

Phase-shifts from one persistent assemblage of species to another have become increasingly commonplace on coral reefs and in many other ecosystems due to escalating human impacts. Coral reef science, monitoring and global assessments have focused mainly on producing detailed descriptions of reef decline, and continue to pay insufficient attention to the underlying processes causing degradation....

Journal: :Environmental science & technology 2005
Baruch Rinkevich

The scientific discipline of active restoration of denuded coral reef areas has drawn much attention in the past decade as it became evident that this ecosystem does not often recover naturally from anthropogenic stress without manipulation. Essentially, the choices are eitherthe continuous degradation of the reefs or active restoration to encourage reef development. As a result, worldwide rest...

2015
JHR Burns D Delparte RD Gates M Takabayashi Fabiano Thompson

The structural complexity of coral reefs plays a major role in the biodiversity, productivity, and overall functionality of reef ecosystems. Conventional metrics with 2-dimensional properties are inadequate for characterization of reef structural complexity. A 3-dimensional (3D) approach can better quantify topography, rugosity and other structural characteristics that play an important role in...

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