Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Community Structure Of Hermatypic Corals At Maro Reef In The Northwestern Hawaiian Islands
Download Community Structure Of Hermatypic Corals At Maro Reef In The Northwestern Hawaiian Islands full books in PDF, epub, and Kindle. Read online Community Structure Of Hermatypic Corals At Maro Reef In The Northwestern Hawaiian Islands ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Community Structure of Hermatypic Corals at Maro Reef in the Northwestern Hawaiian Islands by : Jean C. Kenyon
Download or read book Community Structure of Hermatypic Corals at Maro Reef in the Northwestern Hawaiian Islands written by Jean C. Kenyon and published by . This book was released on 2008 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Percent cover of shallow-water (
Book Synopsis Community Structure of Hermatypic Corals at Pearl and Hermes Atoll, Northwestern Hawaiian Islands by :
Download or read book Community Structure of Hermatypic Corals at Pearl and Hermes Atoll, Northwestern Hawaiian Islands written by and published by . This book was released on 2007 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The distribution and abundance of scleractinian corals at Pearl and Hermes Atoll (PHA), Northwestern Hawaiian Islands, were determined by georeferenced towed-diver surveys that covered more than 85,000 m2 of benthic habitat and site-specific surveys at 34 sites during 2000-2002. Three complementary methods (towed-diver surveys, videotransects, and photoquadrats) were used to quantify percent cover of corals by genus or species in the fore reef, back reef, lagoon, and channel habitats. Three genera--Porites, Montipora, and Pocillopora--account for 97% of the coral cover throughout the atoll, though their relative abundances vary considerably according to habitat and geographic sector within habitats. Fore-reef communities are dominated by massive and encrusting Porites, while the back reef is dominated by Montipora and the lagoon by Porites compressa. All taxa show habitat-specific differences in colony density and size-class distributions as assessed through colony counts within belt transects at fixed sites. These demographic data, which provide the most thorough quantitative description of the coral communities at PHA to date, are used to focus a discussion on risks of reef degradation from salient contemporary hazards, including bleaching, disease, marine debris, and Acanthaster predation. Coral communities at PHA may be the most vulnerable in the Hawaiian Archipelago to bleaching and accumulation of marine debris, thus warranting special management attention. These data also provide a detailed baseline to which population parameters determined from long-term monitoring surveys can be compared to assess the direction, pace, and drivers of change.
Book Synopsis Community Structure of Hermatypic Corals at Kure Atoll in the Northwestern Hawaiian Islands by : Jean C. Kenyon
Download or read book Community Structure of Hermatypic Corals at Kure Atoll in the Northwestern Hawaiian Islands written by Jean C. Kenyon and published by . This book was released on 2008 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: The distribution and abundance of scleractinian corals at Kure Atoll in the Northwestern Hawaiian Islands was determined by georeferenced towed-diver surveys that covered close to 27,000 m2 of benthic habitat and site-specific surveys at 21 sites during 2000-2003. Three complementary methods (towed-diver surveys, video transects, and photoquadrats) were used to quantify percent cover of corals by genus or species in the fore-reef, back-reef, and lagoon habitats. Three genera, Porites, Pocillopora, and Montipora, accounted for more than 99% of the coral cover throughout the atoll, although their relative abundances vary considerably according to habitat and geographic sector within habitats. Fore-reef communities are dominated by massive and encrusting Porites and by Pocillopora, while the back reef is dominated by Montipora and the lagoon by Porites compressa. All taxa show habitat-specific differences in colony density and size-class distributions as assessed through colony counts within belt transects at fixed sites. These demographic data provide the most detailed, spatially comprehensive description of coral communities at Kure Atoll produced to date and can serve as a solid baseline for determining the magnitude and direction of future changes. They are discussed within the context of factors known to affect community development on Hawaiian coral reefs including temperature, wave stress, coral bleaching and other diseases, marine debris, and crown-of-thorns seastars.
Book Synopsis Community Structure of Hermatypic Corals at Midway Atoll in the Northwestern Hawaiian Islands by : Jean C. Kenyon
Download or read book Community Structure of Hermatypic Corals at Midway Atoll in the Northwestern Hawaiian Islands written by Jean C. Kenyon and published by . This book was released on 2010 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Percent cover of shallow-water ( 20 m depth) scleractinian corals at Midway Atoll, a classic atoll in the Northwestern Hawaiian Islands (NWHI), was quantified from analysis of imagery recorded along more than 49 km of benthic habitat by towed divers and at 26 sites surveyed with video transects and photoquadrats during 2002 and 2003. Colony densities and size class distributions were determined from censuses within belt transects at the same sites. All three methods showed statistically significant differences in total coral cover and relative abundance of coral genera among three habitats (fore reef, back reef, and lagoon). Mean coral cover was sparse (
Book Synopsis Community Structure of Hermatypic Corals at Layson Island and Lisianski Island/Neva Shoal in the Northwestern Hawaiian Islands by :
Download or read book Community Structure of Hermatypic Corals at Layson Island and Lisianski Island/Neva Shoal in the Northwestern Hawaiian Islands written by and published by . This book was released on 2007 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The distribution and abundance of scleractinian corals at Laysan Island and Lisianski Island/Neva Shoal in the Northwestern Hawaiian Islands were determined by georeferenced towed-diver surveys that covered more than 56,000 m2 of benthic habitat and site-specific surveys at 33 sites during 2000-2004. Three complementary methods (towed-diver surveys, videotransects, and photoquadrats) were used to quantify percent cover of corals by genus or species at each bank and determine relative abundance. Colony counts within belt transects at fixed sites were used to assess colony density and size-class distribution. Significant differences were found between the two banks at comparable depths (7-18 m) in percent coral cover, relative abundance of the three primary genera (Porites, Montipora, and Pocillopora), and size class distributions of these genera. The coral community at Lisianski/Neva Shoal was characterized by higher percent cover, higher colony density, and a tendency towards larger colonies than the coral community at Laysan. Porites was the dominant genus at both locations, but the relative abundance of Pocillopora and Montipora differed between the banks, with Pocillopora more common at Laysan than at Lisianski/Neva Shoal, and Montipora more common at Lisiansksi/Neva Shoal than at Laysan. Notable differences were also found in the distribution of the three primary genera at the two banks. These demographic data are discussed in the context of the known history of exposure of these remote reefs to salient factors influencing the condition of coral communities including marine debris, bleaching, and disease. They provide a detailed baseline of the composition of these shallow-water communities in the early years of the 21st century that will serve as a comparative benchmark for examining long-term change.
Book Synopsis Characterizing the Unique Habitat of Montipora Dilatata by : Katherine Adams
Download or read book Characterizing the Unique Habitat of Montipora Dilatata written by Katherine Adams and published by . This book was released on 2014 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Montipora dilatata is a rare coral that has been found only in Kāne'ohe Bay, Hawaii, and on Maro Reef in the Northwestern Hawaiian Islands (Forsman et al. 2010). In recent decades M. dilatata has been decreasing in abundance and is now considered a Species of Concern (SOC) by the National Oceanic Atmospheric Administration (NOAA) and the National Marine Fisheries Services (NMFS). In this study, known M. dilatata colonies in Northern Kāne'ohe Bay were surveyed to determine if the environmental parameters of the colonies are similar on different reefs of similar size and location. The confirmed colonies were compared with random points on a nearby reef on which M. dilatata had not been previously identified. A visual survey was completed on this reef which resulted in several potential M. dilatata colonies being identified based on morphology. Community structure, water depth, pH, salinity, spatial complexity, and colony size were compared between reefs using t-test analyses. These results could indicate the likelihood of the unidentified colonies being M. dilatata based on similarities and differences between the three studied reefs.
Book Synopsis The Telegraph Messenger's New Year's Greeting by :
Download or read book The Telegraph Messenger's New Year's Greeting written by and published by . This book was released on 1889 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atoll Research Bulletin written by and published by . This book was released on 1996 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Natural History of the Hawaiian Islands by : E. Alison Kay
Download or read book A Natural History of the Hawaiian Islands written by E. Alison Kay and published by University of Hawaii Press. This book was released on 1994-12-01 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together recent primary source materials on major themes in Hawaiian natural history: the geological processes that have built the Islands; the physical factors that influence the Island's terrestrial ecosystems; the dynamics of the sea that support coral reefs, fish, and mollusks; the peculiarities of animals and plants that have evolved in the Islands and are found nowhere else; and the human impact on the land, plants, and animals.
Book Synopsis Refuge in the Deep? Assessing the Potential of Mesophotic Coral Ecosystems to Act as Refugia for Shallow Coral Reef Fishes in the Hawaiian Islands by : Corinne Nicole Kane
Download or read book Refuge in the Deep? Assessing the Potential of Mesophotic Coral Ecosystems to Act as Refugia for Shallow Coral Reef Fishes in the Hawaiian Islands written by Corinne Nicole Kane and published by . This book was released on 2018 with total page 153 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coral reefs are increasingly under threat, necessitating an emphasis to identify coral reefs with reduced susceptibilities to local and/or global anthropogenic impacts. Mesophotic coral reefs (MCEs; >30m) are proposed as potential refugia and/or propagule sources, yet little information is known about deep reefs' abilities to harbor, replenish, or conserve shallow species. In this dissertation, I examine the plausibility of MCEs to act as refugia for shallow reef fishes in the Hawaiian Islands. Chapter One explores reef fish community structure and habitat composition along a 3-50m gradient in West Hawai'i. Reef fish communities change gradually with depth, with >78% of species observed at mesophotic depths (>30m) found at shallow depths. Changes in community structure are linked closely with feeding behavior, with shallow reefs dominated by herbivores, while mesophotic reefs are dominated by invertivore and planktivore trophic assemblages. Changes in fish assemblages are tied to indirect effects of depth and available coral habitat, as deeper reefs contain more patchily-distributed habitat. Chapter Two examines mechanisms underlying herbivorous fish distributions using a suite of observational and experimental field and laboratory techniques. Herbivorous fishes are not limited by food resources at MCE depths, as MCE algae had similar nutritional content, species assemblages, and appears to be highly palatable from algal choice experiments. Instead, changes with depth are likely the result of top-down, non-consumptive predation effects and behavioral choices. Chapter Three undertakes a critical analysis of the deep refugia hypothesis for coral reef fishes across the Main Hawaiian Islands. Upper MCEs (30-60m) may act as refugia for shallow reef fishes, as we found they are more thermally stable and >70% of reef fishes encountered were shallow species. Conversely, MCEs contain reduced densities of reef fishes and communities are comprised almost solely of invertivore and planktivore trophic groups. The near-absence of herbivorous fishes below 30m indicate MCEs will have a limited capacity to re-seed shallow reefs with species of ecological or economic importance. Overall, MCEs may act as refugia for biodiversity conservation but their ability to restock shallow reef fish communities will result in fundamentally different community compositions that shift towards smaller-bodied and less economically/ecologically valuable species.
Book Synopsis Coral Reef Community Structure at Hanauma Bay, Oahu, Hawaii by : Brooks D. Anderson
Download or read book Coral Reef Community Structure at Hanauma Bay, Oahu, Hawaii written by Brooks D. Anderson and published by . This book was released on 1978 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reproduction of a portion of author's Ph. D. thesis, Heed University, 1978.
Book Synopsis Coral Community Structure at Hanauma Bay, Oahu, Hawaii by : Brooks D. Anderson
Download or read book Coral Community Structure at Hanauma Bay, Oahu, Hawaii written by Brooks D. Anderson and published by . This book was released on 1977 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Light Availability on Reef Community Structure of Hermatypic Corals Within Sian Ka'an Biosphere Reserve, Quintana Roo, Mexico by : Scott P. Milroy
Download or read book Effects of Light Availability on Reef Community Structure of Hermatypic Corals Within Sian Ka'an Biosphere Reserve, Quintana Roo, Mexico written by Scott P. Milroy and published by . This book was released on 1999 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamics of Coral Communities by : R.H. Karlson
Download or read book Dynamics of Coral Communities written by R.H. Karlson and published by Springer Science & Business Media. This book was released on 2002-10-31 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the dynamical processes influencing the structure of coral communities, some of the most biologically diverse communities on earth. A variety of biological and physical processes operating across an enormous range of spatiotemporal scales are highlighted (e.g., niche partitioning, biological interactions, disturbance phenomena, large-scale tectonic, eustatic, climatic, and oceanographic processes). The focus on the community provides a framework for presenting some of the best examples from the literature using multiple taxonomic groups (e.g., corals, fishes, encrusting invertebrates).
Book Synopsis The Ecology of an Hawaiian Coral Reef by : Charles Howard Edmondson
Download or read book The Ecology of an Hawaiian Coral Reef written by Charles Howard Edmondson and published by . This book was released on 1928 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Evaluation of Causal Factors Affecting Coral Reef Community Structure in Ma'alaea Bay, Maui, Hawaii by : Steven J. Dollar
Download or read book An Evaluation of Causal Factors Affecting Coral Reef Community Structure in Ma'alaea Bay, Maui, Hawaii written by Steven J. Dollar and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "On March 16, 2010, the County of Maui provided funding to conduct research to investigate and identify point and non-point pollution and nutrient sources that may have led to drastic declines in coral heath and complexity of the benthic community and, subsequently, promoted excessive algal growth in Ma'alaea Bay. A second objective of the work was to provide information that could be utilized for developing planning tools to better protect coral reefs throughout the State of Hawaii through investigation, interpretation and publication of the causes and effects of the decline in Ma'alaea Bay's healthy and complex reef habitat"--Executive summary.
Book Synopsis Effects of Marine Protected Areas on Benthic Community Structure and Ecological Processes on Coral Reefs in Hawaiʻi by : Danielle Jayewardene
Download or read book Effects of Marine Protected Areas on Benthic Community Structure and Ecological Processes on Coral Reefs in Hawaiʻi written by Danielle Jayewardene and published by . This book was released on 2009 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite a wealth of information on the effects of Marine Protected Areas (MPAs), the direct influence of marine protection on specifically coral communities has yet to be fully established. The goal of my dissertation research was to determine whether, in the Main Hawaiian Islands, MPAs influence coral communities and ecological processes with direct and indirect effects to these. My specific research objectives were to determine the effects of MPAs on: (1) the composition of the benthic community; (2) grazing by parrotfishes; (3) predation on coral by fishes; and (4) the balance between bioerosion and accretion of the reef framework. While I found a trend of greater herbivorous fish populations at sites with greater levels of marine protection, this was not associated with a predictable benthic community composition such as low macro- or filamentous turf algal cover, high crustose coralline algal cover and coral cover, or low densities of Tripneustes gratilla and Echinometra mathaei urchins My grazing study demonstrated that algal reduction rates by parrotfishes were positively related to parrotfish biomass, and were proportionately greater per unit biomass for large compared to small parrotfishes. I found fish predation on coral by Arothron meleagris and Cantherhines dumerilli to be prevalent across study sites, and focused on the most common Hawaiian coral species. Predation by A. meleagris on Porites compressa appeared to have little effect when the coral was abundant and when lesions healed efficiently, but limited P. compressa population growth once corals become sparse, and/or the size of corals become very small. The carbonate budget I developed, while simplified, showed study reefs to have net accretion, and this to be driven primarily by growth of the coral community.
