Download or read book Population Dynamics of the Reef Crisis written by and published by Academic Press. This book was released on 2020-11-13 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Population Dynamics of the Reef Crisis, Volume 87 in the Advances in Marine Biology series, updates on many topics that will appeal to postgraduates and researchers in marine biology, fisheries science, ecology, zoology and biological oceanography. Chapters in this new release cover SCTL disease and coral population dynamics in S-Florida, Spatial dynamics of juvenile corals in the Persian/Arabian Gulf, Surprising stability in sea urchin populations following shifts to algal dominance on heavily bleached reefs, Biophysical model of population connectivity in the Persian Gulf, Population dynamics of 20-year decline in clownfish anemones on coral reefs at Eilat, northern Red Sea, and much more. - Reviews articles on the latest advances in marine biology - Authored by leading figures in their respective fields of study - Presents materials that are widely used by managers, students and academic professionals in the marine sciences

Download or read book Population Dynamics of Coral reef Fishes written by Karen L. Overholtzer-McLeod and published by . This book was released on 2003 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the dynamics of open marine populations is difficult. Ecological processes may vary with the spatial structure of the habitat, and this variation may subsequently affect demographic rates. In a series of observational and experimental studies in the Bahamas, I examined the roles of emigration, mortality, and predation in the local population dynamics of juvenile coral-reef fishes. First, I documented mortality and emigration rates in populations of bluehead and yellowhead wrasse. Assuming that all losses were due solely to mortality would have significantly underestimated survivorship for both species on patch reefs, and for yellowheads on continuous reefs. Mortality differed between species, but emigration did not differ between species or reef types. Mortality of blueheads was density-dependent with respect to both conspecific density and total wrasse density on continuous reefs. In contrast, mortality of yellowheads varied inversely with the density of blueheads on patch reefs. Emigration rates varied inversely with distance to the nearest reef inhabited by conspecifics. In subsequent experiments, I manipulated densities of yellowhead wrasse and beaugregory damselfish, and determined that the relationship between density and mortality varied with reef spatial structure. On natural reefs, mortality rates of the wrasse were highly variable among reefs. On artificial reefs, mortality rates of both species were density-dependent on spatially isolated reefs, yet high and density-independent on aggregated reefs. Heterogeneity in the spatial structure of natural reefs likely caused variation in predation risk that resulted in high variability in mortality rates compared to artificial reefs. A final experiment demonstrated that a single resident predator caused substantial mortality of the damselfish, regardless of reef spacing. Patterns suggested that resident predators caused density-dependent mortality in their prey through a type 3 functional response on all reefs, but on aggregated reefs this density dependence was overwhelmed by high, density-independent mortality caused by transient predators. These results (1) suggest post-settlement movement should be better documented in reef-fish experiments, (2) demonstrate that the role of early post-settlement processes, such as predation, can be modified by the spatial structure of the habitat, and (3) have ramifications for the implementation of marine reserves.

Download or read book Influence of Environmental Variability on Climate Change Impacts in Marine Ecosystems written by Christian Pansch and published by Frontiers Media SA. This book was released on 2022-09-26 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Global Knowledge on the Commercial Sea Cucumber Holothuria Scabra written by Annie Mercier and published by Academic Press. This book was released on 2022-06-29 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Global Knowledge on the Commercial Sea Cucumber Holothuria Scabra, Volume 91 in the Advances in Marine Biology serial, highlights new advances in the field, with this new volume presenting interesting chapters written by an international board of authors. - Provides the authority and expertise of leading contributors from an international board of authors - Presents the latest release in Advances in Marine Biology series - Updated release includes the latest information surrounding Global Knowledge On The Commercial Sea Cucumber Holothuria Scabra

Download or read book Advances in Marine Biology written by Jean-Francois Hamel and published by Elsevier. This book was released on 2023-05-24 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Marine Biology, Volume 94, the latest release in this series that highlights new advances in the field, presents interesting content written by an international board of authors. Chapters in this new release include The Falkland Islands marine ecosystem: a review of the seasonal dynamics and trophic interactions across the food web, An impact of non-native species invasions on the Caspian Sea biota, A global synthesis of microplastic contamination in wild fish species: challenges for conservation, implications for sustainability of wild fish stocks and future directions, and Addressing Underwater Noise: Joint Efforts and Progress on Its Global Governance. Provides the authority and expertise of leading contributors from an international board of authors Presents the latest release in the Advances in Marine Biology series

Download or read book Advances in Marine Biology written by and published by Academic Press. This book was released on 2022-11-24 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Marine Biology, Volume 93, the latest release in this comprehensive serial, highlights new advances in the field, with this new volume presenting interesting chapters written by an international board of authors. - Provides the authority and expertise of leading contributors from an international board of authors - Presents the latest release in Advances in Marine Biology series

Download or read book Special Volume on Kogia biology Part 1 written by and published by Academic Press. This book was released on 2023-11-15 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special Volume on Kogia biology presents in-depth and up-to-date reviews on all aspects of marine biology. Published since 1963, this serial updates on a variety of topics that will appeal to postgraduates and researchers in marine biology, fisheries science, ecology, zoology and biological oceanography. Reviews articles on the latest advances in marine biology Authored by leading figures in their respective fields of study Presents material that is widely used by managers, students and academic professionals in the marine sciences

Download or read book Population Dynamics and Recruitment Ecology of Some Caribbean Reef Corals written by David B. Carlon and published by . This book was released on 1995 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book What is Natural written by Jan Sapp and published by Oxford University Press, USA. This book was released on 2003 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: This detailed account of the ongoing destruction of coral reef communities crystallizes one of sciences most profound questions--is there a balance of nature? 13 illustrations.

Download or read book Recruitment and Population Dynamics of Coral reef Fishes written by M. J. Caley and published by . This book was released on 1998 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sensitivity Analysis Matrix Methods in Demography and Ecology written by Hal Caswell and published by Springer. This book was released on 2019-04-02 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book shows how to use sensitivity analysis in demography. It presents new methods for individuals, cohorts, and populations, with applications to humans, other animals, and plants. The analyses are based on matrix formulations of age-classified, stage-classified, and multistate population models. Methods are presented for linear and nonlinear, deterministic and stochastic, and time-invariant and time-varying cases. Readers will discover results on the sensitivity of statistics of longevity, life disparity, occupancy times, the net reproductive rate, and statistics of Markov chain models in demography. They will also see applications of sensitivity analysis to population growth rates, stable population structures, reproductive value, equilibria under immigration and nonlinearity, and population cycles. Individual stochasticity is a theme throughout, with a focus that goes beyond expected values to include variances in demographic outcomes. The calculations are easily and accurately implemented in matrix-oriented programming languages such as Matlab or R. Sensitivity analysis will help readers create models to predict the effect of future changes, to evaluate policy effects, and to identify possible evolutionary responses to the environment. Complete with many examples of the application, the book will be of interest to researchers and graduate students in human demography and population biology. The material will also appeal to those in mathematical biology and applied mathematics.

Download or read book Global Climate Change and Coral Reefs written by Clive R. Wilkinson and published by IUCN. This book was released on 1994 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: A global overview of the potential impacts of climate change and sea level rise on coral reefs, and of the implications of such impacts for ecological sustainable use of coral reefs. Includes information on the status and trends of reef conservation and use around the world, and suggestions for management of reefs in a changing world.

Download or read book Coral Reef Restoration Handbook written by William F. Precht and published by CRC Press. This book was released on 2006-05-25 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: " this book is the first to describe, in detail, the art and science of coral reef restoration. It is to be hoped that the information that can be gleaned within the pages of this book will set a path towards continued preservation of this valuable underwater treasure to be used, appreciated, and experienced for future generations." -- Senator

Download or read book Resetting Predator Baselines in Coral Reef Ecosystems written by Darcy E. Bradley and published by . This book was released on 2016 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Finally, I demonstrate that humans can interact with reef sharks without persistent behavioral impacts, and that well-regulated shark diving can capture the economic benefits of tourism without undermining conservation goals (Chapter 3). Throughout this dissertation, I focus on coral reef associated shark species, but the challenges I consider and the methods I employ are important for many systems and many predators, which tend to move more than their prey. We often find ourselves managing a moving target, and so counting things correctly, assessing ecological variability, and understanding behavioral responses due to human interactions with wildlife can profoundly change the way we understand and manage both terrestrial and marine systems.

Download or read book The Future of Coral Reefs Subject to Rapid Climate Change Lessons from Natural Extreme Environments written by Emma F. Camp and published by Frontiers Media SA. This book was released on 2019-01-22 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examination of corals and reef-associated organisms which endure in extreme coral reef environments is challenging our understanding of the conditions that organisms can survive under. By studying individuals naturally adapted to unfavorable conditions, we begin to better understand the important traits required to survive rapid environmental and climate change. This Research Topic, comprising reviews, and original research articles, demonstrates the current state of knowledge regarding the diversity of extreme coral habitats, the species that have been studied, and the knowledge to-date on the mechanisms, traits and trade-offs that have facilitated survival.

Download or read book The Effects of Increased Sedimentation on the Recruitment and Population Dynamics of Juvenile Corals at Cape Tribulation North Queensland written by David A. Fisk and published by . This book was released on 1989 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Influence of Pre and Post settlement Processes on the Population Dynamics of Coral Reef Damselfishes written by Mark Gregory Meekan and published by . This book was released on 1992 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Over the last decade there has been a vigorous debate among ecologists about the relative importance of pre- and post-settlement processes on the dynamics of benthic populations of coral reef fish. Advocates for the importance of pre-settlement processes claim that variabifity in the supply of new individuals from the plankton is a major determinant of the size and structure of benthic populations. This variability is thought to occur as a result of the mortality and dispersal of pelagic larvae. In contrast, those advocating the importance of post-settlement processes claim that competition (for space and/or food) and predation largely determines the distribution and abundance of benthic populations. One of the reasons that this debate remains unresolved is that there have been no complete demographic studies of reef fish. Rather, the proponents of one view or the other have tended to restrict their research to small parts of the problem. This study describes one of the first examinations of demographic processes occurring during both the pre-settlement and post-settlement life-history stages of reef fishes.-- In this study I documented the recruitment, larval abundance, spawning and post-settlement mortality of damselfishes in three reef habitats at Lizard Island, northern Great Barrier Reef (GBR). The recruitment patterns of three species, Pomacentrus amboinensis, P. nagasakiensis and Dischistodus perspicillatus were described by weekly collections of recruits from small, artificial patch reefs during the 1988/89 and 1989/90 summers. During the first summer, the majority of recruits of these species arrived in benthic habitats in a broad episode of settlement that encompassed a 4-week period at the beginning of the summer. This pattern was repeated only by D. perspicillatus during the following summer; P. amboinensis and P. nagasakiensis recruited during most weeks of sampling in 1989/90.-- Recruitment patterns were strongly correlated with the timing and magnitude of catches of these same species in light traps in the nearshore waters around Lizard Island. This suggested that recruitment patterns at this locality were largely determined by the distribution and abundance of older larval stages within the plankton.-- Catches of larvae by light traps often peaked over short periods of a few days. Peaks in catches occurred synchronously, but with variable magnitude among habitats. These patterns were consistent with the suggestion that physical and biological processes aggregate pre-settlement fish into large (up to km) patches within the plankton.-- Other evidence suggested that larval behaviour was also an important determinant of patterns in catches and recruitment. Few Pomacentrus nagasakiensis larvae were collected by light traps in the lagoon habitat during both summers. As catches of P. amboinensis and Dischistodus perspicillatus did not vary in a similar fashion, differential behaviour is implied. P. nagasakiensis may either settle preferentially on the reef margins so that larval supply is exhausted by the time water enters the lagoon, or else larvae of this species may be able to detect and avoid the lagoon habitat.-- The relative influence of larval production and planktonic processes on recruitment patterns was examined by documenting the spawning patterns of Pomacentrus amboinensis. Males of this species guard clutches of demersally spawned eggs until hatching, and reproductive output can be estimated at daily intervals by mapping the area of eggs held within nests. Spawning occurred at lunar intervals during the 1988/89 summer, with peaks in output coinciding with the full moon. During the following season, spawning occurred in an asymmetrical semi-lunar pattern, with larger full moon peaks than new moon peaks.-- Significant correlations were found between temporal patterns of light trap catches, recruitment and spawning of Pomacentrus amboinensis when data sets were lagged by a period of lime equivalent to pre-settlement life (23 days). However, the magnitude of light trap catches and recruitment was only weakly correlated with the magnitude of reproduction. Peaks in recruitment were approximately three times more variable in size than peaks of spawning. This variability was attributed to the action of processes occurring within the plankton.-- The correlation between temporal patterns of spawning, larval abundance and recruitment contradicts prevailing views that recruitment patterns are largely determined by processes acting in the plankton. As Pomacentrus anthoinensis has a relatively short planktonic duration (19 days), this may allow little time for planktonic processes to decouple temporal patterns of spawning and recruitment. P. amboinensis larvae also have well-developed sensory and locomotory abilities at hatching, and may be more capable of influencing their fate within the plankton than the passively dispersed eggs of pelagic spawners.-- The cyclical pattern of reproduction of Pomacentrus amboinensis may have been determined by factors operating at both global (tidal cycles, moon phase) and local scales (predation, food availability). This combination of factors would account for the considerable variability in reproduction observed among habitats in this species. Spawning occurred in a lunar pattern in all habitats during the 1988/89 summer. However, in the 1989/90 summer, spawning occurred at semi-lunar intervals in the leeward habitat, while lunar patterns were recorded in the lagoon. Spawning occurred in an acyclic pattern in the windward habitat. During both summers, males in the lagoon produced fewer larvae than those in the windward or leeward habitats.-- The mortality of newly-settled reef fish was examined by comparing the numbers of recruits collected from artificial patch reefs at daily, weekly and monthly intervals. These comparisons showed that recruits experienced very high rates of mortality, probably as a result of predation, within the first week and month of settlement. Mortality varied inconsistently among species, times and habitats. Thus, patterns established at settlement may not determine the abundance of older juveniles and adults in any predictable fashion. These results suggest that predation may be an important determinant of the size and structure of benthic populations at Lizard Island.-- There was little evidence that the mortality of Pomacentrus amboinensis recruits was influenced by growth. Estimates of growth rates were obtained by plotting age of recruits (calculated from otolith analysis) against a measure of size (standard length). However, comparisons of growth and mortality were hampered by the migration of recruits from patch reefs and by errors in otolith analysis. There were no patterns in the growth or mortality of recruits that were consistent with any effect of density. This suggests that competition for benthic resources had little influence on patterns of abundance, at least within the first month of settlement.-- This study demonstrates that processes occurring during a variety of life-history stages may regulate the dynamics of populations of coral reef fish. These interactive effects must be described if predictive and general models of demographics are to be constructed. Given the increasing anthropogenic stresses being placed on stocks of reef fishes and on reef systems world-wide, the development of such models is now overdue.