Monitoring Temporal and Spatial Spawning Variability Through Molecular Identification of Marine Fish Eggs
Monitoring Temporal and Spatial Spawning Variability Through Molecular Identification of Marine Fish Eggs

Author: Laura Emily Furtado

Publisher:

Published: 2019

Total Pages: 39

ISBN-13:

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Monitoring marine protected areas is essential in order to assess if they are effectively conserving marine species and their habitats. Long-term studies allow us to track changes in fish populations in response to environmental variability, and these data can aid in the management of protected areas and fished stocks. This study sampled ichthyoplankton from Scripps Pier for one year and identified them to species using DNA barcoding. These data were compared to results from Harada et al. (2015) and Duke et al. (2018), to look for variability in egg abundance and species diversity in response to seasonal temperature changes, including the record-breaking sea surface temperature recorded at Scripps Pier in August 2018. We observed peak egg abundance in June 2018, which was most similar to data from 2013 and 2014, a shift from later spawning seen in July or August during collections from 2015-2017. Overall egg abundance during the spring and summer months of 2018 and sea surface temperature data from the previous winter fits in with the correlation found in Duke, Harada, and Burton (2018). High temperatures recorded in August had no significant effect on number of eggs collected. In January 2019, sampling began at five other California locations, to establish baseline data and monitor sites across latitudes. Initial results have shown that species assemblages north and south of Point Conception, California are different from one another. Evaluating fish spawning in response to environmental variability over time and space will help with the management and conservation of marine resources.

Dynamics of the Larval Fish Assemblage at Two Coastal Delaware Inlets
Dynamics of the Larval Fish Assemblage at Two Coastal Delaware Inlets

Author: Michael P. Rhode

Publisher: ProQuest

Published: 2008

Total Pages:

ISBN-13: 9780549810872

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Larval fish assemblage structure, timing of ingress, and larval size were examined at Roosevelt Inlet (Delaware Bay) and Indian River Inlet (Delaware Coastal Bays) to better understand the magnitude and potential causes of recruitment variation occurring on local scales. Weekly sampling began at Roosevelt Inlet on January 30, 2006 and occurred simultaneously at the two inlets from May 15, 2006 to May 30, 2007. Univariate and multivariate biodiversity indexes were used to compare assemblage structure and seasonality between the two sites. Patterns of how estuarine spawner abundance and offshore spawner recruitment corresponded to water temperature and wind events were also shown. Whereas seasonality and species diversity were similar at the two inlets, we found significant differences in evenness due to large scale recruitment events at Roosevelt Inlet. Estuarine spawners showed similarities in timing of ingress, disappearance, and average size. Four species of estuarine spawners had peak abundances that were larger by an order of magnitude at Roosevelt Inlet. There were significant differences in offshore spawner timing of ingress and average size. At Roosevelt Inlet larvae were significantly larger (Atlantic croaker and Atlantic menhaden), and persisted longer in the collections. Results also show a correspondence between northwest winds and large scale recruitment events at Roosevelt Inlet. Indian River Inlet lacks these large scale recruitment events which may imply that viable transport mechanisms make Roosevelt Inlet more suitable for ingress of offshore spawners.

Tropical Estuarine Fishes
Tropical Estuarine Fishes

Author: Stephen J. M. Blaber

Publisher: John Wiley & Sons

Published: 2008-04-30

Total Pages: 387

ISBN-13: 0470694874

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Research on the large array of tropical estuarine fishes has increased markedly in recent years and hence scientific knowledge about most aspects of these important fishes' biology and ecology is now catching up with that of their temperate equivalents. This landmark book draws together a vast wealth of information on tropical estuarine fishes and provides a vital reference point for all aspects of their study. The book's comprehensive contents include thorough coverage of the types and distribution of these fishes, their diversity and the environmental conditions and communities in which they live. Full details of their biology and ecology are an integral part of this book, as are details of these fishes' dependence on estuaries, man's interaction with the estuarine fish community and the conservation of estuarine species and the often threatened habitats upon which they depend. The author, Stephen Blaber, has a vast wealth of experience in the subject areas covered by this book and has produced a stimulating and extremely valuable volume that will be of huge importance for all those concerned with these fishes. He is based at CSIRO Marine Research, Cleveland, Queensland, Australia. Readership should include: fish biologists; fisheries scientists; aquatic scientists including those concerned with brackish, marine and freshwater environments; ecologists; environmental scientists and population biologists. Students studying for qualifications in fish biology and fisheries, particularly where there is a tropical element to their course will find this book of great value as a reference. Copies of the book should be available on the shelves of all libraries in research establishments and universities where biological sciences, fish biology, fisheries science or aquatic sciences are studied and taught.

Coral Reefs of the Red Sea
Coral Reefs of the Red Sea

Author: Christian R. Voolstra

Publisher: Springer

Published: 2019-05-07

Total Pages: 185

ISBN-13: 3030058026

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This volume is a complete review and reference work for scientists, engineers, and students concerned with coral reefs in the Red Sea. It provides an up-to-date review on the geology, ecology, and physiology of coral reef ecosystems in the Red Sea, including data from most recent molecular studies. The Red Sea harbours a set of unique ecological characteristics, such as high temperature, high alkalinity, and high salinity, in a quasi-isolated environment. This makes it a perfect laboratory to study and understand adaptation in regard to the impact of climate change on marine ecosystems. This book can be used as a general reference, guide, or textbook.

The Arabian Seas: Biodiversity, Environmental Challenges and Conservation Measures
The Arabian Seas: Biodiversity, Environmental Challenges and Conservation Measures

Author: Laith A. Jawad

Publisher: Springer Nature

Published: 2021-03-30

Total Pages: 1377

ISBN-13: 3030515060

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The Arabian Seas Marine Region encompasses marine areas from Djibouti to Pakistan, including the northern part of Somalia, the Red Sea, the Arabian/Persian Gulf, and parts of the Arabian Sea. Human pressures on the coastal and marine environments are evident throughout the region, and have resulted in harmful environmental effects. Oil and domestic, urban and industrial pollutants in several areas of this part of the world have caused local habitat degradation, eutrophication and algal blooms. Further, coastal landfill, dredging, and sedimentation, as well as nutrient and sediment runoff from phosphate mining, agriculture and grazing, and reduction in freshwater seepage due to groundwater extraction are all contributing to the degradation of coastal environments. This book discusses aspects not covered in other books on the region, which largely focus on marine biodiversity, and examines several environmental challenges that are often ignored, but which have a significant impact on the environment. Evaluating the status quo, it also recommends conservation measures and examines the abiotic factors that play a major main role in the environmental changes. Lastly, the book addresses the biodiversity of the area, providing a general context for the conservation and management measures discussed.

Expanding Mariculture Farther Offshore
Expanding Mariculture Farther Offshore

Author: Alessandro Lovatelli

Publisher: Food & Agriculture Organization of the UN (FAO)

Published: 2013

Total Pages: 88

ISBN-13:

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It is also recommended that efforts be increased to farm lower trophic levels species and optimize feeds and feeding in order to minimize ecosystems impacts and ensure long-term sustainability. Similarly, risk assessments and/or environmental impact assessment and monitoring must always be in place before establishing offshore farms, and permanent environmental monitoring must be ensured. All coastal nations should be prepared to engage actively in developing the technological, legal and financial frameworks needed to support the future development of offshore mariculture to meet global food needs. The workshop report highlights the major opportunities and challenges for a sustainable mariculture industry to grow and further expand off the coast.