Download or read book Fishery Population and Habitat Assessment in Puerto Rico Streams Phase 2 Final Report written by Thomas J. Kwak and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cooperator Science Series was initiated in 2013. Its purpose is to facilitate the archiving and retrieval of research project reports resulting primarily from investigations supported by the U.S. Fish and Wildlife Service (FWS), particularly the Wildlife and Sport Fish Restoration Program. The online format was selected to provide immediate access to science reports for FWS, state and tribal management agencies, the conservation community, and the public at large.
Download or read book Fishery Population and Habitat Assessment in Puerto Rico Streams written by Thomas J. Kwak and published by . This book was released on 2007 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sampling Attributes of Puerto Rico Stream Fishes Bias Selectivity and Environmental Influences written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Puerto Rico, an island in the Caribbean Sea, is known for its marine sport and commercial fisheries, but the freshwater habitats of the island also support a substantial number of fishes, which provide recreational and subsistence fishery values. There are about 80 fish species that inhabit Puerto Rico freshwaters. Of those, there are fewer than 10 native fish species that reside within the rivers, and they are of primary management concern. Management of these stream fish resources would be enhanced by an understanding of gear catchability, a standardized sampling method, and accurate population estimates. My primary objectives for this study were to (1) quantitatively describe gear efficiency and selectivity relationships to estimate stream fish populations in Puerto Rico; (2) evaluate population models among species using electrofishing catch results analyzed with mark-recapture and removal methods to identify the most suitable parameter-estimating model; (3) use these findings to develop a standardized stream fish sampling protocol to be applied island-wide; and (4) develop empirical, hierarchical models that describe relationships between fish catchability and instream habitat and water quality parameters for each native fish species. In my first research component, I compared two fish sampling gear types (electrofishing and seining) and four models for estimating fish population parameters (Petersen mark-recapture and removal estimators of 2â€"4 sampling passes) to provide the quantitative basis for development of a standardized sampling protocol for Puerto Rico stream fish. I found electrofishing more efficient and logistically feasible for collecting fish in these environments. I determined that three- and four-pass removal models were more accurate than the Petersen mark-recapture model or a two-pass removal model, and that accuracy was similar between three- and four-pass removal models. I investigated variations of models that account for assumption viola.
Download or read book A Global Overview of the Conservation of Freshwater Decapod Crustaceans written by Tadashi Kawai and published by Springer. This book was released on 2016-10-26 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces updated information on conservation issues, providing an overview of what is needed to advance the global conservation of freshwater decapods such as freshwater crabs, crayfish, and shrimps. Biodiversity loss in general is highest in organisms that depend on intact freshwater habitats, because freshwater ecosystems worldwide are suffering intense threats from multiple sources. Our understanding of the number and location of threatened species of decapods, and of the nature of their extinction threats has improved greatly in recent years, and has enabled the development of species conservation strategies. This volume focuses on saving threatened species from extinction, and emphasizes the importance of the successful implementation of conservation action plans through cooperation between scientists, conservationists, educators, funding agencies, policy makers, and conservation agencies.
Download or read book Basinwide Estimation of Habitat and Fish Populations in Streams written by Charles Andrew Dolloff and published by . This book was released on 1993 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monitoring Vertebrate Populations written by William L. Thompson and published by Elsevier. This book was released on 1998-08-17 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is written to serve as a general reference for biologists and resource managers with relatively little statistical training. It focuses on both basic concepts and practical applications to provide professionals with the tools needed to assess monitoring methods that can detect trends in populations. It combines classical finite population sampling designs with population enumeration procedures in a unified approach for obtaining abundance estimates for species of interest. The statistical information is presented in practical, easy-to-understand terminology. - Presented in practical, easy-to-understand terminology - Serves as a general reference for biologists and resource managers - Provides the tools needed to detect trends in populations - Introduces a unified approach for obtaining abundance estimates
Download or read book Fish Assemblage Structure in Urban Streams of Puerto Rico written by Augustin C. Engman and published by . This book was released on 2011 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Ecological Basis of Fishery Yield of the Puerto Rico Virgin Islands Insular Shelf written by Terri Jacobsen and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes seven ecological subsystems, or habitats, of the Puerto Rico-Virgin Islands insular shelf. Provides lists of species found in each habitat based on suverys dating from 1956 and, when available, estimates of density, relative abundance, and productivity.
Download or read book Fisheries Review written by and published by . This book was released on 1991 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Regulatory Amendment to the Fishery Management Plan for the Reef Fish Fishery of Puerto Rico and the U S Virgin Islands Modifying the Bajo de Sico Seasonal Closure Including a Regulatory Impact Review and an Environmental Assessment written by and published by . This book was released on 2009 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This amendment includes two management actions. Preferred Alternative 2 for Action 1 proposes to modify the seasonal closure of Bajo de Sico to a 6 month closure from October 1 through March 31 each year to provide better protection for red hind spawning aggregations, large snappers and groupers, and coral reef habitat. Sub-Alternative 2d defines the closure as prohibiting fishing for and possession of all reef fish species managed by the Caribbean Fishery Management Council (Council). Preferred Alternative 3 for Action 2 proposes to prohibit anchoring year-round in Bajo de Sico to provide further EFH [essential fish habitat] protection"--Page 1.
Download or read book Spatial and Temporal Distributions of Young of year Fish in Carite Reservoir Puerto Rico written by Michael Clinton Lloyd and published by . This book was released on 2014 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information regarding spatiotemporal trends in young-of-year (YOY) fish distributions gives managers insight into recruitment and ultimately adult population variability. In Puerto Rico, limited research has been conducted on YOY distributions with no studies addressing reservoir systems. A comparison of the efficacy of two sampling gears and an assessment of spatiotemporal distributions of YOY fish communities in a tropical reservoir were conducted. Diversity of catch between push nets and offshore light traps were similar, though species composition of catch was different between gears. Inshore light traps collected greater total numbers and diversities of the YOY fish community than offshore traps in spring and summer seasons. Catch per unit effort was greater in the spring for inshore traps whereas CPUE was greater in offshore traps in the fall. These results will allow managers to coordinate YOY fish sampling efforts for specific species with periods of peak abundance and preferred habitat.
Download or read book Fish cultural Program for Puerto Rico written by United States. Congress. House. Committee on Merchant Marine and Fisheries and published by . This book was released on 1936 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sport Fishery Abstracts written by and published by . This book was released on 1991 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishery Bulletin written by and published by . This book was released on 1996 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 1194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
