Download or read book Critical Habitats of Atlantic Sturgeon written by Marine Resources Research Institute (S.C.) and published by . This book was released on 1999 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Critical Habitats for Recovering the Chesapeake Bay Atlantic Sturgeon Distinct Population Segment written by Bob Greenlee and published by . This book was released on 2017 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: The states of Virginia and Maryland along with Virginia Commonwealth University (VCU), Virginia Institute of Marine Science (VIMS) and University of Maryland Center for Environmental Science (UMCES) partnered to assess critical habitat for recovering the Chesapeake Bay Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) distinct population segment. The primary objectives were to assess reproductive habitat in the James River, nursery habitat in the James and York Rivers and the degree of dependence of those populations to habitat in the Chesapeake Bay.
Download or read book Identification of Critical Habitat Requirements of Shortnose Sturgeon in South Carolina written by Theodore Isaac Jogues Smith and published by . This book was released on 1993 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Endangered and Threatened Wildlife and Plants Threatened and Endangered Status for Distinct Population Segments of Atlantic Sturgeon Us National Oceanic and Atmospheric Administration Regulation Noaa 2018 Edition written by The Law Library and published by Independently Published. This book was released on 2019-01-04 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Law Library presents the complete text of the Endangered and Threatened Wildlife and Plants - Threatened and Endangered Status for Distinct Population Segments of Atlantic Sturgeon (US National Oceanic and Atmospheric Administration Regulation) (NOAA) (2018 Edition). Updated as of May 29, 2018 We, NMFS, are issuing a final determination to list the Gulf of Maine (GOM) Distinct Population Segment (DPS) of Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) as a threatened species under the Endangered Species Act (ESA), and the New York Bight (NYB) and Chesapeake Bay (CB) DPSs of Atlantic sturgeon as endangered species under the ESA. We have proposed protective regulations for the GOM DPS in accordance with ESA section 4(d) in a separate rulemaking published in the Federal Register on June 10, 2011. We are currently considering the available information in order to designate critical habitat. With this rule, we are also soliciting information that may be relevant to the designation of critical habitat for all three DPSs in the Northeast Region. Details of our analyses, their outcome, and a request for public comment on our proposed critical habitat designations will be published in subsequent Federal Register documents. This ebook contains: - The complete text of the Endangered and Threatened Wildlife and Plants - Threatened and Endangered Status for Distinct Population Segments of Atlantic Sturgeon (US National Oceanic and Atmospheric Administration Regulation) (NOAA) (2018 Edition) - A dynamic table of content linking to each section - A table of contents in introduction presenting a general overview of the structure
Download or read book Atlantic Sturgeon Acipenser Oxyrinchus Oxyrinchus in the New York Bight DPS Identification of Critical Habitat and Rates of Interbasin Exchange written by Dewayne Allen Fox and published by . This book was released on 2010 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Endangered and Threatened Species Designation of Critical Habitat for Endangered New York Bight Chesapeake Bay Us National Oceanic and Atmospheric Administration Regulation Noaa 2018 Edition written by The Law Library and published by Independently Published. This book was released on 2019 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Law Library presents the complete text of the Endangered and Threatened Species - Designation of Critical Habitat for Endangered New York Bight, Chesapeake Bay (US National Oceanic and Atmospheric Administration Regulation) (NOAA) (2018 Edition). Updated as of May 29, 2018 We (NMFS) are issuing this final rule to designate critical habitat for the threatened Gulf of Maine distinct population segment (DPS) of Atlantic sturgeon, the endangered New York Bight DPS of Atlantic sturgeon, the endangered Chesapeake Bay DPS of Atlantic sturgeon, the endangered Carolina DPS of Atlantic sturgeon and the endangered South Atlantic DPS of Atlantic sturgeon pursuant to the Endangered Species Act (ESA). Specific occupied areas designated as critical habitat for the Gulf of Maine DPS of Atlantic sturgeon contain approximately 244 kilometers (km; 152 miles) of aquatic habitat in the following rivers of Maine, New Hampshire, and Massachusetts: Penobscot, Kennebec, Androscoggin, Piscataqua, Cocheco, Salmon Falls, and Merrimack. Specific occupied areas designated as critical habitat for the New York Bight DPS of Atlantic sturgeon contain approximately 547 km (340 miles) of aquatic habitat in the following rivers of Connecticut, Massachusetts, New York, New Jersey, Pennsylvania, and Delaware: Connecticut, Housatonic, Hudson, and Delaware. Specific occupied areas designated as critical habitat for the Chesapeake Bay DPS of Atlantic sturgeon contain approximately 773 km (480 miles) of aquatic habitat in the following rivers of Maryland, Virginia, and the District of Columbia: Potomac, Rappahannock, York, Pamunkey, Mattaponi, James, Nanticoke, and the following other water body: Marshyhope Creek. Specific occupied areas designated as critical habitat for the Carolina DPS of Atlantic sturgeon contain approximately 1,939 km (1,205 miles) of aquatic habitat in the following rivers of North Carolina and South Carolina: Roanoke, Tar-Pamlico, Neuse, Cape Fear, Northeast Cape Fear, Waccamaw, Pee Dee, Black, Santee, North Santee, South Santee, and Cooper, and the following other water body: Bull Creek. Specific occupied areas designated as critical habitat for the South Atlantic DPS of Atlantic sturgeon contain approximately 2,883 km (1,791 miles) of aquatic habitat in the following rivers of South Carolina, Georgia, and Florida: Edisto, Combahee-Salkehatchie, Savannah, Ogeechee, Altamaha, Ocmulgee, Oconee, Satilla, and St. Marys Rivers. This ebook contains: - The complete text of the Endangered and Threatened Species - Designation of Critical Habitat for Endangered New York Bight, Chesapeake Bay (US National Oceanic and Atmospheric Administration Regulation) (NOAA) (2018 Edition) - A dynamic table of content linking to each section - A table of contents in introduction presenting a general overview of the structure
Download or read book Abundance of Sub adult Atlantic Sturgeon and Areas of Concentration Within the Lower Delaware River written by Craig A. Shirey and published by . This book was released on 1997 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The Delaware Division of Fish and Wildlife initiated this study to address questions that were raised by the Atlantic sturgeon tagging program in the lower Delaware River from 1991 through 1995 (Shirey 1996). The tagging program was successful in documenting sturgeon migrations outside the Delaware River and in revealing trends of abundance of sub-adult Atlantic sturgeon in the lower Delaware River. However, other information such as daily, intertidal, and seasonal movement within the estuary remained unknown. This study was initiated to attempt to locate other important Atlantic sturgeon habits within the lower Delaware River and hopefully gain insight into inter-tidal movements. The abundance monitoring and tagging were also continued to maintain the database and time series on sturgeon abundance established in 1991. The data collected in this program will be useful in determining long-term trends in abundance while at the same time providing additional information on critical habitat usage within the Delaware Estuary. Sampling programs which can monitor the abundance of young sturgeons are important to document recent spawning success and future recruitment potential into the adult spawning stock. Critical habitats can be protected from possible impact and degradation."--Introduction, p.1.
Download or read book Habitat Utilization of Atlantic Sturgeon Acipenser Oxyrinchus Oxyrinchus in the Delaware River Bay and Coastal Atlantic Ocean written by Matthew W. Breece and published by . This book was released on 2017 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Animals utilize various environments throughout their life cycle to optimize growth, fitness, and survival. These environments are their habitats. As the lifecycle of an organism progresses, the resources needed, and thus the habitats preferred will change to fulfill the new requirements of the given life history stage. Resource needs for many organisms will also vary seasonally in both composition and specificity requiring organisms to shift their habitats to fulfill changing needs throughout the year. Incorporating species occurrence observations and environmental properties enables species distribution models to reliably estimate habitat locations. Destruction of habitat and overfishing beginning in the late 19th century severely depleted Atlantic Sturgeon populations. Subsequent to the boom and bust period of exploitation, there has been minimal fishing pressure and improving habitats. However, lack of recovery led to the 2012 listing of Atlantic Sturgeon under the Endangered Species Act. In this dissertation I utilize various sources of environmental data, species distribution modeling, and acoustic biotelemetry to gain insight into the occurrence and habitat use of adult Atlantic Sturgeon to further their protection and promote efficient resource management. ☐ To estimate adult Atlantic sturgeon spatial distributions during riverine occupancy in the Delaware River, I utilized a maximum entropy approach along with passive biotelemetry during the likely spawning season. I found that substrate composition and distance from the salt front significantly influenced the locations of adult Atlantic Sturgeon in the Delaware River. The movement of the salt front upstream as a result of dredging and climate change likely eliminated historic spawning habitats and currently threatens areas where Atlantic Sturgeon spawning may still be taking place. ☐ In the Delaware Bay I found that movement and residency patterns were driven primarily by depth, bottom temperature, and location. These findings revealed that as temperatures warm in the summer Atlantic Sturgeon maintain residency in deep areas near the mouth of the Delaware Bay where upwelling offshore waters keep bottom temperatures cooler than surrounding area. As water temperatures begin to cool in the fall this pattern of residency turns back into movement. ☐ By placing Atlantic Sturgeon in the context of dynamic, objective, and globally conservative seascapes, in a manner similar to landscape partitioning in the terrestrial environment, I was able to link Atlantic Sturgeon occurrence to one particular seascape associated with terrigenous input during their spring migration. To verify the seascape findings from the passive acoustic array I deployed an autonomous underwater vehicle to dynamically sample the seascape distribution in the coastal ocean to confirm the original hypothesis of selection for a given seascape. ☐ To expand the prediction of Atlantic Sturgeon occurrence for the entire seasonal cycle I matched fisheries independent biotelemetry observations of Atlantic Sturgeon with daily satellite observations to construct a time resolved spatial distribution model of Atlantic Sturgeon. I determined that depth, day-of-year, sea surface temperature, and light absorption by seawater are the most important predictors of Atlantic sturgeon occurrence. I found strong spatial differences in spring and fall migration patterns, when anthropogenic interactions peak. Cross-validated models correctly identified > 88% of biotelemetry observations in this study region and my models also correctly identified ~67% of fisheries dependent observations throughout the year. However, during their migrations, when harmful interactions were highest, models correctly identified ~91% of fisheries dependent observations. ☐ The Delaware Bay and River once supported the largest population of sturgeon in North America but due to anthropogenic impacts this population segment is severely depleted. Recent measures have aided to stabilize Atlantic Sturgeon populations but without further protection for habitats, such as those highlighted by this dissertation, recovery may never be realized. I strongly suggest that the dynamic models created in this body of work be used for guidance to managers and stakeholders to reduce interactions with this highly imperiled species thereby enhancing conservation and recovery efforts.
Download or read book 2017 CFR Annual Print Title 50 Wildlife and Fisheries Parts 200 to 227 written by Office of The Federal Register and published by IntraWEB, LLC and Claitor's Law Publishing. This book was released on 2017-07-01 with total page 1078 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Essential Spawning Habitat for Atlantic Sturgeon in the James River Virginia written by Geoffrey Austin and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Substrate composition plays a critical role in determining the spawning success of Atlantic sturgeon. A benthic analysis of the tidal freshwater portion of the James River, Virginia, was performed to locate and protect remaining sturgeon spawning habitat within the James River system. I modeled structural habitat, substrate distribution, and river bathymetry from Richmond, Virginia to the Appomattox River confluence. A classification model was developed to describe the dominant substrate type (mud/silt, sand, gravel, bedrock) using side scan sonar data collected from August 2011-Febuary 2012. River depth, bottom imagery, substrate density (hardness), and ground truth substrate samples were interpolated into a GIS model to spatially describe and quantify essential sturgeon spawning habitat. Finally, I attempted a change analysis of historical substrate composition throughout the study area. Gravel, cobble, and bedrock, swept clean of silt or mud, was deemed a hard bottom substrate suitable for spawning success. Mud and silt dominated the vast majority of river substrate, representing approximately 67 % of river bottom surveyed. Sand comprised 17 % of river bottom, gravel represented 11 % and bedrock represented 5 %. Sixteen percent of the reach was hard bottom habitat consisting of a bed substrate dominated by gravel, cobble, or bedrock. Regions of hard bottom habitat found at depths [greater than or equal to] 10 m were selected to model essential sturgeon spawning habitat. The river bottom within the reach contained approximately 8 % essential spawning habitat. The majority of hard bottom habitat was located in major bends of the river where scouring occurs. The historical comparison of available hard bottom habitat identified a 28 % loss of hard bottom since 1853. The greatest losses in hard bottom occurred in the upper portions of the study area (55 % loss in hard bottom habitat). Hard bottom habitat lost in the lower portion of the study area was partially offset by the creation of new hard bottom habitat within the narrow channel cuts bypassing Jones Neck and Turkey Island. Historical comparison of the Hatcher Island, Turkey Island, and Jones Neck oxbows identified heavy siltation and reduced depths likely due to anthropogenic alterations in the meander bends linked to shipping channel creation. The altered flow regime has resulted in increased sedimentation and has drastically reduced available hard bottom substrate within the natural channel of Jones Neck and Turkey Island. The increased availability of hard bottom habitat within the confines of the shipping channel has indicated that the alteration of the river bottom, through flow modification and dredging practices, may have replaced a portion of lost historical spawning habitat. Fisheries managers could use the data from the substrate analysis to better understand and protect essential areas necessary for Atlantic sturgeon spawning success.
Download or read book Species Profiles written by Carter Rowell Gilbert 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 Environmental Assessment Issuance of a Protected Species Cooperative Conservation Grant to the Delaware Division of Fisheries and Wildlife Award No NAIONMF4720030 to Conduct Research on Atlantic Sturgeon written by United States. National Marine Fisheries Service. Office of Protected Resources and published by . This book was released on 2010 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The current EA analyzed the effects of the proposed Atlantic sturgeon research, which will be conducted in the Delaware River and estuary and the Connecticut River and adjacent to Long Island Sound. Specifically, the proposed work would involve identification and assessment of spawning and other habitats for both sturgeon species in the Delaware River; analysis of the distribution and habitat use of juvenile Atlantic sturgeon in Delaware and New Jersey; analysis of the abundance, distribution, and habitat use of both species in Connecticut waters, including near shore marine waters; analysis of interbasin exchange rates of adult Atlantic sturgeon within the New York Bight distinct population segment (DPS) as defined by NMFS (NMFS, 2007); development of spatial models for sturgeon in the mid-Atlantic region; development of an Atlantic Coast telemetry database (the Atlantic Cooperative Telemetry (ACT) Network); and participation in multiple types of stakeholder outreach efforts. Such data and information sharing is critical for recovery planning, and in particular, for identifying appropriate management units and critical habitats. . The proposed action analyzed in the EA would not have significant environmental effects on the target or non-target species; public health and safety would not affected; no unique geographic area would be affected; and the effects of this study would not be highly uncertain, nor would they involve unique or unknown risks. Issuance of this permit would not set a precedent for future actions with significant effects, nor would it represent a decision in principle about a future consideration. There would not be individually insignificant but cumulatively significant impacts associated with the proposed action, and there would not be adverse effects on historic resources. The permit would contain mitigating measures to avoid unnecessary stress to the subject animals"--Cover letter summary.
Download or read book Atlantic Sturgeon written by Michael J. Van Den Avyle and published by . This book was released on 1984 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anadromous Sturgeons written by Jean Munro and published by . This book was released on 2007 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of their threatened status, sturgeons have been the focus of broad scientific interest. This book provides new information on freshwater, estuarine, and marine habitats of anadromous sturgeons; examines threats to habitats and populations; and reviews management and population trends in light of progress on recovery of U.S. Atlantic sturgeon populations since fishing was banned.
Download or read book Federal Register written by and published by . This book was released on 2017 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tale of a Great White Fish written by Maggie de Vries and published by Greystone Books Ltd. This book was released on 2010-02 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Follows the adventures of Big Fish, a 177-year-old sturgeon living in British Columbia's Fraser River, who during her very long life endures and survives such catastrophes as rock slides, lake drainages, and sport fishermen.
Download or read book Depth Preferences of Sturgeon In Critical Habitat written by Elizabeth A. Dunbar and published by . This book was released on 2015 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
