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13. GOM Times - Eelgrass: Essential or expendable in the Gulf?
- www.gulfofmaine.org
- Eelgrass: Essential or expendable in the Gulf?.
- Gulf of Maine - Reaching up through the shallows along the Atlantic coastline from North Carolina into the Canadian maritimes are long, thin, bright green blades of Zostera marina, or eelgrass. ... But a question remains whether singling out eelgrass for protection means that other equally valuable marine habitats will suffer.
- A type of seagrass that grows in beds anchored to the marine floor by intricate root systems, eelgrass reaches lengths of up to five feet. Protected coastal areas tidal rivers, bays, and estuaries that are completely covered with water and have fine-grained sediments provide the best growing area for eelgrass, which also requires light and water clarity for photosynthesis, and moderate waves and currents that prevent stagnation without uprooting the plants. Beachcombers frequently find dried, black, tangled masses of eelgrass washed ashore, marking the high tide line.
- Eelgrass protection proponents say the plants serve as refuge and nursery for juvenile finfish and shellfish, and as food for fish, invertebrates, and waterfowl. ...
- But while Bob Steneck, a professor at the University of Maine School of Marine Sciences, agrees that eelgrass is an important habitat, he is not convinced it takes precedence over others in all parts of the Gulf. ...
- Seth Barker, who is mapping eelgrass for Maine's Department of Marine Resources, said, "We really, in the Gulf of Maine, consider the question of the relative importance of eelgrass as still an open issue. ...
- Steneck asserted that eelgrass received federal protection under the US Clean Water Act which requires that any eelgrass destroyed by human activity be replaced or restored because of its role as essential fish habitat in the mid-Atlantic, not the Gulf of Maine. ... If eelgrass were crucial to the survival of fish in the Gulf, devastating results would have occurred in the 1930s, when 90 percent of the eelgrass beds in the North Atlantic region were destroyed by a marine slime mold known as the mass wasting disease, Steneck stated.
- "There is data to suggest that the great dieoff in the 1930s resulted in wildlife loss," argued US Environmental Protection Agency (EPA) marine biologist Phil Colarusso, who organizes an annual meeting of New England scientists and researchers studying eelgrass and working on restoration projects. Populations declined among bay scallops, brant geese, and the eelgrass limpet, which "went extinct as a result," he said, noting, "Since none of these are very commercially important anymore, people tend to discount them. ...
- Colarusso asserted, "We're not sacrificing other habitats to protect eelgrass. ...
- Along Maine's rocky coast, habitats that are more structurally complex than eelgrass including kelp beds, boulder fields, and cobble beds support more organisms than eelgrass does, making them more valuable than eelgrass for coastal food webs in that region, yet they are not federally protected, he explained. ...
- Threats to eelgrass numerous.
14. Eelgrass GIS Data Layers
- www.edc.uri.edu
- There are 14 eelgrass data layers from several sources and each has been categorized as either "Current" (generated after 1992) or "Historical" (generated before 1992) data. ...
- Current URI/NRS Eelgrass Polygons.
- Current URI/GSO Ninigret Pond Eelgrass Densities.
- Current URI/GSO Quonochontaug Pond Eelgrass Densities.
- Current URI/GSO Quonochontaug Pond Eelgrass Polygons .
- 2000 URI Graduate School of Oceanography general eelgrass survey of Quonochontaug Pond. ...
- Current CRMC Eelgrass Polygons .
- 1999-2000 CRMC & RIDEM shoreline eelgrass survey.
- Current CRMC Eelgrass Lines .
- 1999-2000 CRMC & RIDEM shoreline eelgrass survey.
- Current CRMC Eelgrass Points .
- 1999-2000 CRMC & RIDEM shoreline eelgrass survey.
- Current Block Island Eelgrass Lines .
- 1999-2000 CRMC & RIDEM shoreline eelgrass survey.
- Current RIDEM/F&W Eelgrass Points.
- 1999-2000 RI DEM Department of Fish & Wildlife eelgrass points taken from field observations in Narragansett Bay. ...
15. Definition of eelgrass - WordReference.com Dictionary
- www.wordreference.com
- eelgrass i:lgræs .
- eelgrass, grass_wrack, sea_wrack, Zostera_marina.
- Category Tree:entity╚object; physical_object╚living_thing; animate_thing╚organism; being╚plant; flora; plant_life╚vascular_plant; tracheophyte╚aquatic_plant; water_plant; hydrophyte; hydrophytic_plant╚eelgrass, grass_wrack, sea_wrack, Zostera_marina.
- tape_grass, eelgrass, wild_celery, Vallisneria_spiralis.
- Category Tree:entity╚object; physical_object╚living_thing; animate_thing╚organism; being╚plant; flora; plant_life╚vascular_plant; tracheophyte╚aquatic_plant; water_plant; hydrophyte; hydrophytic_plant╚tape_grass, eelgrass, wild_celery, Vallisneria_spiralis.
- Look up "eelgrass" at Merriam-Webster.
- Look up "eelgrass" at dictionary. ...
- eelgrass.
- eelgrass family.
- eelgrass: .
16. Auke Bay Laboratory Habitat Investigations - Fish Use of Eelgrass and Kelp Habitat
- www.afsc.noaa.gov
- Fish Use of Eelgrass and Kelp Habitat.
- A Comparison of Fish Assemblages in Eelgrass and Adjacent Subtidal Habitats Near Craig, Alaska. ...
- Importance of Eelgrass and Kelp as Essential Fish Habitat for Commercially Important Species in Southeast Alaska .
- Eelgrass (Zostera marina) is an important component of nearshore habitats and is widely distributed in lower intertidal and subtidal areas on both coasts of the United States and in Alaska north to the Seward Peninsula. Eelgrass provides food production and physical structure for the biological community, and is nursery habitat for many commercial fisheries species. Eelgrass meadows are designated as special aquatic sites for protection in coastal zone management. ...
- , construction of boat harbors and fish processing plants) threaten eelgrass and kelp communities via dredging or fill activities. Information is limited, especially in Alaska, on the function of eelgrass and kelp habitats as nursery and feeding areas for many commercially important fish species. The role of eelgrass and kelp as fish habitat needs to be documented to support decisions balancing development activities with conservation of essential fish habitat. ...
- From 1998 to 2000, studies by ABL examined differences in species distribution and abundance among eelgrass meadows and other subtidal habitats in Southeast Alaska. ... ) of eelgrass and kelps to commercially important species such as juvenile salmon and rockfish. Results from a mark-recapture experiment in 1999 and 2000, showed that juvenile rockfish move into shallow eelgrass and kelp habitats in May, and remain in the same local area through late summer. Growth rates of rockfish will be compared between eelgrass and kelp habitats. ... To accomplish this, we will map the area of select eelgrass meadows and sample fish once each year for the next several years.
- Eelgrass Beds.
17. Eelgrass
- www.consbio.org
- The Abundance and Distribution of Eelgrass (Zostera spp. ...
- Completed in 1996, this study used an airborne multi-spectral sensor to map eelgrass in what used to be one of the most product estuaries along the Oregon coast. ... Eelgrass beds are important habitat for salmon and other species at various times in their life history. Maintaining high-quality, abundant eelgrass beds is important to healthy salmon populations. This project, using new technology, successfully mapped eelgrass abundance and distribution for Tillamook Bay.
- In the Pacific Northwest, eelgrass (Zostra spp. ... As part of the continuing assessment of the estuarine environment, Tillamook Bay National Estuary Project undertook a study to measure eelgrass abundance and distribution throughout Tillamook Bay (30 km2 ) hoping to establish an initial baseline of eelgrass bed density and distribution and identify a means of monitoring the bay environment in terms of cover and substrate that was both accurate and cost effective. ...
- Over 300 individual images were taken during a period of maximum low tide in July 1995 in order to capture the majority of eelgrass beds exposed. ... Two densities of eelgrass beds plus a number of other vegetation classes and substrate types could be mapped for the entire bay using the results from the image classification. ...
- Eelgrass beds were found to cover nearly 11% of the area of Tillamook Bay with the majority of the dense beds (composed of mostly Zostera marina L. ... The other species of eelgrass found in the bay, Zostera japonica, was found to grow almost exclusively in the southernmost 1/3 of the bay where sedimentation is most severe. ...
- Multispectral airborne imaging proved to be an effective way to map eelgrass in the type of ecological setting found in Tillamook Bay. With some improvement in mosaicing and edgematching of the imagery, this type of technology could be a very accurate, cost-effective alternative to mapping eelgrass dynamics. ...
18. Eelgrass Transplant
- swr.ucsd.edu
- Eelgrass Transplant.
- The eelgrass transplant at the Lagoon was conducted on September 26, 29, 20 and October 1 and 2, 1997. Eelgrass was salvaged from Crown Point Shores in Mission Bay near the Northern Wildlife Preserve, Agua Hedionda, and at Glorietta Bay in San Diego Bay. ...
19. PTMSC Eelgrass Information
- www.ptmsc.org
- Eelgrass.
- What is Eelgrass?.
- What’s so Important about Eelgrass?.
- Eelgrass Lore.
- Threats to Eelgrass.
- Eelgrass Restoration.
- What is Eelgrass? .
- Underneath the PTMSC pier, long, slender, emerald-green leaves of eelgrass catch the sun and wave to and fro with the sea's constant motion. ...
- Eelgrass meadows are a vital part of nearshore food web relationships. Since the 1980's, habitat managers have been increasingly protective of eelgrass due to its importance as habitat for fish and wildlife and its vulnerability to shoreline development. Fish and shellfish which depend on eelgrass for all or part of their life cycle account for a multimillion dollar industry in Washington State alone, leading our resource managers to adopt a "no net loss" policy for eelgrass. But the importance of eelgrass goes well beyond the fisheries that it supports. ...
- Eelgrass is not a seaweed, but a flowering plant! Zostera marina (from the Greek word zoster meaning ‘belt’, describing the ribbon-shaped leaves), or Common Eelgrass, is not technically a grass, but one of a group of flowering land plants that seem to have migrated into the sea in relatively recent geologic times. Unlike their land relatives, eelgrass flowers need no elaborate shapes or bright colors to attract insects, or animals to transfer pollen from flower to flower. Hidden behind a transparent leaf sheath, eelgrass flowers are seldom seen. ...
- Eelgrass is a perennial plant that grows both by vegetative growth, i. ... Most growth of eelgrass in the Pacific Northwest is vegetative. The depth of eelgrass growth is limited by incident light and water clarity. In the Northwest, the maximum depth is about 22 feet, but in the extremely clear water off California, eelgrass has been found growing at depths of more than 100 feet.
20. Eelgrass Provides A Refuge From Predators For Some Fish Species
- www.sciencedaily.com
- Eelgrass Provides A Refuge From Predators For Some Fish Species.
- The meadows of eelgrass found in lagoons along the Atlantic seacoast have a long history of providing a habitat for fish and invertebrates of many species. Despite this long history, it has proven difficult to document and quantify the relationships between eelgrass cover and the abundance of fish and crabs on a larger scale.
- The three habitats in the study included eelgrass Zostera marina, macroalgae, and bare sediment.
- Mesocosms containing marine sediments, coastal water, and varying densities of eelgrass or macroalgae were used to simulate conditions found in shallow coastal lagoons of Rhode Island. ... Prey fish were provided in equally weighted rations and included silversides, tautog, cunner, and menhaden, all species found in local eelgrass meadows and all part of the bluefish diet.
- The scientists found that the presence of eelgrass significantly increased survival of silversides, tautog, and cunner even at very low shoot densities. ...
- "These findings confirm the hypothesis that eelgrass habitats serve a functional role as refuges from predation for some prey fish," said Harris. ...
- "Our results provide better insight into the different habitat value of eelgrass meadows. The findings support a continuation of efforts to protect and manage eelgrass meadows effectively. ...
21. Southern California Eelgrass Mitigation Policy
- swr.nmfs.noaa.gov
- SOUTHERN CALIFORNIA EELGRASS MITIGATION POLICY.
- Eelgrass (Zostera marina) vegetated areas are recognized as important ecological communities in shallow bays and estuaries because of their multiple biological and physical values. Eelgrass habitat functions as an important structural environment for resident bay and estuarine species, offering both predation refuge and a food source. Eelgrass functions as a nursery area for many commercially and recreational important finfish and shellfish species, including those that are resident within bays and estuaries, as well as oceanic species that enter estuaries to breed or spawn. Eelgrass also provides a unique habitat that supports a high diversity of non-commercially important species whose ecological roles are less well understood.
- Eelgrass is a major food source in nearshore marine systems, contributing to the system at multiple trophic levels. Eelgrass provides the greatest amount of primary production of any nearshore marine ecosystem, forming the base of detrital-based food webs and as well as providing a food source for organisms that feed directly on eelgrass leaves, such as migrating waterfowl. Eelgrass is also a source of secondary production, supporting epiphytic plants, animals, and microbial organisms that in turn are grazed upon by other invertebrates, larval and juvenile fish, and birds.
- In addition to habitat and resource attributes, eelgrass serves beneficial physical roles in bays and estuaries. Eelgrass beds dampen wave and current action, trap suspended particulates, and reduce erosion by stabilizing the sediment. ...
- In order to standardize and maintain a consistent policy regarding mitigating adverse impacts to eelgrass resources, the following policy has been developed by the Federal and State resource agencies (National Marine Fisheries Service, U. ... While the intent of this Policy is to provide a basis for consistent recommendations for projects that may impact existing eelgrass resources, there may be circumstances (e. ... This policy should be cited as the Southern California Eelgrass Mitigation Policy (revision 10).
- Eelgrass transplants shall be considered only after the normal provisions and policies regarding avoidance and minimization, as addressed in the Section 404 Mitigation Memorandum of Agreement between the Corps of Engineers and Environmental Protection Agency, have been pursued to the fullest extent possible prior to the development of any mitigation program. Mitigation will be required for the loss of existing vegetated areas, loss of potential eelgrass habitat, and/or degradation of existing/potential eelgrass habitat. ...
- Boat docks, ramps, gangways and similar structures should avoid eelgrass vegetated or potential eelgrass vegetated areas to the maximum extent feasible. If avoidance of eelgrass or potential eelgrass areas is infeasible, impacts should be minimized by utilizing, to the maximum extent feasible, construction materials that allow for greater light penetration (i. ...
22. IMAGE EELGRASS
- buccaneer.geo.orst.edu
- IMAGE EELGRASS.
- Identification_Information: Citation: Citation_Information: Originator: Earth Design Consultants Publication_Date: 19960000 Title: IMAGE EELGRASS Geospatial_Data_Presentation_Form: image Publication_Information: Publication_Place: Corvallis,OR Publisher: Earth Design Consultants Online_Linkage: <http://www. ...
- Description: Abstract: Distribution of eelgrass in Tillamook Bay using multispectral airborne imagery. ...
- 47474792 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: landcover Theme_Keyword: substrates Theme_Keyword: bay Theme_Keyword: intertidal ecosystem Theme_Keyword: eelgrass Theme_Keyword: multispectral images Theme_Keyword: image classification Theme_Keyword: subtidal .
- Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: 1 = terrestrial plants 2 = green algae 3 = dense mixed algae 4 = dense eelgrass 5 = sparse eelgrass 6 = sparse mixed algae on dark substrates 7 = sparse mixed algae on light substrates 8 = sand/gravel 9 = mud/sand 10 = organic debris 11 = developed 12 = water Entity_and_Attribute_Detail_Citation: not available .
23. The World Market for Vegetable Materials Used Primarily for Stuffing or Padding Including Kapok, Vegetable Hair, and Eelgrass: A 2005 Global Trade Perspective
- www.marketresearch.com
- The World Market for Vegetable Materials Used Primarily for Stuffing or Padding Including Kapok, Vegetable Hair, and Eelgrass: A 2005 Global Trade Perspective.
- This report was created for strategic planners, international executives and import/export managers who are concerned with the market for vegetable materials used primarily for stuffing or padding including kapok, vegetable hair, and eelgrass. ... I have developed a methodology, based on macroeconomic and trade models, to estimate the market for vegetable materials used primarily for stuffing or padding including kapok, vegetable hair, and eelgrass for those countries serving the world market via exports or supplying from various countries via imports. ...
- Which countries are supplying vegetable materials used primarily for stuffing or padding including kapok, vegetable hair, and eelgrass? What is the dollar value of these imports? How much do the imports of vegetable materials used primarily for stuffing or padding including kapok, vegetable hair, and eelgrass vary from one country to another? Do exporters serving the world market have similar market shares across the importing countries? Which countries supply the most exports of vegetable materials used primarily for stuffing or padding including kapok, vegetable hair, and eelgrass? Which countries are buying their exports? What is the value of these exports and which countries are the largest buyers?.
- In what follows, Chapter 2 begins by summarizing the regional markets for imported and exported vegetable materials used primarily for stuffing or padding including kapok, vegetable hair, and eelgrass. ...
- After the worldwide summary in Chapter 2 of both imports and exports, Chapter 3 details the exports of vegetable materials used primarily for stuffing or padding including kapok, vegetable hair, and eelgrass, for each individual country. Chapter 4 does the same, but for imports of vegetable materials used primarily for stuffing or padding including kapok, vegetable hair, and eelgrass for all countries in the world. ... Combined, Chapters 3 and 4 present the complete picture for imports and exports of vegetable materials used primarily for stuffing or padding including kapok, vegetable hair, and eelgrass to and from all major countries in the world. Of the 150 countries considered, if a country is not reported here it is therefore estimated to have only a negligible level of trade in vegetable materials used primarily for stuffing or padding including kapok, vegetable hair, and eelgrass (i. ... "Vegetable Materials Used Primarily for Stuffing or Padding Including Kapok, Vegetable Hair, and Eelgrass" as a category is defined in this report following the definition given by the United Nations Statistics Division Classification Registry using the Standard International Trade Classification, Revision 3 (SITC, Rev. ... The SITC code that defined "vegetable materials used primarily for stuffing or padding including kapok, vegetable hair, and eelgrass" is 29292. ...
- This report was created for the market for vegetable materials used primarily for stuffing or padding including kapok, vegetable hair, and eelgrass.
24. Eelgrass Photo Gallery
- www.sbck.org
- EELGRASS RESTORATION PHOTO GALLERY .
- Jack Engle, director of the Channel Islands Research Program, surveys a healthy eelgrass bed during the 1990's.
- Jack Engle and Joe Wible plant eelgrass at 33 feet.
- Steve Lee plants eelgrass in the shallow plot.
- In 2002, brittlestars heavily impacted the transplanted eelgrass.
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