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Topic: Diadromous

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	Diadromous Fishes Symposium (Site not responding. Last check: 2007-10-29)
		This symposium will review the current state of scientific knowledge with respect to biology, ecology, and conservation of diadromous fishes (including anadromous, catadromous, potamodromous, and amphidromous species).
		The symposium theme will build upon that of the very successful 1986 American Fisheries Society symposium, Common Strategies of Anadromous and Catadromous Fishes (Dadswell et al.
		However, emphasis will be expanded to address how recent alterations to the environment and human activity have affected diadromous fishes with respect to their sustainability and role in aquatic ecosystems.
	www.anacat.ca (93 words)

	Bedford Institute of Oceanography (Site not responding. Last check: 2007-10-29)
		Scientific and technical staff of the Diadromous Fish Division are responsible for research, assessment and free passage of diadromous fish stocks inhabiting New Brunswick and Nova Scotia rivers flowing to the Bay of Fundy and Nova Scotia rivers flowing directly into the Atlantic Ocean.
		Diadromous fishes spend portions of their life in fresh water and at sea and are comprised of two distinct spawning groups.
		Diadromous fishes are international travellers, and can be found at various stages of their life cycles in the Atlantic Ocean, southward to the Sargasso Sea (American eel) and northward to the Labrador Sea and Greenland (Atlantic salmon).
	www.bio.gc.ca /research/overview/diadromous-e.html (439 words)

	Environmental Defense - What Are Diadromous Fishes?
		Diadromous fishes are species that use both marine and freshwater habitats during their life cycle.
		Larger diadromous species are naturally absent from Long Island, including Atlantic salmon, American shad and Atlantic sturgeon.
		But South Shore tributaries are important habitats for several diadromous species: Alewives and blueback herring, collectively known as "river herring," and American eel and rainbow smelt still make their way up rivers along the South Shore to reach feeding, spawning and nursery grounds.
	www.environmentaldefense.org /article.cfm?ContentID=4448 (377 words)

	CCWS Affiliated Projects \| Berghorn & Samorajczyk 1998 (Site not responding. Last check: 2007-10-29)
		The objective of this study was to survey the diadromous fishes of the Quinnipiac in order to better inform managers about the fish resources in the river.
		Nine diadromous species were targeted for this study, as we expected to capture them due to the coincidental timing of this study and their spawning migration.
		Both diadromous and freshwater fishes were captured during the study, numbering 1197 and 637 respectively, for a total of 1834 fishes.
	www.yale.edu /ccws/berghorn.html (490 words)

	ANADROMOUS FISH
		Diadromous is a general category describing fish that spend portions of their life cycles partially in fresh water and partially in salt water.
		Habitat area for diadromous fish in the New York Bight watershed declined as early as the 1800's, when free-flowing rivers were dammed and their energy harnessed to support the industrial revolution; continued habitat loss and continuous overharvesting of fishery resources have left these once substantial fisheries as fragments of their former capacities.
		The diadromous fishes of the Bight are represented by six anadromous families: Acipenseridae, Clupeidae, Moronidae, Osmeridae, Petromyzontidae, and Salmonidae; and one catadromous family, Anguillidae.
	training.fws.gov /library/pubs5/web_link/text/int_fish.htm (5519 words)

	Sherpa Guides \| Southeast \| Aquatic Fauna In Peril \| Jeopardized Southeastern Freshwater Fishes: A Search for Causes
		Diadromous fishes (those that migrate to or from the sea to spawn) are included, but euryhaline species such as Cyprinodon variegatus (sheepshead minnow) and marine fishes such as Trinectes maculatus (hogchoker) are not.
		Big river, headwater, cave, and diadromous habitats have jeopardized taxa proportional to total taxa that occur in each habitat (Table 1).
		As appears to be the case for big rivers, the number of jeopardized diadromous fishes and fish species in headwater streams and caves is approximately proportional to the number of taxa with a preference for these habitats (Table 1).
	sherpaguides.com /southeast/aquatic_fauna/chapter_4 (2186 words)

	Environmental Defense - Saving Small Fish on Long Island Will Help Big Predators, Too (Site not responding. Last check: 2007-10-29)
		As diadromous fish (species that use both marine and freshwater habitats during their lifetimes), they swim against the river's flow and help cycle nutrients back upstream that rivers have washed downstream.
		Alewives are not the only diadromous fishes that use the tributaries of Long Island's southern bays: blueback herring (also called river herring), American eel and rainbow smelt still make their way up rivers along the South Shore to reach feeding, spawning and nursery grounds.
		Indeed, some speculate that, after the stunning revival of stripers on the Atlantic coast during the 1990s, their numbers, or at least the size and quality of stripers, are compromised today because of declining forage fish populations.
	www.environmentaldefense.org /article.cfm?contentid=4447 (1993 words)

	Nearshore Fish Assemblage of the Tidal Hudson River
		This fauna is a diverse mixture of native and exotic freshwater species, diadromous (migratory between fresh and salt waters) fish, and marine strays (Barnhouse et al.
		The diadromous fishes typically dominated, by number, the nearshore assemblage during summer (Fig.
		To identify trends in the abundance of an assemblage made up of resident freshwater and estuarine species, diadromous fishes, and marine strays, data must be collected in ways that account for the dynamic qualities of the species involved.
	biology.usgs.gov /s+t/noframe/m4060.htm (1893 words)

	MERG Research- Whitebait
		We are exploiting the unique life history of New Zealand native diadromous fishes to test retention-dispersal hypotheses in the coastal zone.
		The concentration of selected elements within the otolith (the elemental fingerprint) can be used to discriminate among groups of fish that have spent at least part of their lives in different environments.
		Diadromous galaxiids are ideal models for these techniques because the individual rivers in which they originate have distinctive chemical composition, due to historical land use practices such as mining and agriculture, which is encoded within the elemental fingerprints of otoliths.
	www.pams.canterbury.ac.nz /MERG/research/whitebait.html (922 words)

	Alewife Survey (Site not responding. Last check: 2007-10-29)
		Many of these ‘diadromous’ species are fishing targets, either as food fish, bait fish, or sport fish.
		Alewives, like all diadromous species, are threatened by impacts to freshwater habitats, including blockage of migratory pathways, habitat degradation, and declining water quality.
		We are compiling these observations into a single source to help guide future projects to restore diadromous fish populations on Long Island, with an initial focus on the silvery alewives that run up into freshwaters in the springtime.
	www.estuary.cog.ny.us /Fish_Survey/surveyinfo.htm (333 words)

	Who We Are - Geographic and Biological Aspects - Diadromous Fish (Site not responding. Last check: 2007-10-29)
		Most diadromous fish live in the ocean and return to fresh water to spawn.
		Eels, which do the opposite, spawning in salt water and returning to fresh water to feed, are termed catadromous.
		After living for between five and ten years in fresh water, they return to spawn and die in the waters of the Sargasso Sea, in the southwestern part of the North Atlantic.
	www.glf.dfo-mpo.gc.ca /who-qui/part-part-1/diad-diad-e.html (219 words)

	Office of Habitat Protection Division
		In either case, these fish undergo physiological changes that allow them to survive as they migrate from freshwater to saltwater or vice versa.
		About half of all diadromous fish in the world are anadromous.
		A fascinating aspect of the American eel's life history is that they migrate thousands of miles to spawn in the Sargasso Sea, located in the mid-Atlantic Ocean, south of Bermuda and north of thell diadromous fish in the world are catadromo Bahamas.
	www.nmfs.noaa.gov /habitat/habitatprotection/anadfish/indexa.htm (1094 words)

	Kennebec Dam Removal - Switch-hitters of the Fish World
		Activities in one habitat are restricted to reproduction; the other habitat is for eating and growing.
		Around 250 fish species are considered diadromous, as are a few mollusks and crustaceans.
		Diadromous fish can be categorized as anadromous or catadromous, depending on where they spend most of their lives.
	sciencebulletins.amnh.org /biobulletin/biobulletin/story1207.html (160 words)

	Catadromy of fish
		Fishes which migrate between the ocean and freshwater as a normal part of their life cycle are called diadromous, and their migrations may take several forms.
		Catadromous fishes feed and grow in freshwaters and migrate downstream to the sea to breed, whereas anadromous fishes live most of their lives in the sea and migrate into freshwater to breed.
		At least six fishes (the estuarine round herring Cilchristella aestuatia and five gobies) are on the fringe of diadromy, as they have established separate breeding populations in both estuarine/marine and freshwater habitats and may migrate to the other biome to feed.
	www.zsd.co.za /~houtbay/hl010104.htm (2065 words)

	Diversity, distribution, and conservation status of the native freshwater fishes of the Southern United States
		The review included 662 native freshwater and diadromous fishes and 24 marine fishes that are significant components of freshwater ecosystems.
		Extinct, endangered, threatened, or vulnerable status is recognized for 28 percent (187 taxa) of southern freshwater and diadromous fishes.
		To date, 3 southern fishes are known to be extinct throughout their ranges, 2 are extirpated from the study region, and 2 others may be extinct.
	www.srs.fs.usda.gov /pubs/viewpub.jsp?index=2059 (604 words)

	Technical And Source Notes
		Capture Production: Diadromous fish refers to diadromous fish caught or trapped for commercial, industrial, and subsistence use.
		Diadromous fishes migrate between freshwater and salt water; they include: sturgeons, paddlefishes, river eels, salmons, trouts, smelt, shads, and miscellaneous diadromous fishes.
		FAO defines miscellaneous diadromous fish to include Barramundi (Giant) seaperch, Lampreys nei, Milkfish, River lamprey, Sea lamprey, Striped bass, Striped bass, hybrid, Three-spined stickleback, White bass, and White perch.
	earthtrends.wri.org /searchable_db/variablenotes.cfm?varid=24&theme=1 (758 words)

	Early Life History of Fishes Abstracts (Site not responding. Last check: 2007-10-29)
		They are also diadromous, most spawning in fresh or brackish water but maturing in marine waters.
		Like all diadromous fishes, since they shift between freshwater and marine habitats, they are vulnerable to anthropogenic influences in both realms, and consequently there have been serious declines in many species.
		Effects of damming on river biota include decimation of migratory fauna (e.g., diadromous and potamodromous fishes and crustaceans), lost fisheries, and imperilment of obligate riverine taxa.
	www.fisheries.org /html/publications/catbooks/shads.shtml (9885 words)

	NRC Faculty & Research Profile
		Haro's interests include behavior and biology of diadromous fishes, fish passage biology and engineering, and animal migration.
		Current research involves biotic and abiotic influences on fish migration, design and performance of traditional and experimental fish passage structures, development of new technologies for assessment of fish behavior and passage, and behavior of upstream and downstream migrant diadromous fishes.
		Effect of temperature, light, water velocity, turbulence, and air entrainment on behavior and passage of adult and juvenile diadromous fishes
	www.umass.edu /nrc/faculty/profile.haro.htm (275 words)

	NHDES Watershed Management Bureau: Restoration - Special Projects
		The purpose of the Winnicut Dam Removal Feasibility Study (Feasibility Study) is to evaluate options for the restoration of native diadromous and resident fisheries, including alewife and blueback herring, in the Winnicut River ecosystem.
		The restoration of the riverine habitat is particularly important for achieving project objectives associated with the restoration of rainbow smelt populations in the Winnicut River, as this species is dependent upon riverine habitat for spawning and is not capable of ascending most types of fishpass systems.
		Alternative C is the preferred option based on its ability to achieve the project goals associated with the restoration of resident and diadromous fisheries in the Winnicut River ecosystem.
	www.des.state.nh.us /Coastal/Restoration/winnicut.htm (1109 words)

	Altamaha Riverkeeper
		As part of this effort, the focus is on the Ocmulgee River and diadromous fish-fish that live part of their lives in salt water and part of their lives in fresh water.
		Unlike the shad, southern striped bass generally remain in their natal river and estuary, and refrain from making long coastal migrations.
		The Ocmulgee, like other Altamaha tributaries, once had huge annual migrations of diadromous fish that moved up to spawn as far upriver as the Alcovy and Yellow Rivers.
	www.altamahariverkeeper.org /wildlife/fish.asp (1841 words)

	Estuarine Fish
		Tributary use by diadromous fishes is covered separately by the South Shore Estuary Reserve Diadromous Fishes Draft Technical Report.
		Tidal creeks are shelter and nursery areas and the source of food for anadromous fish that spawn in the freshwater reaches.
		Inlets serve as prime migration pathways for diadromous fish, as seasonal corridors for fish movements, and as spawning zone for many estuarine dependent fishes.
	www.nyswaterfronts.com /Final_Draft_HTML/Tech_Report_HTM/Living_Resources/Estuarine_Fish/Report_EF.htm (7924 words)

	Untitled (Site not responding. Last check: 2007-10-29)
		Unique behaviors in fishes utilizing both freshwater and marine environments include anadromous fishes (incubation and juvenile rearing in freshwater, maturation at sea, and adult migration into rivers for reproduction), and the primarily marine catadromous fishes which undergo some movement and obligatory life history requirements in freshwater (McDowell 1987).
		Other less well known diadromous fishes of the central California coast include lamprey (Petromyzontidae), pipefish (Syngnathidae), smelt (Osmeridae), sculpin (Cottidae), stickleback (Gasterosteidae), herring (Clupeidae), scorpion fishes (Scorpaenidae), flounders (Pleuronectidae), and gobies (Gobiidae).
		The importance of anadromous fishes as part of the MBNMS ecosystem is poorly documented, with most scientific research and monitoring being focused on the freshwater life stages of the salmonids.
	bonita.mbnms.nos.noaa.gov /sitechar/fish1.html (333 words)

	UC Berkeley ESPM Faculty - Vincent H. Resh (Site not responding. Last check: 2007-10-29)
		The ecological studies of aquatic invertebrates involve descriptive and experimental approaches to life history studies, herbivore-plant interactions, effects of disturbance, and other topics related to population dynamics, biotic and abiotic interactions, and community structure and function.
		These studies currently are being conducted in California coastal streams and on the diadromous fauna in oceanic island streams near the UC Berkeley research station in Moorea, French Polynesia.
		In my research on habitat manipulations, emphasis has been on developing an understanding of how hydraulic forces affect the distribution of organisms, and how these forces can be modified to enhance running-water habitats in stream restoration.
	espm.berkeley.edu /directory/fac/resh_v.html (580 words)

	Lotek systems for tracking fish, birds & wildlife in salt water habitats
		Our acoustic transmitters, receivers, and archival tags can be used to gather many kinds of information on a wide range of species.
		In addition, we offer specialized solutions for tracking diadromous species as they move to and from fresh water and marine habitats.
		For diadromous species, you can use tags that transmit both radio and acoustic signals depending upon whether they are in fresh or salt water.
	www.lotek.com /marine.htm (629 words)

	Maine Department of Marine Resources, Kennebec River Diadromouse fish Restoration Project (Site not responding. Last check: 2007-10-29)
		The goal of the Kennebec River Diadromous Fish Restoration Project is to restore Maine’s native diadromous
		A second settlement agreement signed in 1998 by state and federal fisheries resource agencies, non-governmental organizations, and the KHDG resulted in the removal of Edwards Dam to provide fish passage for all diadromous species, instituted schedules or triggers for fish passage at the seven KHDG dams, and provided additional funding for the stocking program.
		Diadromous is a general term referring to fishes that migrate between the ocean and freshwater in order to complete their life cycle.
	www.maine.gov /dmr/rm/stockenhancement/kennebec/fishpass.htm (738 words)

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