Dr. Dan Bottom

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  www.digitaljournal.com/article/232132/Human_and_Salmon_ - [Cached Version]
  Published on: 9/26/2007    Last Visited: 9/26/2007  

  said Dan Bottom, a salmon biologist with NOAA Fisheries and a courtesy professor at Oregon State University.

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  www.sciencedaily.com/releases/2007/09/070923203152.htm - [Cached Version]
  Published on: 9/23/2007    Last Visited: 9/26/2007  

  According to Dan Bottom, a salmon biologist with NOAA Fisheries and a courtesy professor at Oregon State University, "the problem with the way we've managed fisheries in the past is we've tried to force a dynamic system into a static condition that actually, in the long run, makes the system much more unstable."
  
  "The natural world has adapted to disturbance," said Bottom, "so, ironically, when you try to stabilize it, for example through raising fish in a hatchery, you make it less stable."
  
  In the case of hatchery-raised salmon, produced to maintain a stable population size, one consequence is that many of these fish "are not capable of living outside that narrow range of tolerances" in which they were produced in the hatchery.
  
  "Fish raised to a uniform size all released at the same time are likely to be less flexible to the vagaries of nature," said Bottom.

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  www.subbasins.org/library/isab/isab98-3.htm - [Cached Version]
  Published on: 1/1/1997    Last Visited: 8/30/2008  

  Daniel L. Bottom, M.S., fisheries management, marine ecology, Research and Development Section, Oregon Department of Fish and Wildlife, and Center for Analysis of Environmental Change, Oregon State University

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  .: Corvallis Gazette-Times :. News - [Cached Version]
  Published on: 9/30/2003    Last Visited: 9/30/2003  

  "These shallow water habitats do lots of things," said Dan Bottom, a biologist with the National Marine Fisheries Service who is leading estuary studies in the Columbia and other rivers.
  
  The marshes support a food chain, and shaded pools and side channels offer hiding places from predators and flood torrents.
  
  Chinook salmon, in particular, make extensive use of such habitat, Bottom said.

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  .: Corvallis Gazette-Times :. News - [Cached Version]
  Published on: 4/5/2004    Last Visited: 4/5/2004  

  Guest speakers include estuarine biologist Dan Bottom, salmon biologist Jeff Rogers and hydrologist Bob Beschta.

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  96 Decline of Wild Salmon in Asia Reflects West,... - [Cached Version]
  Published on: 11/7/2001    Last Visited: 8/26/2003  

  Dan Bottom of the National Marine Fisheries Service said that southern stocks of salmon are also more susceptible to human impacts because they spawn where temperatures in rivers and streams are already warm and inhospitable.

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  BIOLOGISTS DRAFT GUIDELINES TO PROTECT FISH - [Cached Version]
  Published on: 11/7/2001    Last Visited: 11/8/2001  

  What this is starting to do is put salmon in a geographic context , said Dan Bottom , a National Marine Fisheries Service biologist based in Newport , Ore..
  
  Geographically speaking , scientists revealed a common theme for salmon populations in both Asia and North America.In both cases , the southernmost salmon and steelhead populations were the most troubled.In one sense , that's not surprising , as it represents the edge of the cold-water fish's natural range.But it's also the point where the most people choose to live and , therefore , where salmon suffer the most from habitat degradation.
  
  Channelization , agriculture , logging and urban development have impinged on stream habitat on both sides of the Pacific , scientists noted.

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  CCCC -- Participants - [Cached Version]
  Published on: 6/27/2003    Last Visited: 6/28/2005  

  Dr. Daniel Bottom Oregon Department of Fish and Wildlife 850 SW 15th St. Corvallis, OR 97333

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  California State Grange Online - [Cached Version]
  Published on: 2/5/2003    Last Visited: 11/28/2005  

  Another important presentation during the Plenary session was from National Marine Fisheries Service (NMFS) scientist, Dan Bottom.His presentation dealt with the "bottleneck theory" of salmon production.
  ...
  Dan Bottom, NMFS:
  
  The big question in my mind that Dan's presentation raised was whether hatcheries can play a role in the recovery of fish.It seems that hatchery technology and knowledge can evolve to address genetic, behavioral and habitat-related diversity to help augment recovery efforts.My point to him was that it seems we can have a goal in mind of sufficient numbers of naturally spawning fish, and get there faster with the aid of some sort of hatchery program designed around the critical factors he outlined in his presentation.Fortunately, he agreed.He and I also agreed that there are those to whom hatcheries are the most dire of evils and are to be avoided at any cost and that these people would be the greatest impediment to the development of a functional hatchery program.
  
  I suggested that such a program would rely on temporary, low-impact facilities scattered throughout the spawning range designed to optimize successful emergence, rearing and out-migration.This program would utilize sub-watersheds and stream reaches that meet suitable habitat requirements and where fish would not meet insurmountable obstacles downstream on their way to the sea.Hatchery management would incorporate practices that maximize diversity, yet be based on genetic stock closest to what is regarded as "native" to the area.Dan agreed that this is possible and, in fact, experimental efforts are being made in this regard.

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  Climate & PDO - [Cached Version]
  Published on: 9/7/1999    Last Visited: 7/1/2005  

  "What we are seeing so far is evidence of physical conditions that could yield biological results," said Daniel L. Bottom of the Oregon Department of Fish and Wildlife.Bottom and the other scientists spoke at the first conference on ocean conditions ever held by the Northwest Power Planning Council, an organization of four Northwest states charged with balancing the needs of fish and wildlife in the Columbia Basin with power production at federal hydropower dams.

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