marine mammal Archive

Orcas and salmon in new Cascadia Scorecard


The Sightline Institute has just released a new Cascadia Scorecard that attempts to track progress towards sustainability in Cascadia, the ecoregion encompassing much of western Washington and southern British Columbia. Southern resident killer whales and chinook salmon are featured within the scorecard’s wildlife indicator along with wolves, sage grouse, and caribou. While the [...]

Fulbright talk on marine conservation in the Pacific Northwest


Notes from an annual lecture at the University of Washington, March 3, 2010, at 7pm:
“Marine conservation in the Pacific Northwest: Whales, Salmon, and Sound” by
Rob Williams, 2009-2010 Canada-US Fulbright Visiting Chair
“A scientist is someone who asks ‘what if’ questions.” — Margaret Atwood
“If you want to study whales, you should put yourself in path of the [...]

Orca refuge: a gift for endangered killer whales


This Friday, January 15, 2010, is the deadline for public comment on the proposed orca conservation area along the west side of San Juan Island. All marine conservationists should consider commenting on these precedent-setting rules: comment via email | comment via web form.  (Official background and the PDF of proposed rule are on the [...]

Chinook data needed to interpret orca baby boom


Good national news is rolling in about 5 new southern resident whales and no deaths in 2009, plus one new baby thus far in 2010. Howard, Ken, and Brad allude to looking for correlations or explanations in chinook salmon abundance:
It sounds simplistic, Garrett said, but “the way that we can tag the population fluctuations [...]

Researchers call for orca conservation zone in B.C.


Dec 23 Vancouver Sun article about a forth-coming science paper that proposes a conservation zone that overlaps with the proposed orca sanctuary boundaries:
Wildlife researchers have identified the key feeding area for a critically endangered population of killer whales near Vancouver Island and proposed the creation of a unique, miniature conservation zone for the few square [...]

First outer coast hydrophone nearly live


On December 8th the NEPTUNE Canada cabled ocean observing system started pouring data on to the Internet.  This opens the door for John Ford and his collaborators to listen for killer whales on the outer coast of southwest Vancouver Island.  The Naxys hydrophone is sensitive to 5hHz-65kHz and is located in Folger Passage at 95m [...]

+3dB noise reduces ‘effective listening area’ 30%


Jim Cummings of the Acoustic Ecology Institute has posted another great synopsis of an important new bioacoustics paper that has big implications for southern resident killer whales.  After defining a new bioacoustic metric “effective listening area” (which is MUCH more intuitive than “active space”), the authors clarify how slight increases in ambient noise can have [...]

Seattle Metropolitan on orcas raising their voices


Interesting to see the Holt et al, 2009, paper still in the popular press.  This article provides a nice summary and connects the study to the proposed orca-vessel regulations.
http://www.seattlemet.com/issues/archives/articles/orcas-salmon-1109/

Time to review Navy’s NW neighborliness


NOAA recently released an incidental take authorization associated with the Navy’s proposed expansion of the Northwest Range Training Complex.  The authorization and associated Navy documents are Complex, indeed!  Unfortunately, NOAA has allocated too little time for public comment on the .
Below I’ve quoted an inspirational letter from Fred Felleman.  Please emulate him and join me [...]

Proposed 200yd rule for orca watching boats


Received this from orcalist@noaa.gov this morning.   Deadline for public comment is 5pm on Oct. 27, 2009.  It’s noteworthy that this announcement came the day after notice that Dawn Noren published a paper that suggests that most surface active behaviors occur when vessels are within ~150 meters.
As part of the recovery program for endangered Southern [...]