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GREAT LAKESENVIRONMENTAL GichigamiGLIFWCs Great LakesSectionpersonnelareconducting a tagging study on Lake Superior this summer. The objective of the study is to determinethedepthandtemperaturethat lake trout inhabit throughout the year. Habitat information such as this gives fisheries managers a glimpse into the secretlivesoflaketroutprovidingvalu- able insights regarding climate change impacts on predator-prey dynamics habitat usage and movement behavior. A similar study using internal tags that record depth and temperature data was conducted in Lake Superior by GLIFWCs Great Lakes Section in 2001 and 2002 however the current 2015 study makes use of an external tag which also records depth and tem- perature. The main advantage of using external tags is that fish do not have to beanesthetizedduringattachmentofthe tagallowingquickertagattachmentand faster recovery time for the fish. Lake trout are captured with gill netsanduponcapturethetagisattached to the body of the fish with a harness which consists of a small steel wire that is surgically passed through the body with a needle just underneath the dorsal fin. These small external tags record the depth and temperature of a fishs location once every 10 minutes and are programmed to record this information foraboutoneyear.Whenataggedfishis captured the tag is collected and linked to a computer where the data can be transferred and analyzed. This summer nine lake trout have been tagged and released near Keweenaw Bay Michigan. Lake trout will also be tagged in Keweenaw Bay during the fall spawning season of 2015. The goal is to tag and release 100 lake trout in 2015. If you capture one of our tagged fish please keep the fish and tag and contactGLIFWCat715682-6619with information regarding your fish and to claim your reward. You can also report taggedfishathttpglifwc.orgtag.html Specific information regarding the depth and temperature distribution of laketroutisvitalespeciallywhenfisher- iesmanagersattempttoassesschangesin laketroutbehaviorinresponsetochang- ing climate conditions. However depth and temperature data alone do not paint a complete picture about how climate change may be affecting predator-prey interactions in Lake Superior. To help complete the picture we need to know what the fish are eating. In order to obtain diet informa- tion from fish the Great Lakes Section hiredfisheriestechnicianandBadRiver member Ron Parisien Jr. in April 2015 to collect stomachs from lake trout lake whitefish and lake herring. Ron accomplishes this task by riding tribal commercial fishing boats with fisher- men from the Red Cliff Bad River and Keweenaw Bay tribes. While riding on commercial boats Parisien collects fish stomachs records lengthsandweightsandextractsotoliths used for ageing. This task is not always easy as long hours on the water and adverse weather conditions often add an element of difficulty to data collec- tion. WhennotoutonthewaterParisien spendshistimeprocessingstomachcon- tents of samples that he collected from fishermen.Processingstomachsamples involves identifying counting measur- ing and weighing stomach contents the process is often time-consuming tedious and requires a good deal of patience and a strong nose but Parisien is up for the challenge. Thedatathathecollectsinaddition to information recorded by the external tags will go a long way in helping to explainlaketroutbehaviorandpredator- preyinteractionsinresponsetoachang- ing climate. PAGE 9 MAZINAIGANFALL 2015 Glimpsing the secret lives of lake trout Depth and temperature tags and diet study to tell tales By Ben Michaels GLIFWC Fisheries Biologist Baraga Mich.Over 60 community members attended KeweenawBayKBIndianCom- munitys Weaving a Sustainable Futureenvironmentalforum.The forumfeaturedinformationbooths breakout sessions and kidsactivi- ties. Breakout sessions focused on a variety of environmental issues such as land stewardship and sustainable management of treaty resources. Thebreakoutsessionsoftenled todiscussionsonhowAnishinaabe values and worldviews factor into modern environmental justice such as the importance of tribes havingaccesstofishwithfewcon- taminants due to the cultural and spiritual importance of harvesting and eating fish. The forum also providedopportunitiesforchildren to think about the environment by crafting with recyclable materials andlearninghowabutterflygarden works. Kathleen Brosemer Sault Ste. Marie Tribe environmental program manager deliveredakeynotepresentationStrategizingforTribalRenewableEnergy.The Sault Tribe is one of sixteen Climate Action Champion communities selected by theWhite House for their work in climate change adaptation.Arecently completed tribal-wide energy audit identified projects amenable to using renewable energy sources or more energy efficient equipment. Learning from the approach the Sault Tribe took to either mitigate or adapt to climate change other tribes can plan how best to successfully apply those techniques to their own communities. KBICprovidedapresentationontheirCommitteeforAlternativeandRenew- able Energys role to help the tribe face the many challenges of climate change and the impact it may have on potential future energy consumption. The forum was hosted by the KB Natural Resources Department with Great Lakes Restoration Initiative funding. Ben Michaels GLIFWC fisheries biologist prepares to attach a tag to a lake trout while Mike Plucinski GLIFWC Great Lakes fisheries technician holds the fish in place. photo by Kasey Arts GLIFWC inland fisheries section intern Inset External tags that record the depth and temperature of lake trout. photo by Ben Michaels KBIC environmental forum highlights sustainability By Jennifer Ballinger GLIFWC Outreach Specialist Kathleen Brosemer Sault Ste. Marie Tribe environmental program manager talks about how the tribe assessed their vulnerability to climate change and taken steps to address the issue and reduce pollution. photo by Jennifer Ballinger Mercury program continues under new EPA GRLI grant OdanahWis.GLIFWCsmercuryprogramhasbeentestingmercurylevels in commonly harvested fish most notably ogaa walleye in the ceded territories since1984.Withtheawardofa5-year603000GreatLakesRestorationInitiative grant from the Environmental Protection Agency this vital work will continue. The grant will allow for continued outreach and education to tribal harvesters women and children on how to safely enjoy treaty harvested fish while limiting their exposure to mercury. Many tribal members rely on ogaa and other fish that may have high levels of mercury for subsistence. It is important for them to be able to make informed decisions such as the ability to select lakes whose fish contain lower levels of mercury or know when to limit the number of ogaa meals per month. This infor- mation will sustain an important Anishinaabe lifeway and the exercise of treaty rights can continue. Approximately 350 samples of fish from Lake Superior and inland lakes in the ceded territory will be collected and analyzed annually under this grant to ensure that GLIFWCs fish consumption advice is up-to-date. The ogaa-specific mercury maps will also be updated in 2016 2018 and 2020 to reflect any changes that may occur. Current mercury maps and additional information on safe fish consumption advice can be found at httpglifwc.orgMercurymercury.html. By Jennifer Ballinger GLIFWC Outreach Specialist