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Waiopai (Vacation land ) Fish Die -off - Printable Version +- Punaweb Forum (http://punaweb.org/forum) +-- Forum: Punaweb Forums (http://punaweb.org/forum/forumdisplay.php?fid=3) +--- Forum: Punatalk (http://punaweb.org/forum/forumdisplay.php?fid=10) +--- Thread: Waiopai (Vacation land ) Fish Die -off (/showthread.php?tid=15083) |
Waiopai (Vacation land ) Fish Die -off - Opihikaobob - 11-17-2014 A good friend of mine had a friend come in town and they went to Waiopai to snorkel on Saturday but encountered hundreds of dead fish in the water. Much disturbed by this event she tried to call county officials in order to get them to respond to this event and figure out what happened. She was unsuccessful in this endeavor, but did get to save some of the dead fish for examination later, in the event she can get some "official", response. Apparently the water had a dark reddish brow look to it where the die off occurred. RE: Waiopai (Vacation land ) Fish Die -off - kimo wires - 11-17-2014 There's lots of Grandfathered Cesspools in that area. I wouldn't swim there. RE: Waiopai (Vacation land ) Fish Die -off - Obie - 11-17-2014 It was due to the extremely heavy rainfall on Friday and part of Saturday.The storm stalled over Kapoho and the amount of runoff water entering the ocean killed the fish. RE: Waiopai (Vacation land ) Fish Die -off - snorkle - 11-17-2014 Heavy rainfall can also increase the amount of non-point source pollution entering the ocean; Ag chemicals, etc. RE: Waiopai (Vacation land ) Fish Die -off - Kapohocat - 11-17-2014 Heavy runoff also changes the salinity near the inside pools temporarily. Where my koi died in the storm surge ( pond was 7 ppt, the open ocean is usually around 35ppt) from salt water inundation in a very short period of time, the opposite might happen for a very short time the opposite direction. It also happened a few years ago - maybe 3 yrs ago. RE: Waiopai (Vacation land ) Fish Die -off - HereOnThePrimalEdge - 11-17-2014 So the fish in the tide pools could have been affected by too much fresh (rain) water? RE: Waiopai (Vacation land ) Fish Die -off - Kapohocat - 11-17-2014 quote: My uneducated guess is yes in the shallow inside ponds. In the open ocean the rain would mix better and allow room for a halocline that is not in the tide pools. Halocline defination - (I had to look it up so yes Wikipedia) - "In oceanography, a halocline is a subtype of chemocline caused by a strong, vertical salinity gradient within a body of water. Because salinity (in concert with temperature) affects the density of seawater, it can play a role in its vertical stratification. Increasing salinity by one kg/m3 results in an increase of seawater density of around 0.7 kg/m RE: Waiopai (Vacation land ) Fish Die -off - Obie - 11-17-2014 The University called a little while ago and asked my wife and I to gather some dead fish so they could study them.They will pick up the fish later today. We will report back if they come to any conclusion.The area we found the fish in was well away from any houses. RE: Waiopai (Vacation land ) Fish Die -off - Wao nahele kane - 11-17-2014 " Apparently the water had a dark reddish brow look to it where the die off occurred." This is known as red tide. http://en.wikipedia.org/wiki/Red_tide Don't eat the fish. With the abnormal current temperatures around the island, storms etc. This is something that was perhaps primed to happen. It's unfortunate but also of natural causes. We have this happen often in the Pacific Northwest particularly in Puget Sound. This mostly effected the consumption of shellfish in creating toxic levels within the shellfish. Yes, the county needs to get on this and put out an advisory should the university determine the above. Don't eat any of the critters on the rocks either! RE: Waiopai (Vacation land ) Fish Die -off - HI_Someday - 11-17-2014 quote: I remember scuba diving on a beach in Carmel where a small river was flowing into a bay. When we were descending you could definitely see a horizontal layer of cloudy water (blurry seems more accurate) for the first few feet. Below that it cleared up. I always assumed it was fresh/brackish water on top and "pure" seawater below and thought "halocline". Interesting that the article says "verticle" as this was definitely horizontal. Think of a container that has oil and water: horizontal layers. Edit: Ok, I went back, re-read it and understand what they meant. Soooo nevermind! |