StructureSpot

Effort to save Columbia River salmon becomes an unexpected bird battle

Trouble in seabird paradise

A government effort to save Columbia River salmon becomes an unexpected bird battle, forcing scientists to consider a flock of new questions and options after nature shows its unpredictable side.

Thousands of these double-crested cormorants have settled on East Sand Island in the Columbia River, helping to turn what was supposed to be a peaceful home to a large, relocated colony of Caspian terns into a salmon-gobbling war zone of sorts in the battle to protect threatened fish.

 Thousands of these double-crested cormorants have settled on East Sand Island in the Columbia River, helping to turn what was supposed to be a peaceful home to a large, relocated colony of Caspian terns into a salmon-gobbling war zone Continue reading “Effort to save Columbia River salmon becomes an unexpected bird battle”

$10,000 boost toward its salmon enhancement

Kokish River Hatchery gets $10,000 donation

N-kokish-hatchery-donation-31.jpg

Ed Bennett of the Port McNeill Chinook Club holds a ceremonial cheque during a presentation by five North Island businesses Friday at the Kokish River Hatchery near Port McNeill.

Photo submitted

The Kokish River Hatchery received a $10,000 boost toward its salmon enhancement efforts Friday, thanks to Continue reading “$10,000 boost toward its salmon enhancement”

Oregon needs fish habitat

Fish habitat project planned on Beaver Creek is combined effort

Posted: Wednesday, Aug 3rd, 2011

Jason Kirchner, ODFW habitat restoration biologist, surveys Beaver Creek prior to the placement of large woody debris to improve fish habitat. (Courtesy photo)

This month, the Oregon Department of Fish and Wildlife and the Lincoln Soil and Water Conservation District will place 60 Continue reading “Oregon needs fish habitat”

Q&A with Ted Danson, author of ‘Oceana’

Q&A with Ted Danson, author of ‘Oceana’

Actor and activist says oceans can recover from overfishing and acidification, but only with our help.

Tue, May 03 2011 at 7:38 AM EST
mug of Ted DansonPhoto: Kate Danson
MNN: What is this book about and why did you decide to write it?
Ted Danson: This book is about the crisis in ouroceans: How did we get here and how do we bring it back to abundance and health. I decided to finally sit down and write it because science is saying we are coming to a tipping point. And science also shows that our oceans can bounce back if we make some necessary changes. People should read this book and be worried about the state of the oceans but they should also walk away feeling hopeful and empowered, knowing that we still have time to solve this problem.
What influenced your dedication to the oceans growing up?
My father was an anthropologist and my mother was a very spiritual person. They taught me that we are part of the world we live in and that we have to understand it and be good stewards. I also had the benefit of having Hopi friends as a kid in Arizona and their appreciation for the natural world had a great influence on me. And while I grew up in Arizona, I always enjoyed the ocean on visits to see family in California. I had a very vivid dream when I was 7 years old. I had a high fever and I woke up screaming and I ran into my parents’ room. They asked me what was wrong and I described my nightmare. I was sitting on the beach and God’s voice said, “Ted, you have one hour to enter the oceans into this bucket,” and then he gave me a spoon with holes in it. Typical young actor’s megalomania in development, maybe, but you’d have to say I’ve been thinking about the oceans for many years!

Why did you feel the need to become an ocean activist?

During my fifth season doing “Cheers” I was living in Santa Monica. I was taking a walk with my daughters on the beach and we came to a sign that read: “Water polluted, no swimming.” I didn’t know how to explain to them why the beach was closed. That was my call to action.
What was the first issue you took on as an ocean activist and what are some of the lessons you learned during those early years of activism?
In the 1980s, the debate on offshore drilling was starting up again. Occidental Petroleum was attempting to start slant drilling off the coast of Malibu. With the help of my friend Robert Sulnick, we set out to protect our coast from offshore drilling — and won. And, then we realized we could do a lot more and started our own oceans organization, American Oceans Campaign. During those early years I learned how much hard work it takes to be successful. I also learned that in order to be effective in conservation you need to rely on science. I have been so lucky to have been able to work with some of the finest ocean scientists and experts in the world.
What is the state of fisheries around the world today?
Eighty percent of seafood fisheries are at their limit of exploitation or already in collapse. We are destroying the oceans from the top down and from the bottom up, and not giving them a chance to recover. We overfish using illegal and destructive methods to take out too many fish. Ninety percent of the large predator fish — sharks, tuna, marlin — in the oceans have disappeared. Carbon emissions cause climate change and ocean acidification, which attacks the lowest level of the food chain, harming coral reefs and killing off food that’s critical for the ocean ecosystem.
How is industrial fishing destroying our oceans and hurting the livelihood of people that depend on the ocean?
The global fishing fleet is estimated to be 2.5 times larger than what the oceans can sustain. Too often, destructive gear is used that kills everything its path. Industrial fishing ships with huge nets catch and kill marine life — dolphins, sea turtles, birds. Bottom trawlers destroy deep sea coral and other seafloor habitats, which provide critical nurseries and feeding grounds for innumerable fish and shellfish species. Destructive fishing also jeopardizes the millions of small-scale fishermen and others who have depended on the oceans for their livelihood for generations. It also threatens the nearly 3 billion people in the world who rely on animal protein that comes from the sea.
Despite all of this, you see this as a pro-fishing book. Can you explain?
I want fishermen to be able to make a living for years to come. And, I want my grandchildren to enjoy fresh, healthy seafood that comes from an abundant ocean. I also want the more than three billion people who depend on fish as a major source of animal protein to be able to continue to do so. Many fishermen know their catch is shrinking. I have spoken with fishermen over the years — some are featured in the book — and they understand, and many support, that changes need to be made in the industry to let the fish populations recover.
Can you still eat seafood while being an advocate for the ocean? Do you still eat seafood?
I love to eat seafood. We should all be able to eat seafood if we choose, and for many people it is a major source of protein. I want people to continue to be able to rely on eating seafood. But we need to start fishing smart and also eating smart. The easiest way to do this is to ask questions. What kind of fish is it? Where was it caught? How was it caught? Was it farmed? Where was it farmed? One good rule of thumb is to try and eat locally caught seafood if you don’t have any more information. And, get a seafood guide. You can find them at Oceana.org and other organizations.
What is seafood fraud and how does it affect consumers?
Seafood fraud has been discovered across the United States — less expensive fish like tilapia have been passed off as grouper and red snapper, for example. It is a disturbing trend and most people don’t know they have been lied to and ripped off, and it disguises the fact that overfishing is taking place. This creates an illusion that we have an endless supply of fish when in actuality, many of these species are on the brink of collapse. The fraud undermines efforts to convince the restaurant-going/supermarket-shopping public that overfishing is a real concern. How can you believe that grouper is at risk when you can have a so-called grouper sandwich every day?
What are fishing subsidies and how do they affect the taxpaying public?
Subsidies are payments governments make to fishing companies to keep fishing. They pay for fuel, nets, trawls and even the vessels themselves. They are paying fishing boats to overfish.  Subsidies pay to maintain a global fishing fleet two-and-a-half times the capacity the oceans can sustain. This is less an issue in the U.S. Tax money pays to catch the fish, then we pay to eat the fish and we are destroying the oceans in the process, which makes the prices for fish higher.
What are flags of convenience and why are they dangerous?
Fishing ship owners flag vessels in places like Panama, the Marshall Islands or Bolivia. The ships then don’t have to adhere to stricter maritime laws from other nations. These boats can catch as many fish as they want in any manner they want. This practice leads to a more startling problem as well. These vessels skirt human rights laws and end up forcing their crew to work long hours in inhumane conditions while making pennies in comparison to the value of their catch.
How does fish farming affect the oceans and our own health?
Fish farming creates more pollution and overfishing pressure around the world. Irresponsible fish farms pollute with fish waste and introduce dangerous chemicals into the food chain (that we then can ingest). It takes up to 5 pounds of smaller fish — all of which are important species to the marine environment and many of which are edible for humans — to create 1 pound of farmed salmon, resulting in a net loss of protein.
How are offshore drilling and climate change related to the failing health of the oceans?
Offshore drilling can pollute the ocean even when there are no accidents because of how it takes place and the many opportunities for oil to end up in the sea. Drilling in the oceans continues to enable our dependence on oil and puts more carbon dioxide into our atmosphere, which leads to rising ocean temperatures and acidification.
What is ocean acidification?
We have filled our atmosphere, and our oceans, with carbon dioxide. As a result, the oceans’ pH balance is out of whack, and the water is becoming more acidic. Acidification prevents animals that build shells and skeletons out of calcium from doing so. Those animals, such as krill and coral reefs for example, are the heart of the ocean food web. Corals provide a home for 25 percent of marine life.
Considering your start in conservation, what were some of your thoughts as you learned about the Gulf of Mexico oil spill?
I was upset for the people in the Gulf. It didn’t need to happen again. This is the same cycle we have seen since the Santa Barbara spill in 1969. We have an oil spill. We react and stop offshore drilling. We are then lulled into a false sense of security because there has not been an accident in years. We loosen regulations. There is another disaster. I am hopeful that we can fix this, though.
What has happened since the BP spill and what still needs to happen?
The Obama administration has removed most of the U.S. coastline from drilling plans, except where drilling is already taking place and part of the Arctic. It’s a step forward, but it’s not enough. Offshore drilling will never be 100-percent accident-free, and we need better monitoring of the oil rigs that are still out on the water. We also need to have a strong commitment to invest in and implement clean energy technology — offshore wind has the potential to generate 30 percent more electricity than offshore oil and gas resources combined.
What can be done to bring the oceans back to health? What can individuals do in their everyday lives to help the oceans?
We need active enforcement of laws already on the books, and governments must stop distributing fishing subsidies that allow overfishing. We need a reduction in the size of the fishing fleet and the most harmful fishing gear should be eliminated. Nations around the world also need to protect habitat and allow fish populations to bounce back. Groups that manage fisheries internationally need to start protecting some of the species that are at risk like bluefin tuna, sharks, swordfish and forage species like krill. As for individuals, my first piece of advice would be to go and enjoy the oceans. Go for a walk on the beach, surf, fish, swim, boat, whatever you like. The more of us that are connected to the oceans the better. And, getting involved is fun and you can make a difference. You can join a group that works on ocean issues, like Oceana. Vote for representatives that want to improve the ocean’s health. And you can eat sustainable seafood and avoid products that are harmful to the oceans. We also need to manage what we put in the environment by reducing our plastic use and conserving our energy use.
Are you optimistic about the future of our oceans?
Yes, I am optimistic, and here’s why: The oceans are resilient. Fish populations can bounce back if given a breather from intense fishing pressure. And, I’ve been doing this for years and I am so impressed by how many more people are becoming aware of the importance of conservation all the time. Most of the oceans’ most vibrant ecosystems — coral reefs, for example — are near coastlines, and people are motivated to save them. We are getting the will, and now we just have to find the way.
This Q&A was provided by Rodale Books, publisher of “Oceana.”

 

Increasing Fish Production

Ohio Pond Management
Increasing Fish Production
Methods of Increasing Fish Production
Fertilization
Artificial Feeding
Adding Fish Habitat Structures

Pond owners should view their ponds as selfsustaining bodies of water that are capable of providing all of the ingredients necessary for good fish production. The amount of fishes that can be harvested depends upon a pond’s ability to produce them, and this amount varies from pond to pond. Ohio ponds can often support up to 250 pounds of fish per acre, although this amount is generally less for ponds that are smaller than one acre. If a pond’s normal fish production is less than what the pond owner deems acceptable, it may be possible to enhance production.

The most effective methods to artificially increase fish production are pond fertilization and fish feeding (pellet feeding pictured). However, each of these methods can also cause pond problems, so pond owners should consider them only after carefully weighing the trade offs associated with trying to increase fish production.

Fertilization
Fertilization can improve fish production by increasing the production of tiny plants and animals at the bottom of the food chain, the phytoplankton and zooplankton. This increase in production at the bottom of the food web may ultimately translate into improved growth and production of sport fish. However, negative impacts from fertilization can also result if the added nutrients stimulate growth of undesirable types of aquatic vegetation and algae. Whereas excess vegetation can be a problem to anglers and swimmers during warm weather months, it can also make the pond more susceptible to fish kills due to a build-up of dead and decaying plant material. The pond owner may find that the cost of fertilizer, effort to maintain a fertilization program, and risk of fish kills outweigh the benefits of the increase in fish harvested.

Most ponds in Ohio are adequately supplied with nutrients from the surrounding watershed and should not require artificial fertilization. In fact, many ponds receive so many nutrients from the watershed alone that problems develop with growth of excess vegetation and reductions in water quality. The following criteria should be met if a pond is to be considered for fertilization: 1) the watershed to pond ratio is less than 20 acres of watershed per surface acre of pond, 2) the watershed consists primarily of woodland acreage with soils that are low in fertility, and 3) the pond has a minimal amount of shallow water and most of the shoreline has the recommended 3:1 slope to discourage the growth of aquatic vegetation. Ponds without these characteristics should not be fertilized.

If fertilization is appropriate, then the pond owner needs to proceed with the proper treatment applied on a careful schedule. The recommended procedure is monthly applications of liquid fertilizers 10-34-0 (N-P-K) applied at the rate of two gallons per surface acre. Treatments should begin when water temperatures reach 60°F in the spring, and stop when water temperatures drop below 60°F in the fall. Fertilization should be temporarily halted when water temperatures exceed 80°F during the summer. Dilute each gallon of fertilizer with 10 gallons of water and spray the mixture evenly over the pond surface. Water clarity is a simple and convenient way to measure the progress of a fertilization program. The water clarity should be monitored twice each month throughout the fertilization season. This is easily accomplished by simply lowering a white object into the pond, such as a coffee mug on the end of a string. The white object should be visible to at least 18 inches below the water’s surface. If the object is not visible down to 18 inches, overfertilization may be a problem. In this case, postpone the next fertilizer treatment until the water has cleared somewhat and remeasure water clarity.

Artificial Feeding
Feeding is the most direct and reliable method to increase production of bluegills and channel catfish in ponds that are less than five acres. Proper artificial feeding will increase fish growth and provide larger fish for anglers. Unlike fertilization, with artificial feeding all of the nutrients go directly into fish production rather than the complex food chain. For ponds less than five acres, feeding is a feasible way to increase fish production. Bluegills and channel catfish will readily eat pelleted feeds that are available at agricultural feed stores. Pellet feed containing at least 25 to 32 percent protein will produce the best growth. Largemouth bass prefer live natural foods and will seldom eat pelleted feed.

Training fishes to accept artificial pellets may take a few days. When bluegills are feeding on the surface in the evening, tossing a few floating pellets into the areas where they are feeding will teach them to eat pelleted food. Begin an artificial feeding program by feeding fish about two pounds of pellets per acre per day. This amount may be increased to 15 pounds per acre per day after they have become accustomed to being fed. The feeding rate should be adjusted in the summer according to how much the fish are eating. Feeding may slow or even cease during the summer if water temperatures get above 85°F.

The best guide to feeding fishes is to give them no more than they can eat in 15 to 20 minutes. Using floating pellets in a feeding ring is a good way to monitor how much food they are eating. A feeding station approximately three feet in diameter can be constructed by sealing the ends of a piece of corrugated field tile. Connect the ends after sealing to form a three-foot circle and place the tile in an area of the pond that can easily be reached to fill with food (pictured right).

A pond owner should be willing to make a long-term commitment to continue feeding before a feeding program starts. Feeding should begin in the spring when water temperatures reach 60°F and should stop in the fall when water temperatures drop to 60°F. Fish should be fed daily at approximately the same time and in the same place. Missing a few days of feeding while on vacation will not cause problems if feeding is consistent during the remainder of the summer. Overfeeding fish can cause many of the same problems as overfertilization. Food that is not eaten by fish will decompose and use up the pond’s dissolved oxygen (see fish kills). Decomposing food can also release nutrients into the water that may promote the growth of aquatic vegetation and algae.

Adding Fish Habitat Structures to the Pond
Habitat structures –“fish shelters,” or “fish attractors”– are primarily designed to concentrate fish and increase an angler’s chances of success. Depending upon the size and type of materials used, structures can provide cover, resting areas, and feeding areas. Habitat structures can act as substitutes for natural cover in ponds where these types of areas are lacking.

Habitat structures can be constructed from many different natural and man-made materials. Easily obtained materials such as discarded Christmas trees can be banded together, weighted and sunk, although trees such as oak, hickory, and cedar work best due to their resistance to decay (brush pile picture right) . Man-made materials such as PVC pipe, field tile, concrete block, and wooden pallets can also be fashioned into fish attracting devices. Habitat structures can be placed into the pond from the bank if the structures are not too large and there is relatively deep water near the shore. Larger structures can be placed from a boat to allow access to deeper water.

Winter ice cover provides an excellent opportunity to build and place structures too large to install from the shore or by boat. These structures can be built on the ice, or built on shore and dragged out onto the ice. In either case, the structure is placed on the ice and allowed to fall into the desired location when the ice melts (see brush piles on ice to the right).

Fishes & anglers alike will make the best use of habitat structures that are distributed carefully in the best locations. These structures are best placed in water that is within reasonable casting distance from shore & two to eight feet deep to allow consistent fish use. Habitat structures should not be placed in the deepest part of the pond where low dissolved oxygen levels (common during summer) make them inaccessible to fish.

The Pond Boss Talks about timing of your pond management

DAWN OF A NEW SEASON. POND MANAGEMENT IS ABOUT TIMING – BY BOB LUSK
Thursday, January 27, 2011 at 5:27pm
Water temps, not dates, the real key

Remember Forrest Gump? He was running along a lonely stretch of highway, minding his own business, when he steps in a pile of nature’s fertilizer. Forrest looks down, then back at the front guy in the crowd behind him, and says, “It happens.”

In the world of pond management, “it” sure does. Let’s examine “it.”

Beginning late each winter, extending into spring, then deep into summer, I get the same questions, from different people, sometimes in different states, but roughly the same questions about their fishing ponds.

Example: “I fertilized my lake, and nothing happened. The water is just as clear as ever.”

Or, maybe this one: “I followed label directions, fertilized the right amount for my pond, and bottom weeds have taken over.”

No pretty green water, no plankton bloom in their fishing ponds.

What happened? “It” didn’t work.

What gives? Is “it” the fertilizer? Or, maybe the water? Was “it” applied correctly? Was the compound properly distributed throughout the pond, then allowed to fully dissolve into the water column, the way Pond Boss says to do “it”?

There’s an old adage for real estate people that relates to the three basic principles of the property — location, location, location. In pond management, “it” is “timing, timing, timing.”

You can add fertilizer to your water, applying at the proper rates, the proper N-P-K (nitrogen-phosphorus-potassium) mix, until you are blue in the face, and never get a bloom. This is especially 1 if you were to fertilize during the coldest spell of the winter. Timing. The right pond management technique, perhaps, but it was used at the wrong moment.

As you plan for the New Year for your favorite fishing pond, the new growing season, start putting together your basic pond management strategy for the next 12 months. In Texas, the Agriculture Extension Service provides excellent information in the form of a calendar. Trouble is, on any given spring day, the temperature at the southern tip of the Lone Star state may hit 85 degrees, while the folks in Amarillo, located in the middle of the Texas Panhandle, may be shoveling snow off the sidewalk. So much for a pond management schedule dictated by pages on a calendar.

Instead, let water temperature be your guide. Check the Pond Boss display ads for catalog distributors and buy a good thermometer. Then use it to check water temperatures on a regular basis.

Don’t get too concerned about the mechanics of this, whether you take the temperature six inches below the surface or 3 feet deep, just make sure to place the thermometer in approximately the same place each time in your fishing pond.

If you can’t be at your pond all the time, check temps as often as possible. Write your findings in a notebook. Watch your pond temperature patterns, and keep notes. Two or three years of sound temperature record keeping will put you in the pond management driver’s seat.

Here’s how: Let’s say, for instance, that at 45 degrees, you start noticing the onset of filamentous algae growth in your fishing pond. Write that in your notebook. At 55-60, fish began coming to your feeder. Make a note. At 62-68, bass went on their spawning nests. Two weeks later, baby bass are seen in schools, around the edge of your fishing pond. Write it down. All of it.

Those little facts will help you achieve pond management goals next year, and the year after, beginning with the first hint of filamentous algae, which tends to get worse as water temperatures rise. With all biological activity that occurs in your fishing pond, there is a direct relation to water temperature.

Take plankton for an example. Desirable plankton blooms, adequately fed, will not thrive until water temps in your fishing pond are consistently above 60 degrees. That’s not to say you can’t find plankton in winter. You can.

But, to properly feed baby fish in your pond, 60 degrees is “it.” Sixty is the trigger point.

What about feeding pelleted fish food like Purina Aqua Max, you might ask? Different fish respond to different temperatures. When your temps hit 50-55 last Fall, channel cat eased away from the fish feeder, into the murky depths of your fishing pond to hunker down in a big school. But, your feisty bluegill probably came to the fish feeder even as temps dropped into the lower 40’s.

I often get asked about stocking fingerlings in a new fishing pond. When should you introduce fingerlings to a new environment?

With our pond management clients, we urge fishing pond owners to avoid extremes. Both hot and cold can be stressful for handling fish. Oh yes, fish can certainly survive their extremes, once they arrive in the fishing pond. But getting them from the hatchery to your pond can be tricky during really hot or really cold. Transport fish during warm or cool times.

Here’s a simple temperature “calendar” to bring pond management techniques to a sharper focus:

Temps below 32 degrees

Ice. Aerate northern ponds, if possible, and keep snow cover off clear ice. This is a great opportunity to prepare brush piles, rocks, pipe, or other materials on top of ice, where they can sink, after thaw, for your fish cover.

32-42 degrees

Do not expect fish to feed. Warmwater fish are too sluggish, trout feeding is minimal.

42-48 degrees

Macrophytic aquatic plants are dead. Good time to install cover into barren areas. Be sure to put cover in mid-depth areas of your fishing pond, relatively near shore.

48-55 degrees

Bluegill will feed, especially if conditioned to fish food pellets. Filamentous algae begins to grow around fishing pond edges, especially during warm afternoons. Peak trout feeding temperatures.

55-58 degrees

Channel catfish come to life, and begin searching for food. Bluegill activity escalates, Bass begin moving from structure. Filamentous algae thickening. Trout active.

58-62 degrees

Fertilize fishing ponds with clear water! Do not dally. Bass begin showing signs of nesting, preparing crater-shaped spots, 4-6 feet deep, 18 inches in diameter, for spawning. Filamentous algae in full growth stage. Begin checking for plankton bloom 5 or 6 days after fertilizing, as temps continue their Spring rise. Time to begin stocking fingerling fish into new ponds, or adult fish for corrective stocking situations. Trout still active and growing. Crappie on nests.

62-68 degrees

Worldwide, this is prime spawning temperature range for largemouth bass in your fishing pond. Plankton blooms beginning to color the pond water. Measure pond water visibility, shooting for 18-24″. This is still a good time to fertilize your pond. Redear sunfish and bluegill begin preparing and sitting on nests. Trout active and growing. Cattails begin to grow, along with peripheral reeds. Watch for beginnings of rooted aquatic plants underwater in your pond.

68-72 degrees

The bass spawn wanes, with schools of baby bass beginning to appear. Bluegill are on nests. Plankton reach optimum growth. Measure visibility in the fishing pond. Rooted plants growing, cattails and reeds tall. All fish feeding well.

72-76 degrees

Keep measuring pond water visibility; maintain plankton blooms. Watch for plankton bloom beginning to darken from bright green to an olive green. Cattails and reeds reaching maturity. American lotus and select lily pads begin to show themselves. Peak operating temperatures for all warm water fish. Heavy feeding, both natural food and from your feeders. Young of the year bass, bluegill and redear can be observed. Channel catfish beginning their spawning rituals. Monitor plankton bloom, keep goals in sight. Trout tend to become sluggish.

76-80. degrees

Trout are dead. Warmwater fish on full feeding throttles, fish growth rates max. Rooted aquatic plants maturing, still rapidly growing. Filamentous algae beginning to disappear. Plankton, when fed properly, is thriving. Watch for plankton bloom color to shift from olive green to a greenish brown. Be careful when boosting your pond algae bloom with fertilizer. Use maintenance doses, only. Keep checking visibility; use maintenance doses of fertilizer as pond water visibility increases beyond 24-30 inches. Floating plants such as duckweed, azolla, become noticeable. Good time to begin treating unwanted vegetation. Be sure to have stocked fingerlings by now.

80-84 degrees

Warm water fish are active, and plankton tends to grow quite rapidly. Do not over-fertilize an overactive plankton bloom in your pond. Measure pond water visibility, watch as plankton bloom color changes. When plankton shifts to a brownish/ green color, it has shifted from mostly phytoplankton (plant plankton) to zooplankton (animal plankton). Zooplankton blooms rapidly deplete their food source, phytoplankton, and then the bloom will “crash”. Zooplankton run out of food, zooplankton die, and sink in your fishing pond. Pond water rapidly clears. Either feed the algae bloom, or let it crash, you choose, based on your pond management goals. By now, baby fish hatched in your fishing pond are reaching fingerling sizes, and clear pond water makes forage fish available to bigger predator fish. But, remember, clear water lets sun penetrate deeper in the pond water column, expanding rooted plant territory.

84-88 degrees

Be wary of fertilizing your fishing pond. Better to under-fertilize a lot than over-fertilize a little. Biological activity, especially microbes, in water, reaches most rapid life cycle movement in warmer water. Fish metabolism beginning to slow, growth rates reaching summer doldrums. Vegetation reaching maximum growth rates and penetration in your pond.

88-92 degrees

Even warmwater species begin to hunker down in their “survival” mode. Limited feeding times, fish get sluggish. Vegetation at maximum coverage. Watch pond water chemistry, especially plankton blooms more dense than 18 inches visibility.

Above 92 degrees

Check your pond’s plankton. Drink lots of fluids. Be wary of chemically treating excessive aquatic plants. Killing too much vegetation, too fast, can devastate your fishery. Oxygen depletions are most common.

Our friend Forrest would say, “Timing is as timing does.”

Humans seem to rely on a calendar, but nature doesn’t always oblige, and her “work schedule” varies greatly from region to region. Observe pond activity, and train yourself to rely on the thermometer.

Rethink your annual pond management schedule to coincide, not with readings on a watch or even a calendar, but with temperature levels. It’s nature’s way, and it should be yours.

POND BOSS Magazine is the world’s leading resource for fish, pond and fisheries management information including discussions on muddy water, raising trophy fish, fish feeding, building a pond, algae control and more. Check us out at www.pondboss.com or contact Bob Lusk, the Pond Boss himself, at 903-564-5372. His books, Basic Pond Management, Raising Trophy Bass and Perfect Pond, Want One, may be purchased by calling 800-687-6075 or ordering online at www.pondboss.com

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