Download Northern Pike : Ecology, Conservation, and Management by Rodney B. Pierce PDF

By Rodney B. Pierce

The northern pike—sometimes affectionately often called the “aquatic wolf”—is probably the most wanted and mythologized fishes in Minnesota, yet in the past there were few books dedicated to the historical past and ecological administration of the species. in keeping with pioneering learn performed in Minnesota by means of prime pike expert Rodney B. Pierce, Northern Pike Ecology, Conservation, and administration historical past is the main whole choice of details so far at the species, for everybody from scientists and conservation biologists to
general readers and leisure anglers.
A significantly vital online game fish and source either in Minnesota and during the northern hemisphere, northern pike populations at once replicate neighborhood geology and human impact, enjoying a key position within the future health of freshwater ecosystems. As urbanization spreads and the human inhabitants maintains to develop, pike populations face expanding strain, requiring new methods of taking a look at and dealing with the species. In Minnesota, groundbreaking paintings has been performed on northern pike: analyses of stocking luck and investigations into the relationships inside of fish groups, the administration of rearing marshes, environmental results on normal construction, the genetics of northern pike, and methods for scientifically tracking pike. The kingdom has been a pacesetter in constructing fishing laws to assist fix huge pike, between many different measures designed to make sure the long run volume and wellbeing and fitness of a key species in Minnesota’s waterways.
Weaving major historic clinical literature and technical information with his personal examine, Pierce’s benchmark learn files and synthesizes the lengthy historical past of northern pike administration and describes the most recent efforts being taken to higher comprehend and deal with this severe and popular species.

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Extra resources for Northern Pike : Ecology, Conservation, and Management History

Sample text

Identification of the first annulus is often difficult due to changing growth patterns during the first year of life that have been attributed to a shift in diet from invertebrates to fish. The 1955 dissertation by John Williams from the University the ecology of northern pike of his remarkable work was originally published in Swedish in 1759 of Michigan provided an intensive study of scale samples from known-age and partly known-age fish. 29 are from a series of photos he sent to the Minnesota Conservation Depart42 ment.

Minnesota populations consist primarily of fish less than 6 years old, and fish older than 12 do not seem to be common.  Sex of the fish also influences growth. 7 inches) long have been trap netted by mndnr crews in the spring. Seasonally, growth of individual pike is most rapid when temperatures are increasing during spring and early summer, then decreases through late summer and fall, and is relatively low through winter (Casselman 1996). 1 shows minimum, median, maximum, and interquartile ranges of total lengths at the beginning of each year of life.

Greatest egg densities in six northern Nebraska lakes were found on flooded native prairie grasses, mowed hay, and even on broken hay bales (McCarraher and Thomas 1972). 5 feet) in Point Marguerite Marsh, New York (Farrell et al. 4 feet) in Rose Bay of the upper St. Lawrence River, New York (Farrell 2001). 8 meters (16 to 19 feet) of water covered with muskgrass Chara and stonewort Nitella (Pierce et al. 2005). In complex habitats of the upper St. 1 6 . Spawning area of northern pike in Willow Lake, Itasca County.

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