{"id":136,"date":"2021-02-23T20:10:18","date_gmt":"2021-02-23T20:10:18","guid":{"rendered":"https:\/\/www.fisheriesmanagement.org.uk\/?page_id=136"},"modified":"2024-12-24T10:21:41","modified_gmt":"2024-12-24T10:21:41","slug":"environmental-factors","status":"publish","type":"page","link":"https:\/\/www.fisheriesmanagement.org.uk\/index.php\/environmental-factors\/","title":{"rendered":"PHYSICAL FACTORS"},"content":{"rendered":"

PHYSICAL FACTORS<\/strong><\/p>\n

Normally physical factors will be dictated by environmental factors but limited changes to a fishery may be allowed by the \u00a0appropriate Local Authority if approval is given by the Environmental Agency.<\/p>\n

ENVIRONMENTAL ASSESSMENT<\/strong><\/p>\n

FLOW RATES AND OXYGEN<\/strong><\/p>\n

The flow rate\u00a0 and oxygen levels\u00a0 are major factors on any fishery; although there may not be strong running water,\u00a0 the effects of the\u00a0 wind movement on the water together with the oxygen levels will effect\u00a0 which\u00a0 species,\u00a0 and\u00a0 the level of each species that will exist and thrive. The classical zones (I.e. highest zone being the trout zone, next the graying zone, moving down then to the barbel zone and finally the slow moving bream zone) are\u00a0 important not only for the speed of the zone but usually\u00a0 more\u00a0 importantly for\u00a0 the levels of oxygen needed by the different species. Trout \u00a0and grayling \u00a0need particularly high levels of oxygen. If they are stocked into waters with too low a level of oxygen they will not survive in the longer term. Before the close season was abolished on the still waters, a number of Associations stocked their waters with trout to provide all year round fishing. \u00a0Most initiatives failed as the levels of oxygen and suspended solids at certain periods\u00a0 throughout the year were unsuitable for t he species. . A similar problem can arise with barbel if the water does not have aeration, when it is needed. \u00a0A good oxygen meter is essential for effective management of the fishery, \u00a0providing supplementary oxygen when necessary.<\/p>\n

A number of waters have introduced aeration (solar or electrical) supported by timer systems \u00a0to increase oxygen levels but it can increase suspended solid levels, which need regular monitoring.<\/p>\n

\"\"<\/a>
good barbel\u00a0 and chub from the faster moving waters with high oxygen levels and waters with natural levels of\u00a0 suspended solids<\/figcaption><\/figure>\n
\"CHUB<\/a>
OLYMPUS DIGITAL CAMERA<\/figcaption><\/figure>\n

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Chub can\u00a0 also thrive in smaller moving waters, providing there is adequate oxygen levels;\u00a0 the waters do not have to be wide or particularly fast flowing, perhaps brooks flowing around the main \u00a0fishery water, can support chub, barbel, perch and roach. Consider any brook or stream running around your fishery for the potential to provide for angling with a little difference on moving water. \u00a0However, smaller brooks are susceptible to pollution,\u00a0 so ensure that you are aware of all inflows and outflows so that \u00a0action can be taken immediately in any cases of pollution. However, it will always be difficult to replicate a fishery that can produce the natural specimens of their natural environment,<\/p>\n

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SIZE, SIZE AND DEPTH OF WATER<\/strong><\/p>\n

The size of the water is in many cases a major limiting factor in the growth of some species, particularly the larger species; bream in particular appear to prefer larger expanses of deeper water. Our Association \u00a0has two or three waters containing bream. The smallest water has only 2 acres of open waters with a depth of only 3 or 4 feet, where bream normally grow to a weight of 4 or 5lbs. Whilst the largest water is over 200 acres with a depth of up to 15 feet: it produces double figure fish, regularly . Ideally the water should have a range of depths, the deeper water for the larger fish to escape predatory \u00a0birds, warmth in winter, etc., but also shallow water for spawning and the development of fry to grow into larger specimens, or become prey for perch or pike \u00a0to provide good specimens as part of the food chain.<\/p>\n

WATER<\/strong> FEATURES<\/strong><\/p>\n

Reeds \u00a0and tree roots, although sometimes \u00a0an inconvenience to anglers.\u00a0 can be of value to certain \u00a0fish species; perch to aid their predation on fry and smaller fish;\u00a0 tench and carp \u00a0to search for invertebrates and worms. Plants and floating aquatic weed also attract all species during the spawning periods, particularly tench and carp.\u00a0 <\/strong>\u00a0.Aquatic plant life also plays a major role in the aquatic environment by producing oxygen. particularly\u00a0 during hours of sunlight, they\u00a0 can also help improve the quality of the water by absorbing nutrients,\u00a0 Trees and reeds also influence the water temperature, particularly around the margins by making more stable\u00a0 the shorelines. Aquatic plants do, however, need some degree of management (e,g, weedkiller, water colouring, etc. to contol plant growth,.)<\/p>\n

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\"Peace<\/a>
Swans and signets on Bickershaw pool<\/figcaption><\/figure>\n

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\"\"\u00a0<\/a><\/p>\n

IN THE SUMMER MONTHS TENCH LOVE THE AQUATIC AREAS FOR\u00a0 SPAWNING<\/p>\n

\"\"<\/a><\/p>\n

TENCH\u00a0 7 AND 8 LBS + CAUGHT IN SPAWNING,\u00a0 WEEDY AREAS<\/p>\n

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WEED GROWTH<\/strong><\/p>\n

Weed growth can become a problem in any fishery.\u00a0 For low level growth manual removal may be the best way to remove such growth. However, for extensive weed growth then either water colouring to block the sunlight reaching the weed or weedkiller is a possibility.\u00a0 Do not use these options, however, without expertise as the results can be devastating.<\/p>\n

INFLOWS AND OUTFLOWS<\/strong><\/p>\n

Any aquatic environment is influenced by the land and water surrounding it. \u00a0Inflows and outflows should be regularly checked and maintained. This \u00a0involves enthusiastic members who are prepared to give up their time, arranging working parties to complete the necessary maintenance. Funds should be made available for equipment and materials as and when it is needed.<\/p>\n

PREVAILING WIND DIRECTION<\/strong><\/p>\n

Obviously wind direction will vary from day to day but the prevailing \u00a0wind direction will determine which shores need ongoing support and which can be left to the elements.\u00a0 Always consider which shores are in most need of support.<\/p>\n

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I<\/p>\n

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PHYSICAL FACTORS Normally physical factors will be dictated by environmental factors but limited changes to a fishery may be allowed by the \u00a0appropriate Local Authority if approval is given by the Environmental Agency. ENVIRONMENTAL ASSESSMENT FLOW RATES AND OXYGEN The flow rate\u00a0 and oxygen levels\u00a0 are major factors on any fishery; although there may not… Continue reading PHYSICAL FACTORS<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-136","page","type-page","status-publish","hentry","entry"],"_links":{"self":[{"href":"https:\/\/www.fisheriesmanagement.org.uk\/index.php\/wp-json\/wp\/v2\/pages\/136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fisheriesmanagement.org.uk\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.fisheriesmanagement.org.uk\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.fisheriesmanagement.org.uk\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fisheriesmanagement.org.uk\/index.php\/wp-json\/wp\/v2\/comments?post=136"}],"version-history":[{"count":32,"href":"https:\/\/www.fisheriesmanagement.org.uk\/index.php\/wp-json\/wp\/v2\/pages\/136\/revisions"}],"predecessor-version":[{"id":658,"href":"https:\/\/www.fisheriesmanagement.org.uk\/index.php\/wp-json\/wp\/v2\/pages\/136\/revisions\/658"}],"wp:attachment":[{"href":"https:\/\/www.fisheriesmanagement.org.uk\/index.php\/wp-json\/wp\/v2\/media?parent=136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}