The Spawning Grounds of the Wye
Author | : James Arthur Hutton |
Publisher | : |
Total Pages | : 26 |
Release | : 1932 |
Genre | : |
ISBN | : |
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Author | : James Arthur Hutton |
Publisher | : |
Total Pages | : 26 |
Release | : 1932 |
Genre | : |
ISBN | : |
Author | : James Arthur Hutton |
Publisher | : |
Total Pages | : 25 |
Release | : 1932 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 980 |
Release | : 1909 |
Genre | : Art |
ISBN | : |
Author | : Great Britain. Parliament. House of Commons |
Publisher | : |
Total Pages | : 1000 |
Release | : 1902 |
Genre | : Great Britain |
ISBN | : |
Author | : Great Britain. Parliament. House of Commons |
Publisher | : |
Total Pages | : 1006 |
Release | : 1902 |
Genre | : Great Britain |
ISBN | : |
Author | : Great Britain. Parliament. House of Commons |
Publisher | : |
Total Pages | : 868 |
Release | : 1867 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 560 |
Release | : 1913 |
Genre | : |
ISBN | : |
Author | : Clive Hurford |
Publisher | : Springer Science & Business Media |
Total Pages | : 412 |
Release | : 2009-12-09 |
Genre | : Science |
ISBN | : 1402092784 |
As in the terrestrial environment, most data collection from freshwater habitats to date falls into the survey, surveillance or research categories. The critical difference between these exercises and a monitoring project is that a monitoring project will clearly identify when we need to make a management response. A Model for Conservation Management and Monitoring Monitoring (as defined by Hellawell) is essentially a tool of practical conservation management, and Fig. 1.1 shows a simple, but effective, model for nature conser- tion management and monitoring. The need for clear decision-making is implicit in this model. First we must decide what would represent a favourable state for the key habitat or species, and then we must decide when to intervene if the state is (or becomes) unfavourable. A third, often overlooked, but equally important, decision concerns when we would consider the habitat or species to have recovered; this is unlikely to be the same point that we became concerned about it. This decision not only has resource imp- cations, it can also have major implications for other habitats and species (prey species are an obvious example). All of these decisions are essential to the devel- ment of an efficient and effective monitoring project.