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Assessing the universality of Habitat Suitability Indexes (HSI) for brown trout (Salmo trutta L.) In relation to ecohydraulic variables

Giovanni De Cesare
2024
Posters

Abstract

The Habitat Suitability Index (HSI) is a quantitative index that determines the capacity of a given area to meet habitat requirements for a specific species with respect to given variables. The degree of universality of this index is not well understood yet. The purpose of this work is to present the results of a literature data re-analysis of HSI for brown trout and demonstrate the existence of a universal level of similarity in the ranges of hydraulic variables for the considered species.

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Giovanni De Cesare
2024
Posters

Abstract

Official source

Related concepts (30)

Brown trout

The brown trout (Salmo trutta) is a European species of salmonid fish that has been widely introduced into suitable environments globally. It includes purely freshwater populations, referred to as the riverine ecotype, Salmo trutta morpha fario, a lacustrine ecotype, S. trutta morpha lacustris, also called the lake trout, and anadromous forms known as the sea trout, S. trutta morpha trutta. The latter migrates to the oceans for much of its life and returns to fresh water only to spawn.

Sea trout

Sea trout is the common name usually applied to anadromous (sea-run) forms of brown trout (Salmo trutta), and is often referred to as Salmo trutta morpha trutta. Other names for anadromous brown trout are bull trout, sewin (Wales), peel or peal (southwest England), mort (northwest England), finnock (Scotland), white trout (Ireland), Dollaghan (Northern Ireland and salmon trout (culinary).

Species

In biology, a species (: species) is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour, or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined.

Related publications (10)

Assessing the universality of Habitat Suitability Indexes (HSI) for brown trout (Salmo trutta L.) In relation to ecohydraulic variables

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