نتایج جستجو برای: fish scale

تعداد نتایج: 676245  

2006
Tracy Van Holt Diane M. Murphy Lauren Chapman

We used local and landscape models to predict fish assemblages in the Great Swamp, NY, a region undergoing rapid development. Fish were surveyed across 17 sites. Fish-species richness, diversity, percent intolerant species, and IBI metrics for fish species richness, benthic insectivores, terete minnows, and dominant species were calculated. Local stream features were characterized and surroundi...

2009
SIEGFRIED EHRICH VANESSA STELZENMÜLLER SARA ADLERSTEIN

Understanding the links between large scale spatial structuring of fish assemblages and shaping factors is essential to develop comprehensive ecosystem-based fisheries management. In this study, we investigated spatial patterns of bottom fish assemblages in the North Sea in relation to prevailing water masses in the region. We based our analysis on catch data from the German Small-Scale Bottom ...

ژورنال: آبزیان زینتی 2022
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The rapid development of fish farming and the increasing demand for fish have led to the dense cultivation of fish, which in turn has caused stressors for fish and thus increased the risk of disease. until now, the use of chemicals has been widely used for prevention and treatment, however, the use of chemical drugs has several negative effects on the environment (creation of resistant strains ...

Journal: :SDRP Journal of Earth Sciences & Environmental Studies 2018

2012
Andrew F Johnson Stuart R Jenkins Jan G Hiddink Hilmar Hinz

Introduction 2 Methods 4 Search criteria 4 Statistical analyses and graphical outputs 4 Results 5 Discussion 10 Data limitations and considerations 10 Spatial scale 11 Abstract Adoption of the ecosystem approach to fisheries management relies on recognition of the link between fish and other components of the ecosystem, namely their physical and biological habitat. However, identifying the habi...

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