当前位置： SCI文献检索 > MATHEMATICAL BIOSCIENCES期刊下所有文献 > Assessing three fish species ecological status in Colorado River, Grand Canyon based on physical habitat and population models.

Assessing three fish species ecological status in Colorado River, Grand Canyon based on physical habitat and population models.

Abstract：

:Colorado River is a unique ecosystem and provides important ecological services such as habitat for fish species as well as water power energy supplies. River management for this ecosystem requires assessment and decision support tools for fish which involves protecting, restoring as well as forecasting of future conditions. In this paper, a habitat and population model was developed and used to determine the levels of fish habitat suitability and population density in Colorado River between Lees Ferry and Lake Mead. The short term target fish populations are also predicted based on native fish recovery strategy. This model has been developed by combining hydrodynamics, heat transfer and sediment transport models with a habitat suitability index model and then coupling with habitat model into life stage population model. The fish were divided into four life stages according to the fish length. Three most abundant and typical native and non-native fish were selected as target species, which are rainbow trout (Oncorhynchus mykiss), brown trout (Salmo trutta) and flannelmouth sucker (Catostomus latipinnis). Flow velocity, water depth, water temperature and substrates were used as the suitability indicators in habitat model and overall suitability index (OSI) as well as weight usable area (WUA) was used as an indicator in population model. A comparison was made between simulated fish population alteration and surveyed fish number fluctuation during 2000 to 2009. The application of this habitat and population model indicates that this model can be accurate present habitat situation and targets fish population dynamics of in the study areas. The analysis also indicates the flannelmouth sucker population will steadily increase while the rainbow trout will decrease based on the native fish recovery scheme.

journal_name

Math Biosci

journal_title

Mathematical biosciences

authors

Yao W,Chen Y

doi

10.1016/j.mbs.2018.02.006

subject

Has Abstract

pub_date

2018-04-01 00:00:00

pages

91-104

eissn

0025-5564

issn

1879-3134

pii

S0025-5564(17)30224-9

journal_volume

298

pub_type

杂志文章

在线工具

Assessing three fish species ecological status in Colorado River, Grand Canyon based on physical habitat and population models.