Evaluations of seasonal habitat variations of freshwater fishes, fireflies, and frogs using a habitat suitability index model that includes river water temperature

Kei Nukazawa, Jun ichi Shiraiwa, So Kazama

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The habitats of aquatic organisms, including freshwater fishes (Oncorhynchus masou masou, Plecoglossus altivelis altivel, and Cyprinus carpio), fireflies (Luciola cruciata and Luciola lateralis), and frogs (Anura sp.), were evaluated dynamically in the Natori River basin in the central Miyagi prefecture in Japan using water temperature as an environmental index. The HSI (habitat suitability index) and WUA (weighted useable area) of aquatic organisms were quantitatively calculated using a distributed runoff model coupled with a heat budget model, land cover data, and digital cartographic data. The results showed that the HSI values of O. masou masou and P. altivelis altivel tended to be high in locations where they were actually observed. The HSI distribution patterns of L. cruciata and L. lateralis showed different results, even though the two species are in the same genus and have similar life cycles. The HSI distribution of Anura sp. returned an average value for the whole basin except for urban and upstream basin areas. In fact, Anura sp. frogs were observed throughout the study basin. Incorporating the dynamic factor of water temperature in the model allowed for monthly evaluations, especially for annual migratory organisms, such as P. altivelis altivel. WUA fluctuations, considering river water temperature, can characterize the annual behavior of P. altivelis altivel and Anura sp., and the partial behavior of O. masou masou.

Original languageEnglish
Pages (from-to)3718-3726
Number of pages9
JournalEcological Modelling
Volume222
Issue number20-22
DOIs
Publication statusPublished - 2011 Oct

Keywords

  • Distributed runoff model
  • HSI
  • Heat budget model
  • Seasonal change
  • WUA

ASJC Scopus subject areas

  • Ecological Modelling

Fingerprint Dive into the research topics of 'Evaluations of seasonal habitat variations of freshwater fishes, fireflies, and frogs using a habitat suitability index model that includes river water temperature'. Together they form a unique fingerprint.

  • Cite this